const child_process = require('child_process');
const async = require('async');
const colors = require('ansi-colors');
const log = require('fancy-log');

const TAG = colors.green('[exec]');
const verbose = process.argv.indexOf('--verbose') > -1;

const queue = async.queue((task, done) => {
    if (verbose) log(TAG, colors.magenta(task.command));
    //process.chdir(task.dir);
    child_process.exec(task.command, {cwd: task.dir, maxBuffer: 1024 * 5000}, (err, stdout, stderr) => {
        if (verbose) log(TAG, err ? colors.red(err) : '', stdout, colors.red(stderr));
        if (err) {
            task.failure(stderr || stdout || err);
        } else {
            task.success({stdout: stdout, stderr: stderr});
        }
        done();
    });
});

module.exports = (dir, command) => {
    return new Promise((success, failure) => {
        queue.push({
            dir: dir,
            command: command,
            success: success,
            failure: failure,
        });
    });
};