var gulp = require('gulp');
const { series, parallel } = require('gulp');
var ts = require('gulp-typescript');
var sourcemaps = require('gulp-sourcemaps');
var gulpif = require('gulp-if');
var tsProject = ts.createProject('tsconfig.json');
var del = require('del');

builder = function (production = true) {
    return parallel(
        function () {
            return tsProject
                .src()
                .pipe(gulpif(!production, sourcemaps.init()))
                .pipe(tsProject())
                .js.pipe(gulpif(!production, sourcemaps.write()))
                .pipe(gulp.dest('dist'));
        },
        function () {
            return gulp.src('src/**/*.scss').pipe(gulp.dest('dist'));
        }
    );
};

gulp.task('clean', function () {
    return del('dist');
});

gulp.task('build', builder(false));
gulp.task('build:production', builder(true));