/**
 * Jake build script
 */
var jake = require('jake'),
    path = require('path'),
    cleanCss = require('clean-css'),
    archiver = require('archiver'),
    fs = require('fs');

require('jake-utils');

// constants
var JSONEDITOR = './jsoneditor.js',
    JSONEDITOR_CSS = './jsoneditor.css',
    JSONEDITOR_MIN = './jsoneditor-min.js',
    JSONEDITOR_CSS_MIN = './jsoneditor-min.css',
    BUILD = './build';

/**
 * default task
 */
desc('Execute all tasks');
task('default', ['clear', 'build', 'minify', 'zip', 'webapp', 'chromeapp'], function () {
    console.log('Done');
});

/**
 * build the library
 */
desc('Clear the build directory');
task('clear', function () {
    jake.rmRf(BUILD);
});

/**
 * build the library
 */
desc('Build the library');
task('build', ['clear'], function () {
    var jsoneditorSrc = './jsoneditor/';
    // concatenate the javascript files
    concat({
        src: [
            jsoneditorSrc + 'js/jsoneditor.js',
            jsoneditorSrc + 'js/treeeditor.js',
            jsoneditorSrc + 'js/texteditor.js',
            jsoneditorSrc + 'js/node.js',
            jsoneditorSrc + 'js/appendnode.js',
            jsoneditorSrc + 'js/contextmenu.js',
            jsoneditorSrc + 'js/history.js',
            jsoneditorSrc + 'js/searchbox.js',
            jsoneditorSrc + 'js/highlighter.js',
            jsoneditorSrc + 'js/util.js',
            jsoneditorSrc + 'js/module.js'
        ],
        dest: JSONEDITOR,
        header: read(jsoneditorSrc +'js/header.js') + '\n' +
            '(function () {\n',
        separator: '\n',
        footer: '\n})();\n'
    });

    // update version number and stuff in the javascript files
    replacePlaceholders(JSONEDITOR);
    console.log('Created ' + JSONEDITOR);

    // concatenate and stringify the css files
    concat({
        src: [
            jsoneditorSrc + 'css/jsoneditor.css',
            jsoneditorSrc + 'css/contextmenu.css',
            jsoneditorSrc + 'css/menu.css',
            jsoneditorSrc + 'css/searchbox.css'
        ],
        dest: JSONEDITOR_CSS,
        separator: '\n'
    });
    console.log('Created ' + JSONEDITOR_CSS);

    // minify the css file
    write(JSONEDITOR_CSS_MIN, cleanCss.process(String(read(JSONEDITOR_CSS))));

    // create a folder img and copy the icons
    jake.mkdirP('./img');
    jake.cpR(jsoneditorSrc + 'css/img/jsoneditor-icons.png', './img/');
    console.log('Copied jsoneditor-icons.png to ./img/');
});

/**
 * minify the library
 */
desc('Minify the library');
task('minify', ['build'], function () {
    // minify javascript
    minify({
        src: JSONEDITOR,
        dest: JSONEDITOR_MIN,
        header: read('./jsoneditor/js/header.js'),
        separator: '\n'
    });

    // update version number and stuff in the javascript files
    replacePlaceholders(JSONEDITOR_MIN);

    console.log('Created ' + JSONEDITOR_MIN);
});

/**
 * zip the library
 */
desc('Zip the library');
task('zip', ['build', 'minify'], {async: true}, function () {
    var zipfolder = BUILD + '/lib';
    var pkg = 'jsoneditor-' + version();
    var zipfile = zipfolder + '/' + pkg + '.zip';
    jake.mkdirP(zipfolder);

    var output = fs.createWriteStream(zipfile);
    var archive = archiver('zip');

    archive.on('error', function(err) {
        throw err;
    });

    archive.pipe(output);

    var filelist = new jake.FileList();
    filelist.include([
        'README.md',
        'NOTICE',
        'LICENSE',
        'HISTORY.md',
        JSONEDITOR,
        JSONEDITOR_CSS,
        JSONEDITOR_MIN,
        JSONEDITOR_CSS_MIN,
        'img/*.*',
        'lib/**/*.*',
        'examples/**/*.*'
    ]);
    var files = filelist.toArray();
    files.forEach(function (file) {
        archive.append(fs.createReadStream(file), {
            name: pkg + '/' + file
        })
    });

    archive.finalize(function(err, written) {
        if (err) {
            throw err;
        }

        console.log('Zipped ' + zipfile);
        complete();
    });
});

/**
 * build the web app
 */
desc('Build web app');
task('webapp', ['build', 'minify'], function () {
    var webAppSrc = './app/web/';
    var libSrc = './lib/';
    var webApp = BUILD + '/app/web/';
    var webAppLib = webApp + 'lib/';
    var webAppAce = webAppLib + 'ace/';
    var webAppImg = webApp + 'img/';
    var webAppDoc = webApp + 'doc/';
    var appJs = webApp + 'app.js';
    var appCss = webApp + 'app.css';
    var appCssMin = webApp + 'app-min.css';
    var appJsMin = webApp + 'app-min.js';

