const express = require("express");
const app = express();
const fs = require('fs');
const bodyParser = require("body-parser");
app.use(express.static('public'));
app.use(bodyParser.urlencoded());
app.set('view engine', 'pug');

//Home page route
app.get('/', (req, res) => {
    res.render('index', {
        title: 'Home'
    });
});

app.get('/users', (req, res) => {
        fs.readFile("allusers.json", (err, userData) => {
            if (err) {
                console.log('File not found!');
            }
            let parsedData = JSON.parse(userData);
            data = parsedData;
        res.render('users', {
            title: 'Users',
            data: data
        });
    });
});

app.get('/search', (req, res) => {
    res.render('search', {
        title: 'Search Bar',
        searchResult: []
    });
});

app.post('/search', (req, res) => {
    fs.readFile("allusers.json", (err, userData) => {
        if (err) {
            console.log('File not found!')
        }
        let parsedData = JSON.parse(userData);
        let searchResult = [];
        parsedData.forEach(function(user){
            if (req.body.input) {
                input = req.body.input.toLowerCase()
                if (user.firstname.slice(0, input.length).toLowerCase() === input || user.lastname.slice(0, input.length).toLowerCase() === input) {
                    searchResult.push(user);
                }
            }
        });
        res.json({
            searchResult: searchResult
        });
    });
});

app.get('/adduser', (req, res) => {
    res.render('adduser', {
        title: 'Add User'
    });
});

app.post('/adduser', (req, res) => {
    fs.readFile("allusers.json", (err, userData) => {
        if (err) {
            console.log('File not found!');
        }
        let userFile = JSON.parse(userData);
        userFile.push({ firstname: req.body.firstname, lastname: req.body.lastname, email: req.body.email });
        fs.writeFile("allusers.json", JSON.stringify(userFile), function(err){
            if (err) throw err;
        console.log('The data was appended to file!');
        res.redirect('/users');
        });
    });
});

//Initiated a local server on port 4000
app.listen(4000, () => {
    console.log('listening');
});