import { beforeEach, describe, expect, it, jest } from "@jest/globals";
import {
  ChapmanApiBasedParkingRepositoryLoader
} from "../../../src/loaders/parking/ChapmanApiBasedParkingRepositoryLoader";
import { InMemoryParkingRepository } from "../../../src/repositories/InMemoryParkingRepository";
import {
  resetGlobalFetchMockJson,
  updateGlobalFetchMockJson,
  updateGlobalFetchMockJsonToThrowSyntaxError
} from "../../testHelpers/fetchMockHelpers";
import {
  chapmanParkingStructureData
} from "../../jsonSnapshots/chapmanParkingStructureData/chapmanParkingStructureData";
import { IParkingStructure } from "../../../src/entities/ParkingRepositoryEntities";
import { assertAsyncCallbackThrowsApiResponseError } from "../../testHelpers/assertAsyncCallbackThrowsApiResponseError";

describe("ChapmanApiBasedParkingRepositoryLoader", () => {
  let loader: ChapmanApiBasedParkingRepositoryLoader;

  beforeEach(() => {
    loader = new ChapmanApiBasedParkingRepositoryLoader(
      new InMemoryParkingRepository(),
    );
    resetGlobalFetchMockJson();
  });

  describe("fetchAndUpdateAll", () => {
    it("calls all the correct methods", async () => {
      const spies = {
        fetchAndUpdateParkingStructures: jest.spyOn(loader, "fetchAndUpdateParkingStructures"),
      };

      Object.values(spies).forEach((spy: any) => {
        spy.mockResolvedValue(undefined);
      });

      await loader.fetchAndUpdateAll();

      Object.values(spies).forEach((spy: any) => {
        expect(spy).toHaveBeenCalled();
      });
    });
  });

  describe("fetchAndUpdateParkingStructures", () => {
    it("fetches and update parking structures with unique IDs", async () => {
      updateGlobalFetchMockJson(chapmanParkingStructureData);

      await loader.fetchAndUpdateParkingStructures();

      let expectedStructures: IParkingStructure[] = [
        {
          address: "300 E Walnut, Orange, CA 92867",
          capacity: 871,
          spotsAvailable: 211,
          coordinates: {
            latitude: 33.7945513,
            longitude: -117.8518707,
          },
          name: "Anderson Structure",
          id: "",
          updatedTimeMs: Date.now(),
        },
        {
          address: "200 W Sycamore Ave, Orange, CA 92866-1053",
          capacity: 692,
          spotsAvailable: 282,
          coordinates: {
            latitude: 33.792937,
            longitude: -117.854782
          },
          name: "Barrera",
          id: "",
          updatedTimeMs: Date.now(),
        }
      ];
      expectedStructures[0].id = ChapmanApiBasedParkingRepositoryLoader.generateId(expectedStructures[0].address);
      expectedStructures[1].id = ChapmanApiBasedParkingRepositoryLoader.generateId(expectedStructures[1].address);

      const structuresFromLoader = await loader.repository.getParkingStructures();

      // Set updatedTimeMs on expected data to avoid comparison
      expectedStructures[0].updatedTimeMs = structuresFromLoader[0].updatedTimeMs;
      expectedStructures[1].updatedTimeMs = structuresFromLoader[1].updatedTimeMs;

      expect(structuresFromLoader).toEqual(expectedStructures);
    });

    it("throws ApiResponseError if data is incorrect", async () => {
      updateGlobalFetchMockJsonToThrowSyntaxError();

      await assertAsyncCallbackThrowsApiResponseError(async () => {
        await loader.fetchAndUpdateParkingStructures();
      });
    })
  });

  describe("constructIParkingStructureFromJson", () => {
    it("normalizes the spots available if it's over the capacity", async () => {
      const sampleJsonStructure: any = {
        Capacity: 10,
        Latitude: 1,
        Longitude: 1,
        Address: "300 E Walnut, Orange, CA 92867",
        Name: "Anderson Structure",
        CurrentCount: 11,
      };

      const returnedStructure = loader.constructIParkingStructureFromJson(sampleJsonStructure);
      expect(returnedStructure.spotsAvailable).toEqual(returnedStructure.capacity);
    });
  });
});