/**
 * clear-bracket is the only path that can tear down a bracket, so the guard around it
 * matters: it discards recorded results and the placements derived from them.
 */

import { beforeEach, describe, expect, it, vi } from "vitest";
import {
  findPlayoffMatchesByEventId,
  deletePlayoffMatchesByEventId,
} from "~/models/playoff-match";
import { deleteParticipantResultsBySportsSeasonId } from "~/models/participant-result";
import { recalculateAffectedLeagues } from "~/models/scoring-calculator";
import { getScoringEventById } from "~/models/scoring-event";
import { action } from "../admin.sports-seasons.$id.events.$eventId.bracket.server";

vi.mock("~/models/scoring-event", async (importOriginal) => ({
  ...(await importOriginal<object>()),
  getScoringEventById: vi.fn(),
  updateScoringEvent: vi.fn(),
  isReadOnlySibling: vi.fn(() => false),
}));
vi.mock("~/models/playoff-match", async (importOriginal) => ({
  ...(await importOriginal<object>()),
  findPlayoffMatchesByEventId: vi.fn(),
  deletePlayoffMatchesByEventId: vi.fn(),
}));
vi.mock("~/models/participant-result", async (importOriginal) => ({
  ...(await importOriginal<object>()),
  deleteParticipantResultsBySportsSeasonId: vi.fn(),
}));
vi.mock("~/models/scoring-calculator", async (importOriginal) => ({
  ...(await importOriginal<object>()),
  recalculateAffectedLeagues: vi.fn(),
}));

const EVENT = { id: "event-1", sportsSeasonId: "season-1" };
const params = { id: "season-1", eventId: "event-1" };

function clearRequest(confirm?: string): Request {
  const body = new FormData();
  body.set("intent", "clear-bracket");
  if (confirm !== undefined) body.set("confirm", confirm);
  return new Request("http://localhost/clear", { method: "POST", body });
}

function match(isComplete: boolean) {
  return { id: `m-${Math.random()}`, isComplete };
}

// The action's real signature carries React Router's generated types; the clear path
// only reads request and params.
const run = (request: Request) =>
  (action as unknown as (args: { request: Request; params: typeof params }) => Promise<{
    error?: string;
    success?: string;
  }>)({ request, params });

describe("clear-bracket", () => {
  beforeEach(() => {
    vi.clearAllMocks();
    vi.mocked(getScoringEventById).mockResolvedValue(
      EVENT as unknown as Awaited<ReturnType<typeof getScoringEventById>>
    );
    vi.mocked(deletePlayoffMatchesByEventId).mockResolvedValue(undefined);
    vi.mocked(deleteParticipantResultsBySportsSeasonId).mockResolvedValue(undefined);
    vi.mocked(recalculateAffectedLeagues).mockResolvedValue(
      undefined as unknown as Awaited<ReturnType<typeof recalculateAffectedLeagues>>
    );
  });

  it("deletes the matches and the placements derived from them", async () => {
    vi.mocked(findPlayoffMatchesByEventId).mockResolvedValue([
      match(false),
      match(false),
    ] as unknown as Awaited<ReturnType<typeof findPlayoffMatchesByEventId>>);

    const result = await run(clearRequest());

    expect(result.success).toContain("2 match(es) removed");
    expect(deletePlayoffMatchesByEventId).toHaveBeenCalledWith("event-1");
    expect(deleteParticipantResultsBySportsSeasonId).toHaveBeenCalledWith("season-1");
  });

  it("refuses to discard completed matches without confirmation", async () => {
    vi.mocked(findPlayoffMatchesByEventId).mockResolvedValue([
      match(true),
      match(false),
    ] as unknown as Awaited<ReturnType<typeof findPlayoffMatchesByEventId>>);

    const result = await run(clearRequest());

    expect(result.error).toContain("1 completed match(es)");
    expect(deletePlayoffMatchesByEventId).not.toHaveBeenCalled();
    expect(deleteParticipantResultsBySportsSeasonId).not.toHaveBeenCalled();
  });

  it("discards completed matches once confirmed", async () => {
    vi.mocked(findPlayoffMatchesByEventId).mockResolvedValue([
      match(true),
    ] as unknown as Awaited<ReturnType<typeof findPlayoffMatchesByEventId>>);

    const result = await run(clearRequest("true"));

    expect(result.success).toBeDefined();
    expect(deletePlayoffMatchesByEventId).toHaveBeenCalledWith("event-1");
  });

  it("rejects an event with no bracket rather than reporting a no-op success", async () => {
    vi.mocked(findPlayoffMatchesByEventId).mockResolvedValue(
      [] as unknown as Awaited<ReturnType<typeof findPlayoffMatchesByEventId>>
    );

    const result = await run(clearRequest("true"));

    expect(result.error).toContain("no bracket to clear");
    expect(deletePlayoffMatchesByEventId).not.toHaveBeenCalled();
  });
});