From 45f0a60bfe1ccb48d413f7567be26018fd54fff1 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 14:06:15 +0900
Subject: [PATCH 01/91] docs(readme): Create function list

---
 README.md | 494 +++---------------------------------------------------
 1 file changed, 27 insertions(+), 467 deletions(-)

diff --git a/README.md b/README.md
index 00410ae50..05859e34c 100644
--- a/README.md
+++ b/README.md
@@ -1,469 +1,29 @@
-# 지하철 노선도 미션
+# 지하철 노선도 미션 - 김유기
 - 지하철 역과 노선을 관리하는 지하철 노선도 기능을 구현한다.
 
-<br>
-
-## 🚀 기능 요구사항
-
-### 초기 설정 
-- 프로그램 시작 시 역, 노선 등 필요한 정보를 미리 셋팅할 수 있다.
-
-> 아래의 사전 등록 정보로 반드시 초기 설정을 하기
->
-```
- 1. 지하철역으로 교대역, 강남역, 역삼역, 남부터미널역, 양재역, 양재시민의숲역, 매봉역이 등록되어 있다.
- 2. 지하철 노선으로 2호선, 3호선, 신분당선이 등록되어 있다.
- 3. 노선에 역이 아래와 같이 등록되어 있다.(왼쪽 끝이 상행 종점)
-   - 2호선: 교대역 - 강남역 - 역삼역
-   - 3호선: 교대역 - 남부터미널역 - 양재역 - 매봉역
-   - 신분당선: 강남역 - 양재역 - 양재시민의숲역
- ```
-
-<img src="image/domain.png" width="500">
-  
-### 지하철 역 관련 기능
-- 지하철 역을 등록하고 삭제할 수 있다. (단, 노선에 등록된 역은 삭제할 수 없다)
-- 중복된 지하철 역 이름이 등록될 수 없다.
-- 역 이름은 2자 이상, 5자 이하만 가능하다.
-- 지하철 역의 목록을 조회할 수 있다.
-
-### 지하철 노선 관련 기능
-- 지하철 노선을 등록하고 삭제할 수 있다.
-- 중복된 지하철 노선 이름이 등록될 수 없다.
-- 노선 이름은 2자 이상, 5자 이하만 가능하다.
-- 노선 등록 시 상행 종점역과 하행 종점역을 입력받는다. 
-- 지하철 노선의 목록을 조회할 수 있다.
-
-### 지하철 구간 추가 기능
-- 지하철 노선에 구간을 추가하는 기능은 노선에 역을 추가하는 기능이라고도 할 수 있다.
-  - 역과 역사이를 구간이라 하고 이 구간들의 모음이 노선이다.  
-- 하나의 역은 여러개의 노선에 추가될 수 있다.
-- 역과 역 사이에 새로운 역이 추가 될 수 있다.
-- 노선에서 갈래길은 생길 수 없다.
-
-<img src="image/section1.png" width="500">
-
-### 지하철 구간 삭제 기능
-- 노선에 등록된 역을 제거할 수 있다.
-- 종점을 제거할 경우 다음 역이 종점이 된다.
-- 노선에 포함된 역이 두개 이하일 때는 역을 제거할 수 없다.
-
-<img src="image/section2.png" width="500">
-
-### 지하철 노선에 등록된 역 조회 기능
-- 노선의 상행 종점부터 하행 종점까지 연결된 순서대로 역 목록을 조회할 수 있다.
-
-<br>
-
-## ✍🏻 입출력 요구사항
-- `프로그래밍 실행 결과 예시`를 참고하여 입출력을 구현한다.
-- 기대하는 출력 결과는 `[INFO]`를 붙여서 출력한다. 출력값의 형식은 예시와 동일하게 한다.
-- 에러 발생 시 `[ERROR]`를 붙여서 출력한다. (에러의 문구는 자유롭게 작성한다.)
-
-### 💻 프로그래밍 실행 결과 
-#### 역 관리
-```
-## 메인 화면
-1. 역 관리
-2. 노선 관리
-3. 구간 관리
-4. 지하철 노선도 출력
-Q. 종료
-
-## 원하는 기능을 선택하세요.
-1
-
-## 역 관리 화면
-1. 역 등록
-2. 역 삭제
-3. 역 조회
-B. 돌아가기
-
-## 원하는 기능을 선택하세요.
-1
-
-## 등록할 역 이름을 입력하세요.
-잠실역
-
-[INFO] 지하철 역이 등록되었습니다.
-
-## 메인 화면
-1. 역 관리
-2. 노선 관리
-3. 구간 관리
-4. 지하철 노선도 출력
-Q. 종료
-
-## 원하는 기능을 선택하세요.
-1
-
-## 역 관리 화면
-1. 역 등록
-2. 역 삭제
-3. 역 조회
-B. 돌아가기
-
-## 원하는 기능을 선택하세요.
-3
-
-## 역 목록
-[INFO] 교대역 
-[INFO] 강남역
-[INFO] 역삼역
-[INFO] 남부터미널역
-[INFO] 양재역
-[INFO] 양재시민의숲역
-[INFO] 매봉역
-[INFO] 잠실역
-
-## 메인 화면
-1. 역 관리
-2. 노선 관리
-3. 구간 관리
-4. 지하철 노선도 출력
-Q. 종료
-
-## 원하는 기능을 선택하세요.
-1
-
-## 역 관리 화면
-1. 역 등록
-2. 역 삭제
-3. 역 조회
-B. 돌아가기
-
-## 원하는 기능을 선택하세요.
-2
-
-## 삭제할 역 이름을 입력하세요.
-잠실역
-
-[INFO] 지하철 역이 삭제되었습니다.
-
-...
-```
-
-### 노선 관리
-
-```
-
-...
-
-## 메인 화면
-1. 역 관리
-2. 노선 관리
-3. 구간 관리
-4. 지하철 노선도 출력
-Q. 종료
-
-## 원하는 기능을 선택하세요.
-2
-
-## 노선 관리 화면
-1. 노선 등록
-2. 노선 삭제
-3. 노선 조회
-B. 돌아가기
-
-## 원하는 기능을 선택하세요.
-1
-
-## 등록할 노선 이름을 입력하세요.
-1호선
-
-## 등록할 노선의 상행 종점역 이름을 입력하세요.
-강남역
-
-## 등록할 노선의 하행 종점역 이름을 입력하세요.
-잠실역
-
-[INFO] 지하철 노선이 등록되었습니다.
-
-## 메인 화면
-1. 역 관리
-2. 노선 관리
-3. 구간 관리
-4. 지하철 노선도 출력
-Q. 종료
-
-## 원하는 기능을 선택하세요.
-2
-
-## 노선 관리 화면
-1. 노선 등록
-2. 노선 삭제
-3. 노선 조회
-B. 돌아가기
-
-## 원하는 기능을 선택하세요.
-3
-
-[INFO] 노선 목록
-[INFO] 2호선
-[INFO] 3호선
-[INFO] 신분당선
-[INFO] 1호선
-
-## 메인 화면
-1. 역 관리
-2. 노선 관리
-3. 구간 관리
-4. 지하철 노선도 출력
-Q. 종료
-
-## 원하는 기능을 선택하세요.
-2
-
-## 노선 관리 화면
-1. 노선 등록
-2. 노선 삭제
-3. 노선 조회
-B. 돌아가기
-
-## 원하는 기능을 선택하세요.
-2
-
-## 삭제할 노선 이름을 입력하세요.
-1호선
-
-[INFO] 지하철 노선이 삭제되었습니다.
-
-...
-
-```
-
-### 구간 관리
-
-```
-...
-
-## 메인 화면
-1. 역 관리
-2. 노선 관리
-3. 구간 관리
-4. 지하철 노선도 출력
-Q. 종료
-
-## 원하는 기능을 선택하세요.
-3
-
-## 구간 관리 화면
-1. 구간 등록
-2. 구간 삭제
-B. 돌아가기
-
-## 원하는 기능을 선택하세요.
-1
-
-## 노선을 입력하세요.
-2호선
-
-## 역이름을 입력하세요.
-잠실역
-
-## 순서를 입력하세요.
-2
-
-[INFO] 구간이 등록되었습니다.
-
-## 메인 화면
-1. 역 관리
-2. 노선 관리
-3. 구간 관리
-4. 지하철 노선도 출력
-Q. 종료
-
-## 원하는 기능을 선택하세요.
-3
-
-## 구간 관리 화면
-1. 구간 등록
-2. 구간 삭제
-B. 돌아가기
-
-## 원하는 기능을 선택하세요.
-2
-
-## 삭제할 구간의 노선을 입력하세요.
-2호선
-
-## 삭제할 구간의 역을 입력하세요.
-잠실역
-
-[INFO] 구간이 삭제되었습니다.
-
-...
-
-```
-
-### 지하철 노선도 출력
-
-```
-## 메인 화면
-1. 역 관리
-2. 노선 관리
-3. 구간 관리
-4. 지하철 노선도 출력
-Q. 종료
-
-## 원하는 기능을 선택하세요.
-4
-
-## 지하철 노선도
-[INFO] 2호선
-[INFO] ---
-[INFO] 교대역
-[INFO] 강남역
-[INFO] 역삼역
-
-[INFO] 3호선
-[INFO] ---
-[INFO] 교대역
-[INFO] 남부터미널역
-[INFO] 양재역
-[INFO] 매봉역
-
-[INFO] 신분당선
-[INFO] ---
-[INFO] 강남역
-[INFO] 양재역
-[INFO] 양재시민의숲역
-
-```
-
-#### 에러 출력 예시
-
-```
-## 메인 화면
-1. 역 관리
-2. 노선 관리
-3. 구간 관리
-4. 지하철 노선도 출력
-Q. 종료
-
-## 원하는 기능을 선택하세요.
-4
-
-[ERROR] 선택할 수 없는 기능입니다.
-
-## 원하는 기능을 선택하세요.
-1
-
-## 역 관리 화면
-1. 역 등록
-2. 역 삭제
-3. 역 조회
-B. 돌아가기
-
-## 원하는 기능을 선택하세요.
-1
-
-## 등록할 역 이름을 입력하세요.
-강남역
-
-[ERROR] 이미 등록된 역 이름입니다. 
-
-## 역 관리 화면
-1. 역 등록
-2. 역 삭제
-3. 역 조회
-B. 돌아가기
-
-## 원하는 기능을 선택하세요.
-
-...
-
-```
-
-<br>
-
-## 🎱 프로그래밍 요구사항
-- 자바 코드 컨벤션을 지키면서 프로그래밍한다.
-  - 기본적으로 [Google Java Style Guide](https://google.github.io/styleguide/javaguide.html)을 원칙으로 한다.
-  - 단, 들여쓰기는 '2 spaces'가 아닌 '4 spaces'로 한다.
-- indent(인덴트, 들여쓰기) depth를 3이 넘지 않도록 구현한다. 2까지만 허용한다.
-  - 예를 들어 while문 안에 if문이 있으면 들여쓰기는 2이다.
-  - 힌트: indent(인덴트, 들여쓰기) depth를 줄이는 좋은 방법은 함수(또는 메소드)를 분리하면 된다.
-- 3항 연산자를 쓰지 않는다.
-- 함수(또는 메소드)의 길이가 15라인을 넘어가지 않도록 구현한다.
-  - 함수(또는 메소드)가 한 가지 일만 잘 하도록 구현한다.
-- else 예약어를 쓰지 않는다.
-  - 힌트: if 조건절에서 값을 return하는 방식으로 구현하면 else를 사용하지 않아도 된다.
-  - else를 쓰지 말라고 하니 switch/case로 구현하는 경우가 있는데 switch/case도 허용하지 않는다.
-- 프로그래밍 요구사항에서 별도로 변경 불가 안내가 없는 경우 파일 수정과 패키지 이동을 자유롭게 할 수 있다.
-- 예외 상황 시 에러 문구를 출력해야 한다. 단, 에러 문구는 `[ERROR]` 로 시작해야 한다.
-
-### 프로그래밍 요구사항 - Application
-- Application 클래스를 활용해 구현해야 한다.
-- Application의 패키지 구조는 변경하지 않는다.
-- 주석을 참고하여 구현할 수 있으며 주석대로 구현하지 않아도 되고 삭제해도 무관하다. 
-```java
-public class Application {
-    public static void main(String[] args) {
-        ...
-    }
-}
-```
-
-### 프로그래밍 요구사항 - Station, Line
-- Station, Line 클래스를 활용하여 지하철역과 노선을 구현해야 한다.
-- 제공하는 각 클래스의 기본 생성자를 추가할 수 없다.
-- 필드(인스턴스 변수)인 name의 접근 제어자 private을 변경할 수 없다.
-- 가능하면 setter 메소드(ex. setXXX)를 추가하지 않고 구현한다.
- 
-```java
-public class Station {
-    private String name;
-
-    public Station(String name) {
-        this.name = name;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    // 추가 기능 구현
-}
-
-```
-
-### 프로그래밍 요구사항 - StationRepository, LineRepository
-- Station과 Line의 상태를 저장할 수 있는 StationRepository, LineRepository를 제공한다.
-- 필요 시 StationRepository, LineRepository 이 외 추가로 Repository를 만들 수 있다.
-- 추가로 생성되는 객체에 대해서 XXXRepository 네이밍으로 저장 클래스를 추가할 수 있다.
