diff --git a/index.html b/index.html
index 613d55c..fff985f 100644
--- a/index.html
+++ b/index.html
@@ -17,8 +17,6 @@ <h3>Local Stream</h3>
         <h3>Remote Stream</h3>
         <video id="remoteVideo" autoplay playsinline></video>
       </span>
-
-
     </div>
 
     <button id="webcamButton">Start webcam</button>
@@ -27,8 +25,9 @@ <h2>2. Create a new Call</h2>
 
     <h2>3. Join a Call</h2>
     <p>Answer the call from a different browser window or device</p>
-    
-    <input id="callInput" />
+
+    <!-- <input id="callInput" /> -->
+    <input id="databaseID" />
     <button id="answerButton" disabled>Answer</button>
 
     <h2>4. Hangup</h2>
@@ -36,6 +35,5 @@ <h2>4. Hangup</h2>
     <button id="hangupButton" disabled>Hangup</button>
 
     <script type="module" src="/main.js"></script>
-
   </body>
 </html>
diff --git a/main.js b/main.js
index cc4c066..3b1c132 100644
--- a/main.js
+++ b/main.js
@@ -2,15 +2,24 @@ import './style.css';
 
 import firebase from 'firebase/app';
 import 'firebase/firestore';
+import 'firebase/database';
 
 const firebaseConfig = {
-  // your config
+  apiKey: "AIzaSyAMlK4Jz60lEYnZvcFzGo-JqOPQ-Q2oXP0",
+  authDomain: "web-rtc-b2af7.firebaseapp.com",
+  databaseURL: "https://web-rtc-b2af7-default-rtdb.europe-west1.firebasedatabase.app",
+  projectId: "web-rtc-b2af7",
+  storageBucket: "web-rtc-b2af7.appspot.com",
+  messagingSenderId: "593149952785",
+  appId: "1:593149952785:web:1867797b5db06dac09c2b0"
 };
 
 if (!firebase.apps.length) {
   firebase.initializeApp(firebaseConfig);
 }
 const firestore = firebase.firestore();
+const database = firebase.database();
+
 
 const servers = {
   iceServers: [
@@ -35,6 +44,8 @@ const answerButton = document.getElementById('answerButton');
 const remoteVideo = document.getElementById('remoteVideo');
 const hangupButton = document.getElementById('hangupButton');
 
+//
+const databaseID = document.getElementById('databaseID')
 // 1. Setup media sources
 
 webcamButton.onclick = async () => {
@@ -64,15 +75,25 @@ webcamButton.onclick = async () => {
 // 2. Create an offer
 callButton.onclick = async () => {
   // Reference Firestore collections for signaling
-  const callDoc = firestore.collection('calls').doc();
-  const offerCandidates = callDoc.collection('offerCandidates');
-  const answerCandidates = callDoc.collection('answerCandidates');
+  // const callDoc = firestore.collection('calls').doc();
+  // const offerCandidates = callDoc.collection('offerCandidates');
+  // const answerCandidates = callDoc.collection('answerCandidates');
+
+  // database test below
+  const callRef = database.ref('calls').push()
+  const offerCandidates2 = callRef.child('offerCandidates')
+  const answerCandidates2 = callRef.child('answerCandidates')
+
+  database.ref("calls").on("child_added", (snapshot) => {
+    databaseID.value = snapshot.key
+  })
 
-  callInput.value = callDoc.id;
+  // callInput.value = callDoc.id;// add value from snapshot here
 
   // Get candidates for caller, save to db
   pc.onicecandidate = (event) => {
-    event.candidate && offerCandidates.add(event.candidate.toJSON());
+    // event.candidate && offerCandidates.add(event.candidate.toJSON());
+    event.candidate && offerCandidates2.push(event.candidate.toJSON()) // database
   };
 
   // Create offer
@@ -84,42 +105,70 @@ callButton.onclick = async () => {
     type: offerDescription.type,
   };
 
-  await callDoc.set({ offer });
+  // await callDoc.set({ offer });
+  await callRef.child('protocols').set({ offer }); // setting in database
 
