adding query,facts,video functions

functions/index.js

@@ -143,3 +143,62 @@ app.post('/', isAuthenticated ,function(req,response)
 });
 
 exports.signUp = functions.https.onRequest(app);
+
+
+
+//<--------Random Fact Generation---------->
+//Generates random fact about techspardha.
+exports.randomFact = functions.https.onRequest((request , response) => {
+    const numberOfLines = 8;
+    const randomIndex = Math.floor(Math.random() * numberOfLines);
+    database.ref('/facts/' + randomIndex).on('value',function(snapshot){
+      console.log(snapshot.val());
+      response.set('Cache-Control', 'public, max-age=300 , s-maxage=600');
+      response.status(401).json({
+        message : snapshot.val()
+      });
+    });
+  });
+
+
+  //<------Returning the array of all the videos------>
+  //Returns the array of videos containing title and url of a video.
+  exports.getVideo = functions.https.onRequest((request , response) => {
+    let items = [];
+    database.ref('/videos').on('value', function(snapshot) {
+      snapshot.forEach(function(childSnapshot) {
+        items.push(childSnapshot.key,{
+          title : childSnapshot.val().title,
+          url : childSnapshot.val().url
+        });
+      });
+    });
+    response.set('Cache-Control', 'public, max-age=300 , s-maxage=600');
+    response.status(401).json(items);
+  }); 
+
+
+
+  // <-----Adding query to database------->
+  // only add newly asked query to the database, if query will be null then it will return the empty query message else query will be added to database. 
+  exports.addQuery = functions.https.onRequest((request,response)=>{
+    const query = request.query.text;
+    const email1=req.body.email1;
+    const email=email1.replace(/\./g, ',');
+    const email_child='queries/'+email;
+    if(query!==null)
+    {
+      database.ref().child(email_child).push(query);
+      response.set('Cache-Control', 'public, max-age=300 , s-maxage=600');
+      response.status(401).json({
+        message : "query successfully added"
+      });
+    }
+    else
+    {
+      response.status(500).json({
+        message: "empty query"
+      })
+    }
+  });
+