-- 객체들의 상태를 관리하기 위해서 XXXRepository 클래스를 활용해 저장 로직을 구현해야 한다.
-- 필요에 따라 자유롭게 수정이 가능하다.
- 
-```java
-public class StationRepository {
-    private static final List<Station> stations = new ArrayList<>();
-
-    public static List<Station> stations() {
-        return Collections.unmodifiableList(stations);
-    }
-
-    public static void addStation(Station station) {
-        stations.add(station);
-    }
-
-    public static boolean deleteStation(String name) {
-        return stations.removeIf(station -> Objects.equals(station.getName(), name));
-    }
-}
-```
-
-<br>
-
-## 📈 진행 요구사항
-- 미션은 [java-subway-map-precourse 저장소](https://github.com/woowacourse/java-subway-map-precourse) 를 fork/clone해 시작한다.
-- 기능을 구현하기 전에 java-subway-map-precourse/docs/README.md 파일에 구현할 기능 목록을 정리해 추가한다.
-- git의 commit 단위는 앞 단계에서 README.md 파일에 정리한 기능 목록 단위로 추가한다.
-  - [AngularJS Commit Message Conventions](https://gist.github.com/stephenparish/9941e89d80e2bc58a153) 참고해 commit log를 남긴다.
-- [프리코스 과제 제출 문서](https://github.com/woowacourse/woowacourse-docs/tree/master/precourse) 절차를 따라 미션을 제출한다.
-  - [프리코스 과제 FAQ](https://github.com/woowacourse/woowacourse-docs/tree/master/precourse/faq) 문서를 참고하여 진행할 수 있다.
-<br>
-
-## 📝 License
-
-This project is [MIT](https://github.com/woowacourse/java-subway-map-precourse/blob/master/LICENSE.md) licensed.
+## 기능 목록
+
+* 초기 역, 노선 설정해야 한다.
+* 지하철 역은 등록이 가능하다.
+  * 지하철 역의 이름은 2글자 이상이여야 한다
+  * 지하철 역의 이름은 중복이 불가능 해야 한다.
+* 지하철 역은 삭제가 가능하다.
+  * 노선에 등록된 지하철 역은 삭제가 불가능 해야 한다.
+* 지하철 역의 목록 조회가 가능해야 한다.
+* 지하철 노선은 등록이 가능하다.
+  * 지하철 노선의 이름은 2글자 이상이여야 한다.
+  * 지하철 노선의 이름은 중복이 불가능 해야 한다.
+* 지하철 노선은 삭제가 가능하다.
+* 지하철 노선을 등록할때 상행종점역과 하행 종점역을 입력받는다.
+* 지하철 노선의 목록을 조회할 수 있다.
+* 지하철 노선에 구간을 추가 할 수 있다.
+  * 하나의 역은 여러개의 노선에 추가 될 수 있다.
+  * 역과 역사이에 새로운 역이 추가 될 수 있다.
+  * 노선에서 갈래길은 생길 수 없다. ? 이해불가
+* 지하철 노선에 구간을 삭제 할 수 있다.
+  * 종점을 제거할 경우 다음 역이 종점이 된다.
+  * 노선에 포함된 역이 두개 이하일 때는 역을 제거할 수 없다.
+* 지하철 노선에 등록된 역은 조회가 가능하다.
+  * 상행종점부터 하행 종점까지 연결된 순서대로 역 목록을 조회할 수 있다.
+* 에러 발생시 `[ERROR]` 을 붙여서 출력한다.
+* 기대하는 출력 결과는 `[INFO]`를 붙여서 출력한다.

From f0c0de62975a04cf75e1ed1accbc8c9c4fc69006 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 14:41:08 +0900
Subject: [PATCH 02/91] feat(DataInitService): create DataInitService class

create DataInitService and a constant
---
 src/main/java/subway/DataInitService.java | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 src/main/java/subway/DataInitService.java

diff --git a/src/main/java/subway/DataInitService.java b/src/main/java/subway/DataInitService.java
new file mode 100644
index 000000000..4eac832e5
--- /dev/null
+++ b/src/main/java/subway/DataInitService.java
@@ -0,0 +1,19 @@
+package subway;
+
+public class DataInitService {
+
+    private static final String GYODAE_STATION = "교대역";
+    private static final String GANGNAM_STATION = "강남역";
+    private static final String YEOKSAM_STATION = "역삼역";
+    private static final String SOUTH_TERMIANL_STATION = "남부터미널역";
+    private static final String YANGJAE_STATION = "양재역";
+    private static final String YANGJAE_CITIZEN_FOREST_STATION = "양재시민의숲역";
+    private static final String MAEBONG_STATION = "매봉역";
+    private static final String LINE_TOW = "2호선";
+    private static final String LINE_THREE = "3호선";
+    private static final String LINE_SINBUNDANG = "신분당선";
+    private static final int ONE = 1;
+    private static final int TWO = 2;
+
+    
+}

From bbd8d83d530097b1e7caf363230168921ba9eddc Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 15:06:03 +0900
Subject: [PATCH 03/91] feat(DataInitService): create Init Function

---
 src/main/java/subway/DataInitService.java | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/DataInitService.java b/src/main/java/subway/DataInitService.java
index 4eac832e5..92c081f87 100644
--- a/src/main/java/subway/DataInitService.java
+++ b/src/main/java/subway/DataInitService.java
@@ -15,5 +15,22 @@ public class DataInitService {
     private static final int ONE = 1;
     private static final int TWO = 2;
 
-    
+    public static void init() {
+        addStation();
+        addLine();
+        addSections();
+    }
+
+    private static void addStation() {
+
+    }
+
+    private static void addLine() {
+
+    }
+
+    private static void addSections() {
+
+    }
+
 }

From a16177517797c4c2743370cc6f81f9e0a106c22c Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 15:08:13 +0900
Subject: [PATCH 04/91] feat(StationService): create StationService Class

---
 src/main/java/subway/StationService.java | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 src/main/java/subway/StationService.java

diff --git a/src/main/java/subway/StationService.java b/src/main/java/subway/StationService.java
new file mode 100644
index 000000000..80d8ac5b2
--- /dev/null
+++ b/src/main/java/subway/StationService.java
@@ -0,0 +1,5 @@
+package subway;
+
+public class StationService {
+    
+}

From 2c82172cdbcb7f3d9d853d52fc03147c2758ba86 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 15:23:15 +0900
Subject: [PATCH 05/91] feat(StationService): create addStation Function

create addStation Fucntion and Length condition check
---
 src/main/java/subway/StationService.java | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/StationService.java b/src/main/java/subway/StationService.java
index 80d8ac5b2..36a21d72e 100644
--- a/src/main/java/subway/StationService.java
+++ b/src/main/java/subway/StationService.java
@@ -1,5 +1,20 @@
 package subway;
 
+import subway.domain.Station;
+import subway.domain.StationRepository;
+
 public class StationService {
-    
+
+    public static final int MIN_STATION_NAME_LENGTH = 2;
+
+    public static boolean addStation(String name) {
+
+        if (name.length() < MIN_STATION_NAME_LENGTH) {
+            // TODO - 길이에러 출력함수 호출하기
+            return false;
+        }
+        StationRepository.addStation(new Station(name));
+        // TODO - 완료출력함수 호출하기
+        return true;
+    }
 }

From ddb8d298fba1eb7547004f25b4eadf2ecc0161ed Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 15:33:31 +0900
Subject: [PATCH 06/91] feat(OutPut): Create OutPut Class

Create OutPutClass and printStationNameLengthError Function create
---
 src/main/java/subway/OutPut.java | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 src/main/java/subway/OutPut.java

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
new file mode 100644
index 000000000..645553870
--- /dev/null
+++ b/src/main/java/subway/OutPut.java
@@ -0,0 +1,13 @@
+package subway;
+
+public class OutPut {
+
+    public static final String INFO = "[INFO] ";
+    public static final String ERROR = "[ERROR] ";
+    private static final String STATION_NAME_LENGTH_ERROR = "지하철 역의 이름은 2글자 이상이여야 합니다.\n";
+
+    public static void printStationNameLengthError() {
+        System.out.println(ERROR + STATION_NAME_LENGTH_ERROR);
+    }
+
+}

From e41292dd9bccb08ffaf1519ce41dd8198c4e2dd9 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 15:35:43 +0900
Subject: [PATCH 07/91] refactor(StationService): add stationNameLengthError
 Function call

---
 src/main/java/subway/StationService.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/subway/StationService.java b/src/main/java/subway/StationService.java
index 36a21d72e..fcc0c07ff 100644
--- a/src/main/java/subway/StationService.java
+++ b/src/main/java/subway/StationService.java
@@ -10,7 +10,7 @@ public class StationService {
     public static boolean addStation(String name) {
 
         if (name.length() < MIN_STATION_NAME_LENGTH) {
-            // TODO - 길이에러 출력함수 호출하기
+            OutPut.printStationNameLengthError();
             return false;
         }
         StationRepository.addStation(new Station(name));

From d522162cf34031a88ff652beb7f71e919651b12d Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 15:37:23 +0900
Subject: [PATCH 08/91] feat(OutPut): create printStationCreateMessage Function

---
 src/main/java/subway/OutPut.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index 645553870..9bc1ae8fe 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -5,9 +5,14 @@ public class OutPut {
     public static final String INFO = "[INFO] ";
     public static final String ERROR = "[ERROR] ";
     private static final String STATION_NAME_LENGTH_ERROR = "지하철 역의 이름은 2글자 이상이여야 합니다.\n";
+    private static final String STATION_CREATE_MESSAGE = "지하철 역이 등록되었습니다.\n";
 
     public static void printStationNameLengthError() {
         System.out.println(ERROR + STATION_NAME_LENGTH_ERROR);
     }
 
+    public static void printStationCreateMessage() {
+        System.out.println(INFO + STATION_CREATE_MESSAGE);
+    }
+
 }

From ebf6d50822517d0b7a44a7d8cc5a44f5d0190654 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 15:40:30 +0900
Subject: [PATCH 09/91] refactor(StationService): add StationCreateMessage Call

---
 src/main/java/subway/StationService.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/subway/StationService.java b/src/main/java/subway/StationService.java
index fcc0c07ff..3bb5abcac 100644
--- a/src/main/java/subway/StationService.java
+++ b/src/main/java/subway/StationService.java
@@ -14,7 +14,7 @@ public static boolean addStation(String name) {
             return false;
         }
         StationRepository.addStation(new Station(name));
-        // TODO - 완료출력함수 호출하기
+        OutPut.printStationCreateMessage();
         return true;
     }
 }

From 276f1043520ff37350028c01416689675289a791 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 15:45:19 +0900
Subject: [PATCH 10/91] feat(Station): create isEqualName Function

---
 src/main/java/subway/domain/Station.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/domain/Station.java b/src/main/java/subway/domain/Station.java
index bdb142590..8a83fe92e 100644
--- a/src/main/java/subway/domain/Station.java
+++ b/src/main/java/subway/domain/Station.java
@@ -11,5 +11,7 @@ public String getName() {
         return name;
     }
 
-    // 추가 기능 구현
+    public boolean isEqualName(String name) {
+        return name.equals(this.name);
+    }
 }

From 65b63ce26777a59ca65c20ee79238814fb98623b Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 15:47:33 +0900
Subject: [PATCH 11/91] style(Station): modify formatting

---
 src/main/java/subway/domain/Station.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/java/subway/domain/Station.java b/src/main/java/subway/domain/Station.java
index 8a83fe92e..5a506810f 100644
--- a/src/main/java/subway/domain/Station.java
+++ b/src/main/java/subway/domain/Station.java
@@ -1,6 +1,7 @@
 package subway.domain;
 
 public class Station {
+
     private String name;
 
     public Station(String name) {

From a896be4516d68ec6207d944e2e413e4f43de4aae Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 15:57:04 +0900
Subject: [PATCH 12/91] feat(StationService): create isEqualStationName
 Function

Function to find out if there is a station with the same name in the station
---
 src/main/java/subway/domain/StationRepository.java | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/main/java/subway/domain/StationRepository.java b/src/main/java/subway/domain/StationRepository.java
index b7245c0f3..63ba92108 100644
--- a/src/main/java/subway/domain/StationRepository.java
+++ b/src/main/java/subway/domain/StationRepository.java
@@ -6,6 +6,7 @@
 import java.util.Objects;
 
 public class StationRepository {
+
     private static final List<Station> stations = new ArrayList<>();
 
     public static List<Station> stations() {
@@ -19,4 +20,13 @@ public static void addStation(Station station) {
     public static boolean deleteStation(String name) {
         return stations.removeIf(station -> Objects.equals(station.getName(), name));
     }
+
+    public static boolean isEqualStationName(String name) {
+        for (Station station : stations) {
+            if (station.isEqualName(name)) {
+                return true;
+            }
+        }
+        return false;
+    }
 }

From 39f8102d1197edb974772858396f530343f807cd Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 16:00:01 +0900
Subject: [PATCH 13/91] refactor(StationService): Check for duplicate station
 name

---
 src/main/java/subway/StationService.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/subway/StationService.java b/src/main/java/subway/StationService.java
index 3bb5abcac..bf33b2a02 100644
--- a/src/main/java/subway/StationService.java
+++ b/src/main/java/subway/StationService.java
@@ -13,6 +13,10 @@ public static boolean addStation(String name) {
             OutPut.printStationNameLengthError();
             return false;
         }
+        if (StationRepository.isEqualStationName(name)) {
+            // TODO - 역 중복관련 메시지 출력함수 호출하기
+            return false;
+        }
         StationRepository.addStation(new Station(name));
         OutPut.printStationCreateMessage();
         return true;

From 2b6e9e9a9443ef155e6daeadb2d0515284da35c6 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 16:05:34 +0900
Subject: [PATCH 14/91] feat(OutPut): create StationNameDuplicateError Function

---
 src/main/java/subway/OutPut.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index 9bc1ae8fe..95cd5f18f 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -6,6 +6,7 @@ public class OutPut {
     public static final String ERROR = "[ERROR] ";
     private static final String STATION_NAME_LENGTH_ERROR = "지하철 역의 이름은 2글자 이상이여야 합니다.\n";
     private static final String STATION_CREATE_MESSAGE = "지하철 역이 등록되었습니다.\n";