   // Listen for remote answer
-  callDoc.onSnapshot((snapshot) => {
-    const data = snapshot.data();
-    if (!pc.currentRemoteDescription && data?.answer) {
-      const answerDescription = new RTCSessionDescription(data.answer);
+  // callDoc.onSnapshot((snapshot) => {
+  //   const data = snapshot.data();
+  //   if (!pc.currentRemoteDescription && data?.answer) {
+  //     const answerDescription = new RTCSessionDescription(data.answer);
+  //     pc.setRemoteDescription(answerDescription);
+  //   }
+  // });
+
+  // database implemented
+  callRef.child('protocols').on('child_added', (snapshot) => {
+    const snapData = snapshot.val()
+    if (!pc.currentRemoteDescription && snapData.type === 'answer') {
+      const answerDescription = new RTCSessionDescription(snapData);
       pc.setRemoteDescription(answerDescription);
     }
   });
 
   // When answered, add candidate to peer connection
-  answerCandidates.onSnapshot((snapshot) => {
-    snapshot.docChanges().forEach((change) => {
-      if (change.type === 'added') {
-        const candidate = new RTCIceCandidate(change.doc.data());
-        pc.addIceCandidate(candidate);
-      }
-    });
-  });
+  // answerCandidates.onSnapshot((snapshot) => {
+  //   snapshot.docChanges().forEach((change) => {
+  //     if (change.type === 'added') {
+  //       console.log(change.doc.data());
+  //       const candidate = new RTCIceCandidate(change.doc.data());
+  //       pc.addIceCandidate(candidate);
+  //     }
+  //   });
+  // });
+
+  // database implemented
+  answerCandidates2.on('child_added', (snapshot) => {
+    const candidate = new RTCIceCandidate(snapshot.val());
+    pc.addIceCandidate(candidate);
+  })
 
   hangupButton.disabled = false;
 };
 
 // 3. Answer the call with the unique ID
 answerButton.onclick = async () => {
-  const callId = callInput.value;
-  const callDoc = firestore.collection('calls').doc(callId);
-  const answerCandidates = callDoc.collection('answerCandidates');
-  const offerCandidates = callDoc.collection('offerCandidates');
+  // const callId = callInput.value;
+  // const callDoc = firestore.collection('calls').doc(callId);
+  // const answerCandidates = callDoc.collection('answerCandidates');
+  // const offerCandidates = callDoc.collection('offerCandidates');
+
+  // database variables below
+  const callIdDatabase = databaseID.value
+  const callRef = database.ref('calls').child(callIdDatabase);
+  const answerCandidates2 = callRef.child('answerCandidates');
+  const offerCandidates2 = callRef.child('offerCandidates');
+  // end database variables
 
   pc.onicecandidate = (event) => {
-    event.candidate && answerCandidates.add(event.candidate.toJSON());
+    // event.candidate && answerCandidates.add(event.candidate.toJSON());
+    event.candidate && answerCandidates2.push(event.candidate.toJSON());
   };
 
-  const callData = (await callDoc.get()).data();
+  // const callData = (await callDoc.get()).data();
+
+  // database
+  const callData = (await callRef.child('protocols').get()).val();
 
   const offerDescription = callData.offer;
   await pc.setRemoteDescription(new RTCSessionDescription(offerDescription));
@@ -132,15 +181,24 @@ answerButton.onclick = async () => {
     sdp: answerDescription.sdp,
   };
 
-  await callDoc.update({ answer });
+  // await callDoc.update({ answer });
+  await callRef.child('protocols').update({ answer }); // setting in database
+
+  // offerCandidates.onSnapshot((snapshot) => {
+  //   snapshot.docChanges().forEach((change) => {
+  //     console.log(change);
+  //     if (change.type === 'added') {
+  //       let data = change.doc.data();
+  //       // console.log(data)
+  //       pc.addIceCandidate(new RTCIceCandidate(data));
+  //     }
+  //   });
+  // });
+
+  offerCandidates2.on('child_added', (snapshot) => {
+    pc.addIceCandidate(new RTCIceCandidate(snapshot.val()));
+    console.log("ICE candidate added")
+  })
+
 
