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

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

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

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

import { notifyPickMadeOnDiscord } from "../draft-discord.server";
import { sendPickAnnouncementNotification } from "~/services/discord";
import { findDiscordIdsByUserIds } from "~/models/account";

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

const SEASON_ID = "season-1";
const LEAGUE_ID = "league-1";
const TEAM_ID = "team-1";
const NEXT_TEAM_ID = "team-2";
const NEXT_OWNER_ID = "owner-2";
const WEBHOOK_URL = "https://discord.com/api/webhooks/123/abc";

/** 2-team draft; snake: pick 1→team1, pick 2→team2, pick 3→team2, pick 4→team1 */
const DRAFT_SLOTS = [
  { teamId: TEAM_ID, draftOrder: 1 },
  { teamId: NEXT_TEAM_ID, draftOrder: 2 },
];

const BASE_PARAMS = {
  seasonId: SEASON_ID,
  leagueId: LEAGUE_ID,
  pickedTeamName: "Alpha FC",
  participantName: "Erling Haaland",
  sportName: "Soccer",
  pickNumber: 1,
  nextPickNumber: 2,
  round: 1,
  rawPickInRound: 1,
  isDraftComplete: false,
  totalTeams: 2,
  draftSlots: DRAFT_SLOTS,
};

function makeLeague(overrides: object = {}) {
  return {
    id: LEAGUE_ID,
    discordWebhookUrl: WEBHOOK_URL,
    discordPicksAnnouncementEnabled: true,
    ...overrides,
  };
}

function makeTeam(id: string, ownerId: string | null = null, name = "Beta United") {
  return { id, name, ownerId };
}

function makeOwner(id: string, discordPingEnabled = true) {
  return { id, discordPingEnabled };
}

function makeMockDb(overrides: {
  league?: object | null;
  nextTeam?: object | null;
  owner?: object | null;
} = {}) {
  const league = "league" in overrides ? overrides.league : makeLeague();
  const nextTeam = "nextTeam" in overrides ? overrides.nextTeam : makeTeam(NEXT_TEAM_ID, NEXT_OWNER_ID);
  const owner = "owner" in overrides ? overrides.owner : makeOwner(NEXT_OWNER_ID);

  return {
    query: {
      leagues: { findFirst: vi.fn().mockResolvedValue(league) },
      teams: { findFirst: vi.fn().mockResolvedValue(nextTeam) },
      users: { findFirst: vi.fn().mockResolvedValue(owner) },
    },
  };
}

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

beforeEach(() => {
  vi.clearAllMocks();
  vi.mocked(sendPickAnnouncementNotification).mockResolvedValue(undefined);
  process.env.APP_URL = "https://test.brackt.com";
});

afterEach(() => {
  delete process.env.APP_URL;
});

describe("notifyPickMadeOnDiscord", () => {
  it("returns early when league has no webhook URL", async () => {
    const db = makeMockDb({ league: makeLeague({ discordWebhookUrl: null }) });

    await notifyPickMadeOnDiscord({ ...BASE_PARAMS, db: db as never });

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

  it("returns early when picks announcement toggle is disabled", async () => {
    const db = makeMockDb({ league: makeLeague({ discordPicksAnnouncementEnabled: false }) });

    await notifyPickMadeOnDiscord({ ...BASE_PARAMS, db: db as never });

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

  it("returns early when league is not found", async () => {
    const db = makeMockDb({ league: null });

    await notifyPickMadeOnDiscord({ ...BASE_PARAMS, db: db as never });

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

  it("sends announcement with correct pick details", async () => {
    const db = makeMockDb();

    await notifyPickMadeOnDiscord({ ...BASE_PARAMS, db: db as never });

    expect(sendPickAnnouncementNotification).toHaveBeenCalledWith(
      expect.objectContaining({
        webhookUrl: WEBHOOK_URL,
        pickedTeamName: "Alpha FC",
        participantName: "Erling Haaland",
        sportName: "Soccer",
        pickNumber: 1,
        round: 1,
        pickInRound: 1,
        isDraftComplete: false,
      })
    );
  });

  it("builds the draft URL from APP_URL env var", async () => {
    const db = makeMockDb();

    await notifyPickMadeOnDiscord({ ...BASE_PARAMS, db: db as never });

    expect(sendPickAnnouncementNotification).toHaveBeenCalledWith(
      expect.objectContaining({
        draftUrl: `https://test.brackt.com/leagues/${LEAGUE_ID}/draft/${SEASON_ID}`,
      })
    );
  });

  it("passes nextTeamName based on caller-supplied nextPickNumber", async () => {
    // pick 3 in a 2-team snake: round 2 (reversed) → draftOrder 2 → NEXT_TEAM_ID → "Beta United"
    const db = makeMockDb();

    await notifyPickMadeOnDiscord({ ...BASE_PARAMS, nextPickNumber: 3, db: db as never });