+    private static final String STATION_NAME_DUPLICATE_ERROR = "지하철 역의 이름은 중복될 수 없습니다.\n";
 
     public static void printStationNameLengthError() {
         System.out.println(ERROR + STATION_NAME_LENGTH_ERROR);
@@ -15,4 +16,8 @@ public static void printStationCreateMessage() {
         System.out.println(INFO + STATION_CREATE_MESSAGE);
     }
 
+    public static void printStationNameDuplicateError() {
+        System.out.println(ERROR + STATION_NAME_DUPLICATE_ERROR);
+    }
+
 }

From 58369669d6ab75cdf57d936370ee8327a964acd2 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 16:07:54 +0900
Subject: [PATCH 15/91] refactor(StationService): add
 printStationNameDuplicateError Call

---
 src/main/java/subway/StationService.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/java/subway/StationService.java b/src/main/java/subway/StationService.java
index bf33b2a02..90389b1ff 100644
--- a/src/main/java/subway/StationService.java
+++ b/src/main/java/subway/StationService.java
@@ -14,11 +14,11 @@ public static boolean addStation(String name) {
             return false;
         }
         if (StationRepository.isEqualStationName(name)) {
-            // TODO - 역 중복관련 메시지 출력함수 호출하기
+            OutPut.printStationNameDuplicateError();
             return false;
         }
         StationRepository.addStation(new Station(name));
         OutPut.printStationCreateMessage();
         return true;
     }
-}
+}
\ No newline at end of file

From 1cfb27995b443df44eaa429907af0107d3ffca1b Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 16:20:02 +0900
Subject: [PATCH 16/91] feat(DataInitService): create addStation Function:

Function to add basic stations at the beginning
---
 src/main/java/subway/DataInitService.java | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/DataInitService.java b/src/main/java/subway/DataInitService.java
index 92c081f87..ced196a65 100644
--- a/src/main/java/subway/DataInitService.java
+++ b/src/main/java/subway/DataInitService.java
@@ -22,7 +22,12 @@ public static void init() {
     }
 
     private static void addStation() {
-
+        String[] StationNames = {GYODAE_STATION, GANGNAM_STATION, YEOKSAM_STATION,
+            SOUTH_TERMIANL_STATION, YANGJAE_STATION, YANGJAE_CITIZEN_FOREST_STATION,
+            MAEBONG_STATION};
+        for (String stationName : StationNames) {
+            StationService.addStation(stationName);
+        }
     }
 
     private static void addLine() {

From f4d495e1b5bd213b321151e2fc38094644e297ed Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 16:21:44 +0900
Subject: [PATCH 17/91] refactor(Application): call to init

---
 src/main/java/subway/Application.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/java/subway/Application.java b/src/main/java/subway/Application.java
index 0bcf786cc..86a62cc97 100644
--- a/src/main/java/subway/Application.java
+++ b/src/main/java/subway/Application.java
@@ -6,5 +6,6 @@ public class Application {
     public static void main(String[] args) {
         final Scanner scanner = new Scanner(System.in);
         // TODO: 프로그램 구현
+        DataInitService.init();
     }
 }

From a73a51f2e636276d52d3d7ed9a42d32aaa50c486 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 16:24:37 +0900
Subject: [PATCH 18/91] fix(StationService): addStation Message bug fix

Fixed a bug in which the creation result was displayed during initial setting
---
 src/main/java/subway/StationService.java | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/main/java/subway/StationService.java b/src/main/java/subway/StationService.java
index 90389b1ff..68d69ee7e 100644
--- a/src/main/java/subway/StationService.java
+++ b/src/main/java/subway/StationService.java
@@ -7,8 +7,7 @@ public class StationService {
 
     public static final int MIN_STATION_NAME_LENGTH = 2;
 
-    public static boolean addStation(String name) {
-
+    public static boolean addStation(String name, boolean isPrint) {
         if (name.length() < MIN_STATION_NAME_LENGTH) {
             OutPut.printStationNameLengthError();
             return false;
@@ -18,7 +17,9 @@ public static boolean addStation(String name) {
             return false;
         }
         StationRepository.addStation(new Station(name));
-        OutPut.printStationCreateMessage();
+        if (isPrint) {
+            OutPut.printStationCreateMessage();
+        }
         return true;
     }
 }
\ No newline at end of file

From 098aab38326dec62251189627fb76861155b8111 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 16:26:31 +0900
Subject: [PATCH 19/91] fix(DataInitService): addStation Message bug fix

Change calling method
---
 src/main/java/subway/DataInitService.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/subway/DataInitService.java b/src/main/java/subway/DataInitService.java
index ced196a65..4dc43a365 100644
--- a/src/main/java/subway/DataInitService.java
+++ b/src/main/java/subway/DataInitService.java
@@ -26,7 +26,7 @@ private static void addStation() {
             SOUTH_TERMIANL_STATION, YANGJAE_STATION, YANGJAE_CITIZEN_FOREST_STATION,
             MAEBONG_STATION};
         for (String stationName : StationNames) {
-            StationService.addStation(stationName);
+            StationService.addStation(stationName, false);
         }
     }
 

From 69ce4d4fcffa6da932ceb2a4fd00ecf8ecf2c0a9 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 17:02:02 +0900
Subject: [PATCH 20/91] feat(Line): create isEqualName Function

---
 src/main/java/subway/domain/Line.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/domain/Line.java b/src/main/java/subway/domain/Line.java
index f4d738d5a..0bb5bd225 100644
--- a/src/main/java/subway/domain/Line.java
+++ b/src/main/java/subway/domain/Line.java
@@ -11,5 +11,7 @@ public String getName() {
         return name;
     }
 
-    // 추가 기능 구현
+    public boolean isEqualName(String name) {
+        return name.equals(this.name);
+    }
 }

From c65df3767082c8ed5c1bd26d22b308cc1674004f Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 17:05:34 +0900
Subject: [PATCH 21/91] feat(LineRepository): create isEqualLineName Function

Function to find out if the name is the same as the name of the Line
---
 src/main/java/subway/domain/LineRepository.java | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/main/java/subway/domain/LineRepository.java b/src/main/java/subway/domain/LineRepository.java
index 49132ddb6..e63ff8a25 100644
--- a/src/main/java/subway/domain/LineRepository.java
+++ b/src/main/java/subway/domain/LineRepository.java
@@ -19,4 +19,14 @@ public static void addLine(Line line) {
     public static boolean deleteLineByName(String name) {
         return lines.removeIf(line -> Objects.equals(line.getName(), name));
     }
+
+    public static boolean isEqualLineName(String name) {
+        for (Line line : lines) {
+            if (line.isEqualName(name)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
 }

From fb2c6e0e4289bbd85da5ca2538f7aa61fae69257 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 17:08:20 +0900
Subject: [PATCH 22/91] feat(OutPut): create LineLengthError Function

---
 src/main/java/subway/OutPut.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index 95cd5f18f..6232a650a 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -7,6 +7,7 @@ public class OutPut {
     private static final String STATION_NAME_LENGTH_ERROR = "지하철 역의 이름은 2글자 이상이여야 합니다.\n";
     private static final String STATION_CREATE_MESSAGE = "지하철 역이 등록되었습니다.\n";
     private static final String STATION_NAME_DUPLICATE_ERROR = "지하철 역의 이름은 중복될 수 없습니다.\n";
+    private static final String LINE_NAME_LENGTH_ERROR = "지하철 노선의 이름은 2글자 이상이여야 합니다.\n";
 
     public static void printStationNameLengthError() {
         System.out.println(ERROR + STATION_NAME_LENGTH_ERROR);
@@ -20,4 +21,8 @@ public static void printStationNameDuplicateError() {
         System.out.println(ERROR + STATION_NAME_DUPLICATE_ERROR);
     }
 
+    public static void printLineLengthError() {
+        System.out.println(ERROR + LINE_NAME_LENGTH_ERROR);
+    }
+
 }

From 70f1c2745efe6779d85fa7a6322d71b1789b8b37 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 17:11:21 +0900
Subject: [PATCH 23/91] feat(OutPut): create LineNameDuplicateError Function

---
 src/main/java/subway/OutPut.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index 6232a650a..03e4f6270 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -8,6 +8,7 @@ public class OutPut {
     private static final String STATION_CREATE_MESSAGE = "지하철 역이 등록되었습니다.\n";
     private static final String STATION_NAME_DUPLICATE_ERROR = "지하철 역의 이름은 중복될 수 없습니다.\n";
     private static final String LINE_NAME_LENGTH_ERROR = "지하철 노선의 이름은 2글자 이상이여야 합니다.\n";
+    private static final String LINE_NAME_DUPLICATE_ERROR = "지하철 노선의 이름은 중복될 수 없습니다.\n";
 
     public static void printStationNameLengthError() {
         System.out.println(ERROR + STATION_NAME_LENGTH_ERROR);
@@ -25,4 +26,8 @@ public static void printLineLengthError() {
         System.out.println(ERROR + LINE_NAME_LENGTH_ERROR);
     }
 
+    public static void printLineDuplicateError() {
+        System.out.println(ERROR + LINE_NAME_DUPLICATE_ERROR);
+    }
+
 }

From 1ccc9bb70a768cb0383c912ce831ad58f676eb46 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 17:12:30 +0900
Subject: [PATCH 24/91] feat(OutPuut): create LineCreateMessage Function

---
 src/main/java/subway/OutPut.java | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index 03e4f6270..7f6d0a49f 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -9,7 +9,8 @@ public class OutPut {
     private static final String STATION_NAME_DUPLICATE_ERROR = "지하철 역의 이름은 중복될 수 없습니다.\n";
     private static final String LINE_NAME_LENGTH_ERROR = "지하철 노선의 이름은 2글자 이상이여야 합니다.\n";
     private static final String LINE_NAME_DUPLICATE_ERROR = "지하철 노선의 이름은 중복될 수 없습니다.\n";
-
+    private static final String LINE_CREATE_MESSAGE = "지하철 노선이 등록되었습니다.\n";
+    
     public static void printStationNameLengthError() {
         System.out.println(ERROR + STATION_NAME_LENGTH_ERROR);
     }
@@ -30,4 +31,7 @@ public static void printLineDuplicateError() {
         System.out.println(ERROR + LINE_NAME_DUPLICATE_ERROR);
     }
 
+    public static void printLineCreateMessage() {
+        System.out.println(INFO + LINE_CREATE_MESSAGE);
+    }
 }

From aacdaa0bfb957e90543ef92b50d0ceaf3b504335 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 17:15:07 +0900
Subject: [PATCH 25/91] refactor(LineService): add call to message function

---
 src/main/java/subway/LineService.java | 28 +++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 src/main/java/subway/LineService.java

diff --git a/src/main/java/subway/LineService.java b/src/main/java/subway/LineService.java
new file mode 100644
index 000000000..97ecb515a
--- /dev/null
+++ b/src/main/java/subway/LineService.java
@@ -0,0 +1,28 @@
+package subway;
+
+import subway.domain.Line;
+import subway.domain.LineRepository;
+import subway.domain.Station;
+import subway.domain.StationRepository;
+
+public class LineService {
+
+    public static final int MIN_LINE_NAME_LENGTH = 2;
+
+    public static boolean addLine(String lineName, String firstStationName, String lastStationName,
+        boolean isPrint) {
+        if (lineName.length() < MIN_LINE_NAME_LENGTH) {
+            OutPut.printLineLengthError();
+            return true;
+        }
+        if (LineRepository.isEqualLineName(lineName)) {
+            OutPut.printLineDuplicateError();
+            return true;
+        }
+        // TODO - LINE 생성로직 추가하기
+        if (isPrint) {
+            OutPut.printLineCreateMessage();
+        }
+        return true;
+    }
+}

From 638cc50ae0d724016e0a5ef17090f9a5dd6b1930 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 17:35:15 +0900
Subject: [PATCH 26/91] feat(StationRepository): create getStation Function

Function to find stations with the same name
---
 src/main/java/subway/domain/StationRepository.java | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/main/java/subway/domain/StationRepository.java b/src/main/java/subway/domain/StationRepository.java
index 63ba92108..e49b30bab 100644
--- a/src/main/java/subway/domain/StationRepository.java
+++ b/src/main/java/subway/domain/StationRepository.java
@@ -29,4 +29,13 @@ public static boolean isEqualStationName(String name) {
         }
         return false;
     }
+
+    public static Station getStation(String name) {
+        for (Station station : stations) {
+            if (station.isEqualName(name)) {
+                return station;
+            }
+        }
+        return null;
+    }
 }

From a6a35b4bba403029f856722e6940e0aec5cc4e15 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 17:47:52 +0900
Subject: [PATCH 27/91] feat(Line): create initLineInStation Function

Add a function to add an endpoint
---
 src/main/java/subway/domain/Line.java | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/main/java/subway/domain/Line.java b/src/main/java/subway/domain/Line.java
index 0bb5bd225..0be1e5f91 100644
--- a/src/main/java/subway/domain/Line.java
+++ b/src/main/java/subway/domain/Line.java
@@ -1,7 +1,12 @@
 package subway.domain;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class Line {
+
     private String name;
+    private List<Station> lineInStationList = new ArrayList<>();
 
     public Line(String name) {
         this.name = name;
@@ -14,4 +19,9 @@ public String getName() {
