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

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

vi.mock("~/services/discord", () => ({
  sendQualifyingPointsUpdateNotification: vi.fn().mockResolvedValue(undefined),
}));

vi.mock("~/models/account", () => ({
  findDiscordIdsByUserIds: vi.fn().mockResolvedValue(new Map()),
}));

vi.mock("~/models/user", () => ({
  getUserDisplayName: vi.fn((u: { username?: string }) => u.username ?? null),
}));

import { notifyQualifyingPointsUpdate } from "../qualifying-points-discord.server";
import { sendQualifyingPointsUpdateNotification } from "~/services/discord";
import { findDiscordIdsByUserIds } from "~/models/account";

// ---------------------------------------------------------------------------
// Fixtures
// ---------------------------------------------------------------------------

const SPORTS_SEASON_ID = "ss-1";
const SCORING_EVENT_ID = "ev-1";
const SEASON_ID = "season-1";
const PARTICIPANT_ID = "p-1";
const OWNER_ID = "u-1";
const WEBHOOK_URL = "https://discord.com/api/webhooks/123/abc";

function makeEvent(overrides = {}) {
  return {
    id: SCORING_EVENT_ID,
    name: "Roland Garros 2025",
    sportsSeason: { sport: { name: "Tennis" } },
    ...overrides,
  };
}

function makeDb(overrides: Record<string, unknown> = {}) {
  return {
    query: {
      scoringEvents: {
        findFirst: vi.fn().mockResolvedValue(makeEvent()),
      },
      seasonSports: {
        findMany: vi.fn().mockResolvedValue([{ seasonId: SEASON_ID }]),
      },
      eventResults: {
        findMany: vi.fn().mockResolvedValue([
          {
            seasonParticipantId: PARTICIPANT_ID,
            qualifyingPointsAwarded: "10",
            scoringEventId: SCORING_EVENT_ID,
          },
        ]),
      },
      seasonParticipantQualifyingTotals: {
        findMany: vi.fn().mockResolvedValue([
          { participantId: PARTICIPANT_ID, totalQualifyingPoints: "45", sportsSeasonId: SPORTS_SEASON_ID },
        ]),
      },
      seasons: {
        findMany: vi.fn().mockResolvedValue([
          {
            id: SEASON_ID,
            year: 2025,
            league: { name: "Slam League", discordWebhookUrl: WEBHOOK_URL },
          },
        ]),
      },
      draftPicks: {
        findMany: vi.fn().mockResolvedValue([
          {
            participantId: PARTICIPANT_ID,
            seasonId: SEASON_ID,
            team: { id: "t-1", name: "Alpha FC", ownerId: OWNER_ID },
          },
        ]),
      },
      seasonParticipants: {
        findMany: vi.fn().mockResolvedValue([{ id: PARTICIPANT_ID, name: "Carlos Alcaraz" }]),
      },
      users: {
        findMany: vi.fn().mockResolvedValue([
          { id: OWNER_ID, username: "chris", discordPingEnabled: false },
        ]),
      },
      ...overrides,
    },
  };
}

// ---------------------------------------------------------------------------
// Tests
// ---------------------------------------------------------------------------

beforeEach(() => {
  vi.clearAllMocks();
  vi.mocked(findDiscordIdsByUserIds).mockResolvedValue(new Map());
});

describe("notifyQualifyingPointsUpdate", () => {
  it("returns early when the scoring event is not found", async () => {
    const db = makeDb({
      scoringEvents: { findFirst: vi.fn().mockResolvedValue(null) },
    });

    await notifyQualifyingPointsUpdate(SPORTS_SEASON_ID, SCORING_EVENT_ID, db as never);

    expect(sendQualifyingPointsUpdateNotification).not.toHaveBeenCalled();
  });

  it("returns early when no season sports exist for the sports season", async () => {
    const db = makeDb({
      seasonSports: { findMany: vi.fn().mockResolvedValue([]) },
    });

    await notifyQualifyingPointsUpdate(SPORTS_SEASON_ID, SCORING_EVENT_ID, db as never);

    expect(sendQualifyingPointsUpdateNotification).not.toHaveBeenCalled();
  });

  it("returns early when no qualifying points were awarded in the event", async () => {
    const db = makeDb({
      eventResults: {
        findMany: vi.fn().mockResolvedValue([
          { seasonParticipantId: PARTICIPANT_ID, qualifyingPointsAwarded: null },
        ]),
      },
    });

    await notifyQualifyingPointsUpdate(SPORTS_SEASON_ID, SCORING_EVENT_ID, db as never);

    expect(sendQualifyingPointsUpdateNotification).not.toHaveBeenCalled();
  });

  it("skips leagues without a Discord webhook URL", async () => {
    const db = makeDb({
      seasons: {
        findMany: vi.fn().mockResolvedValue([
          { id: SEASON_ID, year: 2025, league: { name: "Slam League", discordWebhookUrl: null } },
        ]),
      },
    });

    await notifyQualifyingPointsUpdate(SPORTS_SEASON_ID, SCORING_EVENT_ID, db as never);

    expect(sendQualifyingPointsUpdateNotification).not.toHaveBeenCalled();
  });

