enterfront

server/routers/epja-2024-1/enterfront/chat/index.js

@@ -0,0 +1,91 @@
+const chatRouter = require('express').Router();
+
+module.exports = chatRouter;
+
+const { getChatFromDB, getUsersChats, addChatToDB, getUserFromDB,
+    addMessageToChat} = require('../db');
+
+chatRouter.get('/item/:id1/:id2', (req, res) => {
+    const { id1, id2 } = req.params;
+    console.log("Request get in /chat:", id1, id2);
+
+    if (id1 === id2) {
+        res.status(400).send({message: 'Ids should be different'});
+        return;
+    }
+
+    const chat = getChatFromDB(id1, id2);
+
+    if (chat) {
+        res.status(200).send({chat});
+    } else {
+        res.status(404).send({message: 'Chat was not found'});
+    }
+})
+
+chatRouter.post('/item/:id1/:id2', (req, res) => {
+    const { id1, id2 } = req.params;
+    console.log("Request post in /chat:", id1, id2);
+
+    if (id1 === id2) {
+        res.status(400).send({message: 'Ids should be different'});
+        return;
+    }
+
+    const chat = getChatFromDB(id1, id2);
+
+    if (chat) {
+        // Chat already exists
+        res.status(200).send({chat});
+    } else {
+        if (!getUserFromDB(id1) || !getUserFromDB(id2)) {
+            res.status(404).send({message: 'Such interlocutor does not exist'});
+        } else {
+            // Creating new chat
+            const newChat = {
+                id1: id1,
+                id2: id2,
+                messages: []
+            }
+
+            addChatToDB(newChat);
+
+            res.status(200).send({newChat});
+        }
+    }
+})
+
+chatRouter.get('/list/:id', (req, res) => {
+    const { id } = req.params;
+
+    console.log("Request get /list in /chat:", id);
+
+    const userChats = getUsersChats(id);
+
+    if (!userChats) {
+        res.status(404).send({message: 'Error with retrieving chats'});
+    } else {
+        res.status(200).send({chats: userChats});
+    }
+})
+
+chatRouter.post('/message/:sender/:receiver', (req, res) => {
+    const { sender, receiver } = req.params;
+    const { message } = req.body;
+    console.log("Request post /message in /chat:", sender, receiver, message);
+
+    const chat = getChatFromDB(sender, receiver);
+
+    if (!chat) {
+        // Chat already exists
+        res.status(400).send({message: "Such chat does not exist"});
+    } else {
+        if (!getUserFromDB(sender) || !getUserFromDB(receiver)) {
+            res.status(404).send({message: 'Such people do not exist'});
+        } else {
+            // Add new message
+            addMessageToChat(chat, message);
+            res.status(200).send({});
+        }
+    }
+})