var gulp = require("gulp"),
    babel = require("gulp-babel"),
    concat = require("gulp-concat"),
    minify = require("gulp-minify"),
    rename = require("gulp-rename"),
    watch = require("gulp-watch"),
    plumber = require("gulp-plumber"),
    runSequence = require("run-sequence"),
    browserSync = require("browser-sync"),
    del = require("del");

gulp.task("default", (cb) => {
    runSequence("engine", "game", "copy:lib", "copy:shaders", "copy:assets", "copy:html", "copy:css", "webserver", "watch", cb);
});

gulp.task("watch", () => {
    gulp.watch("app/js/engine/**", ["engine"]);
    gulp.watch("app/js/game/**", ["game"]);
    gulp.watch("app/lib/**", ["copy:lib"]);
    gulp.watch("app/js/shaders/*.glsl", ["copy:shaders"]);
    gulp.watch("app/assets/**", ["copy:assets"]);
    gulp.watch("app/index.html", ["copy:html"]);
    gulp.watch("app/css/**", ["copy:css"]);
});

gulp.task("webserver", () => {
    var _browser_URL = "./dist",
        port = 80,
        host = "localhost";

    browserSync({
        server: _browser_URL,
        port: port,
        host: host
    });
});

gulp.task("engine", () => {
    return gulp.src("app/js/engine/**")
        .pipe(plumber())
        // .pipe(babel({ presets: ["es2015"] }))
        .pipe(gulp.dest("dist/js/engine"))
        .pipe(browserSync.reload({ stream: true }));
});

gulp.task("game", () => {
    return gulp.src("app/js/game/**")
        .pipe(plumber())
        // .pipe(babel({ presets: ["es2015"] }))
        .pipe(gulp.dest("dist/js/game"))
        .pipe(browserSync.reload({ stream: true }));
});

gulp.task("copy:lib", () => {
    gulp.src("app/lib/**")
        .pipe(gulp.dest("dist/lib"))
        .pipe(browserSync.reload({ stream: true }));
});

gulp.task("copy:shaders", () => {
    gulp.src("app/js/shaders/*.glsl")
        .pipe(gulp.dest("dist/shaders"))
        .pipe(browserSync.reload({ stream: true }));
});

gulp.task("copy:assets", () => {
    gulp.src("app/assets/**")
        .pipe(gulp.dest("dist/assets"))
        .pipe(browserSync.reload({ stream: true }));
});

gulp.task("copy:html", () => {
    gulp.src("app/index.html")
        .pipe(plumber())
        .pipe(gulp.dest("dist"))
        .pipe(browserSync.reload({ stream: true }));
});

gulp.task("copy:css", () => {
    gulp.src("app/css/**")
        .pipe(gulp.dest("dist/css"))
        .pipe(browserSync.reload({ stream: true }));
});

gulp.task("clean", function(cb) {
    console.log("Cleaning");
    del([
        "dist/**"
    ], cb);
});


////////////////////
//                //
//   BUILD TASK   //
//                //
////////////////////

gulp.task("build", (cb) => {
    runSequence("build:engine", "build:game", "build:lib", "build:shaders", "build:assets", "build:html", "build:css", cb);
});

gulp.task("build:engine", () => {
    return gulp.src(["app/js/engine/Cow.js",
                    "app/js/engine/gl.js",
                    "app/js/engine/System.js",
                    "app/js/engine/Entities.js",
                    "app/js/engine/Transform.js",
                    "app/js/engine/Camera.js",
                    "app/js/engine/Collisions.js",
                    "app/js/engine/Loader.js",
                    "app/js/engine/Render.js",
                    "app/js/engine/Input.js",
                    "app/js/engine/Network.js",
                    "app/js/engine/Scenes.js",
                    "app/js/engine/Scene.js",
                    "app/js/engine/Component.js",
                    "app/js/engine/Entity.js",
                    "app/js/engine/defaultComponents/**"])
        .pipe(plumber())
        .pipe(concat("Cow.js"))
        .pipe(babel({ presets: ["es2015"] }))
        .pipe(minify())
        .pipe(gulp.dest("build/js"));
});

gulp.task("build:game", () => {
    return gulp.src("app/js/game/**/*.js")
        .pipe(plumber())
        .pipe(concat("game.js"))
        .pipe(babel({ presets: ["es2015"] }))
        .pipe(minify())
        .pipe(gulp.dest("build/js"));
});

gulp.task("build:shaders", () => {
    return gulp.src("app/js/shaders/*.glsl")
        .pipe(plumber())
        .pipe(gulp.dest("build/shaders"));
});

gulp.task("build:lib", () => {
    return gulp.src("app/lib/**")
        .pipe(plumber())
        .pipe(gulp.dest("build/lib"));
});

gulp.task("build:assets", () => {
    return gulp.src("app/assets/**")
        .pipe(plumber())
        .pipe(gulp.dest("build/assets"));
});

gulp.task("build:html", () => {
    return gulp.src("app/index-build.html")
        .pipe(plumber())
        .pipe(rename("index.html"))
        .pipe(gulp.dest("build"));
});

gulp.task("build:css", () => {
    return gulp.src("app/css/*.css")
        .pipe(plumber())
        .pipe(gulp.dest("build/css"));
});