  it("skips leagues where no QP participants were drafted", async () => {
    const db = makeDb({
      draftPicks: {
        findMany: vi.fn().mockResolvedValue([]),
      },
    });

    await notifyQualifyingPointsUpdate(SPORTS_SEASON_ID, SCORING_EVENT_ID, db as never);

    expect(sendQualifyingPointsUpdateNotification).not.toHaveBeenCalled();
  });

  it("calls sendQualifyingPointsUpdateNotification with correct participant data", async () => {
    const db = makeDb();

    await notifyQualifyingPointsUpdate(SPORTS_SEASON_ID, SCORING_EVENT_ID, db as never);

    expect(sendQualifyingPointsUpdateNotification).toHaveBeenCalledOnce();
    expect(sendQualifyingPointsUpdateNotification).toHaveBeenCalledWith(
      expect.objectContaining({
        webhookUrl: WEBHOOK_URL,
        seasonName: "Slam League 2025",
        eventName: "Roland Garros 2025",
        sportName: "Tennis",
        entries: [
          expect.objectContaining({
            participantName: "Carlos Alcaraz",
            qpEarned: 10,
            qpTotal: 45,
            ownerUsername: "chris",
            ownerDiscordUserId: undefined,
          }),
        ],
      })
    );
  });

  it("sends once per league, not once per participant", async () => {
    const db = makeDb({
      seasonSports: {
        findMany: vi.fn().mockResolvedValue([{ seasonId: SEASON_ID }, { seasonId: "season-2" }]),
      },
      seasons: {
        findMany: vi.fn().mockResolvedValue([
          { id: SEASON_ID, year: 2025, league: { name: "League A", discordWebhookUrl: WEBHOOK_URL } },
          { id: "season-2", year: 2025, league: { name: "League B", discordWebhookUrl: "https://discord.com/api/webhooks/456/def" } },
        ]),
      },
      draftPicks: {
        findMany: vi.fn().mockResolvedValue([
          { participantId: PARTICIPANT_ID, seasonId: SEASON_ID, team: { name: "Alpha FC", ownerId: null } },
          { participantId: PARTICIPANT_ID, seasonId: "season-2", team: { name: "Beta FC", ownerId: null } },
        ]),
      },
    });

    await notifyQualifyingPointsUpdate(SPORTS_SEASON_ID, SCORING_EVENT_ID, db as never);

    expect(sendQualifyingPointsUpdateNotification).toHaveBeenCalledTimes(2);
  });

  it("resolves owner Discord ID and passes it when user has discordPingEnabled", async () => {
    vi.mocked(findDiscordIdsByUserIds).mockResolvedValue(new Map([[OWNER_ID, "discord-999"]]));
    const db = makeDb({
      users: {
        findMany: vi.fn().mockResolvedValue([
          { id: OWNER_ID, username: "chris", discordPingEnabled: true },
        ]),
      },
    });

    await notifyQualifyingPointsUpdate(SPORTS_SEASON_ID, SCORING_EVENT_ID, db as never);

    expect(sendQualifyingPointsUpdateNotification).toHaveBeenCalledWith(
      expect.objectContaining({
        entries: [expect.objectContaining({ ownerDiscordUserId: "discord-999" })],
      })
    );
  });

  it("omits ownerDiscordUserId when user has discordPingEnabled false", async () => {
    const db = makeDb();

    await notifyQualifyingPointsUpdate(SPORTS_SEASON_ID, SCORING_EVENT_ID, db as never);

    expect(findDiscordIdsByUserIds).toHaveBeenCalledWith([]);
    expect(sendQualifyingPointsUpdateNotification).toHaveBeenCalledWith(
      expect.objectContaining({
        entries: [expect.objectContaining({ ownerDiscordUserId: undefined })],
      })
    );
  });

  it("participantIdFilter limits notification to only specified participants", async () => {
    const db = makeDb({
      eventResults: {
        findMany: vi.fn().mockResolvedValue([
          { seasonParticipantId: PARTICIPANT_ID, qualifyingPointsAwarded: "10" },
          { seasonParticipantId: "p-2", qualifyingPointsAwarded: "5" },
        ]),
      },
      draftPicks: {
        findMany: vi.fn().mockResolvedValue([
          { participantId: PARTICIPANT_ID, seasonId: SEASON_ID, team: { name: "Alpha FC", ownerId: null } },
          { participantId: "p-2", seasonId: SEASON_ID, team: { name: "Beta FC", ownerId: null } },
        ]),
      },
      seasonParticipants: {
        findMany: vi.fn().mockResolvedValue([
          { id: PARTICIPANT_ID, name: "Carlos Alcaraz" },
          { id: "p-2", name: "Rafael Nadal" },
        ]),
      },
    });

    await notifyQualifyingPointsUpdate(
      SPORTS_SEASON_ID,
      SCORING_EVENT_ID,
      db as never,
      new Set([PARTICIPANT_ID])
    );

    const call = vi.mocked(sendQualifyingPointsUpdateNotification).mock.calls[0][0];
    expect(call.entries).toHaveLength(1);
    expect(call.entries[0].participantName).toBe("Carlos Alcaraz");
  });

  it("does not call sendQualifyingPointsUpdateNotification when all participants are filtered out", async () => {
    const db = makeDb();

    await notifyQualifyingPointsUpdate(
      SPORTS_SEASON_ID,
      SCORING_EVENT_ID,
      db as never,
      new Set(["p-nonexistent"])
    );

    expect(sendQualifyingPointsUpdateNotification).not.toHaveBeenCalled();
  });

