import { describe, it, expect, vi, beforeEach } from "vitest";

vi.mock("~/database/context", () => ({
  database: vi.fn(),
}));

import {
  upsertSeasonMatch,
  upsertSeasonMatchBulk,
  upsertMatchSubGame,
} from "../season-match";
import { database } from "~/database/context";

const SPORTS_SEASON_ID = "ss-1";
const SCORING_EVENT_ID = "evt-1";
const P1_ID = "p1";
const P2_ID = "p2";
const WINNER_ID = "p1";
const EXTERNAL_ID = "panda_123";

function makeUpsertDb(returnValue: object) {
  const returningFn = vi.fn().mockResolvedValue([returnValue]);
  const onConflictFn = vi.fn().mockReturnValue({ returning: returningFn });
  const valuesFn = vi.fn().mockReturnValue({ onConflictDoUpdate: onConflictFn });
  return {
    insert: vi.fn().mockReturnValue({ values: valuesFn }),
    _returning: returningFn,
    _onConflict: onConflictFn,
    _values: valuesFn,
  };
}

function makeBulkUpsertDb(returnValues: object[]) {
  const returningFn = vi.fn().mockResolvedValue(returnValues);
  const onConflictFn = vi.fn().mockReturnValue({ returning: returningFn });
  const valuesFn = vi.fn().mockReturnValue({ onConflictDoUpdate: onConflictFn });
  return {
    insert: vi.fn().mockReturnValue({ values: valuesFn }),
    _returning: returningFn,
  };
}

const SAMPLE_MATCH = {
  id: "match-1",
  sportsSeasonId: SPORTS_SEASON_ID,
  scoringEventId: SCORING_EVENT_ID,
  participant1Id: P1_ID,
  participant2Id: P2_ID,
  winnerId: WINNER_ID,
  participant1Score: 2,
  participant2Score: 1,
  matchStage: 1,
  matchRound: 3,
  matchday: null,
  isSeries: true,
  status: "complete" as const,
  scheduledAt: null,
  startedAt: null,
  completedAt: new Date("2025-01-15T14:00:00Z"),
  externalMatchId: EXTERNAL_ID,
  createdAt: new Date(),
  updatedAt: new Date(),
};

describe("upsertSeasonMatch", () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  it("inserts a match and returns it", async () => {
    const mockDb = makeUpsertDb(SAMPLE_MATCH);
    vi.mocked(database).mockReturnValue(mockDb as unknown as ReturnType<typeof database>);

    const result = await upsertSeasonMatch({
      sportsSeasonId: SPORTS_SEASON_ID,
      scoringEventId: SCORING_EVENT_ID,
      participant1Id: P1_ID,
      participant2Id: P2_ID,
      winnerId: WINNER_ID,
      participant1Score: 2,
      participant2Score: 1,
      matchStage: 1,
      matchRound: 3,
      isSeries: true,
      status: "complete",
      completedAt: new Date("2025-01-15T14:00:00Z"),
      externalMatchId: EXTERNAL_ID,
    });

    expect(result.id).toBe("match-1");
    expect(result.matchStage).toBe(1);
    expect(result.matchRound).toBe(3);
    expect(result.status).toBe("complete");
    expect(mockDb.insert).toHaveBeenCalledOnce();
    expect(mockDb._values).toHaveBeenCalledOnce();
    expect(mockDb._onConflict).toHaveBeenCalledOnce();
  });

  it("defaults isSeries to false when not provided", async () => {
    const expectedMatch = { ...SAMPLE_MATCH, isSeries: false };
    const mockDb = makeUpsertDb(expectedMatch);
    vi.mocked(database).mockReturnValue(mockDb as unknown as ReturnType<typeof database>);

    const result = await upsertSeasonMatch({
      sportsSeasonId: SPORTS_SEASON_ID,
      externalMatchId: "ext_1",
      status: "scheduled",
    });

    const valuesCall = mockDb._values.mock.calls[0][0];
    expect(valuesCall.isSeries).toBe(false);
    expect(result.isSeries).toBe(false);
  });