     public boolean isEqualName(String name) {
         return name.equals(this.name);
     }
+
+    public void initLineInStation(Station firstStation, Station lastStation) {
+        lineInStationList.add(firstStation);
+        lineInStationList.add(lastStation);
+    }
 }

From 6fa10d5b7e62c16e9d58835cceb57f2afb4a06af Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 18:00:05 +0900
Subject: [PATCH 28/91] feat(LineService): add Line Create logic

add Line Createlogic
call endpoint add function
---
 src/main/java/subway/LineService.java | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/LineService.java b/src/main/java/subway/LineService.java
index 97ecb515a..82df4c49f 100644
--- a/src/main/java/subway/LineService.java
+++ b/src/main/java/subway/LineService.java
@@ -19,7 +19,11 @@ public static boolean addLine(String lineName, String firstStationName, String l
             OutPut.printLineDuplicateError();
             return true;
         }
-        // TODO - LINE 생성로직 추가하기
+        Station firstStation = StationRepository.getStation(firstStationName);
+        Station lastStation = StationRepository.getStation(lastStationName);
+        Line line = new Line(lineName);
+        line.initLineInStation(firstStation, lastStation);
+        LineRepository.addLine(line);
         if (isPrint) {
             OutPut.printLineCreateMessage();
         }

From 12c88f4298276b701f061d7a0b3bc99acde5061e Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 18:02:03 +0900
Subject: [PATCH 29/91] feat(DataInitService): create addLine Function

Function to set the initial route
---
 src/main/java/subway/DataInitService.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/DataInitService.java b/src/main/java/subway/DataInitService.java
index 4dc43a365..90546a6b2 100644
--- a/src/main/java/subway/DataInitService.java
+++ b/src/main/java/subway/DataInitService.java
@@ -31,7 +31,10 @@ private static void addStation() {
     }
 
     private static void addLine() {
-
+        LineService.addLine(LINE_TOW, GYODAE_STATION, YEOKSAM_STATION, false);
+        LineService.addLine(LINE_THREE, GYODAE_STATION, MAEBONG_STATION, false);
+        LineService
+            .addLine(LINE_SINBUNDANG, GANGNAM_STATION, YANGJAE_CITIZEN_FOREST_STATION, false);
     }
 
     private static void addSections() {

From f976c8c5955d7942c88e735b5ac75fb1cd648c53 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 18:28:48 +0900
Subject: [PATCH 30/91] refactor(LineService): Separation of functions

Isolate the ability to check conditions
---
 src/main/java/subway/LineService.java | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/main/java/subway/LineService.java b/src/main/java/subway/LineService.java
index 82df4c49f..30e76ab62 100644
--- a/src/main/java/subway/LineService.java
+++ b/src/main/java/subway/LineService.java
@@ -9,8 +9,7 @@ public class LineService {
 
     public static final int MIN_LINE_NAME_LENGTH = 2;
 
-    public static boolean addLine(String lineName, String firstStationName, String lastStationName,
-        boolean isPrint) {
+    private static boolean isNotLineNameState(String lineName) {
         if (lineName.length() < MIN_LINE_NAME_LENGTH) {
             OutPut.printLineLengthError();
             return true;
@@ -19,6 +18,14 @@ public static boolean addLine(String lineName, String firstStationName, String l
             OutPut.printLineDuplicateError();
             return true;
         }
+        return false;
+    }
+
+    public static boolean addLine(String lineName, String firstStationName, String lastStationName,
+        boolean isPrint) {
+        if (isNotLineNameState(lineName)) {
+            return false;
+        }
         Station firstStation = StationRepository.getStation(firstStationName);
         Station lastStation = StationRepository.getStation(lastStationName);
         Line line = new Line(lineName);

From e8fdf12addee9fff3d67f9909f3bbcf26ebc02fc Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 18:32:17 +0900
Subject: [PATCH 31/91] feat(OutPut): create non exist station error function

---
 src/main/java/subway/OutPut.java | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index 7f6d0a49f..a76348fb4 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -10,7 +10,9 @@ public class OutPut {
     private static final String LINE_NAME_LENGTH_ERROR = "지하철 노선의 이름은 2글자 이상이여야 합니다.\n";
     private static final String LINE_NAME_DUPLICATE_ERROR = "지하철 노선의 이름은 중복될 수 없습니다.\n";
     private static final String LINE_CREATE_MESSAGE = "지하철 노선이 등록되었습니다.\n";
-    
+    private static final String NON_EXIST_STATION_ERROR = "은(는) 존재하지 않는 역입니다.\n";
+
+
     public static void printStationNameLengthError() {
         System.out.println(ERROR + STATION_NAME_LENGTH_ERROR);
     }
@@ -34,4 +36,8 @@ public static void printLineDuplicateError() {
     public static void printLineCreateMessage() {
         System.out.println(INFO + LINE_CREATE_MESSAGE);
     }
+
+    public static void printNonExistStationError(String stationName) {
+        System.out.println(ERROR + stationName + NON_EXIST_STATION_ERROR);
+    }
 }

From 4cca23a17dfb4f9f07e2dee02b3e436aeae82e7a Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 18:34:45 +0900
Subject: [PATCH 32/91] feat(OutPut): create non exist station error function

Create a function to find the case of a subway station that does not existns
---
 src/main/java/subway/LineService.java | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/main/java/subway/LineService.java b/src/main/java/subway/LineService.java
index 30e76ab62..bf94176a9 100644
--- a/src/main/java/subway/LineService.java
+++ b/src/main/java/subway/LineService.java
@@ -21,6 +21,18 @@ private static boolean isNotLineNameState(String lineName) {
         return false;
     }
 
+    private static boolean isNotExistStation(String firstStationName, String lastStationName) {
+        if (!StationRepository.isEqualStationName(firstStationName)) {
+            OutPut.printNonExistStationError(firstStationName);
+            return true;
+        }
+        if (!StationRepository.isEqualStationName(lastStationName)) {
+            OutPut.printNonExistStationError(lastStationName);
+            return true;
+        }
+        return false;
+    }
+
     public static boolean addLine(String lineName, String firstStationName, String lastStationName,
         boolean isPrint) {
         if (isNotLineNameState(lineName)) {

From 16b5e1e080bf4d54798b44d8fad0793c0edef615 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 18:40:28 +0900
Subject: [PATCH 33/91] refactor(LineService): call not exist station function

---
 src/main/java/subway/LineService.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/subway/LineService.java b/src/main/java/subway/LineService.java
index bf94176a9..4a0d99143 100644
--- a/src/main/java/subway/LineService.java
+++ b/src/main/java/subway/LineService.java
@@ -35,7 +35,7 @@ private static boolean isNotExistStation(String firstStationName, String lastSta
 
     public static boolean addLine(String lineName, String firstStationName, String lastStationName,
         boolean isPrint) {
-        if (isNotLineNameState(lineName)) {
+        if (isNotLineNameState(lineName) || isNotExistStation(firstStationName, lastStationName)) {
             return false;
         }
         Station firstStation = StationRepository.getStation(firstStationName);

From 2e16869027abb9001f3a07d96f3a838114ea3b12 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 19:36:37 +0900
Subject: [PATCH 34/91] feat(OutPut): create NonExistLineError function

---
 src/main/java/subway/OutPut.java | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index a76348fb4..78c3b34ae 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -11,7 +11,7 @@ public class OutPut {
     private static final String LINE_NAME_DUPLICATE_ERROR = "지하철 노선의 이름은 중복될 수 없습니다.\n";
     private static final String LINE_CREATE_MESSAGE = "지하철 노선이 등록되었습니다.\n";
     private static final String NON_EXIST_STATION_ERROR = "은(는) 존재하지 않는 역입니다.\n";
-
+    private static final String NON_EXIST_LINE_ERROR = "존재하지 않는 노선입니다.\n";
 
     public static void printStationNameLengthError() {
         System.out.println(ERROR + STATION_NAME_LENGTH_ERROR);
@@ -40,4 +40,9 @@ public static void printLineCreateMessage() {
     public static void printNonExistStationError(String stationName) {
         System.out.println(ERROR + stationName + NON_EXIST_STATION_ERROR);
     }
+
+    public static void printNonExistLineError() {
+        System.out.println(ERROR + NON_EXIST_LINE_ERROR);
+    }
+    
 }

From fa3d326f9764891522b91bfbd674f1a2a17dc349 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 19:47:47 +0900
Subject: [PATCH 35/91] feat(SectionService): create Line and Station exist
 Function

Function to check if there are no lines and stations
---
 src/main/java/subway/SectionService.java | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 src/main/java/subway/SectionService.java

diff --git a/src/main/java/subway/SectionService.java b/src/main/java/subway/SectionService.java
new file mode 100644
index 000000000..03511e64e
--- /dev/null
+++ b/src/main/java/subway/SectionService.java
@@ -0,0 +1,24 @@
+package subway;
+
+import subway.domain.Line;
+import subway.domain.LineRepository;
+import subway.domain.Station;
+import subway.domain.StationRepository;
+
+public class SectionService {
+
+    private static final int DELETE_MIN_SIZE = 2;
+
+    private static boolean isNotExistLineAndStation(String lineName, String stationName) {
+        if (!LineRepository.isEqualLineName(lineName)) {
+            OutPut.printNonExistLineError();
+            return true;
+        }
+        if (!StationRepository.isEqualStationName(stationName)) {
+            OutPut.printNonExistStationError(stationName);
+            return true;
+        }
+        return false;
+    }
+
+}

From 11234807cbd0d71610b182c810897b55ff3b8df6 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 20:03:51 +0900
Subject: [PATCH 36/91] feat(Line): create exist station function

A function to check if the subway station exists on the line
---
 src/main/java/subway/domain/Line.java | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/main/java/subway/domain/Line.java b/src/main/java/subway/domain/Line.java
index 0be1e5f91..bd7ce3754 100644
--- a/src/main/java/subway/domain/Line.java
+++ b/src/main/java/subway/domain/Line.java
@@ -24,4 +24,13 @@ public void initLineInStation(Station firstStation, Station lastStation) {
         lineInStationList.add(firstStation);
         lineInStationList.add(lastStation);
     }
+
+    public boolean isExistStation(String name) {
+        for (Station station : lineInStationList) {
+            if (station.isEqualName(name)) {
+                return true;
+            }
+        }
+        return false;
+    }
 }

From 708c014b7d784408b635d9a337828138b41a6843 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 20:06:22 +0900
Subject: [PATCH 37/91] feat(OutPut): create exist station error function

---
 src/main/java/subway/OutPut.java | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index 78c3b34ae..17d6b1311 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -12,6 +12,7 @@ public class OutPut {
     private static final String LINE_CREATE_MESSAGE = "지하철 노선이 등록되었습니다.\n";
     private static final String NON_EXIST_STATION_ERROR = "은(는) 존재하지 않는 역입니다.\n";
     private static final String NON_EXIST_LINE_ERROR = "존재하지 않는 노선입니다.\n";
+    private static final String EXIST_STATION_ERROR = "노선에 이미 존재하는 역입니다.\n";
 
     public static void printStationNameLengthError() {
         System.out.println(ERROR + STATION_NAME_LENGTH_ERROR);
@@ -44,5 +45,9 @@ public static void printNonExistStationError(String stationName) {
     public static void printNonExistLineError() {
         System.out.println(ERROR + NON_EXIST_LINE_ERROR);
     }
-    
+
+    public static void printExistStationError() {
+        System.out.println(ERROR + EXIST_STATION_ERROR);
+    }
+
 }

From e26792040e4798cbcc94abff9a9b2f2f82d03b67 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 20:09:02 +0900
Subject: [PATCH 38/91] feat(SectionService): create exist station Function

A function to check whether a subway station exists on the line
---
 src/main/java/subway/SectionService.java | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/main/java/subway/SectionService.java b/src/main/java/subway/SectionService.java
index 03511e64e..20ed4a026 100644
--- a/src/main/java/subway/SectionService.java
+++ b/src/main/java/subway/SectionService.java
@@ -21,4 +21,12 @@ private static boolean isNotExistLineAndStation(String lineName, String stationN
         return false;
     }
 
+    private static boolean isExistStation(Line line, String stationName) {
+        if (line.isExistStation(stationName)) {
+            OutPut.printExistStationError();
+            return true;
+        }
+        return false;
+    }
+
 }

From f5fe2e8ec6270ffa320d8554a0350661a567a545 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 20:23:36 +0900
Subject: [PATCH 39/91] feat(LineRepository): create getLine Function

A function to find a line that matches the name
---
 src/main/java/subway/domain/LineRepository.java | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/main/java/subway/domain/LineRepository.java b/src/main/java/subway/domain/LineRepository.java