-  offerCandidates.onSnapshot((snapshot) => {
-    snapshot.docChanges().forEach((change) => {
-      console.log(change);
-      if (change.type === 'added') {
-        let data = change.doc.data();
-        pc.addIceCandidate(new RTCIceCandidate(data));
-      }
-    });
-  });
 };
diff --git a/package-lock.json b/package-lock.json
index 4b6f3ab..3a51553 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,8 +1,892 @@
 {
   "name": "webrtc-demo",
   "version": "0.0.0",
-  "lockfileVersion": 1,
+  "lockfileVersion": 2,
   "requires": true,
+  "packages": {
+    "": {
+      "name": "webrtc-demo",
+      "version": "0.0.0",
+      "dependencies": {
+        "firebase": "^8.2.10"
+      },
+      "devDependencies": {
+        "vite": "^2.0.5"
+      }
+    },
+    "node_modules/@firebase/analytics": {
+      "version": "0.6.4",
+      "resolved": "https://registry.npmjs.org/@firebase/analytics/-/analytics-0.6.4.tgz",
+      "integrity": "sha512-Lhnk5pXeDKoPf1b2cggWQaqCtNq+jn6IkhHMIo+7VztVt3i8ovnGuhAn/0hLC+XxvVWJ9q6CXIoGStkwvecDoA==",
+      "dependencies": {
+        "@firebase/analytics-types": "0.4.0",
+        "@firebase/component": "0.2.0",
+        "@firebase/installations": "0.4.20",
+        "@firebase/logger": "0.2.6",
+        "@firebase/util": "0.3.4",
+        "tslib": "^1.11.1"
+      }
+    },
+    "node_modules/@firebase/analytics-types": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/@firebase/analytics-types/-/analytics-types-0.4.0.tgz",
+      "integrity": "sha512-Jj2xW+8+8XPfWGkv9HPv/uR+Qrmq37NPYT352wf7MvE9LrstpLVmFg3LqG6MCRr5miLAom5sen2gZ+iOhVDeRA=="
+    },
+    "node_modules/@firebase/app": {
+      "version": "0.6.15",
+      "resolved": "https://registry.npmjs.org/@firebase/app/-/app-0.6.15.tgz",
+      "integrity": "sha512-VfULP09cci4xk+iAU6CB2CUNU/vbpAOoUleDdspXFphV9Yw36anb8RjaHGcN1DRR7LNb7vznNJXHk8FJhC8VWQ==",
+      "dependencies": {
+        "@firebase/app-types": "0.6.1",
+        "@firebase/component": "0.2.0",
+        "@firebase/logger": "0.2.6",
+        "@firebase/util": "0.3.4",
+        "dom-storage": "2.1.0",
+        "tslib": "^1.11.1",
+        "xmlhttprequest": "1.8.0"
+      }
+    },
+    "node_modules/@firebase/app-types": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/@firebase/app-types/-/app-types-0.6.1.tgz",
+      "integrity": "sha512-L/ZnJRAq7F++utfuoTKX4CLBG5YR7tFO3PLzG1/oXXKEezJ0kRL3CMRoueBEmTCzVb/6SIs2Qlaw++uDgi5Xyg=="
+    },
+    "node_modules/@firebase/auth": {
+      "version": "0.16.4",
+      "resolved": "https://registry.npmjs.org/@firebase/auth/-/auth-0.16.4.tgz",
+      "integrity": "sha512-zgHPK6/uL6+nAyG9zqammHTF1MQpAN7z/jVRLYkDZS4l81H08b2SzApLbRfW/fmy665xqb5MK7sVH0V1wsiCNw==",
+      "dependencies": {
+        "@firebase/auth-types": "0.10.2"
+      }
+    },
+    "node_modules/@firebase/auth-interop-types": {
+      "version": "0.1.5",
+      "resolved": "https://registry.npmjs.org/@firebase/auth-interop-types/-/auth-interop-types-0.1.5.tgz",
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+    },
+    "node_modules/@firebase/auth-types": {
+      "version": "0.10.2",
+      "resolved": "https://registry.npmjs.org/@firebase/auth-types/-/auth-types-0.10.2.tgz",
+      "integrity": "sha512-0GMWVWh5TBCYIQfVerxzDsuvhoFpK0++O9LtP3FWkwYo7EAxp6w0cftAg/8ntU1E5Wg56Ry0b6ti/YGP6g0jlg=="
+    },
+    "node_modules/@firebase/component": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/@firebase/component/-/component-0.2.0.tgz",
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+      "dependencies": {
+        "@firebase/util": "0.3.4",
+        "tslib": "^1.11.1"
+      }
+    },
+    "node_modules/@firebase/database": {
+      "version": "0.9.4",
+      "resolved": "https://registry.npmjs.org/@firebase/database/-/database-0.9.4.tgz",
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+      "dependencies": {
+        "@firebase/auth-interop-types": "0.1.5",