  it("allows null matchStage and matchRound for non-CS2 sports", async () => {
    const mlbMatch = { ...SAMPLE_MATCH, matchStage: null, matchRound: null, matchday: null, isSeries: false };
    const mockDb = makeUpsertDb(mlbMatch);
    vi.mocked(database).mockReturnValue(mockDb as unknown as ReturnType<typeof database>);

    const result = await upsertSeasonMatch({
      sportsSeasonId: SPORTS_SEASON_ID,
      externalMatchId: "mlb_game_456",
      status: "complete",
      participant1Score: 5,
      participant2Score: 3,
    });

    const valuesCall = mockDb._values.mock.calls[0][0];
    expect(valuesCall.matchStage).toBeUndefined();
    expect(valuesCall.matchRound).toBeUndefined();
    expect(result.matchStage).toBeNull();
    expect(result.matchRound).toBeNull();
  });
});

describe("upsertSeasonMatchBulk", () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  it("returns empty array for empty input", async () => {
    vi.mocked(database).mockReturnValue({} as ReturnType<typeof database>);
    const result = await upsertSeasonMatchBulk([]);
    expect(result).toEqual([]);
  });

  it("bulk upserts multiple matches", async () => {
    const match2 = { ...SAMPLE_MATCH, id: "match-2", matchRound: 4, externalMatchId: "panda_456" };
    const mockDb = makeBulkUpsertDb([SAMPLE_MATCH, match2]);
    vi.mocked(database).mockReturnValue(mockDb as unknown as ReturnType<typeof database>);

    const result = await upsertSeasonMatchBulk([
      { sportsSeasonId: SPORTS_SEASON_ID, externalMatchId: EXTERNAL_ID, status: "complete", matchStage: 1, matchRound: 3 },
      { sportsSeasonId: SPORTS_SEASON_ID, externalMatchId: "panda_456", status: "complete", matchStage: 1, matchRound: 4 },
    ]);

    expect(result).toHaveLength(2);
    expect(mockDb.insert).toHaveBeenCalledOnce();
  });
});

describe("upsertMatchSubGame", () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  it("upserts a map sub-game", async () => {
    const subGame = {
      id: "sg-1",
      seasonMatchId: "match-1",
      gameNumber: 1,
      gameLabel: "Mirage",
      participant1Score: 16,
      participant2Score: 14,
      winnerId: P1_ID,
      status: "complete" as const,
      startedAt: null,
      completedAt: new Date(),
      externalGameId: "map_1",
      createdAt: new Date(),
      updatedAt: new Date(),
    };
    const mockDb = makeUpsertDb(subGame);
    vi.mocked(database).mockReturnValue(mockDb as unknown as ReturnType<typeof database>);

    const result = await upsertMatchSubGame({
      seasonMatchId: "match-1",
      gameNumber: 1,
      gameLabel: "Mirage",
      participant1Score: 16,
      participant2Score: 14,
      winnerId: P1_ID,
      status: "complete",
      externalGameId: "map_1",
    });

    expect(result.gameLabel).toBe("Mirage");
    expect(result.participant1Score).toBe(16);
    expect(result.gameNumber).toBe(1);
    expect(mockDb.insert).toHaveBeenCalledOnce();
    expect(mockDb._onConflict).toHaveBeenCalledOnce();
  });

  it("allows null gameLabel for non-named sub-games", async () => {
    const subGame = {
      id: "sg-2",
      seasonMatchId: "match-1",
      gameNumber: 2,
      gameLabel: null,
      participant1Score: 3,
      participant2Score: 1,
      winnerId: P1_ID,
      status: "complete" as const,
      startedAt: null,
      completedAt: new Date(),
      externalGameId: null,
      createdAt: new Date(),
      updatedAt: new Date(),
    };
    const mockDb = makeUpsertDb(subGame);
    vi.mocked(database).mockReturnValue(mockDb as unknown as ReturnType<typeof database>);

    const result = await upsertMatchSubGame({
      seasonMatchId: "match-1",
      gameNumber: 2,
      participant1Score: 3,
      participant2Score: 1,
      status: "complete",
    });

    expect(result.gameLabel).toBeNull();
    expect(result.gameNumber).toBe(2);
  });
});