import { RdLib } from '../../base/rdLib';
import { RdComponent } from '../../base/rdComponent';

export interface IProviderContent {
  params: any;
  response: any;
  proxy: any;
  items: Array<any>;
  state: {
    serviceCalled: boolean;
    waitingForResponse: boolean;
    responseIsRecieved: boolean;
    serviceCallFailed: boolean;
  };
  paging: {
    currentPage: number;
    pageSize: any
    totalItemCount: number;
    totalPageCount: number;
  };
}

export abstract class ServiceProviderPagingBase extends RdComponent {

  content: IProviderContent = {
    params: null,
    response: null,
    proxy: null,
    items: [],
    state: {
      serviceCalled: false,
      waitingForResponse: false,
      responseIsRecieved: false,
      serviceCallFailed: false
    },
    paging: {
      currentPage: 1,
      pageSize: null,
      totalItemCount: null,
      totalPageCount: null
    }
  };

  protected callState(params, proxy) {
    this.content.params = RdLib.objectOperations.deepCopy(params);
    this.content.proxy = proxy;
    this.content.response = null;
    this.content.state = {
      serviceCalled: true,
      waitingForResponse: true,
      responseIsRecieved: false,
      serviceCallFailed: false
    };
  }

  protected successState(response) {
    this.content.response = response;
    this.content.state = {
      serviceCalled: true,
      waitingForResponse: false,
      responseIsRecieved: true,
      serviceCallFailed: false
    };
  }

  protected errorState() {
    this.content.response = null;
    this.content.items = [];
    this.content.state = {
      serviceCalled: true,
      waitingForResponse: false,
      responseIsRecieved: true,
      serviceCallFailed: true
    };
    this.content.paging = {
      currentPage: 1,
      pageSize: null,
      totalItemCount: null,
      totalPageCount: null
    }
    this.error("service call failed");
  }

  abstract call(params);
  abstract gotoPage(pageNumber);
  abstract refresh();
  abstract getAllItems(progressCallback?: (currentIteration: number, totalIterationCount: number) => void): Promise<any[]>;
}