var gulp = require('gulp');
var gutil = require('gulp-util');
var bower = require('bower');
var concat = require('gulp-concat');
var sass = require('gulp-sass');
var minifyCss = require('gulp-minify-css');
var rename = require('gulp-rename');
var sh = require('shelljs');
var mainBowerFiles = require('main-bower-files');
var templateCache = require('gulp-angular-templatecache');
var gulpFilter = require('gulp-filter');

var paths = {
  sass: [
    './scss/**/*.scss'
  ],
  jsProject: [
    './www/js/app.js',
    './www/js/**/module.js',
    './www/js/**/module.config.js',
    './www/js/**/service.js',
    './www/js/**/routes.js',
    './www/js/**/controller.js',
    './www/js/**/*.js',
    '!./www/js/**/*-test.js'
  ],
  jsProjectTarget: 'project.js',
  jsVendorTarget: 'vendor.js',
  scssProject: ['./scss/ionic.app.scss'],
  cssVendorTarget: 'vendor.css',
  htmlProject: ['./www/js/**/*.html'],
  cssProject: ['./www/css/**/*.css'],
  cssProjectTarget: 'project.css',
  dist: 'www/dist'
};

gulp.task('default', ['sass']);

gulp.task('build', function() {
  gulp.start('sass');
  gulp.start('js-concat-project');
  gulp.start('js-concat-vendor');
  gulp.start('css-concat-project');
  gulp.start('css-concat-vendor');
  gulp.start('fonts-concat-vendor');
  gulp.start('html-concat-templates');
});

gulp.task('sass', function (done) {
  gulp.src(paths.scssProject)
    .pipe(sass())
    .pipe(gulp.dest('./www/css/'))
    .on('end', done);
});

gulp.task('js-concat-project', function () {
  return gulp.src(paths.jsProject)
    .pipe(concat(paths.jsProjectTarget))
    .pipe(gulp.dest(paths.dist));
});

gulp.task('js-concat-vendor', function () {
  return gulp.src(mainBowerFiles('**/*.js'))
    .pipe(concat(paths.jsVendorTarget))
    .pipe(gulp.dest(paths.dist));
});

gulp.task('css-concat-project', function () {
  return gulp.src(paths.cssProject)
    .pipe(concat(paths.cssProjectTarget))
    .pipe(minifyCss())
    .pipe(gulp.dest(paths.dist));
});

gulp.task('css-concat-vendor', function () {
  return gulp.src(mainBowerFiles('**/*.css'))
    .pipe(concat(paths.cssVendorTarget))
    .pipe(minifyCss())
    .pipe(gulp.dest(paths.dist));
});

gulp.task('fonts-concat-vendor', function () {
  return gulp.src(mainBowerFiles())
    .pipe(gulpFilter(function (file) {
      return /ionic\/release\/fonts/.test(file.path);
    }))
    .pipe(gulp.dest('./www/dist/fonts/'));
});

gulp.task('html-concat-templates', function() {
  gulp.src(paths.htmlProject)
    .pipe(templateCache({
      module:'templatescache', standalone: true, root: './js'
    }))
    .pipe(gulp.dest('www/dist/'))
  ;
});

gulp.task('watch', function() {
  gulp.watch(paths.sass, ['sass']);
  gulp.watch(paths.jsProject, ['js-concat-project']);
  gulp.watch(paths.htmlProject, ['html-concat-templates']);
  gulp.watch(paths.cssProject, ['css-concat-project']);
  gulp.watch(paths.sass, ['sass']);
});

gulp.task('install', ['git-check'], function() {
  return bower.commands.install()
    .on('log', function(data) {
      gutil.log('bower', gutil.colors.cyan(data.id), data.message);
    });
});

gulp.task('git-check', function(done) {
  if (!sh.which('git')) {
    console.log(
      '  ' + gutil.colors.red('Git is not installed.'),
      '\n  Git, the version control system, is required to download Ionic.',
      '\n  Download git here:', gutil.colors.cyan('http://git-scm.com/downloads') + '.',
      '\n  Once git is installed, run \'' + gutil.colors.cyan('gulp install') + '\' again.'
    );
    process.exit(1);
  }
  done();
});

gulp.task('serve:before', ['build', 'watch']);