import { OnInit } from '@angular/core';

export interface IPagination {
  page: number;
  pageSize: number;
  total: number;
}

// // tslint:disable-next-line:interface-name
// export interface BixiPaginationListDirective {
//   onReset?(): void;
// }

export const PAGE_SIZE_OPTIONS = [10, 25, 50, 75, 100];

export class BixiPaginationListBase implements OnInit {
  pagination = {
    page: 1,
    pageSize: 10,
    total: 0
  };
  loading = false;

  ngOnInit() {
    this.loading = true;
    if (this.onReset) {
      this.onReset();
    }
    this.onSearch();
  }

  /**
   *  需要实现的查询方法
   */
  onSearch(): void {
    return;
  }

  onReset(): void {
    return;
  }

  /**
   *  重置分页，该方法会驱动一次查询
   */
  onResetPaginationAndSearch() {
    this.onResetPagination();
    this.onSearch();
  }

  /**
   *  重置分页/搜索，该方法会驱动一次查询
   */
  onResetAndSearch() {
    if (this.onReset) {
      this.onReset();
    }
    this.onResetPaginationAndSearch();
  }

  /**
   *  重置分页，该方法会驱动一次查询
   */
  onResetPagination() {
    this.pagination = {
      page: 1,
      pageSize: this.pagination.pageSize,
      total: 0
    };
  }

  /**
   *  页数变化，该方法会驱动一次查询
   */
  onPageChange(page: number = 1) {
    this.pagination.page = page;
    this.onSearch();
  }

  /**
   *  分页条数变化，该方法会驱动一次查询
   */
  onPageSizeChange(pageSize: number) {
    this.pagination = {
      page: 1,
      pageSize,
      total: 0
    };
    this.onSearch();
  }
}