Add files via upload

api/controllers/chats.js

@@ -0,0 +1,45 @@
+const chats = require("../models/chat");
+const _ = require('lodash');
+
+module.exports.saveMessage = async (req, res) => {
+    try{
+        const {senderId, receiverId, message} = req.body;
+
+        if(!senderId)    return res.type('json').status(400).send("Sender id was not provided.");
+        if(!receiverId)  return res.type('json').status(400).send("Receiver id was not provided.");
+        if(!message)     return res.type('json').status(400).send("Message was not provided");
+
+        const newChat = new chats({ 
+            senderId:senderId,
+            receiverId:receiverId,
+            message:message
+        });
+
+        await newChat.save();
+
+        return res.type('json').status(201).send(newChat);
+
+    }catch(err) {
+        return res.type('json').status(500).send(err.toString());   
+    }
+};
+
+module.exports.retrieveMessages = async (req, res) => {
+    try{
+        const {senderId, receiverId} = req.body;
+        
+        if(!senderId)   return res.type('json').status(400).send("Sender id was not provided.");
+        if(!receiverId) return res.type('json').status(400).send("Receiver id was not provided.");
+
+        const messages = [];
+        const cursor = chats.find({$or : [{$and:[{senderId:senderId}, {receiverId:receiverId}]}, {$and:[{senderId:receiverId}, {receiverId:senderId}]}]}).sort("timestamp").cursor();
+        for (let message = await cursor.next(); message != null; message = await cursor.next()) {
+            messages.push({senderId:message.senderId, receiverId:message.receiverId, message:message.message});
+        }
+
+        return res.type('json').status(200).send(messages);
+
+    }catch(err) {
+        return res.type('json').status(500).send(err.toString());   
+    }
+}