/* tslint:disable */
import { Observable, of } from "rxjs";
import {
  SAMSDSAutocompleteServiceInterface,
  SAMSDSHiercarchicalServiceResult,
} from "./models/SAMSDSAutocompleteServiceInterface";
import { map } from "rxjs/operators";

export class AutoCompleteSampleDataService implements SAMSDSAutocompleteServiceInterface {
  private loadedData;
  constructor() {
    const data = SampleAutoCompleteData;
    for (let i = 0; i < data.length; i++) {
      const item = data[i];
      const results = data.filter((it) => it.parentId === item.id);
      item["childCount"] = results.length;
    }
    this.loadedData = data;
  }

  getDataByText(
    currentItems: number,
    searchValue?: string
  ): Observable<SAMSDSHiercarchicalServiceResult> {
    const itemIncrease = 25;
    const data = of(this.loadedData);
    let itemsOb: Observable<object[]>;
    if (searchValue) {
      itemsOb = data.pipe(
        map((items) =>
          items.filter(
            (itm) =>
              itm.name.indexOf(searchValue) !== -1 ||
              itm.subtext.indexOf(searchValue) !== -1
          )
        )
      );
    } else {
      itemsOb = data;
    }
    const items: object[] = this.itemsListOutofObservable(itemsOb);
    const totalItemCount = items.length;

    const maxSectionPosition = this.getMaxSectionPosition(
      currentItems,
      itemIncrease,
      totalItemCount
    );
    const subItemsitems = items.slice(currentItems, maxSectionPosition);

    const returnItem = {
      items: subItemsitems,
      totalItems: totalItemCount,
    };
    return of(returnItem);
  }

  private itemsListOutofObservable(itemsOb: any) {
    let items: object[];
    itemsOb.subscribe((result) => {
      items = result;
    });
    return items;
  }

  private getMaxSectionPosition(
    currentItemCount: number,
    itemIncrease: number,
    totalItemCount: number
  ) {
    let maxSectionPosition = currentItemCount + itemIncrease;
    if (maxSectionPosition > totalItemCount) {
      maxSectionPosition = totalItemCount;
    }
    return maxSectionPosition;
  }
}

export const SampleAutoCompleteData = [
  {
    id: "1",
    parentId: null,
    name: "Level 1",
    subtext: "id 1",
    type: "Level 1",
  },
  { id: "2", parentId: "1", name: "Level 2", subtext: "id 2", type: "Level 2" },
  { id: "3", parentId: "2", name: "Level 3", subtext: "id 3", type: "Level 3" },
  { id: "4", parentId: "3", name: "Level 4", subtext: "id 4", type: "Level 4" },
  { id: "5", parentId: "4", name: "Level 5", subtext: "id 5", type: "Level 5" },
  { id: "6", parentId: "5", name: "Level 6", subtext: "id 6", type: "Level 6" },
  { id: "7", parentId: "6", name: "Level 7", subtext: "id 7", type: "Level 7" },
  { id: "8", parentId: "5", name: "Level 6", subtext: "id 8", type: "Level 6" },
  { id: "9", parentId: "8", name: "Level 7", subtext: "id 9", type: "Level 7" },
  {
    id: "10",
    parentId: "8",
    name: "Level 7",
    subtext: "id 10",
    type: "Level 7",
  },
  {
    id: "11",
    parentId: "5",
    name: "Level 6",
    subtext: "id 11",
    type: "Level 6",
  },
];