var path = require('path');
var browserify = require('browserify');
var watchify = require('watchify');
var source = require('vinyl-source-stream');
var gulp = require('gulp');
var newer = require('gulp-newer');
var clean = require('gulp-clean');
var less = require('gulp-less');

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

var folders = {
    src: 'src/',
    dist: 'dist/'
};

var browserifyOpts = {
    entries: [package.main],
    transform: [],
    extensions: ['.js', '.json'],
    cache: {},
    packageCache: {}
};

function blob(fpath, extension) {
    return path.join(fpath, '**', '*.' + extension);
}

// Tasks
gulp.task('default', ['build']);

gulp.task('build', ['application', 'style', 'static']);

gulp.task('clean', function () {
    gulp.src(folders.dist)
        .pipe(clean());
});

// By domain
gulp.task('application', ['js']);

gulp.task('style', ['less']);

gulp.task('static', ['html', 'svg']);

// By file
gulp.task('html', function () {
    gulp.src(blob(folders.src, 'html'))
        .pipe(newer(folders.dist))
        .pipe(gulp.dest(folders.dist));
});

gulp.task('js', function () {
    var brow = browserify(browserifyOpts)

    brow.bundle()
        .pipe(source('index.js'))
        .pipe(gulp.dest(folders.dist));
});

gulp.task('less', function () {
    var srcs = [
        blob(folders.src, 'css'),
        blob(folders.src, 'less')
    ];

    gulp.src(srcs)
        .pipe(less())
        .pipe(gulp.dest(folders.dist));
});

gulp.task('svg', function () {
    gulp.src(blob(folders.src, 'svg'))
        .pipe(newer(folders.dist))
        .pipe(gulp.dest(folders.dist));
});