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

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

vi.mock("~/database/schema", () => ({
  sportsSeasonTournaments: {
    sportsSeasonId: "sst.sports_season_id",
    tournamentId: "sst.tournament_id",
  },
}));

vi.mock("drizzle-orm", () => ({
  eq: (col: unknown, val: unknown) => ({ type: "eq", col, val }),
  and: (...args: unknown[]) => ({ type: "and", args }),
}));

vi.mock("~/models/tournament", () => ({
  getTournamentById: vi.fn(),
}));

vi.mock("~/models/sports-season", () => ({
  findSportsSeasonById: vi.fn(),
}));

import {
  linkTournamentToSportsSeason,
  unlinkTournamentFromSportsSeason,
} from "../sports-season-tournament";
import { database } from "~/database/context";
import { getTournamentById } from "~/models/tournament";
import { findSportsSeasonById } from "~/models/sports-season";

const SPORT_ID = "sport-1";
const SPORTS_SEASON_ID = "ss-1";
const TOURNAMENT_ID = "t-1";

const mockSportsSeason = {
  id: SPORTS_SEASON_ID,
  sportId: SPORT_ID,
  name: "2026 Tennis",
  year: 2026,
  startDate: null,
  endDate: null,
  status: "active" as const,
  scoringType: "majors" as const,
  scoringPattern: "qualifying_points",
  totalMajors: 4,
  majorsCompleted: 0,
  qualifyingPointsFinalized: false,
  eloCalibrationExponent: null,
  eloMinRating: null,
  eloMaxRating: null,
  simulationStatus: "idle" as const,
  draftOn: "2026-01-01",
  draftOff: "2026-12-31",
  createdAt: new Date(),
  updatedAt: new Date(),
};

const mockTournament = {
  id: TOURNAMENT_ID,
  sportId: SPORT_ID,
  name: "Wimbledon",
  year: 2026,
  startsAt: null,
  endsAt: null,
  surface: "grass",
  location: "London",
  status: "scheduled" as const,
  externalKey: null,
  createdAt: new Date(),
  updatedAt: new Date(),
};

function makeInsertDb(returnValue: object) {
  return {
    insert: vi.fn().mockReturnValue({
      values: vi.fn().mockReturnValue({
        returning: vi.fn().mockResolvedValue([returnValue]),
      }),
    }),
  };
}

function makeDeleteDb() {
  return {
    delete: vi.fn().mockReturnValue({
      where: vi.fn().mockResolvedValue(undefined),
    }),
  };
}

beforeEach(() => {
  vi.clearAllMocks();
});

describe("linkTournamentToSportsSeason", () => {
  it("links a tournament to a sports season when sports match", async () => {
    vi.mocked(findSportsSeasonById).mockResolvedValue(mockSportsSeason as never);
    vi.mocked(getTournamentById).mockResolvedValue(mockTournament as never);

    const link = { id: "link-1", sportsSeasonId: SPORTS_SEASON_ID, tournamentId: TOURNAMENT_ID, createdAt: new Date() };
    vi.mocked(database).mockReturnValue(makeInsertDb(link) as never);

    const result = await linkTournamentToSportsSeason(SPORTS_SEASON_ID, TOURNAMENT_ID);

    expect(result).toEqual(link);
  });

  it("throws when sports season not found", async () => {
    vi.mocked(findSportsSeasonById).mockResolvedValue(undefined as never);
    vi.mocked(getTournamentById).mockResolvedValue(mockTournament as never);

    await expect(
      linkTournamentToSportsSeason(SPORTS_SEASON_ID, TOURNAMENT_ID)
    ).rejects.toThrow("Sports season ss-1 not found");
  });

  it("throws when tournament not found", async () => {
    vi.mocked(findSportsSeasonById).mockResolvedValue(mockSportsSeason as never);
    vi.mocked(getTournamentById).mockResolvedValue(null as never);

    await expect(
      linkTournamentToSportsSeason(SPORTS_SEASON_ID, TOURNAMENT_ID)
    ).rejects.toThrow("Tournament t-1 not found");
  });

  it("throws when tournament and sports season belong to different sports", async () => {
    vi.mocked(findSportsSeasonById).mockResolvedValue(mockSportsSeason as never);
    vi.mocked(getTournamentById).mockResolvedValue({ ...mockTournament, sportId: "different-sport" } as never);

    await expect(
      linkTournamentToSportsSeason(SPORTS_SEASON_ID, TOURNAMENT_ID)
    ).rejects.toThrow("Tournament and sports season must belong to the same sport");
  });
});

describe("unlinkTournamentFromSportsSeason", () => {
  it("deletes the link", async () => {
    vi.mocked(database).mockReturnValue(makeDeleteDb() as never);

    await unlinkTournamentFromSportsSeason(SPORTS_SEASON_ID, TOURNAMENT_ID);

    const db = vi.mocked(database).mock.results[0].value;
    expect(db.delete).toHaveBeenCalled();
  });
});