var publicDir = '../../vipstyle/frozenui'; //发布目录
var pubCode = '../../frozenui'; //共用组件平台

module.exports = function(grunt) {
    // 自动加载 grunt 任务
    require('load-grunt-tasks')(grunt);

    // 统计 grunt 任务耗时
    require('time-grunt')(grunt);

    // 配置
    grunt.initConfig({
        pkg: grunt.file.readJSON('package.json'),
        imagemin: {
            /* 压缩图片大小 */
            dist: {
                options: {
                    optimizationLevel: 3 //定义 PNG 图片优化水平
                },
                files: [{
                    expand: true,
                    cwd: 'img/',
                    src: ['**/*.{png,jpg,jpeg}'], // 优化 img 目录下所有 png/jpg/jpeg 图片
                    dest: '_dist/img' // 优化后的图片保存位置
                }]
            }
        },
        autoprefixer: {
            options: {
                diff: false,
                browsers: ['last 2 versions','ios 5','android 2.3']
            },

            // prefix all files
            multiple_files: {
                expand: true,
                src: ['css/*.css', 'css/**/*.css']
            }
        },
        sass: {
            dist: {
                expand: true,
                flatten: true,
                cwd: 'sass',
                src: ['**/*.scss'],
                dest: 'css/',
                ext: '.css',
                "sourcemap=none": ''
            }
            
        },
        cssmin: {
            dist: {
                expand: true,
                cwd: 'css/',
                src: ['**/*.css'],
                dest: '_dist/css/'
            }
        },
        uglify: {
            dist: {
                files: [{
                    expand: true,
                    flatten: true,
                    cwd: 'js',
                    src: '**/*.js',
                    dest: '_dist/js/',
                    ext: '.js'
                }, {
                    expand: true,
                    cwd: 'lib/',
                    src: '**/*.js',
                    dest: '_dist/lib/'
                }]
            }
        },
        jshint: {
            files: ['Gruntfile.js', 'js/**/*.js', '!js/frozen.js'],
            options: {
                // 允许多行字符拼接, 在 *.tpl 中常用
                "multistr": true,
                // 允许使用类似这种表达式 $.isFunction( fn ) && fn();
                "expr": true,
                // 允许使用类似这种函数  new Function("obj","return 123")
                "evil": true
            }
        },
        concat: {
            zepto: {
                src: [
                    'lib/zeptojs/zepto.js',
                    'lib/zeptojs/event.js',
                    'lib/zeptojs/touch.js', 
                    'lib/zeptojs/ajax.js',
                    'lib/zeptojs/form.js'
                ],
                dest: 'lib/zepto.min.js'
            },
            js: {
                src: [
                    'js/core/core.js',
                    'js/component/*.js'
                ],
                dest: 'js/frozen.js'
            }
        },
        copy: {
            font:{
                expand: true,
                src: 'font/**/*',
                dest: '_dist'
            },
            cssdebug:{
                expand: true,
                cwd: 'css',
                src: '*.css',
                dest: '_dist/css-debug'
            },
            demo:{
                expand: true,
                src: 'demo/*.html',
                dest: '<%=pkg.version%>'
            },
            sass: {
                expand: true,
                src: 'sass/**/*',
                dest: '<%=pkg.version%>'
            },
            dist: {
                expand: true,
                cwd: '_dist',
                src: ['font/**/*','img/*.{png,jpg,jpeg}',
                'css/basic.css','css/frozen.css',
                'js/frozen.js','lib/zepto.min.js'],
                dest: 'dist'
            },
            main: {
                expand: true,
                cwd: '_dist',
                src: '**/*',
                dest: '<%=pkg.version%>'
            },
            vipstyle:{
                expand: true,
                src: '<%=pkg.version%>/**/*',
                dest: publicDir
            },
            zip:{
                expand: true,
                cwd: publicDir + '/<%=pkg.version%>',
                src: ['img/**/*',
                'css/basic.css','css/global.css'],
                dest: publicDir + '/<%=pkg.version%>/i.gtimg.cn/vipstyle/frozenui/<%=pkg.version%>'
            },
            pub: {
                expand: true,
                cwd: publicDir + '/<%=pkg.version%>',
                src: '**/*',
                dest: pubCode + '/<%=pkg.version%>'
            }
        },
        replace:{
            img: {
                src: ['<%=pkg.version%>/css/**/*.css','<%=pkg.version%>/sass/**/*.scss'] ,
                overwrite: true,
                replacements: [{
                    from: /\.*\.\/img/g, 
                    to: function () {
                        return 'http://i.gtimg.cn/vipstyle/frozenui/<%=pkg.version%>/img';
                    }
                },
                {
                    from: /png\)/g, 
                    to: function () {
                        return 'png?_bid=2134&max_age=31536000)';
                    }
                },
                {
                    from: /\.*\.\/font/g, 
                    to: function () {
                        return 'http://i.gtimg.cn/vipstyle/frozenui/<%=pkg.version%>/font';
                    }
                },
                {
                    from: /ttf\)/g, 
                    to: function () {
                        return 'ttf?_bid=2134&max_age=31536000)';
                    }
                }]

            }
        },
        includereplace: {
            html: {
                expand: true,
                cwd: 'demo/src',
                src: ['*.html'],
                dest: 'demo/'

            }
        },
        jsdoc: {
            doc: {
                src: ['js/**/*.js', '!js/baymax.js'],
                options: {
                    destination: 'jsdoc'
                }
            }
        },
        compress: {
            main: {
                cwd: publicDir + '/<%=pkg.version%>',
                options: {
                    archive: publicDir + '/<%=pkg.version%>/i.gtimg.cn.zip'
                },
                expand: true,
                src: ['i.gtimg.cn/**']
            }
        },
        watch: {
            demo: {
                files: [
                    'demo/**/*.html'
                ],
                tasks: ['includereplace']
            },
            css: {
                files: [
                    'sass/**/*.scss'
                ],
                tasks: ['sass', 'cssmin']
            },
            js: {
                files: ['js/**/*.js', '!js/frozen.js'],
                tasks: ['concat:js', 'jsdoc']
            }
        }
    });
    grunt.registerTask('copystatic',['copy:font','copy:cssdebug','copy:sass','copy:demo','copy:dist','copy:main']);
    // 默认任务
    grunt.registerTask('default', [
        'sass',
        'autoprefixer',
        'cssmin',
        'imagemin',
        'concat:zepto',
        'concat:js',
        'uglify',
        'copystatic',
        'includereplace',
        'watch'
    ]);
    grunt.registerTask('deploy', [
        'replace',
        'copy:vipstyle',
        'copy:zip', 
        'compress',
        'copy:pub'
             
    ]);
    // 根据 docs 的代码片段生成 demo 到 demo/*.html
    grunt.registerTask('demo', ['includereplace']);
};