import {validatenull} from "@/util/validate";
import {findArray} from "@/util/util";

/**
 * 按钮的基础服务
 */

/**
 * 替换文本中的${xxx}
 * @param text 文本
 * @param dataStore 选择的数据
 * @param sourceData 来源数据
 * @returns 替换后的值,字符串
 */
export const replaceFreeMarker = (text,dataStore,sourceData) => {
  //替换表达式
  if (!sourceData) {
    sourceData = {};
  }
  if (!dataStore) {
    dataStore = [];
  }
  let replaceData = dataStore.length > 0 ? dataStore[0] : {};
  if (text && text.indexOf("${") > -1 && text.indexOf("}")) {
    //js只能使用${xxx}这种的方式
    let reg = "root.${";
    while (text.indexOf(reg) > -1) {
      let temp = text.substring(0, text.indexOf(reg));
      let field = text.substring(text.indexOf(reg) + reg.length, text.indexOf("}"));
      let end = text.substring(text.indexOf("}") + 1);
      field = replaceData[field] || sourceData[field] || '';
      text = temp + field + end;
    }
    reg = "sourceData.${";
    while (text.indexOf(reg) > -1) {
      let temp = text.substring(0, text.indexOf(reg));
      let field = text.substring(text.indexOf(reg) + reg.length, text.indexOf("}"));
      let end = text.substring(text.indexOf("}") + 1);
      field = replaceData[field] || sourceData[field] || '';
      text = temp + field + end;
    }
    reg = "${";
    while (text.indexOf(reg) > -1) {
      let temp = text.substring(0, text.indexOf(reg));
      let field = text.substring(text.indexOf(reg) + reg.length, text.indexOf("}"));
      let end = text.substring(text.indexOf("}") + 1);
      field = replaceData[field] || sourceData[field] || '';
      text = temp + field + end;
    }
  }
  return text;
};

/**
 * 参数转换为小写
 * @param paramsVOs 参数
 * @returns 小写后的参数对象
 */
export const paramLow = (paramsVOs) => {
  //
  if (!paramsVOs) {
    paramsVOs = {};
  }
  var params = {};
  for (var key in paramsVOs) {
    params[key.toLowerCase()] = paramsVOs[key];
  }
  return params;
};
/**
 * 执行前置事件
 * @param options 按钮的配置信息，前置事件里配置的参数会替换这个里的参数的信息
 * @param buttonTarget 按钮js所在的对象
 * @param callback 回调，如果存在前置事件，会在执行完成后执行回调，否则直接回调
 * @param preEventName 前置事件名称，默认beforeevent
 */
export const callPreEvent = (options,buttonTarget,callback,preEventName) => {
  const params = paramLow(options.paramVOS);
  options.paramVOS = params;
  let beforeEvent = params[preEventName || 'beforeevent'];
  if(beforeEvent) {
    let buttonParse = parseEventByUrl(beforeEvent,options,true);
    buttonParse.options.callback = callback;
    if(validatenull(buttonParse)){
      buttonTarget[buttonParse.methodName](buttonParse);
    }else{
      layui.use(buttonParse.jsPath,function () {
        layui[buttonParse.jsPath][buttonParse.methodName](options);
      });
    }
  }else{
    if(callback){
      callback(options);
    }
  }
};
/**
 * 执行后置时间
 * @param options 按钮的配置信息，后置事件里配置的参数会替换这个里的参数的信息
 * @param buttonTarget 按钮Js所在的对象
 */
export const callPostEvent = (options,buttonTarget,callback,postEventName)=>{
  const params = paramLow(options.paramVOS);
  options.paramVOS = params;
  var afterEvent = params[postEventName || 'afterevent'];
  if(afterEvent) {
    var buttonParse = parseEventByUrl(afterEvent,options,false);
    if(validatenull(buttonParse)){
      buttonTarget[buttonParse.methodName](buttonParse);
    }else{
      layui.use(buttonParse.jsPath,function () {
        layui[buttonParse.jsPath][buttonParse.methodName](options);
      });
    }
  }else{
    if(callback){
      callback(options);
    }
  }
};
/**
 * 使用url获取事件的信息
 * @param url 路径,格式如jsPath#methodName?param=aaa&param1=bbb
 * @param options 按钮的配置信息，会自动覆盖相同属性的参数
 * @param isBefore 是否为前置事件，否则为后置
 * @returns {{jsPath: js的路径, options: 按钮的配置信息, methodName: (string)方法的名字}}
 */
export const parseEventByUrl = (url,options,isBefore) => {
  //根据配置格式化事件
  var jsPath = url;
  var methodName = isBefore?"doBefore":"doAfter";
  var params = {};
  if (url.indexOf("?")) {
    var temp = url.substring(0, url.indexOf("?"));
    if (temp.indexOf("#") > -1) {
      var array = temp.split("#");
      if(array.length == 1){
        jsPath = array[0];
      }else{
        jsPath = array[0];
        methodName = array[1];
      }
    }else{
      jsPath = temp;
    }
    var paramArray = url.substring(url.indexOf("?") + 1).split("&");
    layui.each(paramArray, function (_index, _item) {
      if (_item.indexOf("=") < 0) {
        this.$message.error(isBefore?"前置事件":"后置事件" + "的参数配置错误，需要要xxx=yyy&zzz=a的方式");
        return true;
      }
      params[_item.split("=")[0]] = _item.split("=")[1];
    });
  }else{
    if (url.indexOf("#") > -1) {
      var array = url.split("#");
      if(array.length == 1){
        jsPath = array[0];
      }else{
        jsPath = array[0];
        methodName = array[1];
      }
    }else{
      jsPath = url;
    }
  }
  for (var key in params) {
    options.paramVOS[key.toLowerCase()] = params[key];
  }
  return {
    jsPath:jsPath,
    methodName:methodName,
    options:options
  };
};