import { describe, it, expect, vi, beforeEach } from "vitest";
import { F1StandingsAdapter, IndyCarStandingsAdapter } from "../f1";

// Minimal Jolpica driver standings response
const SAMPLE_JOLPICA_STANDINGS = {
  MRData: {
    StandingsTable: {
      StandingsLists: [
        {
          DriverStandings: [
            {
              position: "1",
              points: "195",
              wins: "5",
              Driver: { driverId: "max_verstappen", givenName: "Max", familyName: "Verstappen" },
            },
            {
              position: "2",
              points: "152",
              wins: "2",
              Driver: { driverId: "norris", givenName: "Lando", familyName: "Norris" },
            },
            {
              position: "3",
              points: "133",
              wins: "1",
              Driver: { driverId: "leclerc", givenName: "Charles", familyName: "Leclerc" },
            },
          ],
        },
      ],
    },
  },
};


// Minimal ESPN IndyCar standings response (flat, single standings list)
const SAMPLE_ESPN_INDYCAR = {
  standings: {
    entries: [
      {
        athlete: { id: "3097", displayName: "Scott Dixon" },
        stats: [
          { name: "rank", value: 1 },
          { name: "championshipPts", value: 437 },
          { name: "wins", value: 3 },
          { name: "starts", value: 10 },
        ],
      },
      {
        athlete: { id: "3098", displayName: "Alex Palou" },
        stats: [
          { name: "rank", value: 2 },
          { name: "championshipPts", value: 398 },
          { name: "wins", value: 2 },
          { name: "starts", value: 10 },
        ],
      },
    ],
  },
};

// IndyCar response nested under children (alternate ESPN shape)
const SAMPLE_ESPN_INDYCAR_NESTED = {
  children: [
    {
      standings: {
        entries: SAMPLE_ESPN_INDYCAR.standings.entries,
      },
    },
  ],
};

describe("F1StandingsAdapter", () => {
  beforeEach(() => {
    vi.stubGlobal("fetch", vi.fn());
  });

  it("returns one record per driver with correct names", async () => {
    vi.mocked(fetch)
      .mockResolvedValueOnce({ ok: true, json: async () => SAMPLE_JOLPICA_STANDINGS } as Response);

    const adapter = new F1StandingsAdapter();
    const records = await adapter.fetchStandings();

    expect(records).toHaveLength(3);
    expect(records[0].teamName).toBe("Max Verstappen");
    expect(records[1].teamName).toBe("Lando Norris");
  });

  it("sets externalTeamId to driverId", async () => {
    vi.mocked(fetch)
      .mockResolvedValueOnce({ ok: true, json: async () => SAMPLE_JOLPICA_STANDINGS } as Response);

    const records = await new F1StandingsAdapter().fetchStandings();
    expect(records[0].externalTeamId).toBe("max_verstappen");
    expect(records[2].externalTeamId).toBe("leclerc");
  });

  it("maps championship points to currentPoints", async () => {
    vi.mocked(fetch)
      .mockResolvedValueOnce({ ok: true, json: async () => SAMPLE_JOLPICA_STANDINGS } as Response);

    const records = await new F1StandingsAdapter().fetchStandings();
    expect(records[0].currentPoints).toBe(195);
    expect(records[1].currentPoints).toBe(152);
  });

  it("sets leagueRank to championship position", async () => {
    vi.mocked(fetch)
      .mockResolvedValueOnce({ ok: true, json: async () => SAMPLE_JOLPICA_STANDINGS } as Response);

    const records = await new F1StandingsAdapter().fetchStandings();
    expect(records[0].leagueRank).toBe(1);
    expect(records[2].leagueRank).toBe(3);
  });

  it("sets gamesPlayed to 0 (not stored for season_standings sports)", async () => {
    vi.mocked(fetch).mockResolvedValueOnce({
      ok: true,
      json: async () => SAMPLE_JOLPICA_STANDINGS,
    } as Response);

    const records = await new F1StandingsAdapter().fetchStandings();
    expect(records[0].gamesPlayed).toBe(0);
    expect(records[1].gamesPlayed).toBe(0);
  });

  it("sets winPct to 0 (not stored for season_standings sports)", async () => {
    vi.mocked(fetch).mockResolvedValueOnce({
      ok: true,
      json: async () => SAMPLE_JOLPICA_STANDINGS,
    } as Response);

