const { spawn } = require('child_process');
const { basename, join, resolve } = require('path');

// Path where the executables of local npm dependencies are.
const appRoot = resolve(__dirname, '..');

// General colors
const reset = "\x1b[0m";

// Fore ground colors.
const fgRed = "\x1b[31m";
const fgYellow = "\x1b[33m";
const fgGreen = "\x1b[32m";
const fgMagenta = "\x1b[35m";
const fgCyan = "\x1b[36m";

const gulpSpawn = (cmd, args, done) => {
    const stream = spawn(
        resolve(__dirname, '../node_modules/.bin', cmd),
        args,
        { stdio: 'inherit', cwd: appRoot, shell: true }
    );
    stream.on('exit', (code) => {
        const colored = `${fgCyan}${basename(cmd)} ${args.join(' ')}${reset}`;
        console.log(`\nChild process [ ${colored} ] exited with code ${code}\n`);
        
        if (code !== 0) {
            process.exit(code);
        }

        done();
    });
};

module.exports.gulpSpawn = gulpSpawn;