+        "@firebase/component": "0.2.0",
+        "@firebase/database-types": "0.7.0",
+        "@firebase/logger": "0.2.6",
+        "@firebase/util": "0.3.4",
+        "faye-websocket": "0.11.3",
+        "tslib": "^1.11.1"
+      }
+    },
+    "node_modules/@firebase/database-types": {
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/@firebase/database-types/-/database-types-0.7.0.tgz",
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+      "dependencies": {
+        "@firebase/app-types": "0.6.1"
+      }
+    },
+    "node_modules/@firebase/firestore": {
+      "version": "2.1.7",
+      "resolved": "https://registry.npmjs.org/@firebase/firestore/-/firestore-2.1.7.tgz",
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+        "@firebase/firestore-types": "2.1.0",
+        "@firebase/logger": "0.2.6",
+        "@firebase/util": "0.3.4",
+        "@firebase/webchannel-wrapper": "0.4.1",
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+        "@grpc/proto-loader": "^0.5.0",
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+      "engines": {
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+      }
+    },
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+      "version": "2.1.0",
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+    },
+    "node_modules/@firebase/functions": {
+      "version": "0.6.2",
+      "resolved": "https://registry.npmjs.org/@firebase/functions/-/functions-0.6.2.tgz",
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+      "dependencies": {
+        "@firebase/component": "0.2.0",
+        "@firebase/functions-types": "0.4.0",
+        "@firebase/messaging-types": "0.5.0",
+        "node-fetch": "2.6.1",
+        "tslib": "^1.11.1"
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+    "node_modules/@firebase/functions-types": {
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+      "resolved": "https://registry.npmjs.org/@firebase/installations/-/installations-0.4.20.tgz",
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+        "@firebase/installations-types": "0.3.4",
+        "@firebase/util": "0.3.4",
+        "idb": "3.0.2",
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+      "version": "0.2.6",
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+      "integrity": "sha512-xIZ1vHnOcHAaj+H/gS8tu3QolR9up+fyTfgVLEFbZRsbAiLuIvuaoJwTHLAUTs/nJF6GtEGscRD4Jx/aFmEJRw==",
+      "dependencies": {
+        "@firebase/component": "0.2.0",
+        "@firebase/installations": "0.4.20",
+        "@firebase/messaging-types": "0.5.0",
+        "@firebase/util": "0.3.4",
+        "idb": "3.0.2",
+        "tslib": "^1.11.1"
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+    },
+    "node_modules/@firebase/messaging-types": {
+      "version": "0.5.0",
+      "resolved": "https://registry.npmjs.org/@firebase/messaging-types/-/messaging-types-0.5.0.tgz",
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+        "@firebase/component": "0.2.0",
+        "@firebase/installations": "0.4.20",
+        "@firebase/logger": "0.2.6",
+        "@firebase/performance-types": "0.0.13",
+        "@firebase/util": "0.3.4",
+        "tslib": "^1.11.1"
+      }
+    },
+    "node_modules/@firebase/performance-types": {
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+      "version": "0.3.36",
+      "resolved": "https://registry.npmjs.org/@firebase/polyfill/-/polyfill-0.3.36.tgz",
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+        "promise-polyfill": "8.1.3",
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+      "dependencies": {
+        "@firebase/component": "0.2.0",
+        "@firebase/storage-types": "0.3.13",
+        "@firebase/util": "0.3.4",
+        "tslib": "^1.11.1"
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+    "node_modules/@firebase/storage-types": {
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