denis-sokolov/portent

'use strict';

var childProcess = require('child_process');
var fs = require('fs');

var Promise = require('promise');

module.exports = function(directory, destination){
    directory += (directory.endsWith('/') ? '' : '/');
    destination += (destination.endsWith('/') ? '' : '/');

    return Promise.denodeify(fs.stat)(directory)
        .then(function(stats){
            if (!stats.isDirectory())
                throw new Error('Directory to deploy does not seem to exist, point to build/.');
        }, function(error){
            if (error.code === 'ENOENT')
                throw new Error('Directory to deploy does not seem to exist, point to build/.');
            throw error;
        }).then(function(){ return new Promise(function(resolve, reject){
            var rsync = childProcess.spawn('rsync', [
                '--recursive',
                '--delete',
                '--progress',
                directory,
                destination
            ], { stdio: [0, 1, 2] });
            rsync.on('close', function(code){
                if (code === 0)
                    return resolve();
                reject(new Error('rsync failed'));
            });
        }); });
};