index e63ff8a25..c76333b2e 100644
--- a/src/main/java/subway/domain/LineRepository.java
+++ b/src/main/java/subway/domain/LineRepository.java
@@ -29,4 +29,13 @@ public static boolean isEqualLineName(String name) {
         return false;
     }
 
+    public static Line getLine(String name) {
+        for (Line line : lines) {
+            if (line.isEqualName(name)) {
+                return line;
+            }
+        }
+        return null;
+    }
+
 }

From 62563332b6ee8801123c73e06b3847d524daa7a1 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 20:34:54 +0900
Subject: [PATCH 40/91] feat(Line): create insert line in station function

Function to insert a subway station on a line
---
 src/main/java/subway/domain/Line.java | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/main/java/subway/domain/Line.java b/src/main/java/subway/domain/Line.java
index bd7ce3754..2746b3c9d 100644
--- a/src/main/java/subway/domain/Line.java
+++ b/src/main/java/subway/domain/Line.java
@@ -33,4 +33,12 @@ public boolean isExistStation(String name) {
         }
         return false;
     }
+
+    public void insertLineInStation(Station station, int index) {
+        if (index > lineInStationList.size()) {
+            lineInStationList.add(lineInStationList.size(), station);
+            return;
+        }
+        lineInStationList.add(index, station);
+    }
 }

From c5d4eb879c0632366ca6af667622113fba9e32a7 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 20:39:57 +0900
Subject: [PATCH 41/91] feat(OutPut): create section add success message
 function

---
 src/main/java/subway/OutPut.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index 17d6b1311..484f387e6 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -13,6 +13,7 @@ public class OutPut {
     private static final String NON_EXIST_STATION_ERROR = "은(는) 존재하지 않는 역입니다.\n";
     private static final String NON_EXIST_LINE_ERROR = "존재하지 않는 노선입니다.\n";
     private static final String EXIST_STATION_ERROR = "노선에 이미 존재하는 역입니다.\n";
+    private static final String SECTION_ADD_MESSAGE = "구간이 등록되었습니다.\n";
 
     public static void printStationNameLengthError() {
         System.out.println(ERROR + STATION_NAME_LENGTH_ERROR);
@@ -50,4 +51,7 @@ public static void printExistStationError() {
         System.out.println(ERROR + EXIST_STATION_ERROR);
     }
 
+    public static void printSectionAddMessage() {
+        System.out.println(INFO + SECTION_ADD_MESSAGE);
+    }
 }

From cd0d96b474f9fe6d6e0ee9e381bff88da535da6b Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 21:11:54 +0900
Subject: [PATCH 42/91] feat(SectionService): create addSection Function

Function to insert a subway station on a line
---
 src/main/java/subway/SectionService.java | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/main/java/subway/SectionService.java b/src/main/java/subway/SectionService.java
index 20ed4a026..bdf96f0ad 100644
--- a/src/main/java/subway/SectionService.java
+++ b/src/main/java/subway/SectionService.java
@@ -29,4 +29,21 @@ private static boolean isExistStation(Line line, String stationName) {
         return false;
     }
 
+    public static boolean addSection(String lineName, String stationName, int stationIndex,
+        boolean isPrint) {
+        if (isNotExistLineAndStation(lineName, stationName)) {
+            return false;
+        }
+        Line line = LineRepository.getLine(lineName);
+        if (isExistStation(line, stationName)) {
+            return false;
+        }
+        Station station = StationRepository.getStation(stationName);
+        line.insertLineInStation(station, stationIndex);
+        if (isPrint) {
+            OutPut.printSectionAddMessage();
+        }
+        return true;
+    }
+
 }

From fe962df85f7f90ccad4b1847057944a1af5e65bf Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 21:19:33 +0900
Subject: [PATCH 43/91] feat(DataInitService): create addSections Function

---
 src/main/java/subway/DataInitService.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/DataInitService.java b/src/main/java/subway/DataInitService.java
index 90546a6b2..9319491fc 100644
--- a/src/main/java/subway/DataInitService.java
+++ b/src/main/java/subway/DataInitService.java
@@ -38,7 +38,10 @@ private static void addLine() {
     }
 
     private static void addSections() {
-
+        SectionService.addSection(LINE_TOW, GANGNAM_STATION, ONE, false);
+        SectionService.addSection(LINE_THREE, SOUTH_TERMIANL_STATION, ONE, false);
+        SectionService.addSection(LINE_THREE, YANGJAE_STATION, TWO, false);
+        SectionService.addSection(LINE_SINBUNDANG, YANGJAE_STATION, ONE, false);
     }
 
 }

From e79620167d92b77ad3254f572e2845d8188bcdf7 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 22:47:11 +0900
Subject: [PATCH 44/91] feat(UserInterfaceView): create UserInterfaceView Class

---
 src/main/java/subway/UserInterfaceView.java | 69 +++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 src/main/java/subway/UserInterfaceView.java

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
new file mode 100644
index 000000000..46f06e7e0
--- /dev/null
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -0,0 +1,69 @@
+package subway;
+
+import java.util.Scanner;
+
+public class UserInterfaceView {
+
+    private static final String MAIN_VIEW = "## 메인 화면";
+    private static final String STATION_MANAGEMENT = "1. 역 관리";
+    private static final String LINE_MANAGEMENT = "2. 노선 관리";
+    private static final String SECTION_MANAGEMENT = "3. 구간 관리";
+    private static final String SUBWAY_LINES_PRINT = "4. 지하철 노선도 출력";
+    private static final String QUIT = "Q. 종료";
+    private static final String[] MAIN_INTERFACE = {MAIN_VIEW, STATION_MANAGEMENT, LINE_MANAGEMENT,
+        SECTION_MANAGEMENT, SUBWAY_LINES_PRINT, QUIT};
+    private static final String STATION_MANAGEMENT_VIEW = "## 역 관리 화면";
+    private static final String STATION_ADD = "1. 역 등록";
+    private static final String STATION_DELETE = "2. 역 삭제";
+    private static final String STATION_PRINT = "3. 역 조회";
+    private static final String BACK = "B. 돌아가기";
+    private static final String[] STATION_INTERFACE = {STATION_MANAGEMENT_VIEW, STATION_ADD,
+        STATION_DELETE, STATION_PRINT, BACK};
+    private static final String LINE_VIEW = "## 노선 관리 화면";
+    private static final String LINE_ADD = "1. 노선 등록";
+    private static final String LINE_DELETE = "2. 노선 삭제";
+    private static final String LINE_PRINT = "3. 노선 조회";
+    private static final String[] LINE_INTERFACE = {LINE_VIEW, LINE_ADD, LINE_DELETE, LINE_PRINT,
+        BACK};
+    private static final String CHOICE_FUNCTION = "## 원하는 기능을 선택하세요.";
+    private static final String SECTION_ADD = "1. 구간 등록";
+    private static final String SECTION_DELETE = "2. 구간 삭제";
+    private static final String[] SECTION_INTERFACE = {SECTION_ADD, SECTION_DELETE, BACK};
+    private static final String ONE_STRING = "1";
+    private static final String TWO_STRING = "2";
+    private static final String THREE_STRING = "3";
+    private static final String FOUR_STRING = "4";
+    private static final String B = "B";
+    private static final String Q = "Q";
+    private static final String FUNCTION_ERROR_MESSAGE = OutPut.ERROR + "선택할 수 없는 기능입니다.\n";
+    private static final String[] MAIN_CHOICE_LIST = {ONE_STRING, TWO_STRING, THREE_STRING,
+        FOUR_STRING, Q};
+    private static final String[] STATION_AND_LINE_CHOICE_LIST = {ONE_STRING, TWO_STRING,
+        THREE_STRING, B};
+    private static final String[] SECTION_LIST = {ONE_STRING, TWO_STRING, B};
+    private static final String STATION_LIST = "## 역 목록";
+    private static final String LINE_LIST = "## 노선 목록";
+    private static final String SUBWAY_LINES_LIST = "## 지하철 노선도";
+    private static final String INPUT_ADD_STATION_NAME = "## 등록할 역 이름을 입력하세요.";
+    private static final String INPUT_DELETE_STATION_NAME = "## 삭제할 역 이름을 입력하세요.";
+    private static final String INPUT_ADD_LINE_NAME = "## 등록할 노선 이름을 입력하세요.";
+    private static final String INPUT_LINE_IN_FIRST_STATION = "## 등록할 노선의 상행 종점역 이름을 입력하세요.";
+    private static final String INPUT_LINE_IN_LAST_STATION = "## 등록할 노선의 하행 종점역 이름을 입력하세요.";
+    private static final String INPUT_DELETE_LINE_NAME = "## 삭제할 노선 이름을 입력하세요.";
+    private static final String INPUT_SECTION_LINE_NAME = "## 노선을 입력하세요.";
+    private static final String INPUT_SECTION_STATION_NAME = "## 역이름을 입력하세요.";
+    private static final String INPUT_SECTION_ORDER = "## 순서를 입력하세요.";
+    private static final String INPUT_SECTION_DELETE_LINE_NAME = "## 삭제할 구간의 노선을 입력하세요.";
+    private static final String INPUT_SECTION_DELETE_STATION_NAME = "## 삭제할 구간의 역을 입력하세요.";
+    private static final String INPUT_TYPE_ERROR = OutPut.ERROR + "숫자만 입력이 가능합니다.\n";
+    private static final String INPUT_NUMBER_ERROR = OutPut.ERROR + "음수는 입력이 불가능합니다.\n";
+    private static final int ZERO = 0;
+
+    private Scanner scanner;
+
+    public UserInterfaceView(Scanner scanner) {
+        this.scanner = scanner;
+    }
+
+
+}

From 52ec26e6208f74bcd507c46da9c5ffc4b66d5654 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 23:04:21 +0900
Subject: [PATCH 45/91] feat(UserInterfaceView): create start Funcion

---
 src/main/java/subway/UserInterfaceView.java | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 46f06e7e0..389fcdc5e 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -1,5 +1,6 @@
 package subway;
 
+import java.util.Arrays;
 import java.util.Scanner;
 
 public class UserInterfaceView {
@@ -65,5 +66,16 @@ public UserInterfaceView(Scanner scanner) {
         this.scanner = scanner;
     }
 
+    public void start() {
+        while (true) {
+            if (mainStartAndReturnIsQuit()) {
+                break;
+            }
+        }
+    }
+
+    public boolean mainStartAndReturnIsQuit() {
 
+        return false;
+    }
 }

From 6ab4b9785fd9ed1d01cd77a603f08c1f86c3dbd1 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 23:06:22 +0900
Subject: [PATCH 46/91] refactor(Application): call userInterfaceView start
 Function

---
 src/main/java/subway/Application.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/main/java/subway/Application.java b/src/main/java/subway/Application.java
index 86a62cc97..ba66ffdf5 100644
--- a/src/main/java/subway/Application.java
+++ b/src/main/java/subway/Application.java
@@ -3,9 +3,12 @@
 import java.util.Scanner;
 
 public class Application {
+
     public static void main(String[] args) {
         final Scanner scanner = new Scanner(System.in);
         // TODO: 프로그램 구현
         DataInitService.init();
+        UserInterfaceView userInterfaceView = new UserInterfaceView(scanner);
+        userInterfaceView.start();
     }
 }

From 944df463cbe93fe036d7c21afdc702703ce31c00 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 23:12:22 +0900
Subject: [PATCH 47/91] feat(UserInterfaceView): create printMainView Function

---
 src/main/java/subway/UserInterfaceView.java | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 389fcdc5e..204989f9c 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -75,7 +75,14 @@ public void start() {
     }
 
     public boolean mainStartAndReturnIsQuit() {
-
+        printMainView();
         return false;
     }
+
+    private void printMainView() {
+        for (String str : MAIN_INTERFACE) {
+            System.out.println(str);
+        }
+        System.out.println();
+    }
 }

From 92ed8046e735512b64cafaaf1374313bf00b7e57 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 23:34:04 +0900
Subject: [PATCH 48/91] feat(UserInterfaceView): create getUserInput Function

---
 src/main/java/subway/UserInterfaceView.java | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 204989f9c..1b7d4c5ea 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -76,6 +76,13 @@ public void start() {
 
     public boolean mainStartAndReturnIsQuit() {
         printMainView();
+        String userInput;
+        while (true) {
+            userInput = getUserInput(CHOICE_FUNCTION);
+            if (Arrays.asList(MAIN_CHOICE_LIST).contains(userInput)) {
+                break;
+            }
+        }
         return false;
     }
 
@@ -85,4 +92,11 @@ private void printMainView() {
         }
         System.out.println();
     }
+
+    private String getUserInput(String str) {
+        System.out.println(str);
+        String userInput = scanner.next();
+        System.out.println();
+        return userInput;
+    }
 }

From ff10c8eb19f9d771c6778af92b3cf5d56d0bd86e Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 23:36:54 +0900
Subject: [PATCH 49/91] feat(UserInterfaceView): create printErrorMessage
 Function

---
 src/main/java/subway/UserInterfaceView.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 1b7d4c5ea..b529d02fa 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -82,6 +82,7 @@ public boolean mainStartAndReturnIsQuit() {
             if (Arrays.asList(MAIN_CHOICE_LIST).contains(userInput)) {
                 break;
             }
+            printErrorMessage();
         }
         return false;
     }
@@ -99,4 +100,8 @@ private String getUserInput(String str) {
         System.out.println();
         return userInput;
     }
+
+    private void printErrorMessage() {
+        System.out.println(FUNCTION_ERROR_MESSAGE);
+    }
 }

From db9a9a7d65f0e2032255434257ce7a369161a661 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 23:38:02 +0900
Subject: [PATCH 50/91] feat(UserInterfaceView): create isQuit Function

