Fix dailyAverages query on session update & test

- Add dailyAverages seeds
- Start implementing testing

services/sessions/sessionsModel.js

@@ -12,7 +12,7 @@ async function addSession(session) {
 		.insert(session);
 
 	const newSession = await findSessionById(id)
-	computeSession(newSession);
+	addDailyAverage(newSession);
 	return newSession;
 }
 
@@ -33,7 +33,7 @@ async function updateSession(id, changes) {
 		.where({ id })
 		.update(changes, '*');
 	const updatedSession = await findSessionById(id);
-	computeSession(updatedSession);
+	updateDailyAverage(id, updatedSession);
 	return updatedSession;
 }
 
@@ -43,7 +43,8 @@ async function removeSession(id) {
 		.del();
 }
 
-async function computeSession(session) {
+//TODO: Refactor code
+async function addDailyAverage(session) {
 	if ( session.bed_tiredness && session.day_mood && session.wake_mood) {
 		// Calculate the sleep duration
 		let date1 = new Date(session.bed_time);
@@ -65,4 +66,29 @@ async function computeSession(session) {
 		})
 		.catch(err => console.log(err));
 	}
+}
+
+async function updateDailyAverage(id, session) {
+	if ( session.bed_tiredness && session.day_mood && session.wake_mood) {
+		// Calculate the sleep duration
+		let date1 = new Date(session.bed_time);
+		let date2 = new Date(session.wake_time);
+		let diffTime = Math.abs(date1.getTime() - date2.getTime());
+		diffTime = diffTime/(1000*60*60);
+		let sleep_duration = Math.round( diffTime * 100) / 100;
+	
+		// Calculate the average mood
+		let average_mood = (session.bed_tiredness + session.wake_mood + session.day_mood) / 3;
+		let new_average_mood = Math.round( average_mood * 100) / 100;
+	
+		await db('dailyAverages')
+		.where({ session_id: id })
+		.update({
+			session_id: session.id,
+			user_id: session.user_id,
+			sleep_duration: sleep_duration,
+			average_mood: new_average_mood,
+		}, '*')
+		.catch(err => console.log(err));
+	}
 }

services/sessions/sessionsRouter.js

@@ -2,6 +2,7 @@ const router = require('express').Router();
 
 const Sessions = require('../sessions/sessionsModel');
 
+// TODO: add validation
 router.post('/sessions', (req, res) => {
    Sessions.addSession(req.body)
          .then(response => {