'use strict';

var gulp = require('gulp'),
    minifycss = require('gulp-clean-css'),
    uglify = require('gulp-uglify'),
    concat = require('gulp-concat'),
    header = require('gulp-header'),
    buffer = require('vinyl-buffer'),
    pkg = require('./package.json'),
    debug = require('gulp-debug'),
    eslint = require('gulp-eslint'),
    browserify = require('browserify'),
    source = require('vinyl-source-stream'),
    rename = require('gulp-rename');

var banner = ['/**',
    ' * <%= pkg.name %> v<%= pkg.version %>',
    ' * Copyright <%= pkg.author %>',
    ' * @link <%= pkg.repository.url %>',
    ' * @license <%= pkg.license %>',
    ' */',
    ''].join('\n');

gulp.task('lint', function () {
    gulp.src('./src/js/**/*.js')
        .pipe(debug())
        .pipe(eslint())
        .pipe(eslint.format())
        .pipe(eslint.failAfterError());
});

function taskBrowserify(opts) {
    return browserify('./src/js/simplemde.js', opts)
        .bundle();
}

gulp.task('browserify:debug', ['lint'], function () {
    return taskBrowserify({debug: true, standalone: 'SimpleMDE'})
        .pipe(source('simplemde.debug.js'))
        .pipe(buffer())
        .pipe(header(banner, {pkg: pkg}))
        .pipe(gulp.dest('./debug/'));
});

gulp.task('browserify', ['lint'], function () {
    return taskBrowserify({standalone: 'SimpleMDE'})
        .pipe(source('simplemde.js'))
        .pipe(buffer())
        .pipe(header(banner, {pkg: pkg}))
        .pipe(gulp.dest('./debug/'));
});

gulp.task('scripts', ['browserify:debug', 'browserify', 'lint'], function () {
    var js_files = ['./debug/simplemde.js'];

    return gulp.src(js_files)
        .pipe(concat('simplemde.min.js'))
        .pipe(uglify())
        .pipe(buffer())
        .pipe(header(banner, {pkg: pkg}))
        .pipe(gulp.dest('./dist/'));
});

gulp.task('styles', function () {
    var css_files = [
        './node_modules/codemirror/lib/codemirror.css',
        './src/css/*.css',
        './node_modules/codemirror-spell-checker/src/css/spell-checker.css'
    ];

    return gulp.src(css_files)
        .pipe(concat('simplemde.css'))
        .pipe(buffer())
        .pipe(header(banner, {pkg: pkg}))
        .pipe(gulp.dest('./debug/'))
        .pipe(minifycss())
        .pipe(rename('simplemde.min.css'))
        .pipe(buffer())
        .pipe(header(banner, {pkg: pkg}))
        .pipe(gulp.dest('./dist/'));
});

gulp.task('default', ['scripts', 'styles']);