import { HandleClass } from './behavior';
class HandleBehavior {
  constructor(props) {
    this.formData = props.formData || null;
  }
  initBehavior = (formData) => {
    if (!this.formData) {
      this.formData = formData
    }
    if (!this.formData) return
    this.hiddenFilds();
    this.formData.map(item => {
      if (!item.behaviors || !Array.isArray(item.behaviors) || item.behaviors.length === 0) return;
      const value = this.handleFormaterValue(item.value, item);
      this.handleBehavior({ currentValue: value, componentData: item })
    })
    return this;
  }
  getFormData = () => {
    return this.formData

  }
  handleFormaterValue = (value, item) => {
    if (!value) return value;
    if (Array.isArray(value) && value.length) {
      return value[0].value;
    }
    if (typeof value === 'object' && value) {
      return value.value;
    }
    return value;
  }
  /*
 * 处理行为方法
 */
  handleBehavior = ({ currentValue, componentData = {}, eventType, formData }) => {
    this.formData = formData || this.formData;
    const value = this.handleFormaterValue((currentValue || componentData.value), componentData);
    const events = componentData.events || []
    const behaviors = componentData.behaviors || [];
    const changeEvents = eventType ? events.filter(ls => ls.eventValue === 'onChange') : events;
    changeEvents.forEach(event => {
      this.onChangeBehavior({ event, value, componentData, behaviors })
    });

  }
  onChangeBehavior = ({ event, value, componentData, behaviors }) => {
    if (!event.behaviors || !Array.isArray(event.behaviors)) return;
    event.behaviors.forEach(item => {
      this.handleBehaviorType({ value, behavior: item, componentData, behaviors });
    });
  }
  handleBehaviorType = ({ value, behavior, behaviors, componentData }) => {
    const behaviorInstance = HandleClass[behavior.behaviorValue];
    if (!behaviorInstance || !behaviorInstance.fun) return;
    let formData = this.formData;
    this.formData = behaviorInstance.fun({ value, behavior, behaviors, formData, componentData }, this.resertValueCallback);
  }
  resertValueCallback = ({ key, value }) => {
    const componentData = this.formData.find(ls => ls.name === key) || {};
    this.handleBehavior({ currentValue: value, componentData })
  }
  hiddenFilds = () => {
    this.formData = this.formData.filter(item => item.type !== 'hidden')
  }
}
export default HandleBehavior