/**
 * 定位模版的行为
 * @return {[type]} [description]
 */

module.exports = Behavior(function(){
  'use strict';
  return {
    run: function(templateFile){
      if (!isFile(templateFile)) {
        return this.parseTemplateFile(templateFile);
      }
    },
    /**
     * 解析模版文件
     * @param  {[type]} templateFile [description]
     * @return {[type]}              [description]
     */
    parseTemplateFile: function(templateFile){
      templateFile = templateFile || '';
      if (!templateFile) {
        templateFile = [
          VIEW_PATH, '/', this.http.group, '/',
          this.http.controller.toLowerCase(),
          C('tpl_file_depr'),
          this.http.action.toLowerCase(),
          C('tpl_file_suffix')
        ].join('');
      }else if(templateFile.indexOf('/') > -1){
        //自动追加VIEW_PATH前缀
        if (templateFile.indexOf('/') !== 0) {
          templateFile = VIEW_PATH + '/' + templateFile;
        }
      }else if(templateFile.indexOf(C('tpl_file_suffix')) === -1){
        var path = templateFile.split(':');
        var action = path.pop();
        var controller = path.pop() || this.http.controller.toLowerCase();
        var group = ucfirst(path.pop()) || this.http.group;
        templateFile = [
          VIEW_PATH, '/', group, '/',
          controller, 
          C('tpl_file_depr'),
          action,
          C('tpl_file_suffix')
        ].join('');
      }
      if (!isFile(templateFile)) {
        console.log(templateFile + ' is not exist', this.http);
        return false;
      }
      return templateFile;
    }
  };
});