var gulp = require('gulp'),
	changed = require('gulp-changed'),
	pug = require('gulp-pug'),
	minifyhtml = require('gulp-minify-html'),
	notify = require('gulp-notify'),
	sass = require('gulp-sass');

var config = {
	sassPath: './resources/sass',
	pugPath:  './resources/pug'
}

function css() {
	return gulp.src(config.sassPath + '/style.scss')
		.pipe(sass({
				outputStyle: 'compressed',
				includePaths: [
					'./resources/sass',
					'./node_modules/bootstrap-sass/assets/stylesheets',
					'./node_modules/@fortawesome/fontawesome-free/scss',
					'./node_modules/academicons/css'
				]
			})
			.on('error', notify.onError(function (error) {
				return "Error: " + error.message;
			}))
		)
		.pipe(gulp.dest('./build/assets/css'));
}

function html() {
	var src = config.pugPath + '/finals/**/*.pug',
		dst = './build';

	return gulp.src(src)
		.pipe(changed(dst, {extension: 'html'}))
		.pipe(pug({
			basedir: config.pugPath + '/include'
		}))
		.pipe(minifyhtml())
		.pipe(gulp.dest(dst));
}

function img() {
	return gulp.src('./resources/img/*')
		.pipe(gulp.dest('./build/assets/img'));
}

function pdf() {
	return gulp.src('./resources/pdf/*')
		.pipe(gulp.dest('./build/assets/pdf'));
}

function fonts() {
	gulp.src('./node_modules/@fortawesome/fontawesome-free/webfonts/fa-brands*')
		.pipe(gulp.dest('./build/assets/webfonts'));
	gulp.src('./node_modules/academicons/fonts/*')
		.pipe(gulp.dest('./build/assets/fonts'));
	return gulp.src('./resources/fonts/*')
		.pipe(gulp.dest('./build/assets/fonts'));
}

function watch() {
	gulp.watch(config.sassPath + '/**/*.scss', css);
	gulp.watch(config.pugPath + '/**/*.pug', html);
}

exports.css = css;
exports.html = html;
exports.img = img;
exports.pdf = pdf;
exports.fonts = fonts;
exports.watch = watch;

var build = gulp.parallel(css, html, img, pdf, fonts);
gulp.task('build', build);
gulp.task('default', build);