#!/usr/bin/env node

var path = require('path');
var fs = require('fs');
var program = require('commander');
var _ = require("lodash");
var ems = require('..');

var pkg = require('../package.json');

program
    .version(pkg.version)
    .usage('<target>')
    .option('-s, --source-maps', 'write sourcemap files')
    .option('-e, --embed-mapping-comments', 'embed sourcemap url into created files')
    .option('-c, --compress', 'create gzipped files')
    .on('--help', function(){
        console.log('  Examples:');
        console.log('');
        console.log('    $ ems precompile');
        console.log('    $ ems precompile my-spa-application');
        console.log('    $ ems precompile /path/to/my-spa-application');
        console.log('');
    })
    .parse(process.argv);
    

// Setup NODE ENV to production
process.env.NODE_ENV = 'production';

var target = program.args[0] || process.cwd();
var targetPath = path.resolve(process.cwd(), target);
if(fs.existsSync(targetPath)) {
    var app = require(targetPath);
    app.bootstrap({
        assets: {
            production: false
        },
        precompile: {
            options: {
                sourceMaps: program.sourceMaps,
                embedMappingComments: program.embedMappingComments,
                compress: program.compress
            }
        }
    });
    
    if(_.has(app, 'assetPipeline')) {
        var manifest = new app.assetPipeline.Mincer.Manifest(
            app.assetPipeline.environment,
            app.config.precompile.target
        );
        var files = app.config.precompile.files || [];
        if(app.config.precompile.fonts) {
            files = _.concat(files, ems.getPrecompileFonts());
        }
        
        if(app.config.precompile.images) {
            files = _.concat(files, ems.getPrecompileImages());
        }
        var data = manifest.compile(files, app.config.precompile.options);
        for(var f in data.assets) {
            var asset = data.assets[f];
            console.log('compiled %s to %s', f, asset);
        }
    } else {
        console.error('Target application does not have a mincer asset pipeline');
    }
} else {
    console.error('Target application '+target+' does not exists');
}