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

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

// Mock the schema so the schema module doesn't execute drizzle builder calls,
// following the same pattern as scoring-event-dashboard.test.ts.
vi.mock("~/database/schema", () => ({
  sportsSeasons: {
    id: "ss.id",
    sportId: "ss.sport_id",
    name: "ss.name",
    year: "ss.year",
    draftOn: "ss.draft_on",
    draftOff: "ss.draft_off",
  },
}));

vi.mock("drizzle-orm", () => ({
  eq:  (col: unknown, val: unknown) => ({ type: "eq", col, val }),
  sql: (strings: TemplateStringsArray, ...values: unknown[]) => ({ type: "sql", strings, values }),
  lte: (col: unknown, val: unknown) => ({ type: "lte", col, val }),
  gte: (col: unknown, val: unknown) => ({ type: "gte", col, val }),
  and: (...args: unknown[]) => ({ type: "and", args }),
  desc: (col: unknown) => ({ type: "desc", col }),
  asc:  (col: unknown) => ({ type: "asc",  col }),
}));

import {
  findAllSportsSeasons,
  findDraftableSportsSeasons,
  findDraftScheduleForHorizon,
} from "../sports-season";
import { database } from "~/database/context";

const today = new Date().toISOString().slice(0, 10);
const future = "2099-12-31";
const pastStart = "2020-01-01";
const pastEnd = "2020-12-31";

const mockSeasons = [
  { id: "season-1", name: "2025 NBA Playoffs", draftOn: today, draftOff: future, year: 2025, status: "upcoming", sport: { name: "NBA" }, participants: [] },
  { id: "season-2", name: "2025 F1 Season", draftOn: today, draftOff: future, year: 2025, status: "upcoming", sport: { name: "F1" }, participants: [] },
  { id: "season-3", name: "2024 Old Golf", draftOn: pastStart, draftOff: pastEnd, year: 2024, status: "completed", sport: { name: "Golf" }, participants: [] },
];

function makeMockDb(seasons: Record<string, unknown>[]) {
  return {
    query: {
      sportsSeasons: {
        findMany: vi.fn().mockResolvedValue(seasons),
      },
    },
  };
}

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

describe("findAllSportsSeasons", () => {
  it("returns all sport seasons regardless of draft window", async () => {
    vi.mocked(database).mockReturnValue(makeMockDb(mockSeasons) as never);
    const result = await findAllSportsSeasons();
    expect(result).toHaveLength(3);
  });

  it("sorts active before upcoming before completed", async () => {
    const seasons = [
      { id: "s1", name: "Completed", draftOn: pastStart, draftOff: pastEnd, year: 2024, status: "completed", sport: { name: "Sport" } },
      { id: "s2", name: "Active", draftOn: today, draftOff: future, year: 2025, status: "active", sport: { name: "Sport" } },
      { id: "s3", name: "Upcoming", draftOn: today, draftOff: future, year: 2026, status: "upcoming", sport: { name: "Sport" } },
    ];
    vi.mocked(database).mockReturnValue(makeMockDb(seasons) as never);
    const result = await findAllSportsSeasons();
    expect(result.map((s) => s.status)).toEqual(["active", "upcoming", "completed"]);
  });

  it("sorts by sport name alphabetically within the same status", async () => {
    const seasons = [
      { id: "s1", name: "Zebra Season", draftOn: today, draftOff: future, year: 2025, status: "active", sport: { name: "Zebra" } },
      { id: "s2", name: "Apple Season", draftOn: today, draftOff: future, year: 2025, status: "active", sport: { name: "Apple" } },
      { id: "s3", name: "Mango Season", draftOn: today, draftOff: future, year: 2025, status: "active", sport: { name: "Mango" } },
    ];
    vi.mocked(database).mockReturnValue(makeMockDb(seasons) as never);
    const result = await findAllSportsSeasons();
    expect(result.map((s) => s.sport.name)).toEqual(["Apple", "Mango", "Zebra"]);
  });

  it("sorts by year ascending within the same status and sport name", async () => {
    const seasons = [
      { id: "s1", name: "NFL 2026", draftOn: today, draftOff: future, year: 2026, status: "upcoming", sport: { name: "NFL" } },
      { id: "s2", name: "NFL 2024", draftOn: today, draftOff: future, year: 2024, status: "upcoming", sport: { name: "NFL" } },
      { id: "s3", name: "NFL 2025", draftOn: today, draftOff: future, year: 2025, status: "upcoming", sport: { name: "NFL" } },
    ];
    vi.mocked(database).mockReturnValue(makeMockDb(seasons) as never);
    const result = await findAllSportsSeasons();
    expect(result.map((s) => s.year)).toEqual([2024, 2025, 2026]);
  });
});

describe("findDraftableSportsSeasons", () => {
  it("returns only currently-draftable seasons", async () => {
    const draftableOnly = mockSeasons.filter((s) => s.draftOn <= today && today <= s.draftOff);
    const mockDb = makeMockDb(draftableOnly);
    vi.mocked(database).mockReturnValue(mockDb as never);

    const result = await findDraftableSportsSeasons();
    expect(result).toHaveLength(2);
    expect(result.every((s) => s.draftOn <= today && today <= s.draftOff)).toBe(true);
  });

  it("returns empty array when no seasons fall within a draft window", async () => {
    vi.mocked(database).mockReturnValue(makeMockDb([]) as never);
    const result = await findDraftableSportsSeasons();
    expect(result).toHaveLength(0);
  });

  it("calls findMany with a where clause", async () => {
    const mockDb = makeMockDb([]);
    vi.mocked(database).mockReturnValue(mockDb as never);

    await findDraftableSportsSeasons();
    expect(mockDb.query.sportsSeasons.findMany).toHaveBeenCalledWith(
      expect.objectContaining({
        where: expect.anything(),
      })
    );
  });
});

describe("findDraftScheduleForHorizon", () => {
  const horizonWindows = [
    {
      id: "w1",
      name: "2026 NBA Playoffs",
      year: 2026,
      status: "upcoming",
      draftOn: today,
      draftOff: future,
      sport: { id: "nba", name: "NBA", slug: "nba", iconUrl: null },
    },
    {
      id: "w2",
      name: "2026 F1 Season",
      year: 2026,
      status: "active",
      draftOn: today,
      draftOff: future,
      sport: { id: "f1", name: "F1", slug: "f1", iconUrl: null },
    },
  ];

  it("maps rows to windows carrying their sport info", async () => {
    vi.mocked(database).mockReturnValue(makeMockDb(horizonWindows) as never);
    const result = await findDraftScheduleForHorizon(6);
    expect(result).toHaveLength(2);
    expect(result[0]).toMatchObject({
      id: "w1",
      draftOn: today,
      draftOff: future,
      sport: { id: "nba", name: "NBA" },
    });
  });

  it("returns an empty array when no windows overlap the horizon", async () => {
    vi.mocked(database).mockReturnValue(makeMockDb([]) as never);
    const result = await findDraftScheduleForHorizon(12);
    expect(result).toHaveLength(0);
  });

  it("queries with a where clause, ordering, and the sport relation", async () => {
    const mockDb = makeMockDb([]);
    vi.mocked(database).mockReturnValue(mockDb as never);

    await findDraftScheduleForHorizon(6);
    expect(mockDb.query.sportsSeasons.findMany).toHaveBeenCalledWith(
      expect.objectContaining({
        where: expect.anything(),
        orderBy: expect.anything(),
        with: expect.anything(),
      })
    );
  });
});