export default class loadingPanel {
  private loadingCount = 0;
  private baseDelay: number; // 延时时间，该时间内的请求将不会显示loading效果
  private allowLoading = true;

  constructor(delay = 0) {
    this.baseDelay = delay;
  }

  addLoadingPanel = (loadingStartFn: () => void) => {
    if (this.allowLoading) {
      this.loadingCount++;
      if (this.loadingCount > 0) {
        loadingStartFn();
      }
    }
  };

  decLoadingPanel = (loadingEndFn: () => void, immediately = false) => {
    if (this.baseDelay > 0) {
      this.allowLoading = false;
      setTimeout(() => {
        this.allowLoading = true;
      }, this.baseDelay);
    }

    this.loadingCount--;
    if (immediately) {
      this.loadingCount = 0;
    }
    if (this.loadingCount < 0) {
      this.loadingCount = 0;
    }
    if (this.loadingCount === 0) {
      loadingEndFn();
    }
  };
}