import { SortDirection } from "@dccs/react-table-plain";

export const createSource = (
  get: (url: string) => Promise<any>,
  url: string
) => (
  page: number,
  rowsPerPage: number,
  orderBy: string | undefined,
  sort: SortDirection | undefined,
  filter?: { [key: string]: any }
) => {
  const urlSep = url.indexOf("?") === -1 ? "?" : "&";
  const p = new Promise<{ total: number; data: any[] }>((res, rej) => {
    get(
      `${url}${urlSep}page=${page}&count=${rowsPerPage}${
        orderBy != null ? "&orderBy=" + orderBy : ""
      }${sort != null ? "&desc=" + (sort === "desc") : ""}${serializeFilter(
        filter || {}
      )}`
    )
      .then(resp => res({ data: resp.data, total: resp.total }))
      .catch(rej);
  });

  return p;
};

export const createJsonServerSource = (
  get: (url: string) => Promise<any>,
  url: string
) => (
  page: number,
  rowsPerPage: number,
  orderBy: string | undefined,
  sort: SortDirection | undefined,
  filter?: { [key: string]: any }
) => {
  const urlSep = url.indexOf("?") === -1 ? "?" : "&";
  const p = new Promise<{ total: number; data: any[] }>((res, rej) => {
    get(
      `${url}${urlSep}_page=${page}&_limit=${rowsPerPage}&{
        orderBy != null ? "_sort=" + orderBy : ""
      }
      }${sort != null ? "&_order=" + sort : ""}
      ${serializeFilter(filter || {})}`
    )
      .then(resp => res({ data: resp, total: resp.length }))
      .catch(rej);
  });

  return p;
};

export function serializeFilter(filter: { [key: string]: any }) {
  let query = "";
  // tslint:disable-next-line:forin
  for (const x in filter) {
    if (filter[x] != null) {
      if (Array.isArray(filter[x])) {
        filter[x].forEach((e: any) => {
          query += `&${x}=${encodeURIComponent(e)}`;
        });
      } else {
        query += `&${x}=${encodeURIComponent(filter[x])}`;
      }
    }
  }
  return query;
}