define(['Vue'], function (Vue) {
  Vue.appendHTML = function (text) {
    document.body.insertAdjacentHTML('beforeEnd', text);
  };
  var style;
  var doc = document;
  Vue.appendCSS = function (text) {
    text = text + " ";
    if (!style) {
      var head = doc.getElementsByTagName("head")[0]; 
      var elms = head.getElementsByTagName("style"); 
      if (elms.length == 0) {
        if (doc.createStyleSheet) {
          doc.createStyleSheet(); 
        } else { 
          var tmp = doc.createElement('style');
          tmp.setAttribute("type", "text/css"); 
          head.appendChild(tmp); 
        }
        elms[0].setAttribute("media", "screen"); 
      } 
      style = elms[0];
    }
    if (style.styleSheet) {
      style.styleSheet.cssText += text; 
    } else if(doc.getBoxObjectFor) { 
      style.innerHTML += text;
    } else { 
      style.appendChild(doc.createTextNode(text)) 
    } 
  };
　　
});

var through = require('through2');
var gutil = require('gulp-util');

var regTpl = /<template>([\s\S]+?)<\/template>/;
var regStyle = /<style>([\s\S]+?)<\/style>/; 
var regJs = /<script>([\s\S]+?)<\/script>/; 
var reg = [/'/g, /\n/g, /([^\\]+)\.vue$/];

var vueWrite = function (file, str) {
  var match = file.path.match(reg[2]);
  var id = "vue-tpl-" + match[1];
  var appendJs = "";
  var res = "";
  str = str.replace(regTpl, function (t, h) {
    appendJs += "\tVue.appendHTML(\n'<template id=\"" + id + "\">" + h.replace(reg[0], "\\'").replace(reg[1], "\\\n") + "<\/template>');\n";
    return "";
  }).replace(regStyle, function (t, h) {
    appendJs += "\tVue.appendCSS(\n'" + h.replace(reg[0], "\\'").trim().replace(reg[1], "\\\n") + "');\n"
    return "";
  }).replace(regJs, function (t, h) {
    res = "define(function (require) {\n\trequire('VueCommon'); \n\tvar Vue = require('Vue');\n\tvar exports;\n" + appendJs + h + ";\n\texports.template = '#" + id + "';\n\texports = Vue.extend(exports);\n\tVue.component('" + match[1] + "', exports);\n\treturn exports;\n});"
    return ;
  })
  return res;
};

module.exports = function(opt){

 function run (file, encoding, callback) {
  if (file.isNull()) {
   return callback(null, file);
  }

  if (file.isStream()) {
   return callback(new gutil.PluginError('gulp-vue', 'doesn\'t support Streams'));
  }

  file.contents = new Buffer(vueWrite(file, file.contents.toString()));
  file.path = file.path + '.js';
  callback(null, file);
 }

 return through.obj(run);
}