"use strict";

var gulp = require("gulp"),
	gutil = require("gulp-util"),
	plumber = require("gulp-plumber"),
	bower = require("gulp-bower"),
	peg = require("gulp-peg"),
	deploy = require("gulp-gh-pages"),
	babel = require("gulp-babel"),
	rename = require("gulp-rename"),
	uglify = require("gulp-uglify"),
	minifyCss = require("gulp-minify-css"),
	minifyHtml = require("gulp-minify-html"),
	concat = require("gulp-concat"),
	useref = require("gulp-useref"),
	gulpif = require("gulp-if"),
	ngAnnotate = require("gulp-ng-annotate"),
	ngHtml2Js = require("gulp-ng-html2js"),
	errLogger = gutil.log.bind(gutil, gutil.colors.red("Error: ")),
	opts = {
		buildDir: "build",
	};


gulp
.task("pre", function() {
	gulp.src(["src/web/**/*.html", "!src/web/index.html", "!src/web/bower_components/**/*"])
	.pipe(plumber(errLogger))
	.pipe(minifyHtml())
	.pipe(ngHtml2Js({
		moduleName: function(file) {
			var pathParts = file.path.split("/");
			var prefix = pathParts[pathParts.length - 3];
			var moduleName = pathParts[pathParts.length - 2];
			return "modellang-ide." + (prefix === "pages" ? "" : prefix + ".") + moduleName;
		}
	}))
	.pipe(concat("templates.min.js"))
	.pipe(gulp.dest(opts.buildDir + "/web"));

	return gulp.src("src/web/assets/**/*")
	.pipe(plumber(errLogger))
	.pipe(babel())
	.pipe(uglify())
	.pipe(gulp.dest(opts.buildDir + "/web/assets"));
})

.task("bower", function() {
	return bower();
})

.task("concat", ["pre", "bower"], function() {
	var assets = useref.assets();

	return gulp.src("src/web/index.html")
	.pipe(plumber(errLogger))
	.pipe(assets)
	.pipe(gulpif("index.min.js", babel({blacklist: ["useStrict"]})))
	.pipe(gulpif("*.css", minifyCss()))
	.pipe(assets.restore())
	.pipe(useref())
	.pipe(gulp.dest(opts.buildDir + "/web"));
})

.task("parser", function() {
	return gulp.src("src/lib/parser/modellang.pegjs")
	.pipe(plumber(errLogger))
	.pipe(peg({
		exportVar: "modellangParser"
	}))
	.pipe(babel({modules: "umd", blacklist: ["useStrict"]}))
	.pipe(gulp.dest(opts.buildDir + "/lib/parser"))
	.pipe(rename("modellang-parser.js"))
	.pipe(uglify())
	.pipe(gulp.dest(opts.buildDir + "/web/assets/scripts"));
})

.task("generator", function() {
	return gulp.src("src/lib/generator/modellang.es6")
	.pipe(plumber(errLogger))
	.pipe(babel())
	.pipe(gulp.dest(opts.buildDir + "/lib/generator"))
	.pipe(rename("modellang-gen.js"))
	.pipe(uglify())
	.pipe(gulp.dest(opts.buildDir + "/web/assets/scripts"));
})

.task("default", ["parser", "generator"], function() {
	return;
})

.task("build", ["concat", "parser", "generator"], function() {
	return gulp.src(opts.buildDir + "/web/{index,templates}.min.js")
	.pipe(plumber(errLogger))
	.pipe(concat("index.min.js"))
	.pipe(ngAnnotate())
	.pipe(uglify())
	.pipe(gulp.dest(opts.buildDir + "/web"));
})

.task("deploy", ["build"], function() {
	return gulp.src(opts.buildDir + "/web/**/*")
	.pipe(deploy({
		push: gutil.env.nopush ? false : true,
	}));
})
;