    // create directories
    // TODO: should be created automatically...
    jake.mkdirP(webApp);
    jake.mkdirP(webAppLib);
    jake.mkdirP(webAppLib + 'ace/');
    jake.mkdirP(webAppLib + 'jsoneditor/');
    jake.mkdirP(webAppLib + 'jsoneditor/img/');
    jake.mkdirP(webAppLib + 'jsonlint/');
    jake.mkdirP(webAppImg);
    jake.mkdirP(webAppDoc);

    // concatenate the javascript files
    concat({
        src: [
            webAppSrc + 'queryparams.js',
            webAppSrc + 'ajax.js',
            webAppSrc + 'fileretriever.js',
            webAppSrc + 'notify.js',
            webAppSrc + 'splitter.js',
            webAppSrc + 'app.js'
        ],
        dest: appJs,
        separator: '\n'
    });

    // minify javascript
    minify({
        src: appJs,
        dest: appJsMin
    });

    // concatenate the css files
    concat({
        src: [
            webAppSrc + 'fileretriever.css',
            webAppSrc + 'app.css'
        ],
        dest: appCss,
        separator: '\n'
    });

    // minify css file
    write(appCssMin, cleanCss.process(String(read(appCss))));

    // remove non minified javascript and css file
    fs.unlinkSync(appJs);
    fs.unlinkSync(appCss);

    // copy files
    jake.cpR('./README.md', webApp);
    jake.cpR('./HISTORY.md', webApp);
    jake.cpR('./NOTICE', webApp);
    jake.cpR('./LICENSE', webApp);
    jake.cpR('./LICENSE', webApp);
    jake.cpR(webAppSrc + 'robots.txt', webApp);
    jake.cpR(webAppSrc + 'datapolicy.txt', webApp);
    jake.cpR(webAppSrc + 'index.html', webApp);
    jake.cpR(webAppSrc + 'favicon.ico', webApp);
    jake.cpR(webAppSrc + 'fileretriever.php', webApp);
    jake.cpR(webAppSrc + 'googlea47c4a0b36d11021.html', webApp);
    jake.cpR(webAppSrc + 'img/logo.png', webAppImg);
    jake.cpR(webAppSrc + 'img/header_background.png', webAppImg);
    jake.cpR(webAppSrc + 'doc/', webAppDoc);

    // update date and verison in index.html
    replacePlaceholders(webApp + 'index.html');
    replacePlaceholders(webApp + 'index.html'); // TODO: fix bug in replace, should replace all occurrences

    // concatenate and copy ace files
    concat({
        src: [
            libSrc + 'ace/ace.js',
            libSrc + 'ace/mode-json.js',
            libSrc + 'ace/theme-textmate.js',
            libSrc + 'ace/theme-jsoneditor.js'
        ],
        dest: webAppAce + 'ace-min.js',
        separator: '\n'
    });
    jake.cpR(libSrc + 'ace/worker-json.js', webAppAce);

    // copy json lint file
    jake.cpR(libSrc + 'jsonlint/jsonlint.js', webAppLib + 'jsonlint/')

    // copy jsoneditor files
    jake.cpR(JSONEDITOR_MIN, webAppLib + 'jsoneditor/');
    jake.cpR(JSONEDITOR_CSS_MIN, webAppLib + 'jsoneditor/');
    jake.cpR('img', webAppLib + 'jsoneditor/');

});

/**
 * build the chrome app
 */
desc('Build chrome app');
task('chromeapp', {async: true}, function () {
    var folder = BUILD + '/app/';
    var file = folder + 'chrome.zip';
    jake.mkdirP(folder);

    var output = fs.createWriteStream(file);
    var archive = archiver('zip');

    archive.on('error', function(err) {
        throw err;
    });

    // create a temporary manifest file with version number
    var manifestTmp = folder + 'manifest.json.tmp';
    jake.cpR('./app/chrome/manifest.json', manifestTmp);
    replacePlaceholders(manifestTmp);

    archive.pipe(output);
    archive.append(fs.createReadStream(manifestTmp), {name: 'manifest.json'});
    archive.append(fs.createReadStream('./app/web/img/icon_16.png'), {name: 'icon_16.png'});
    archive.append(fs.createReadStream('./app/web/img/icon_128.png'), {name: 'icon_128.png'});

    // cleanup temporary manifest file
    fs.unlinkSync(manifestTmp);

    archive.finalize(function(err, written) {
        if (err) {
            throw err;
        }

        console.log('Created chrome app ' + file);
        complete();
    });
});

/**
 * replace version, date, and name placeholders in the provided file
 * @param {String} filename
 */
var replacePlaceholders = function (filename) {
    replace({
        replacements: [
            {pattern: '@@date',    replacement: today()},
            {pattern: '@@version', replacement: version()}
        ],
        src: filename
    });
};