---
 src/main/java/subway/UserInterfaceView.java | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index b529d02fa..75fbbdd15 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -84,6 +84,9 @@ public boolean mainStartAndReturnIsQuit() {
             }
             printErrorMessage();
         }
+        if (isQuit(userInput)) {
+            return true;
+        }
         return false;
     }
 
@@ -104,4 +107,8 @@ private String getUserInput(String str) {
     private void printErrorMessage() {
         System.out.println(FUNCTION_ERROR_MESSAGE);
     }
+
+    private boolean isQuit(String userInput) {
+        return Q.equals(userInput);
+    }
 }

From 6e2737ea196429060c82fff6ebaf37500f915849 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 23:58:13 +0900
Subject: [PATCH 51/91] feat(UserInterfaceView): create mainToNextFunction
 Function

---
 src/main/java/subway/UserInterfaceView.java | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 75fbbdd15..ab5701681 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -87,6 +87,7 @@ public boolean mainStartAndReturnIsQuit() {
         if (isQuit(userInput)) {
             return true;
         }
+
         return false;
     }
 
@@ -111,4 +112,18 @@ private void printErrorMessage() {
     private boolean isQuit(String userInput) {
         return Q.equals(userInput);
     }
+
+    private void mainToNextFunction(String userInput) {
+        if (ONE_STRING.equals(userInput)) {
+            return;
+        }
+        if (TWO_STRING.equals(userInput)) {
+            return;
+        }
+        if (THREE_STRING.equals(userInput)) {
+            return;
+        }
+        if (FOUR_STRING.equals(userInput)) {
+        }
+    }
 }

From 178799ab285e376717415b6c528d4cfd40117868 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Mon, 14 Dec 2020 23:59:16 +0900
Subject: [PATCH 52/91] refactor(UserInterfaceView): add call
 mainToNextFunction

---
 src/main/java/subway/UserInterfaceView.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index ab5701681..ca5e67c5d 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -87,7 +87,7 @@ public boolean mainStartAndReturnIsQuit() {
         if (isQuit(userInput)) {
             return true;
         }
-
+        mainToNextFunction(userInput);
         return false;
     }
 

From 3ef4622eba03af95b4e2e5c7f515256162487efd Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 00:07:23 +0900
Subject: [PATCH 53/91] feat(UserInterfaceView): create printStationView
 Function

---
 src/main/java/subway/UserInterfaceView.java | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index ca5e67c5d..8ed34922d 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -115,6 +115,7 @@ private boolean isQuit(String userInput) {
 
     private void mainToNextFunction(String userInput) {
         if (ONE_STRING.equals(userInput)) {
+            stationStart();
             return;
         }
         if (TWO_STRING.equals(userInput)) {
@@ -126,4 +127,15 @@ private void mainToNextFunction(String userInput) {
         if (FOUR_STRING.equals(userInput)) {
         }
     }
+
+    private void stationStart() {
+        printStationView();
+    }
+
+    private void printStationView() {
+        for (String str : STATION_INTERFACE) {
+            System.out.println(str);
+        }
+        System.out.println();
+    }
 }

From 725031b0f54169f44f2b70b199b7a3e359e08333 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 00:17:46 +0900
Subject: [PATCH 54/91] refactor(UserInterfaceView): stationStart Function
 update

add userInput logic
---
 src/main/java/subway/UserInterfaceView.java | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 8ed34922d..bf32119c8 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -130,6 +130,15 @@ private void mainToNextFunction(String userInput) {
 
     private void stationStart() {
         printStationView();
+        String userInput;
+        while (true) {
+            userInput = getUserInput(CHOICE_FUNCTION);
+            if (Arrays.asList(STATION_AND_LINE_CHOICE_LIST).contains(userInput)) {
+                break;
+            }
+            printErrorMessage();
+        }
+        
     }
 
     private void printStationView() {

From 96e5fdcc6595ec534c5449ee08ee9650d4621234 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 00:28:46 +0900
Subject: [PATCH 55/91] feat(UserInterfaceView): create stationToNextFunction

---
 src/main/java/subway/UserInterfaceView.java | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index bf32119c8..b4d0ec890 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -138,7 +138,7 @@ private void stationStart() {
             }
             printErrorMessage();
         }
-        
+        stationToNextFunction(userInput);
     }
 
     private void printStationView() {
@@ -147,4 +147,18 @@ private void printStationView() {
         }
         System.out.println();
     }
+
+    private void stationToNextFunction(String userInput) {
+        if (ONE_STRING.equals(userInput)) {
+
+            return;
+        }
+        if (TWO_STRING.equals(userInput)) {
+
+            return;
+        }
+        if (THREE_STRING.equals(userInput)) {
+
+        }
+    }
 }

From 97bdfca36349202e4ab5d1d0061ce5e7bc338759 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 00:36:43 +0900
Subject: [PATCH 56/91] feat(UserInterfaceView): create addStation Function

---
 src/main/java/subway/UserInterfaceView.java | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index b4d0ec890..74cd87585 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -150,7 +150,7 @@ private void printStationView() {
 
     private void stationToNextFunction(String userInput) {
         if (ONE_STRING.equals(userInput)) {
-
+            addStation();
             return;
         }
         if (TWO_STRING.equals(userInput)) {
@@ -161,4 +161,11 @@ private void stationToNextFunction(String userInput) {
 
         }
     }
+
+    private void addStation() {
+        String stationName = getUserInput(INPUT_ADD_STATION_NAME);
+        if (!StationService.addStation(stationName, true)) {
+            stationStart();
+        }
+    }
 }

From eff131b1324be5f37173f7a426b131a6c968d78a Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 01:06:52 +0900
Subject: [PATCH 57/91] feat(LineRepository): create isExistStation Function

Function to find out if a subway station is registered on a line
---
 src/main/java/subway/domain/LineRepository.java | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/main/java/subway/domain/LineRepository.java b/src/main/java/subway/domain/LineRepository.java
index c76333b2e..5f5432a5a 100644
--- a/src/main/java/subway/domain/LineRepository.java
+++ b/src/main/java/subway/domain/LineRepository.java
@@ -38,4 +38,12 @@ public static Line getLine(String name) {
         return null;
     }
 
+    public static boolean isExistStation(String name) {
+        for (Line line : lines) {
+            if (line.isExistStation(name)) {
+                return true;
+            }
+        }
+        return false;
+    }
 }

From e9f694dffb582ff100ed627be2b3cc99a3b8ee3f Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 01:08:09 +0900
Subject: [PATCH 58/91] feat(StationRepository): create isExistStation Function

call LineRepository isExistStation Function
---
 src/main/java/subway/domain/StationRepository.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/subway/domain/StationRepository.java b/src/main/java/subway/domain/StationRepository.java
index e49b30bab..ead5283af 100644
--- a/src/main/java/subway/domain/StationRepository.java
+++ b/src/main/java/subway/domain/StationRepository.java
@@ -38,4 +38,8 @@ public static Station getStation(String name) {
         }
         return null;
     }
+
+    public static boolean isExistByLineInStation(String name) {
+        return LineRepository.isExistStation(name);
+    }
 }

From c059c61860ca734dbc9c4327a0d71472223712a1 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 01:10:49 +0900
Subject: [PATCH 59/91] feat(OutPut): create StationDeleteError Function

---
 src/main/java/subway/OutPut.java | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index 484f387e6..0b211824d 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -14,6 +14,8 @@ public class OutPut {
     private static final String NON_EXIST_LINE_ERROR = "존재하지 않는 노선입니다.\n";
     private static final String EXIST_STATION_ERROR = "노선에 이미 존재하는 역입니다.\n";
     private static final String SECTION_ADD_MESSAGE = "구간이 등록되었습니다.\n";
+    private static final String STATION_DELETE_ERROR = "노선에 등록된 지하철 역은 삭제할 수 없습니다.\n";
+    private static final String STATION_DELETE_MESSAGE = "지하철 역이 삭제되었습니다.\n";
 
     public static void printStationNameLengthError() {
         System.out.println(ERROR + STATION_NAME_LENGTH_ERROR);
@@ -54,4 +56,8 @@ public static void printExistStationError() {
     public static void printSectionAddMessage() {
         System.out.println(INFO + SECTION_ADD_MESSAGE);
     }
+
+    public static void printStationDeleteError() {
+        System.out.println(ERROR + STATION_DELETE_ERROR);
+    }
 }

From f42cae17fe23e9d4fe02ca3ea867808ed0db611c Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 01:11:21 +0900
Subject: [PATCH 60/91] feat(OutPut): create StationDeleteMessage Function

---
 src/main/java/subway/OutPut.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index 0b211824d..7bf778daa 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -60,4 +60,8 @@ public static void printSectionAddMessage() {
     public static void printStationDeleteError() {
         System.out.println(ERROR + STATION_DELETE_ERROR);
     }
+
+    public static void printStationDeleteMessage() {
+        System.out.println(INFO + STATION_DELETE_MESSAGE);
+    }
 }

From f36eaa2c2a40ee9e1580d847f361dd214388aa48 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 02:02:49 +0900
Subject: [PATCH 61/91] feat(StationService): create deleteStation Function

---
 src/main/java/subway/StationService.java | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/main/java/subway/StationService.java b/src/main/java/subway/StationService.java
index 68d69ee7e..0eb35d593 100644
--- a/src/main/java/subway/StationService.java
+++ b/src/main/java/subway/StationService.java
@@ -8,6 +8,7 @@ public class StationService {
     public static final int MIN_STATION_NAME_LENGTH = 2;
 
     public static boolean addStation(String name, boolean isPrint) {
+        // TODO - 조건검사 함수 분리하기
         if (name.length() < MIN_STATION_NAME_LENGTH) {
             OutPut.printStationNameLengthError();
             return false;
@@ -22,4 +23,17 @@ public static boolean addStation(String name, boolean isPrint) {
         }
         return true;
     }
+
+    public static boolean deleteStation(String name) {
+        if (StationRepository.isExistByLineInStation(name)) {
+            OutPut.printStationDeleteError();
+            return false;
+        }
+        if (!StationRepository.deleteStation(name)) {
+            OutPut.printNonExistStationError(name);
+            return false;
+        }
+        OutPut.printStationDeleteMessage();
+        return true;
+    }
 }
\ No newline at end of file

From 3451187dc070bbc400a8ae5582a34f83e9e9c3fc Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 02:11:07 +0900
Subject: [PATCH 62/91] feat(UserInterfaceView): create deleteStation Function

---
 src/main/java/subway/UserInterfaceView.java | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 74cd87585..61fa7b4c7 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -154,7 +154,7 @@ private void stationToNextFunction(String userInput) {
             return;
         }
         if (TWO_STRING.equals(userInput)) {
-
+            deleteStation();
             return;
         }
         if (THREE_STRING.equals(userInput)) {
@@ -168,4 +168,11 @@ private void addStation() {
             stationStart();
         }
     }
+
+    private void deleteStation() {
+        String stationName = getUserInput(INPUT_DELETE_STATION_NAME);
+        if (!StationService.deleteStation(stationName)) {
+            stationStart();
+        }
+    }
 }

From 17acdf248986bf8959146f8e82a149e71208d3a5 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 02:18:43 +0900
Subject: [PATCH 63/91] feat(OutPut): create infoPrint Function

---
 src/main/java/subway/OutPut.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index 7bf778daa..547e0ec17 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -64,4 +64,8 @@ public static void printStationDeleteError() {
     public static void printStationDeleteMessage() {
         System.out.println(INFO + STATION_DELETE_MESSAGE);
     }
+
+    public static void printName(String name) {
+        System.out.println(INFO + name);
+    }
 }

From 940c533d0474387e7d8fe26d66e659a7a3fd69c7 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 02:24:49 +0900
Subject: [PATCH 64/91] feat(StationService): create station info print
 function

---
 src/main/java/subway/StationService.java | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/main/java/subway/StationService.java b/src/main/java/subway/StationService.java
index 0eb35d593..04a17c6df 100644
--- a/src/main/java/subway/StationService.java
+++ b/src/main/java/subway/StationService.java
@@ -36,4 +36,10 @@ public static boolean deleteStation(String name) {
         OutPut.printStationDeleteMessage();
         return true;
