#!/usr/bin/env node

var path = require('path');
var fs = require('fs');
var join = path.join;
var read = fs.readFileSync;
var write = fs.writeFileSync;
var readdir = fs.readdirSync;

var dep = process.argv[2];
var version = process.argv[3];
if (!dep || !version) {
	console.log('usage:');
	console.log('  ' + process.argv.slice(0, 2).join(' ') + ' <dependencyName> <newVersion>');
	return process.exit(2);
}

console.log();
console.log('  updating %s to %s', dep, version);
var dirs = [
	'server',
	'client'
];

function visitPackageFiles(dir, callback) {
	fs.readdir( dir, function( err, list ) {
		if (err) {
			callback( err );
		}

		list.forEach( function(file) {

			file = join( dir, file );

			if ( /package\.json$/.test( file ) ) {
				callback( null, file );
			}

			fs.stat(file, function( err, stat ) {
				if ( stat && stat.isDirectory() ) {
			  		visitPackageFiles( file, callback );
			  	}
			});
		});
	});
}

dirs.forEach( function ( dir ) {
	visitPackageFiles( dir, function( err, path ) {
		if ( err ) { console.log( err ); }
		var conf;
		try {
			conf = JSON.parse( read( path, 'utf8' ) );
		} catch (e) {
			//console.error('skipping %j: %s', name, e);
			return;
		}
		[ 'dependencies', 'devDependencies' ].forEach(function (dependencies) {
			if (! conf[dependencies] ) {
				return;
			}
			if (! conf[dependencies][dep] ) {
				return;
			}
			var curr = conf[dependencies][dep];
			console.log('  updating %j %j %s v%s -> v%s', path, dependencies, dep, curr, version);
			conf[dependencies][dep] = version;
		});
		var json = JSON.stringify(conf, null, 2);
		write(path, json + '\n');
	});
});
console.log('');