server.js

const path = require("path");
const fs = require("fs");
const express = require("express");
const { json } = require("express");

const app = express();
const PORT = process.env.PORT || 7500;

app.use(express.urlencoded({
    extended: true
}));
app.use(express.static("public"));
app.use(express.json());

app.get("/", function (req, res) {
    res.sendFile(path.join(__dirname, "/public/index.html"));
});

app.get("/notes", function (req, res) {
    res.sendFile(path.join(__dirname, "/public/notes.html"))
});

app.get("/api/notes", function (req, res) {
    var apiNotes = JSON.parse(fs.readFileSync("./db/db.json", "utf8"))
    res.json(apiNotes);
});

app.post("/api/notes", function (req, res) {
    var body = req.body;
    body.id = Math.floor(Math.random() * 1000)

    let arrayNote = JSON.parse(fs.readFileSync("./db/db.json", "utf8"));
    arrayNote.push(body);
    fs.writeFileSync("./db/db.json", JSON.stringify(arrayNote), "utf8");
    res.json(arrayNote);
});

app.delete("/api/notes/:id", function (req, res) {
    const { id } = req.params;
    var deleteArray = JSON.parse(fs.readFileSync("./db/db.json", "utf8"));
    console.log(deleteArray);
    console.log(id);
    for (i = 0; i < deleteArray.length; i++) {
        if (id == deleteArray[i].id) {
            deleteArray.splice(i, 1);
            fs.writeFileSync("./db/db.json", JSON.stringify(deleteArray), "utf8");
            res.json(deleteArray);
            break;
        }
    }
})

app.listen(PORT, function () {
    console.log("Listening on PORT: " + PORT)
});