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

vi.mock("../scoring-calculator", () => ({
  recalculateAffectedLeagues: vi.fn(),
}));

vi.mock("../qualifying-points", async (importOriginal) => {
  const actual = await importOriginal();
  return {
    ...(actual as Record<string, unknown>),
    recalculateParticipantQP: vi.fn(),
  };
});

import { deleteScoringEvent } from "../scoring-event";

describe("deleteScoringEvent", () => {
  it("decrements majorsCompleted for a processed zero-QP qualifying event", async () => {
    const setCalls: unknown[] = [];
    const deleteChain = { where: vi.fn().mockResolvedValue(undefined) };
    const updateChain = {
      set: vi.fn((values: unknown) => {
        setCalls.push(values);
        return { where: vi.fn().mockResolvedValue(undefined) };
      }),
    };
    const db = {
      query: {
        scoringEvents: {
          findFirst: vi.fn().mockResolvedValue({
            id: "event-1",
            sportsSeasonId: "sports-season-1",
            eventType: "major_tournament",
            isQualifyingEvent: true,
          }),
        },
        eventResults: {
          findMany: vi.fn().mockResolvedValue([
            {
              seasonParticipantId: "participant-1",
              placement: 20,
              qualifyingPointsAwarded: "0.00",
            },
          ]),
        },
        sportsSeasons: {
          findFirst: vi.fn().mockResolvedValue({
            id: "sports-season-1",
            majorsCompleted: 1,
          }),
        },
      },
      transaction: vi.fn(async (callback) => callback(db)),
      delete: vi.fn(() => deleteChain),
      update: vi.fn(() => updateChain),
    } as any;

    await deleteScoringEvent("event-1", db);

    expect(setCalls).toEqual(
      expect.arrayContaining([
        expect.objectContaining({ majorsCompleted: 0 }),
      ])
    );
  });

  describe("shared tournament handling", () => {
    // Builds a mock db for a non-qualifying schedule_event linked to a tournament,
    // so the delete skips the QP/league branches and exercises only the
    // shared-tournament bookkeeping.
    function makeSharedDb({
      deletedEvent,
      remaining,
      siblingTournamentId = "tournament-1",
    }: {
      deletedEvent: { tournamentId: string | null; isPrimary: boolean };
      remaining: Array<{ id: string; isPrimary: boolean }>;
      siblingTournamentId?: string;
    }) {
      const findFirst = vi
        .fn()
        // 1st call: the event being deleted
        .mockResolvedValueOnce({
          id: "event-1",
          sportsSeasonId: "sports-season-1",
          eventType: "schedule_event",
          isQualifyingEvent: false,
          ...deletedEvent,
        })
        // subsequent calls: setPrimaryEvent looking up the promoted event
        .mockResolvedValue({ id: "promoted", tournamentId: siblingTournamentId });

      const deleteWhere = vi.fn().mockResolvedValue(undefined);
      const updateWhere = vi.fn().mockResolvedValue(undefined);
      const db = {
        query: {
          scoringEvents: {
            findFirst,
            findMany: vi.fn().mockResolvedValue(remaining),
          },
        },
        transaction: vi.fn(async (callback) => callback(db)),
        delete: vi.fn(() => ({ where: deleteWhere })),
        update: vi.fn(() => ({ set: vi.fn(() => ({ where: updateWhere })) })),
      } as any;
      return { db, deleteWhere };
    }

    it("keeps the tournament and promotes nothing when a non-primary window is deleted", async () => {
      const { db } = makeSharedDb({
        deletedEvent: { tournamentId: "tournament-1", isPrimary: false },
        remaining: [{ id: "event-2", isPrimary: true }],
      });

      const result = await deleteScoringEvent("event-1", db);

      expect(result.remainingWindows).toBe(1);
      expect(result.promotedPrimaryId).toBeNull();
      expect(result.deletedTournament).toBe(false);
    });

    it("does not promote a primary when a golf-style tournament (no primary) loses a window", async () => {
      // Golf-style shared majors intentionally have no primary window — every
      // linked event is isPrimary=false. Deleting one must not flip a sibling
      // into a primary, which would change its scoring/guard behavior.
      const { db } = makeSharedDb({
        deletedEvent: { tournamentId: "tournament-1", isPrimary: false },
        remaining: [
          { id: "event-2", isPrimary: false },
          { id: "event-3", isPrimary: false },
        ],
      });

      const result = await deleteScoringEvent("event-1", db);

      expect(result.promotedPrimaryId).toBeNull();
      expect(result.remainingWindows).toBe(2);
    });

    it("promotes the earliest remaining window when the primary window is deleted", async () => {
      const { db } = makeSharedDb({
        deletedEvent: { tournamentId: "tournament-1", isPrimary: true },
        // findMany is ordered asc(createdAt); first is the earliest.
        remaining: [
          { id: "event-2", isPrimary: false },
          { id: "event-3", isPrimary: false },
        ],
      });

      const result = await deleteScoringEvent("event-1", db);

      expect(result.promotedPrimaryId).toBe("event-2");
      expect(result.remainingWindows).toBe(2);
    });

    it("leaves the orphaned tournament intact when the last window is deleted without the flag", async () => {
      const { db } = makeSharedDb({
        deletedEvent: { tournamentId: "tournament-1", isPrimary: true },
        remaining: [],
      });

      const result = await deleteScoringEvent("event-1", db);

      expect(result.remainingWindows).toBe(0);
      expect(result.deletedTournament).toBe(false);
    });

    it("deletes the orphaned tournament when the last window is deleted with the flag", async () => {
      const { db } = makeSharedDb({
        deletedEvent: { tournamentId: "tournament-1", isPrimary: true },
        remaining: [],
      });

      const result = await deleteScoringEvent("event-1", db, {
        deleteOrphanTournament: true,
      });

      expect(result.deletedTournament).toBe(true);
    });
  });
});