/**
 * Gulp tasks for development and production.
 *
 * Run
 *
 *      $ ./node_modules/.bin/gulp
 *
 * for development and
 *
 *      $ ./node_modules/.bin/gulp --production
 *
 * for production mode.
 */

var argv = require('yargs').argv,
    gulp = require('gulp'),
    concat = require('gulp-concat'),
    gulpif = require('gulp-if'),
    gettext = require('gulp-angular-gettext'),
    jshint = require('gulp-jshint'),
    mainBowerFiles = require('main-bower-files'),
    minifyCSS = require('gulp-minify-css'),
    path = require('path'),
    uglify = require('gulp-uglify');

// Directory where the results go
var output_directory = path.join('openslides', 'static');


/**
 * Default tasks to be run before start.
 */

// Catches all JavaScript files from all bower components and concats them to
// one file js/openslides-libs.js. In production mode the file is uglified.
gulp.task('js-libs', function () {
    return gulp.src(mainBowerFiles({
            filter: /\.js$/
        }))
        .pipe(concat('openslides-libs.js'))
        .pipe(gulpif(argv.production, uglify()))
        .pipe(gulp.dest(path.join(output_directory, 'js')));
});

// Catches all CSS files from all bower components and concats them to one file
// css/openslides-libs.css. In production mode the file is uglified.
gulp.task('css-libs', function () {
    return gulp.src(mainBowerFiles({
            filter: /\.css$/
        }))
        .pipe(concat('openslides-libs.css'))
        .pipe(gulpif(argv.production, minifyCSS()))
        .pipe(gulp.dest(path.join(output_directory, 'css')));
});

// Catches all font files from all bower components.
gulp.task('fonts-libs', function() {
    return gulp.src(mainBowerFiles({
            filter: /\.(eot)|(svg)|(ttf)|(woff)|(woff2)$/
        }))
        .pipe(gulp.dest(path.join(output_directory, 'fonts')));
});

// Extra task only for CKEditor
gulp.task('ckeditor', function () {
    return gulp.src(path.join('bower_components', 'ckeditor', '**'))
        .pipe(gulp.dest(path.join(output_directory, 'ckeditor')));
});

// Gulp default task. Runs all other tasks before.
gulp.task('default', ['js-libs', 'css-libs', 'fonts-libs', 'ckeditor'], function () {});


/**
 * Extra tasks that have to be called manually. Useful for development and
 * packageing.
 */

// Extracts translatable strings using angular-gettext and saves them in file
// openslides/locale/angular-gettext/template-en.pot.
gulp.task('pot', function () {
    return gulp.src(['openslides/*/static/templates/*/*.html',
                     'openslides/*/static/js/*/*.js'])
        .pipe(gettext.extract('template-en.pot', {}))
        .pipe(gulp.dest('openslides/locale/angular-gettext/'));
});

// Compiles translation files (*.po) to *.json and saves them in the directory
// openslides/static/i18n/.
gulp.task('translations', function () {
    return gulp.src('openslides/locale/angular-gettext/*.po')
        .pipe(gettext.compile({
            format: 'json'
        }))
        .pipe(gulp.dest(path.join(output_directory, 'i18n')));
});

// Checks JavaScript using JSHint
gulp.task( 'jshint', function () {
    return gulp.src([ 'gulpfile.js', path.join( 'openslides', '*', 'static', '**', '*.js' ) ])
        .pipe(jshint())
        .pipe(jshint.reporter('default'));
});