     }
+
+    public static void print() {
+        for (Station station : StationRepository.stations()) {
+            OutPut.printName(station.getName());
+        }
+    }
 }
\ No newline at end of file

From 1b3bc7411acf07200f586b822a541036bd3ae9f7 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 02:33:56 +0900
Subject: [PATCH 65/91] feat(UserInterfaceView): create station info print
 function

---
 src/main/java/subway/UserInterfaceView.java | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 61fa7b4c7..8ebbd410c 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -158,7 +158,7 @@ private void stationToNextFunction(String userInput) {
             return;
         }
         if (THREE_STRING.equals(userInput)) {
-
+            printStation();
         }
     }
 
@@ -175,4 +175,10 @@ private void deleteStation() {
             stationStart();
         }
     }
+
+    private void printStation() {
+        System.out.println(STATION_LIST);
+        StationService.print();
+        System.out.println();
+    }
 }

From e026ab8c881594c1fb721821f3f503dcd13e737e Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 02:48:23 +0900
Subject: [PATCH 66/91] feat(UserInterfaceView): create printLineView function

---
 src/main/java/subway/UserInterfaceView.java | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 8ebbd410c..8f3bf4d09 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -119,6 +119,7 @@ private void mainToNextFunction(String userInput) {
             return;
         }
         if (TWO_STRING.equals(userInput)) {
+            lineStart();
             return;
         }
         if (THREE_STRING.equals(userInput)) {
@@ -181,4 +182,15 @@ private void printStation() {
         StationService.print();
         System.out.println();
     }
+
+    private void lineStart() {
+        printLineView();
+    }
+
+    private void printLineView() {
+        for (String str : LINE_INTERFACE) {
+            System.out.println(str);
+        }
+        System.out.println();
+    }
 }

From 98dc56a4458d63292b58f33528c4ae1220c2b71b Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 02:54:48 +0900
Subject: [PATCH 67/91] refactor(UserInterfaceView): lineStart Function update

add userInput logic and printErrorMessage
---
 src/main/java/subway/UserInterfaceView.java | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 8f3bf4d09..4557f6ce2 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -185,6 +185,14 @@ private void printStation() {
 
     private void lineStart() {
         printLineView();
+        String userInput;
+        while (true) {
+            userInput = getUserInput(CHOICE_FUNCTION);
+            if (Arrays.asList(STATION_AND_LINE_CHOICE_LIST).contains(userInput)) {
+                break;
+            }
+            printErrorMessage();
+        }
     }
 
     private void printLineView() {

From bf26c86ca6a1ed83e92b1eae058b19815db1b6bd Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 03:19:41 +0900
Subject: [PATCH 68/91] feat(UserInterfaceView): create lineToNextFunction

---
 src/main/java/subway/UserInterfaceView.java | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 4557f6ce2..e031fa1fd 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -193,6 +193,7 @@ private void lineStart() {
             }
             printErrorMessage();
         }
+        lineToNextFunction(userInput);
     }
 
     private void printLineView() {
@@ -201,4 +202,20 @@ private void printLineView() {
         }
         System.out.println();
     }
+
+    private void lineToNextFunction(String userInput) {
+        if (ONE_STRING.equals(userInput)) {
+            addLine();
+            return;
+        }
+        if (TWO_STRING.equals(userInput)) {
+
+            return;
+        }
+        if (THREE_STRING.equals(userInput)) {
+
+        }
+    }
+
+    
 }

From 9d523cf9913bd5e8b259c059adf4586929097ea2 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 03:42:12 +0900
Subject: [PATCH 69/91] feat(UserInterfaceView): create addLine Function

---
 src/main/java/subway/UserInterfaceView.java | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index e031fa1fd..a21a224a6 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -217,5 +217,12 @@ private void lineToNextFunction(String userInput) {
         }
     }
 
-    
+    private void addLine() {
+        String lineName = getUserInput(INPUT_ADD_LINE_NAME);
+        String firstStationName = getUserInput(INPUT_LINE_IN_FIRST_STATION);
+        String lastStationName = getUserInput(INPUT_LINE_IN_LAST_STATION);
+        if (!LineService.addLine(lineName, firstStationName, lastStationName, true)) {
+            lineStart();
+        }
+    }
 }

From b7f9998237994d7b0d88ff742828c57c809b511c Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 03:58:05 +0900
Subject: [PATCH 70/91] feat(OutPut): create LineDeleteMessage Function

---
 src/main/java/subway/OutPut.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index 547e0ec17..bc84a093b 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -16,6 +16,7 @@ public class OutPut {
     private static final String SECTION_ADD_MESSAGE = "구간이 등록되었습니다.\n";
     private static final String STATION_DELETE_ERROR = "노선에 등록된 지하철 역은 삭제할 수 없습니다.\n";
     private static final String STATION_DELETE_MESSAGE = "지하철 역이 삭제되었습니다.\n";
+    private static final String LINE_DELETE_MESSAGE = "지하철 노선이 삭제되었습니다.\n";
 
     public static void printStationNameLengthError() {
         System.out.println(ERROR + STATION_NAME_LENGTH_ERROR);
@@ -68,4 +69,8 @@ public static void printStationDeleteMessage() {
     public static void printName(String name) {
         System.out.println(INFO + name);
     }
+
+    public static void printLineDeleteMessage() {
+        System.out.println(INFO + LINE_DELETE_MESSAGE);
+    }
 }

From ca52458c20d24b0ff6d408fc1ccbf542e951d394 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 04:07:56 +0900
Subject: [PATCH 71/91] feat(LineService): create deleteLine Function

---
 src/main/java/subway/LineService.java | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/main/java/subway/LineService.java b/src/main/java/subway/LineService.java
index 4a0d99143..0e7c2a8b9 100644
--- a/src/main/java/subway/LineService.java
+++ b/src/main/java/subway/LineService.java
@@ -48,4 +48,12 @@ public static boolean addLine(String lineName, String firstStationName, String l
         }
         return true;
     }
+
+    public static void deleteLine(String lineName) {
+        if (!LineRepository.deleteLineByName(lineName)) {
+            OutPut.printNonExistLineError();
+            return;
+        }
+        OutPut.printLineDeleteMessage();
+    }
 }

From a488a5bf7a892f70c1bfd35d28821b51dfc83d71 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 04:16:20 +0900
Subject: [PATCH 72/91] feat(UserInterfaceView): create deleteLine Function

---
 src/main/java/subway/UserInterfaceView.java | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index a21a224a6..994e9ccc8 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -209,7 +209,7 @@ private void lineToNextFunction(String userInput) {
             return;
         }
         if (TWO_STRING.equals(userInput)) {
-
+            deleteLine();
             return;
         }
         if (THREE_STRING.equals(userInput)) {
@@ -225,4 +225,9 @@ private void addLine() {
             lineStart();
         }
     }
+
+    private void deleteLine() {
+        String lineName = getUserInput(INPUT_DELETE_LINE_NAME);
+        LineService.deleteLine(lineName);
+    }
 }

From b56b78994869a23c6e0ca5d631e93cb12c442e8e Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 04:28:11 +0900
Subject: [PATCH 73/91] feat(LineService): create print Line info Function

---
 src/main/java/subway/LineService.java | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/main/java/subway/LineService.java b/src/main/java/subway/LineService.java
index 0e7c2a8b9..dd25eb720 100644
--- a/src/main/java/subway/LineService.java
+++ b/src/main/java/subway/LineService.java
@@ -56,4 +56,10 @@ public static void deleteLine(String lineName) {
         }
         OutPut.printLineDeleteMessage();
     }
+
+    public static void print() {
+        for (Line line : LineRepository.lines()) {
+            OutPut.printName(line.getName());
+        }
+    }
 }

From 1aa4d6f100451aadb82b2662766c6191b13b43a9 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 04:42:35 +0900
Subject: [PATCH 74/91] feat(UserInterfaceView): create print Line info
 Function

---
 src/main/java/subway/UserInterfaceView.java | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 994e9ccc8..80e39cbc5 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -213,7 +213,7 @@ private void lineToNextFunction(String userInput) {
             return;
         }
         if (THREE_STRING.equals(userInput)) {
-
+            printLine();
         }
     }
 
@@ -230,4 +230,12 @@ private void deleteLine() {
         String lineName = getUserInput(INPUT_DELETE_LINE_NAME);
         LineService.deleteLine(lineName);
     }
+
+    private void printLine() {
+        System.out.println(LINE_LIST);
+        LineService.print();
+        System.out.println();
+    }
+
+
 }

From 385b4a276df44191687567a390785c8de84aa8a8 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 04:44:30 +0900
Subject: [PATCH 75/91] feat(UserInterfaceView): create print Section view
 Function

---
 src/main/java/subway/UserInterfaceView.java | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 80e39cbc5..fe8113a9b 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -123,6 +123,7 @@ private void mainToNextFunction(String userInput) {
             return;
         }
         if (THREE_STRING.equals(userInput)) {
+            sectionStart();
             return;
         }
         if (FOUR_STRING.equals(userInput)) {
@@ -237,5 +238,14 @@ private void printLine() {
         System.out.println();
     }
 
+    private void sectionStart() {
+        printSectionView();
+    }
 
+    private void printSectionView() {
+        for (String str : SECTION_INTERFACE) {
+            System.out.println(str);
+        }
+        System.out.println();
+    }
 }

From 95c7c108e471299ce0f70b932ff9ea14fd76096e Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 04:53:10 +0900
Subject: [PATCH 76/91] refactor(UserInterfaceView): sectionStart Function
 update

---
 src/main/java/subway/UserInterfaceView.java | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index fe8113a9b..831e4c10f 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -240,6 +240,14 @@ private void printLine() {
 
     private void sectionStart() {
         printSectionView();
+        String userInput;
+        while (true) {
+            userInput = getUserInput(CHOICE_FUNCTION);
+            if (Arrays.asList(SECTION_LIST).contains(userInput)) {
+                break;
+            }
+            printErrorMessage();
+        }
     }
 
     private void printSectionView() {

From 36ad66c46720fd834a6c60f427d5f602f1847f64 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 12:33:34 +0900
Subject: [PATCH 77/91] feat(UserInterfaceView): create SectionToNextFunction
 Function

---
 src/main/java/subway/UserInterfaceView.java | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 831e4c10f..7f40187dd 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -248,6 +248,7 @@ private void sectionStart() {
             }
             printErrorMessage();
         }
+        SectionToNextFunction(userInput);
     }
 
     private void printSectionView() {
@@ -256,4 +257,12 @@ private void printSectionView() {
         }
         System.out.println();
     }
+
+    private void SectionToNextFunction(String userInput) {
+        if (ONE_STRING.equals(userInput)) {
+            return;
+        }
+        if (TWO_STRING.equals(userInput)) {
+        }
+    }
 }

From a46966a434a648ee202f629e5c074427c8ac46e9 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 12:53:47 +0900
Subject: [PATCH 78/91] feat(UserInterfaceView): create getUserInputInt
 Function

---
 src/main/java/subway/UserInterfaceView.java | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index 7f40187dd..a9828cd6b 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -265,4 +265,24 @@ private void SectionToNextFunction(String userInput) {
         if (TWO_STRING.equals(userInput)) {
         }
     }
+
+    private int getUserInputInt() {
+        int userInput;
+        while (true) {
+            System.out.println(INPUT_SECTION_ORDER);
+            try {
+                userInput = Integer.parseInt(scanner.next());
+                System.out.println();
+            } catch (Exception e) {
+                System.out.println(INPUT_TYPE_ERROR);
+                continue;
+            }
+            if (userInput < ZERO) {
+                System.out.println(INPUT_NUMBER_ERROR);
+                continue;
+            }
+            break;
+        }
+        return userInput;
+    }
 }

From 7eb48bfb3f32abbe758e53dfdea29b70a5a024c3 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 15:14:42 +0900
Subject: [PATCH 79/91] feat(UserInterfaceView): create addSection Function

---
 src/main/java/subway/UserInterfaceView.java | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index a9828cd6b..f7c3114ec 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -260,6 +260,7 @@ private void printSectionView() {
 
     private void SectionToNextFunction(String userInput) {
