catshelter.js

const url = require('url');
const fs = require('fs');
const path = require('path');
const qs = require('querystring');
const formidable = require('formidable');
const breeds = require('../data/breeds.json');
const cats = require('../data/cats.json');

module.exports = (req, res) => {
    const pathname = url.parse(req.url).pathname;

    if (pathname === '/cats/add-cat' && req.method === 'GET') {
        let filePath = path.normalize(path.join(__filename.slice(0, __filename.length - 8), '../views/addCat.html'));

        const index = fs.createReadStream(filePath);

        index.on('data', (data) => {
            let catBreedPlaceholder = breeds.map((breed) => `<option value="${breed}">${breed}</option>`);
            let modifiedData = data.toString().replace('{{catBreeds}}', catBreedPlaceholder);

            res.write(modifiedData);
        });

        index.on('end', () => {
            res.end();
        });

        index.on('error', (err) => {
            console.log(err);
        });
    } else if (pathname === '/cats/add-breed' && req.method === 'GET') {
        let filePath = path.normalize(path.join(__filename.slice(0, __filename.length - 8), '../views/addBreed.html'));

        const index = fs.createReadStream(filePath);

        index.on('data', (data) => {
            res.write(data);
        });

        index.on('end', () => {
            res.end();
        });

        index.on('error', (err) => {
            console.log(err);
        });
    } else if (pathname === '/cats/add-cat' && req.method === 'POST') {
        let form = new formidable.IncomingForm();

        form.parse(req, (err, fields, files) => {
            if (err) {
                throw err;
            };

            let midPath = files.upload.path;
            //console.log(fields);
            //console.log(files);
            //console.log(midPath);
            let newPath = path.normalize(path.join(globalPath, '/content/images/' + files.upload.name));

            fs.readFile('./data/cats.json', 'utf-8', (err, data) => {
                if (err) {
                    throw err;
                };

                let allCats = JSON.parse(data);
                allCats.push({ id: cats.length + 1, ...fields, image: fields.upload.name });

                let json = JSON.stringify(allCats);
                fs.writeFile('./data/cats.json', json, () => {
                    res.writeHead(302, { location: '/' });
                    res.end();
                });
            });
        });
    } else if (pathname === '/cats/add-breed' && req.method === 'POST') {
        let formData = '';

        req.on('data', (data) => {
            formData += data;
        });

        req.on('end', () => {
            let body = qs.parse(formData);

            fs.readFile('./data/breeds.json', (err, data) => {
                if (err) {
                    throw err;
                }

                let breeds = JSON.parse(data);
                breeds.push(body.breed);
                let json = JSON.stringify(breeds);

                fs.writeFile('./data/breeds.json', json, 'utf-8', () => console.log('The breed was uploaded successfully!'));
            });

            res.writeHead(302, { location: '/' });
            res.end();
        });
    } else {
        return true;
    }
}