creating first api

index.js

@@ -0,0 +1,96 @@
+import express from "express";
+import bodyParser from "body-parser";
+
+const app = express();
+const port = 4000;
+
+// In-memory data store
+let posts = [
+  {
+    id: 1,
+    title: "The Rise of Decentralized Finance",
+    content:
+      "Decentralized Finance (DeFi) is an emerging and rapidly evolving field in the blockchain industry. It refers to the shift from traditional, centralized financial systems to peer-to-peer finance enabled by decentralized technologies built on Ethereum and other blockchains. With the promise of reduced dependency on the traditional banking sector, DeFi platforms offer a wide range of services, from lending and borrowing to insurance and trading.",
+    author: "Alex Thompson",
+    date: "2023-08-01T10:00:00Z",
+  },
+  {
+    id: 2,
+    title: "The Impact of Artificial Intelligence on Modern Businesses",
+    content:
+      "Artificial Intelligence (AI) is no longer a concept of the future. It's very much a part of our present, reshaping industries and enhancing the capabilities of existing systems. From automating routine tasks to offering intelligent insights, AI is proving to be a boon for businesses. With advancements in machine learning and deep learning, businesses can now address previously insurmountable problems and tap into new opportunities.",
+    author: "Mia Williams",
+    date: "2023-08-05T14:30:00Z",
+  },
+  {
+    id: 3,
+    title: "Sustainable Living: Tips for an Eco-Friendly Lifestyle",
+    content:
+      "Sustainability is more than just a buzzword; it's a way of life. As the effects of climate change become more pronounced, there's a growing realization about the need to live sustainably. From reducing waste and conserving energy to supporting eco-friendly products, there are numerous ways we can make our daily lives more environmentally friendly. This post will explore practical tips and habits that can make a significant difference.",
+    author: "Samuel Green",
+    date: "2023-08-10T09:15:00Z",
+  },
+];
+
+let lastId = 3;
+
+// Middleware
+app.use(bodyParser.json());
+app.use(bodyParser.urlencoded({ extended: true }));
+
+
+app.get("/posts", (req, res) => {
+  console.log(posts);
+  res.json(posts);
+});
+
+app.get("/posts/:id", (req, res) =>{
+  const id = parseInt(req.params.id);
+  const post = posts.find((p) => p.id === id);
+  if(post){
+    return res.json(post);
+  }else{
+    res.sendStatus(404).json({message: "post not found"});
+  }
+});
+
+app.post("/posts", (req, res) => {
+  const newId = lastId += 1;
+  const post ={
+    id : newId,
+    title: req.body.title,
+    content: req.body.content,
+    author: req.body.author,
+    date: new Date(),
+  }
+  lastId = newId;
+  posts.push(post);
+  res.status(201).json(post);
+});
+
+app.patch("/posts/:id", (req, res) => {
+  const id = parseInt(req.params.id);
+  const post = posts.find((p) => p.id === id);
+  if(!post) return res.status(404).json({message: "Post not found!"});
+
+  if(req.body.title) post.title = req.body.title;
+  if(req.body.content) post.content = req.body.content;
+  if(req.body.author) post.author = req.body.author;
+
+  res.json(post);
+});
+
+app.delete("/posts/:id", (req, res) => {
+  const id = parseInt(req.params.id);
+  const index = posts.findIndex((p) => p.id === id);
+  if(index > -1){
+    posts.splice(index, 1);
+    res.json({message : "Post deleted"});
+  }else{
+    res.status(404).json({message: "Post not found!"});
+  }
+});
+
+app.listen(port, () => {
+  console.log(`API is running at http://localhost:${port}`);
+});