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

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

var stylusCompile = require('./streams/stylusCompile');

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

  static watch:boolean = true;
  static dependency:any = ['cleanCss'];
  static taskName:string = 'compileCss';
  static required:Array<string> = [
    'gulp-sourcemaps',
    'gulp-stylus',
    'gulp-less',
    'gulp-csso'
  ];


  static config(task, tasks, userOptions) {
    return {
      watch: ['compileStylus'],
      files: [
        './source/**/*.styl',
        './source/**/*.css',
        './source/**/*.less'
      ],
      base: 'source/',
      csso: {
        filter: /[.]min.*$/,
        options: {}
      }

    };
  }

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

    var stream = gulp.src(settings.files, {
      base: settings.base
    });

    stream = stylusCompile(stream);

    return stream
      .pipe($.print())
      .pipe($.plumber())
      .pipe($["if"](settings.csso.filter, $.csso(settings.csso.options)))
      .pipe(gulp.dest(settings.dist || options.dist));

  }

}

export = CompileCss;