const {src, dest, parallel} = require('gulp');
const uglify = require('gulp-uglify');
const rename = require('gulp-rename');
const concat = require('gulp-concat');

function vendors() {
    return src([
        './lib/3rdparty/jquery.js',
        './lib/3rdparty/optimal-select.js',
        './lib/3rdparty/hammer.js',
        './lib/3rdparty/hammer.propagating.js',
        './lib/3rdparty/d3/d3.js',
        './lib/3rdparty/d3/d3-selection-multi.js',
        './lib/3rdparty/highlight/**/*.js',
        './lib/3rdparty/pixi/pixi.js',
        './lib/3rdparty/pixi/lib/crn_decomp.js',
        './lib/3rdparty/pixi/pixi-compressed-textures.js',
        './lib/3rdparty/pixi/pixi-filters.js',
        './lib/3rdparty/pixi/pixi-particles.js',
        './lib/3rdparty/pixi/pixi-projection.js',
        './lib/3rdparty/greensock/src/uncompressed/**/*.js',
        './lib/3rdparty/convertPointFromPageToNode.js',
    ], {sourcemaps: false})
        .pipe(concat('iwmlib.3rdparty.js'))
        .pipe(dest('dist', {sourcemaps: false}))
        .pipe(rename({extname: '.min.js'}))
        .pipe(uglify())
        .pipe(dest('dist', {sourcemaps: false}))
}

function preload() {
    return src([
        './lib/3rdparty/highlight/**/*.js',
        './lib/3rdparty/greensock/src/uncompressed/plugins/*.js',
        './lib/3rdparty/greensock/src/uncompressed/TweenLite.js',
        './lib/3rdparty/convertPointFromPageToNode.js',
    ], {sourcemaps: false})
        .pipe(concat('iwmlib.3rdparty.preload.js'))
        .pipe(dest('dist', {sourcemaps: false}))
        .pipe(rename({extname: '.min.js'}))
        .pipe(uglify())
        .pipe(dest('dist', {sourcemaps: false}))
}

exports.default = parallel(vendors, preload);