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todo-react/README.md

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+## Todo app
+
+This project contains a simple todo application
+
+It has following features-
+Anyone can create a todo
+Anyone can see their existing todos
+Anyone can mark a todo as done
+
+// initialize a node project

todo-react/backend/db.js

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+const mongoose = require("mongoose");
+const { boolean } = require("zod");
+
+mongoose.connect("mongodb://localhost:27017/Todo-app");
+//changer this to your mongoDb link to get connected to your database
+
+const todoSchema = mongoose.Schema({
+    title : String,
+    description : String,
+    completed : Boolean,
+})
+
+const todo = mongoose.model('todos',todoSchema);
+
+module.exports={
+    todo
+}

todo-react/backend/index.js

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+const express = require("express");
+const {createTodo,updateTodo} = require("./types");
+const app = express();
+const cors = require('cors');
+const {todo} = require("./db")
+
+app.use(express.json());
+app.use(cors());
+app.post("/todo", async function(req,res){
+    const createPayload = req.body;
+    const parsedPayload = createTodo.safeParse(createPayload);
+    if(!parsedPayload.success){
+        res.status(411).json({
+            msg : "You sent the wrong inputs",
+        })
+        return;
+    }
+    await todo.create ({
+        title : createPayload.title,
+        description : createPayload.description,
+        completed : false
+    })
+    res.json({
+        msg : "Todo created"
+    })
+})
+app.get("/todo",async function(req,res){
+    const todos =await todo.find({});
+
+    res.json({
+        todos
+    })
+})
+app.put("/completed",async function(req,res){
+    const updatePayload = req.body;
+    const parsedPayload = createTodo.safeParse(updatePayloadPayload);
+    if(!parsedPayload.success){
+        res.status(411).json({
+            msg : "You sent the wrong inputs",
+        })
+        return;
+    }
+    await todo.update({
+        _id : req.body._id
+    },{
+        completed : true
+    })
+    res.json({
+        msg : "To marked as completed"
+    })
+})
+
+app.listen(3000);