iTechArt-RubyLab · PivovarAndrew · Feb 6, 2022 · Feb 6, 2022 · Feb 7, 2022 · Feb 7, 2022
diff --git a/app/mailers/application_mailer.rb b/app/mailers/application_mailer.rb
@@ -1,4 +1,7 @@
+# frozen_string_literal: true
+
+# Base mailer class
 class ApplicationMailer < ActionMailer::Base
-  default from: 'from@example.com'
+  default from: 'SocialNetwork <socialnetworkteam.contact@gmail.com>'
   layout 'mailer'
 end
diff --git a/app/mailers/user_report_mailer.rb b/app/mailers/user_report_mailer.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+require Rails.root.join('app', 'services', 'weekly_report_service.rb')
+
+# User report mailer class
+class UserReportMailer < ApplicationMailer
+  def weekly_report_mailer
+    @user = User.find(params[:user_id])
+    @weekly_report = WeeklyReportService.new(@user).weekly_report
+    mail(to: @user.email, subject: 'Weekly report!')
+  end
+end
diff --git a/app/services/weekly_report_service.rb b/app/services/weekly_report_service.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: True
+
+# Service responsible for compiling a weekly user report
+class WeeklyReportService
+  WEEK_AGO = 1.week.ago.utc
+
+  def initialize(user)
+    @user = user
+  end
+
+  def weekly_report
+    { subscriptions: weekly_subscriptions, subscribers: weekly_subscribers }
+  end
+
+  private
+
+  def weekly_subscriptions
+    @user.subscriptions.where('user_subscriptions.created_at >= ?', WEEK_AGO).order('created_at DESC')
+  end
+
+  def weekly_subscribers
+    @user.subscribers.where('user_subscriptions.created_at >= ?', WEEK_AGO).order('created_at DESC')
+  end
+end
diff --git a/app/views/user_report_mailer/_users.html.erb b/app/views/user_report_mailer/_users.html.erb
@@ -0,0 +1,4 @@
+<% users.each_with_index do |user, counter| %>
+  <%= "#{counter + 1} #{user.profile.surname} #{user.profile.name}" %>
+  <br/>
+<% end %>
diff --git a/app/views/user_report_mailer/weekly_report_mailer.html.erb b/app/views/user_report_mailer/weekly_report_mailer.html.erb
@@ -0,0 +1,20 @@
+<html>
+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+    <%= csrf_meta_tags %>
+    <style>
+      body {
+        font-family: "Open Sans";
+        margin-left: 25px;
+      }
+    </style>
+  </head>
+  <body>
+    <h2>Hi, <%= @user.profile.name %></h2>
+    <h1>Your weekly report is here! 🙈 Check it out! 🙄</h1>
+    <h3>New subscriptions:</h3>
+    <%= render partial: "users", locals: { users: @weekly_report[:subscriptions]} %>
+    <h3>New subscribers:</h3>
+    <%= render partial: "users", locals: { users: @weekly_report[:subscribers]} %>
+   </body>
+</html>
diff --git a/app/views/user_report_mailer/weekly_report_mailer.text.erb b/app/views/user_report_mailer/weekly_report_mailer.text.erb
@@ -0,0 +1,15 @@
+Hi, <%= @user.profile.name %>
+Your weekly report is here! 🙈 Check it out! 🙄
+===============================================
+
+New subscriptions:
+<% @weekly_report[:subscriptions].each_with_index do |user, counter| %>
+  <%= "#{counter + 1} #{user.profile.surname} #{user.profile.name}" %>
+<% end %>
+
+New subscribers:
+<% @weekly_report[:subscribers].each_with_index do |user, counter| %>
+  <%= "#{counter + 1} #{user.profile.surname} #{user.profile.name}" %>
+<% end %>
+
+===============================================
diff --git a/spec/mailers/previews/user_report_mailer_preview.rb b/spec/mailers/previews/user_report_mailer_preview.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+# Preview all emails at http://localhost:3000/rails/mailers/user_report_mailer
+class UserReportMailerPreview < ActionMailer::Preview
+  def weekly_report_mailer
+    UserReportMailer.with(user_id: 340).weekly_report_mailer
+  end
+end