import base = require("./base");

declare var module: any;
declare function require(name:string);
declare var __filename: string;
declare var __dirname: string;

var gulp = require('gulp');
var path = require('path');
var $ = require('gulp-load-plugins')({lazy: true});
var _ = require('lodash');

class CompileHtml extends base.BaseTask {
  constructor() {
    super();
    return this;
  }

  static watch:boolean = true;
  static dependency:any = ['cleanHtml'];
  static taskName:string = 'compileHtml';
  static required:Array<string> = [
    'coffeekup',
    'gulp-jade',
    'gulp-insert',
    'gulp-prettify',
    'gulp-rename',
    'gulp-minify-html',
    'gulp-bytediff'
  ];

  static config(task, tasks, userOptions) {
    return {
      files: [
        './source/**/*.jade',
        './source/**/*.html',
        './source/**/*.html.coffee'
      ],
      jade:{
        config: {
          pretty: true
        },
        filter: /[.]jade$/
      },
      coffee: {
        filter: function(file) { return !!file.path.match(/[.]html.coffee$/); }
      },
      minify:{
        filter: /[.]min.html$/,
        config: {
          conditionals: true,
          spare:true
        }
      }
    };
  }

  static gulp(options, settings, task, tasks):void {
    CompileHtml.checkArguments(options, settings, task, tasks);

    var coffeekup = require('coffeekup');
    var gulpRunner = options.gulp || gulp;
    var config = settings;
    var _ref;

    if (!(config != null ? (_ref = config.files) != null ? _ref.length : void 0 : void 0)) {
      return;
    }

    function transformCoffeeKup(contents) {
      return coffeekup.render(contents);
    }

    return gulpRunner.src(config.files, {
        base: config.base
      })
      .pipe($.print())
        .pipe($.plumber())
        .pipe($["if"](config.jade.filter, $.jade(config.jade.config)))
        .pipe($["if"](config.coffee.filter, $.insert.transform(transformCoffeeKup)))
        .pipe($["if"](config.coffee.filter, $.rename(function (path) {
          if(!!path.basename.match(/[.]html$/)) {
              path.extname = '';
          }
        })))
        .pipe($.prettify({ indent_size: 2 }))
        .pipe($.bytediff.start())
        .pipe($["if"](config.minify.filter, $.minifyHtml(config.minify.config)))
        .pipe($.bytediff.stop())
        .pipe(gulp.dest(settings.dist || options.dist));
  }
}

export = CompileHtml;