         if (ONE_STRING.equals(userInput)) {
+            addSection();
             return;
         }
         if (TWO_STRING.equals(userInput)) {
@@ -285,4 +286,13 @@ private int getUserInputInt() {
         }
         return userInput;
     }
+
+    private void addSection() {
+        String lineName = getUserInput(INPUT_SECTION_LINE_NAME);
+        String stationName = getUserInput(INPUT_SECTION_STATION_NAME);
+        int index = getUserInputInt();
+        if (!SectionService.addSection(lineName, stationName, index, true)) {
+            sectionStart();
+        }
+    }
 }

From c745e0bb7ba5af3c849aba03a038b95c27053915 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 15:37:07 +0900
Subject: [PATCH 80/91] feat(Line): create return lineInStationList Function

---
 src/main/java/subway/domain/Line.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/main/java/subway/domain/Line.java b/src/main/java/subway/domain/Line.java
index 2746b3c9d..adf5c3edf 100644
--- a/src/main/java/subway/domain/Line.java
+++ b/src/main/java/subway/domain/Line.java
@@ -1,6 +1,7 @@
 package subway.domain;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 public class Line {
@@ -12,6 +13,10 @@ public Line(String name) {
         this.name = name;
     }
 
+    public List<Station> lineInStationList() {
+        return Collections.unmodifiableList(lineInStationList);
+    }
+
     public String getName() {
         return name;
     }

From 1390e23a162ad69e481b78656108ce0ca78ee2cb Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 16:00:16 +0900
Subject: [PATCH 81/91] feat(Line): create deleteLineByName Function

---
 src/main/java/subway/domain/Line.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/main/java/subway/domain/Line.java b/src/main/java/subway/domain/Line.java
index adf5c3edf..13e3f5d75 100644
--- a/src/main/java/subway/domain/Line.java
+++ b/src/main/java/subway/domain/Line.java
@@ -3,6 +3,7 @@
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.Objects;
 
 public class Line {
 
@@ -46,4 +47,8 @@ public void insertLineInStation(Station station, int index) {
         }
         lineInStationList.add(index, station);
     }
+
+    public boolean deleteLineByName(String name) {
+        return lineInStationList.removeIf(station -> Objects.equals(station.getName(), name));
+    }
 }

From 0a0823287f73ab010f9643be365794d58e402868 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 16:19:39 +0900
Subject: [PATCH 82/91] feat(OutPut): create SectionDeleteSizeError Function

---
 src/main/java/subway/OutPut.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index bc84a093b..3bfc2a0de 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -17,6 +17,7 @@ public class OutPut {
     private static final String STATION_DELETE_ERROR = "노선에 등록된 지하철 역은 삭제할 수 없습니다.\n";
     private static final String STATION_DELETE_MESSAGE = "지하철 역이 삭제되었습니다.\n";
     private static final String LINE_DELETE_MESSAGE = "지하철 노선이 삭제되었습니다.\n";
+    private static final String SECTION_DELETE_SIZE_ERROR = "노선에 포함된 역이 두개 이하일 때는 역을 제거할 수 없습니다.\n";
 
     public static void printStationNameLengthError() {
         System.out.println(ERROR + STATION_NAME_LENGTH_ERROR);
@@ -73,4 +74,8 @@ public static void printName(String name) {
     public static void printLineDeleteMessage() {
         System.out.println(INFO + LINE_DELETE_MESSAGE);
     }
+
+    public static void printSectionDeleteSizeError() {
+        System.out.println(ERROR + SECTION_DELETE_SIZE_ERROR);
+    }
 }

From e34d72ac7f41254df4d60a114dd2ce39688e0b42 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 16:25:22 +0900
Subject: [PATCH 83/91] feat(OutPut): create SectionDeleteMessage Function

---
 src/main/java/subway/OutPut.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index 3bfc2a0de..22289fdd4 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -18,6 +18,7 @@ public class OutPut {
     private static final String STATION_DELETE_MESSAGE = "지하철 역이 삭제되었습니다.\n";
     private static final String LINE_DELETE_MESSAGE = "지하철 노선이 삭제되었습니다.\n";
     private static final String SECTION_DELETE_SIZE_ERROR = "노선에 포함된 역이 두개 이하일 때는 역을 제거할 수 없습니다.\n";
+    private static final String SECTION_DELETE_MESSAGE = "구간이 삭제되었습니다.\n";
 
     public static void printStationNameLengthError() {
         System.out.println(ERROR + STATION_NAME_LENGTH_ERROR);
@@ -78,4 +79,8 @@ public static void printLineDeleteMessage() {
     public static void printSectionDeleteSizeError() {
         System.out.println(ERROR + SECTION_DELETE_SIZE_ERROR);
     }
+
+    public static void printSectionDeleteMessage() {
+        System.out.println(INFO + SECTION_DELETE_MESSAGE);
+    }
 }

From 0f29719ff7b88e62602d62d703f50ecd9e97b4ce Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 21:28:35 +0900
Subject: [PATCH 84/91] feat(SectionService): create isNotDeleteSize Function

Function to check if the size of a line that can be deleted
---
 src/main/java/subway/SectionService.java | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/main/java/subway/SectionService.java b/src/main/java/subway/SectionService.java
index bdf96f0ad..1e0842c91 100644
--- a/src/main/java/subway/SectionService.java
+++ b/src/main/java/subway/SectionService.java
@@ -46,4 +46,11 @@ public static boolean addSection(String lineName, String stationName, int statio
         return true;
     }
 
+    private static boolean isNotDeleteSize(Line line) {
+        if (line.lineInStationList().size() <= DELETE_MIN_SIZE) {
+            OutPut.printSectionDeleteSizeError();
+            return true;
+        }
+        return false;
+    }
 }

From 29c2a32fb66f15909e280c805901e36faff86069 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 21:34:04 +0900
Subject: [PATCH 85/91] docs(readme): update readme

---
 README.md | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 05859e34c..e01a2f293 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 # 지하철 노선도 미션 - 김유기
 - 지하철 역과 노선을 관리하는 지하철 노선도 기능을 구현한다.
 
+
+
 ## 기능 목록
 
 * 초기 역, 노선 설정해야 한다.
@@ -9,20 +11,25 @@
   * 지하철 역의 이름은 중복이 불가능 해야 한다.
 * 지하철 역은 삭제가 가능하다.
   * 노선에 등록된 지하철 역은 삭제가 불가능 해야 한다.
+  * 존재하지 않는 역은 삭제가 불가능 하다.
 * 지하철 역의 목록 조회가 가능해야 한다.
 * 지하철 노선은 등록이 가능하다.
   * 지하철 노선의 이름은 2글자 이상이여야 한다.
   * 지하철 노선의 이름은 중복이 불가능 해야 한다.
+  * 상행역과 하행역이 존재하지 않는경우 에러를 출력한다.
 * 지하철 노선은 삭제가 가능하다.
 * 지하철 노선을 등록할때 상행종점역과 하행 종점역을 입력받는다.
 * 지하철 노선의 목록을 조회할 수 있다.
 * 지하철 노선에 구간을 추가 할 수 있다.
   * 하나의 역은 여러개의 노선에 추가 될 수 있다.
   * 역과 역사이에 새로운 역이 추가 될 수 있다.
-  * 노선에서 갈래길은 생길 수 없다. ? 이해불가
+  * 없는 역이 추가될때 에러를 출력한다.
+  * 음수입력시 에러를 출력한다.
+  * 구간의 길이보다 큰 값이 들어오면 마지막으로 추가한다.
+  * 이미 존재하는 역이 들어오면 에러를 출력한다.
 * 지하철 노선에 구간을 삭제 할 수 있다.
-  * 종점을 제거할 경우 다음 역이 종점이 된다.
   * 노선에 포함된 역이 두개 이하일 때는 역을 제거할 수 없다.
+  * 노선에 없는 역을 삭제할때 에러를 출력한다.
 * 지하철 노선에 등록된 역은 조회가 가능하다.
   * 상행종점부터 하행 종점까지 연결된 순서대로 역 목록을 조회할 수 있다.
 * 에러 발생시 `[ERROR]` 을 붙여서 출력한다.

From 8e2a83fdad2da3f2ca84da06f8584953d4c51eab Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 21:59:46 +0900
Subject: [PATCH 86/91] feat(SectionService): create deleteSection Function

---
 src/main/java/subway/SectionService.java | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/main/java/subway/SectionService.java b/src/main/java/subway/SectionService.java
index 1e0842c91..7522451d3 100644
--- a/src/main/java/subway/SectionService.java
+++ b/src/main/java/subway/SectionService.java
@@ -53,4 +53,20 @@ private static boolean isNotDeleteSize(Line line) {
         }
         return false;
     }
+
+    public static boolean deleteSection(String lineName, String stationName) {
+        if (isNotExistLineAndStation(lineName, stationName)) {
+            return false;
+        }
+        Line line = LineRepository.getLine(lineName);
+        if (isNotDeleteSize(line)) {
+            return false;
+        }
+        if (!line.deleteLineByName(stationName)) {
+            OutPut.printNonExistStationError(stationName);
+            return false;
+        }
+        OutPut.printSectionDeleteMessage();
+        return true;
+    }
 }

From 98891505fd91d6d42ccba7f8b97a77ebb09a70a7 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 22:08:23 +0900
Subject: [PATCH 87/91] feat(UserInterfaceView): create deleteSection Function

---
 src/main/java/subway/UserInterfaceView.java | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index f7c3114ec..d552baedf 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -264,6 +264,7 @@ private void SectionToNextFunction(String userInput) {
             return;
         }
         if (TWO_STRING.equals(userInput)) {
+            deleteSection();
         }
     }
 
@@ -295,4 +296,12 @@ private void addSection() {
             sectionStart();
         }
     }
+
+    private void deleteSection() {
+        String lineName = getUserInput(INPUT_SECTION_DELETE_LINE_NAME);
+        String stationName = getUserInput(INPUT_SECTION_DELETE_STATION_NAME);
+        if (!SectionService.deleteSection(lineName, stationName)) {
+            sectionStart();
+        }
+    }
 }

From 8888537d557a09755d38f90998dd81b38033bfef Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 22:14:17 +0900
Subject: [PATCH 88/91] feat(OutPut): create printLine Function

---
 src/main/java/subway/OutPut.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/subway/OutPut.java b/src/main/java/subway/OutPut.java
index 22289fdd4..d53acada5 100644
--- a/src/main/java/subway/OutPut.java
+++ b/src/main/java/subway/OutPut.java
@@ -83,4 +83,8 @@ public static void printSectionDeleteSizeError() {
     public static void printSectionDeleteMessage() {
         System.out.println(INFO + SECTION_DELETE_MESSAGE);
     }
+
+    public static void printNextLine() {
+        System.out.println();
+    }
 }

From 38264ca43764d696b12adb34b6428620905430e1 Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 22:27:08 +0900
Subject: [PATCH 89/91] feat(SectionService): create print Subway Info Function

---
 src/main/java/subway/SectionService.java | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/main/java/subway/SectionService.java b/src/main/java/subway/SectionService.java
index 7522451d3..34cec8242 100644
--- a/src/main/java/subway/SectionService.java
+++ b/src/main/java/subway/SectionService.java
@@ -8,6 +8,7 @@
 public class SectionService {
 
     private static final int DELETE_MIN_SIZE = 2;
+    private static final String THREE_MINUS = "---";
 
     private static boolean isNotExistLineAndStation(String lineName, String stationName) {
         if (!LineRepository.isEqualLineName(lineName)) {
@@ -69,4 +70,15 @@ public static boolean deleteSection(String lineName, String stationName) {
         OutPut.printSectionDeleteMessage();
         return true;
     }
+
+    public static void print() {
+        for (Line line : LineRepository.lines()) {
+            OutPut.printName(line.getName());
+            OutPut.printName(THREE_MINUS);
+            for (Station station : line.lineInStationList()) {
+                OutPut.printName(station.getName());
+            }
+            OutPut.printNextLine();
+        }
+    }
 }

From 603f3d66799022fa1512fb55c704484fdcab5f6b Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 22:45:05 +0900
Subject: [PATCH 90/91] feat(UserInterfaceView): create print Subway Info
 Function

---
 src/main/java/subway/UserInterfaceView.java | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/main/java/subway/UserInterfaceView.java b/src/main/java/subway/UserInterfaceView.java
index d552baedf..30a7a24bd 100644
--- a/src/main/java/subway/UserInterfaceView.java
+++ b/src/main/java/subway/UserInterfaceView.java
@@ -127,6 +127,7 @@ private void mainToNextFunction(String userInput) {
             return;
         }
         if (FOUR_STRING.equals(userInput)) {
+            printSubwayLine();
         }
     }
 
@@ -304,4 +305,10 @@ private void deleteSection() {
             sectionStart();
         }
     }
+
+    private void printSubwayLine() {
+        System.out.println(SUBWAY_LINES_LIST);
+        SectionService.print();
+        System.out.println();
+    }
 }

From b61717855206708d1e9555c70c356db8467df6ae Mon Sep 17 00:00:00 2001
From: mungto <daum7766@naver.com>
Date: Tue, 15 Dec 2020 22:58:02 +0900
Subject: [PATCH 91/91] refactor(StationService): Separating functions to check
 conditions

addStation function Separating
---
 src/main/java/subway/StationService.java | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/main/java/subway/StationService.java b/src/main/java/subway/StationService.java
index 04a17c6df..4ddf6c23e 100644
--- a/src/main/java/subway/StationService.java
+++ b/src/main/java/subway/StationService.java
@@ -7,14 +7,20 @@ public class StationService {
 
     public static final int MIN_STATION_NAME_LENGTH = 2;
 
-    public static boolean addStation(String name, boolean isPrint) {
-        // TODO - 조건검사 함수 분리하기
+    public static boolean isNotStationState(String name) {
         if (name.length() < MIN_STATION_NAME_LENGTH) {
             OutPut.printStationNameLengthError();
-            return false;
+            return true;
         }
         if (StationRepository.isEqualStationName(name)) {
             OutPut.printStationNameDuplicateError();
+            return true;
+        }
+        return false;
+    }
+
+    public static boolean addStation(String name, boolean isPrint) {
+        if (isNotStationState(name)) {
             return false;
         }
         StationRepository.addStation(new Station(name));