    const records = await new F1StandingsAdapter().fetchStandings();
    expect(records[0].winPct).toBe(0);
  });

  it("throws when standings fetch fails", async () => {
    vi.mocked(fetch).mockResolvedValueOnce({
      ok: false,
      status: 500,
      statusText: "Internal Server Error",
    } as Response);

    await expect(new F1StandingsAdapter().fetchStandings()).rejects.toThrow("500");
  });

  it("throws when API returns empty standings", async () => {
    const empty = { MRData: { StandingsTable: { StandingsLists: [] } } };
    vi.mocked(fetch).mockResolvedValueOnce({
      ok: true,
      json: async () => empty,
    } as Response);

    await expect(new F1StandingsAdapter().fetchStandings()).rejects.toThrow(/no entries/i);
  });
});

describe("IndyCarStandingsAdapter", () => {
  beforeEach(() => {
    vi.stubGlobal("fetch", vi.fn());
  });

  it("parses flat ESPN standings", async () => {
    vi.mocked(fetch).mockResolvedValueOnce({
      ok: true,
      json: async () => SAMPLE_ESPN_INDYCAR,
    } as Response);

    const records = await new IndyCarStandingsAdapter().fetchStandings();
    expect(records).toHaveLength(2);
    expect(records[0].teamName).toBe("Scott Dixon");
    expect(records[1].teamName).toBe("Alex Palou");
  });

  it("parses nested ESPN standings (children[0].standings)", async () => {
    vi.mocked(fetch).mockResolvedValueOnce({
      ok: true,
      json: async () => SAMPLE_ESPN_INDYCAR_NESTED,
    } as Response);

    const records = await new IndyCarStandingsAdapter().fetchStandings();
    expect(records).toHaveLength(2);
    expect(records[0].teamName).toBe("Scott Dixon");
  });

  it("sets externalTeamId to ESPN athlete id", async () => {
    vi.mocked(fetch).mockResolvedValueOnce({
      ok: true,
      json: async () => SAMPLE_ESPN_INDYCAR,
    } as Response);

    const records = await new IndyCarStandingsAdapter().fetchStandings();
    expect(records[0].externalTeamId).toBe("3097");
  });

  it("maps championship points to currentPoints", async () => {
    vi.mocked(fetch).mockResolvedValueOnce({
      ok: true,
      json: async () => SAMPLE_ESPN_INDYCAR,
    } as Response);

    const records = await new IndyCarStandingsAdapter().fetchStandings();
    expect(records[0].currentPoints).toBe(437);
    expect(records[1].currentPoints).toBe(398);
  });

  it("sets leagueRank from rank stat", async () => {
    vi.mocked(fetch).mockResolvedValueOnce({
      ok: true,
      json: async () => SAMPLE_ESPN_INDYCAR,
    } as Response);

    const records = await new IndyCarStandingsAdapter().fetchStandings();
    expect(records[0].leagueRank).toBe(1);
    expect(records[1].leagueRank).toBe(2);
  });

  it("sets gamesPlayed from starts stat", async () => {
    vi.mocked(fetch).mockResolvedValueOnce({
      ok: true,
      json: async () => SAMPLE_ESPN_INDYCAR,
    } as Response);

    const records = await new IndyCarStandingsAdapter().fetchStandings();
    expect(records[0].gamesPlayed).toBe(10);
  });

  it("computes winPct as wins / starts", async () => {
    vi.mocked(fetch).mockResolvedValueOnce({
      ok: true,
      json: async () => SAMPLE_ESPN_INDYCAR,
    } as Response);

    const records = await new IndyCarStandingsAdapter().fetchStandings();
    expect(records[0].winPct).toBeCloseTo(3 / 10, 5);
  });

  it("throws when API returns HTTP error", async () => {
    vi.mocked(fetch).mockResolvedValueOnce({
      ok: false,
      status: 404,
      statusText: "Not Found",
    } as Response);

    await expect(new IndyCarStandingsAdapter().fetchStandings()).rejects.toThrow("404");
  });

  it("throws when API returns no entries", async () => {
    vi.mocked(fetch).mockResolvedValueOnce({
      ok: true,
      json: async () => ({ standings: { entries: [] } }),
    } as Response);

    await expect(new IndyCarStandingsAdapter().fetchStandings()).rejects.toThrow(
      /no entries/i
    );
  });
});