    expect(sendPickAnnouncementNotification).toHaveBeenCalledWith(
      expect.objectContaining({ nextTeamName: "Beta United" })
    );
  });

  it("uses caller-supplied nextPickNumber instead of reading from DB", async () => {
    const db = makeMockDb();

    await notifyPickMadeOnDiscord({ ...BASE_PARAMS, db: db as never });

    expect((db.query as Record<string, unknown>).seasons).toBeUndefined();
  });

  it("shows the immediate next drafter, not the post-autodraft-chain drafter", async () => {
    // Regression: manual pick #1 by alpha; beta immediately autodrafts (#2); DB advances to pick #3.
    // Discord for pick #1 must show beta ("On the clock: beta"), not gamma.
    // Uses a 3-team snake: pick 1→alpha, pick 2→beta, pick 3→gamma.
    const ALPHA_ID = "team-alpha";
    const BETA_ID = "team-beta";
    const GAMMA_ID = "team-gamma";
    const threeTeamSlots = [
      { teamId: ALPHA_ID, draftOrder: 1 },
      { teamId: BETA_ID, draftOrder: 2 },
      { teamId: GAMMA_ID, draftOrder: 3 },
    ];
    const betaTeam = { id: BETA_ID, name: "Beta Squad", ownerId: null };
    const db = makeMockDb({ nextTeam: betaTeam });

    await notifyPickMadeOnDiscord({
      ...BASE_PARAMS,
      pickNumber: 1,
      nextPickNumber: 2, // immediately after alpha's pick — before beta's autodraft
      totalTeams: 3,
      draftSlots: threeTeamSlots,
      db: db as never,
    });

    expect(sendPickAnnouncementNotification).toHaveBeenCalledWith(
      expect.objectContaining({ nextTeamName: "Beta Squad" })
    );
  });

  it("passes nextOwnerDiscordId when owner has discordPingEnabled", async () => {
    vi.mocked(findDiscordIdsByUserIds).mockResolvedValue(new Map([[NEXT_OWNER_ID, "discord-999"]]));
    const db = makeMockDb();

    await notifyPickMadeOnDiscord({ ...BASE_PARAMS, db: db as never });

    expect(sendPickAnnouncementNotification).toHaveBeenCalledWith(
      expect.objectContaining({ nextOwnerDiscordId: "discord-999" })
    );
  });

  it("omits nextOwnerDiscordId when owner has discordPingEnabled: false", async () => {
    const db = makeMockDb({ owner: makeOwner(NEXT_OWNER_ID, false) });

    await notifyPickMadeOnDiscord({ ...BASE_PARAMS, db: db as never });

    expect(findDiscordIdsByUserIds).not.toHaveBeenCalled();
    expect(sendPickAnnouncementNotification).toHaveBeenCalledWith(
      expect.objectContaining({ nextOwnerDiscordId: undefined })
    );
  });

  it("omits nextTeamName when next team has no owner", async () => {
    const db = makeMockDb({ nextTeam: makeTeam(NEXT_TEAM_ID, null) });

    await notifyPickMadeOnDiscord({ ...BASE_PARAMS, db: db as never });

    expect(sendPickAnnouncementNotification).toHaveBeenCalledWith(
      expect.objectContaining({ nextTeamName: "Beta United", nextOwnerDiscordId: undefined })
    );
  });

  it("skips next-team lookup and passes isDraftComplete: true when draft is done", async () => {
    const db = makeMockDb();

    await notifyPickMadeOnDiscord({ ...BASE_PARAMS, isDraftComplete: true, db: db as never });

    expect(db.query.teams.findFirst).not.toHaveBeenCalled();
    expect(sendPickAnnouncementNotification).toHaveBeenCalledWith(
      expect.objectContaining({ isDraftComplete: true, nextTeamName: undefined })
    );
  });

  it("suppresses errors thrown by sendPickAnnouncementNotification — caller's .catch handles them", async () => {
    vi.mocked(sendPickAnnouncementNotification).mockRejectedValue(new Error("webhook down"));
    const db = makeMockDb();

    // The function itself does NOT swallow errors; the caller chains .catch().
    await expect(
      notifyPickMadeOnDiscord({ ...BASE_PARAMS, db: db as never })
    ).rejects.toThrow("webhook down");
  });

  it("uses sequential (not snake-adjusted) pick number in Discord title for even rounds", async () => {
    // 13-team draft, pick #22: round 2 (even/reversed), rawPickInRound=9, snake-adjusted slot=5
    // Discord should say "Round 2, Pick 9" not "Round 2, Pick 5"
    const db = makeMockDb();

    await notifyPickMadeOnDiscord({
      ...BASE_PARAMS,
      pickNumber: 22,
      round: 2,
      rawPickInRound: 9,
      totalTeams: 13,
      db: db as never,
    });

    expect(sendPickAnnouncementNotification).toHaveBeenCalledWith(
      expect.objectContaining({ pickNumber: 22, round: 2, pickInRound: 9 })
    );
  });
});