  // A knocked-out drafted player (e.g. a 2nd-round loser) earns no QP and so has
  // no event_results row — surfaced only via the eliminatedParticipantIds arg.
  const MENSIK_ID = "p-2";
  function makeDbWithEliminated() {
    return makeDb({
      draftPicks: {
        findMany: vi.fn().mockResolvedValue([
          {
            participantId: PARTICIPANT_ID,
            seasonId: SEASON_ID,
            team: { id: "t-1", name: "Alpha FC", ownerId: OWNER_ID },
          },
          {
            participantId: MENSIK_ID,
            seasonId: SEASON_ID,
            team: { id: "t-1", name: "Alpha FC", ownerId: OWNER_ID },
          },
        ]),
      },
      seasonParticipants: {
        findMany: vi.fn().mockResolvedValue([
          { id: PARTICIPANT_ID, name: "Carlos Alcaraz" },
          { id: MENSIK_ID, name: "Jakob Mensik" },
        ]),
      },
    });
  }

  it("announces a knocked-out drafted player who earned no QP", async () => {
    const db = makeDbWithEliminated();

    await notifyQualifyingPointsUpdate(
      SPORTS_SEASON_ID,
      SCORING_EVENT_ID,
      db as never,
      new Set([PARTICIPANT_ID]),
      new Set([MENSIK_ID])
    );

    expect(sendQualifyingPointsUpdateNotification).toHaveBeenCalledWith(
      expect.objectContaining({
        eliminated: [
          expect.objectContaining({ participantName: "Jakob Mensik", ownerUsername: "chris" }),
        ],
      })
    );
  });

  it("does not announce a knocked-out player who is not drafted in the league", async () => {
    const db = makeDb();

    await notifyQualifyingPointsUpdate(
      SPORTS_SEASON_ID,
      SCORING_EVENT_ID,
      db as never,
      new Set([PARTICIPANT_ID]),
      new Set(["p-undrafted"])
    );

    const call = vi.mocked(sendQualifyingPointsUpdateNotification).mock.calls[0][0];
    expect(call.eliminated).toEqual([]);
  });

  it("does not double-list a QP earner that is also passed as eliminated", async () => {
    const db = makeDb();

    // PARTICIPANT_ID earned 10 QP this sync AND is passed as eliminated
    // (e.g. a Round-of-16 loss). It should stay in entries, not the eliminated list.
    await notifyQualifyingPointsUpdate(
      SPORTS_SEASON_ID,
      SCORING_EVENT_ID,
      db as never,
      new Set([PARTICIPANT_ID]),
      new Set([PARTICIPANT_ID])
    );

    const call = vi.mocked(sendQualifyingPointsUpdateNotification).mock.calls[0][0];
    expect(call.entries).toHaveLength(1);
    expect(call.eliminated).toEqual([]);
  });

  it("short-circuits before the QP-total/season lookups when nothing drafted is involved", async () => {
    // A knockout occurred but the player isn't drafted in any league. The notifier
    // is invoked (the sync fires it on any elimination) but must not run the rest
    // of its query battery just to send nothing.
    const db = makeDb({
      draftPicks: { findMany: vi.fn().mockResolvedValue([]) },
    });

    await notifyQualifyingPointsUpdate(
      SPORTS_SEASON_ID,
      SCORING_EVENT_ID,
      db as never,
      new Set(["p-nonexistent"]),
      new Set(["p-undrafted"])
    );

    expect(db.query.draftPicks.findMany).toHaveBeenCalledOnce();
    expect(db.query.seasonParticipantQualifyingTotals.findMany).not.toHaveBeenCalled();
    expect(db.query.seasons.findMany).not.toHaveBeenCalled();
    expect(db.query.seasonParticipants.findMany).not.toHaveBeenCalled();
    expect(sendQualifyingPointsUpdateNotification).not.toHaveBeenCalled();
  });

  it("fires when a drafted player is knocked out even though no QP changed", async () => {
    const db = makeDbWithEliminated();

    // participantIdFilter matches nobody → no QP entries, but a knockout exists.
    await notifyQualifyingPointsUpdate(
      SPORTS_SEASON_ID,
      SCORING_EVENT_ID,
      db as never,
      new Set(["p-nonexistent"]),
      new Set([MENSIK_ID])
    );

    expect(sendQualifyingPointsUpdateNotification).toHaveBeenCalledOnce();
    const call = vi.mocked(sendQualifyingPointsUpdateNotification).mock.calls[0][0];
    expect(call.entries).toEqual([]);
    expect(call.eliminated).toEqual([
      expect.objectContaining({ participantName: "Jakob Mensik" }),
    ]);
  });
});