volofile

/*jslint node: true, regexp: true */
'use strict';

var crypto = require('crypto'),
    fs = require('fs'),
    path = require('path'),
    buildDir = 'www-built',
    pagesDir = 'www-ghpages';

module.exports = {
    //Builds the JS and CSS into one file each. If you want to do
    //dynamic loading of scripts, pass -dynamic to the build, and
    //require.js will be used to load scripts.
    build: {
        flags: {
            //Does not print the build output.
            'q': 'quiet',
            //Uses dynamic loading via require.js instead of building
            //all the modules in with almond.
            'dynamic': 'dynamic'
        },

        run: function (d, v, namedArgs) {
            var q = v.require('q');

            (q.fcall || q.call)(function () {
                //Remove the old dir
                v.rm(buildDir);

                if (!namedArgs.dynamic) {
                    //Copy the directory for output.
                    v.copyDir('www', buildDir);

                    //Remove the js dir from the built area, will be
                    //replaced by an optimized app.js
                    v.rm(buildDir + '/js');

                    //Do the CSS optimization
                    return v.spawn('node', ['tools/r.js', '-o',
                                            'cssIn=www/css/app.css',
                                            'out=' + buildDir + '/css/app.css'], {
                        useConsole: !namedArgs.quiet
                    });
                }
                return undefined;
            })
                .then(function () {
                    //JS go time
                    var optimize = namedArgs.optimize || 'uglify';

                    if (namedArgs.dynamic) {
                        //Still use require.js to load the app.js file.
                        return v.spawn('node', ['tools/r.js', '-o',
                                        'appDir=www',
                                        'baseUrl=js/lib',
                                        'paths.app=../app',
                                        'name=app',
                                        'dir=' + buildDir,
                                        'optimize=' + optimize], {
                            useConsole: !namedArgs.quiet
                        });
                    } else {
                        //The all-in-one option.
                        return v.spawn('node', ['tools/r.js', '-o',
                                        'baseUrl=www/js/lib',
                                        'paths.app=../app',
                                        'paths.almond=../../../tools/almond',
                                        'name=almond',
                                        'include=app',
                                        'out=' + buildDir + '/js/app.js',
                                        'optimize=' + optimize], {
                            useConsole: !namedArgs.quiet
                        });
                    }
                })
                .then(function (buildOutput) {
                    //Remove all the CSS except for the app.css, since it
                    //inlines all the other ones.
                    v.getFilteredFileList(buildDir + '/css').forEach(function (path) {
                        if (!/app\.css$/.test(path)) {
                            v.rm(path);
                        }
                    });

                    //If almond is in use, it is built into app.js, so need
                    //to update the script tag to just load app.js instead.
                    if (!namedArgs.dynamic) {
                        var indexName = buildDir + '/index.html',
                            contents = v.read(indexName),
                            scriptRegExp = /(<script[^>]+data-main="[^"]+"[^>]+)(src="[^"]+")([^>]*>\s*<\/script>)/;

                        contents = contents.replace(scriptRegExp,
                            function (match, pre, script, post) {
                                return pre + 'src="js/app.js"' + post;
                            });

                        v.write(indexName, contents);
                    }
                    return buildOutput;
                })
                .then(function (buildOutput) {
                    d.resolve(buildOutput);
                }, d.reject);
        }
    },

    //Runs the build, and generates the appcache manifest
    appcache: require('volo-appcache')({
        depends: ['build'],
        dir: buildDir
    }),

    //Deploys the code to github pages.
    ghdeploy: require('volo-ghdeploy')(buildDir, pagesDir),

    //Runs less on the .less files in tools/less to generate the CSS files.
    less: {
        summary: 'Runs less on the .less files in tools/less to generate the CSS files.',
        run: [
            'node node_modules/less/bin/lessc tools/less/bootstrap.less www/css/bootstrap.css'
        ]
    },

    //Run as the result of first setting up this project via a
    //"volo create" call. Gets the twitter bootstrap code, and
    //jQuery.
    onCreate: {
        run: function (d, v, namedArgs, appName) {
            var tempName = 'tempbootstrap',
                q = v.require('q'),
                amdify = v.require('./commands/amdify'),
                jsNameRegExp = /(\w*)\.js$/;

            //First replace the name in the package.json with name from
            //creation.
            v.write('package.json', v.read('package.json').replace(/"name": "[^"]+"/, '"name": "' + appName + '"'));

            v.command('add', 'jquery/jquery', 'jquery')
                .then(function () {
                    //Grab the twitter bootstrap and jQuery
                    return v.command('create', tempName, 'twbs/bootstrap');
                })
                .then(function () {
                    //Move the JS to the right location.
                    var jsFiles = v.getFilteredFileList(tempName + '/js', /\.js$/, /js[\/\\]tests[\/\\]/),
                        promises = [];

                    jsFiles.forEach(function (file) {
                        //Pull off the name part from bootstrap-name.js pattern.
                        var match = jsNameRegExp.exec(file),
                            name,
                            destName,
                            damd;

                        if (!match) {
                            return;
                        }

                        name = jsNameRegExp.exec(file)[1];
                        destName = 'www/js/lib/bootstrap/' + name + '.js';
                        damd = q.defer();

                        v.copyFile(file, destName);

                        //Convert the file to AMD style
                        amdify.run.apply(amdify, [damd, v, {
                            depends: 'jquery'
                        }, destName]);

                        promises.push(damd);
                    });

                    //Wait for all the amdify calls to finish.
                    return q.all(promises);
                })
                .then(function () {
                    //Copy the images over.
                    v.copyDir(tempName + '/img', 'www/img');

                    //Copy the fonts over.
                    v.copyDir(tempName + '/fonts', 'www/fonts');

                    //Copy the less files.
                    v.copyDir(tempName + '/less', 'tools/less');

                    //Compile the CSS.
                    return v.command('less').then(function () {
                        v.rm(tempName);
                    });
                })
                .then(d.resolve, d.reject);
        }
    }
};