'use strict';

// 引入nodejs库
let path = require('path');
let fs   = require('fs');

// 引入 gulp
let gulp       = require('gulp');
let nwwatch    = require('nswatch');
let minifycss  = require('gulp-clean-css');
let sass       = require('gulp-sass');
let del        = require('del');
let sourcemaps = require('gulp-sourcemaps');
//引入gulp和gulp插件

// 开发模式
let distRoot = "dist/public";
let srcRoot  = "public";

let option = {base: `${srcRoot}`};

gulp.task('build:style', function () {

    gulp.src([
        `${srcRoot}/css/**/*.scss`,
        `!${srcRoot}/css/**/_*.scss`], option)
        .pipe(sourcemaps.init())
        .pipe(sass())
        // .pipe(postcss([autoprefixer]))
        .pipe(sourcemaps.write({includeContent: false, sourceRoot: `/${srcRoot}`}))
        .pipe(gulp.dest(distRoot));

    // XXX 拷贝文件夹
    return gulp.src([`${srcRoot}/css/**/*.css`],
        option)
        .pipe(sourcemaps.init())
        .pipe(sourcemaps.write({includeContent: false, sourceRoot: `/${srcRoot}`}))
        .pipe(gulp.dest(distRoot));
});

/**
 * 静态资源文件
 */
gulp.task('build:assets', function () {

    // XXX 拷贝文件夹
    return gulp.src([
            `${srcRoot}/**/*.?(png|jpg|gif|svg|ico)`,
            `${srcRoot}/libs/**/*`,
        ],
        option)
        .pipe(gulp.dest(distRoot));
});

/**
 * 静态资源文件
 */
gulp.task('build:html', function () {
    let paths = [`${srcRoot}/**/*.html`];
    // XXX 拷贝文件夹
    return gulp.src(paths, option)
        .pipe(gulp.dest(distRoot));
});


/////////////////////// develop //////////////////////////////////////

gulp.task('build', ['build:assets', 'build:html', 'build:style']);

// 监听测试页面
gulp.task('watch', function () {
    gulp.watch([
        '${srcRoot}/**/*.?(png|jpg|gif|svg)',
        '${srcRoot}/libs/**/*',
    ], ['build:assets']);

    gulp.watch([
        `${srcRoot}/**/*.html`
    ], ['build:html']);

    gulp.watch([`${srcRoot}/css/**/*.?(css|scss)`], ['build:style']);

    nwwatch("webpack_file_watch.js", ['js-watch']);
});

gulp.task('default', function () {
    console.log("hello world");
});

gulp.task('clean', del.bind(null, [distRoot, './dist/template', './dist/hash', './dist/temp', './dist/public', '.happypack']));