jest.mock('@angular/common/http', () => ({
  HttpClient: class {},
  HttpErrorResponse: class {},
}));

import { ChallengesStore } from '../../frontend/src/app/features/challenges/challenges.store';
import {
  BoardResponse,
  SolveResponse,
} from '../../frontend/src/app/features/challenges/challenges.pure';
import { of } from 'rxjs';

function makeBoard(solvedByMe: boolean): BoardResponse {
  return {
    columns: [
      {
        id: 'cat1',
        abbreviation: 'CRY',
        name: 'Cryptography',
        iconPath: '',
        cards: [
          {
            id: 'alpha',
            name: 'Alpha Cipher',
            descriptionMd: '',
            categoryId: 'cat1',
            categoryAbbreviation: 'CRY',
            categoryIconPath: '',
            difficulty: 'LOW',
            livePoints: 120,
            solveCount: 4,
            solvedByMe,
          },
        ],
      },
    ],
    solvedChallengeIds: solvedByMe ? ['alpha'] : [],
    perChallengeLivePoints: { alpha: 120 },
  };
}

function createStore(): {
  store: ChallengesStore;
  api: { getBoard: jest.Mock; submit: jest.Mock; getDetail: jest.Mock };
} {
  const api = {
    getBoard: jest.fn(),
    submit: jest.fn(),
    getDetail: jest.fn(),
  };
  const store = new ChallengesStore(api as any, { onDestroy: () => undefined } as any);
  return { store, api };
}

describe('ChallengesStore — per-user solvedByMe after logout/login', () => {
  it('reset() clears board, selectedDetail, myUserId and stops any SSE', () => {
    const { store, api } = createStore();
    api.getBoard.mockReturnValueOnce(of(makeBoard(true)));
    return store.load().then(() => {
      expect(store.board()).not.toBeNull();
      // wire a fake SSE source and ensure reset closes it
      const closed = { v: false };
      const fakeSrc: any = {
        addEventListener: () => undefined,
        close: () => { closed.v = true; },
      };
      store.wireSse(() => fakeSrc as any);
      store.reset();
      expect(store.board()).toBeNull();
      expect(store.selectedChallengeDetail()).toBeNull();
      expect(closed.v).toBe(true);
    });
  });

  it('setMyUserId with a different id flushes the previous board', async () => {
    const { store, api } = createStore();
    // Record PlayerA first, then load so the cached board is owned by PlayerA.
    store.setMyUserId('playerA');
    api.getBoard.mockReturnValueOnce(of(makeBoard(true)));
    await store.load();
    expect(store.findCard('alpha')?.solvedByMe).toBe(true);

    // Switching to PlayerB flushes the cached PlayerA board.
    api.getBoard.mockReturnValueOnce(of(makeBoard(false)));
    const prev = store.setMyUserId('playerB');
    expect(prev).toBe('playerA');
    expect(store.board()).toBeNull();

    await store.load();
    expect(store.findCard('alpha')?.solvedByMe).toBe(false);
  });

  it('preloaded board with no recorded user id is cleared when PlayerB id is set', async () => {
    const { store, api } = createStore();
    // Simulate the bug scenario: a board was loaded into the singleton
    // (e.g. by an earlier PlayerA session or by an SSR/refresh path that
    // fetched before setMyUserId ran) but no user id has been recorded yet.
    api.getBoard.mockReturnValueOnce(of(makeBoard(true)));
    await store.load();
    expect(store.findCard('alpha')).not.toBeNull();
    expect(store.findCard('alpha')!.solvedByMe).toBe(true);

    // First-ever setMyUserId for a new user must flush the orphan board.
    const prev = store.setMyUserId('playerB');
    expect(prev).toBeNull();
    expect(store.board()).toBeNull();
    expect(store.selectedChallengeDetail()).toBeNull();
    expect(store.findCard('alpha')).toBeNull();

    api.getBoard.mockReturnValueOnce(of(makeBoard(false)));
    await store.load();
    expect(store.findCard('alpha')!.solvedByMe).toBe(false);
  });

  it('applySolveEvent for another user does not flip solvedByMe from false to true', async () => {
    const { store, api } = createStore();
    store.setMyUserId('me');
    api.getBoard.mockReturnValueOnce(of(makeBoard(false)));
    await store.load();

    store.applySolveEvent({
      challengeId: 'alpha',
      playerId: 'someone-else',
      playerName: 'other',
      awardedPoints: 50,
      rankBonus: 0,
      awardedAtUtc: '2026-07-23T00:00:00.000Z',
      position: 5,
      livePoints: 110,
      solveCount: 5,
      initialPoints: 200,
      minimumPoints: 50,
      decaySolves: 10,
    });

    expect(store.findCard('alpha')!.solvedByMe).toBe(false);
  });

  it('applySubmitResponse always takes the server authoritative solvedByMe (no stale OR)', async () => {
    const { store, api } = createStore();
    store.setMyUserId('me');
    api.getBoard.mockReturnValueOnce(of(makeBoard(true)));
    await store.load();
    expect(store.findCard('alpha')!.solvedByMe).toBe(true);

    const resp: SolveResponse = {
      status: 'solved',
      challenge: {
        id: 'alpha',
        name: 'Alpha Cipher',
        descriptionMd: '',
        categoryId: 'cat1',
        categoryAbbreviation: 'CRY',
        categoryIconPath: '',
        difficulty: 'LOW',
        livePoints: 100,
        solveCount: 5,
        solvedByMe: false,
      },
      awarded: { basePoints: 100, rankBonus: 0, awardedPoints: 100, awardedAtUtc: '', position: 6 },
      solvers: [],
    };
    api.submit.mockReturnValueOnce(of(resp));
    await store.submit('alpha', 'flag{x}');
    expect(store.findCard('alpha')!.solvedByMe).toBe(false);
    expect(store.findCard('alpha')!.livePoints).toBe(100);
    expect(store.findCard('alpha')!.solveCount).toBe(5);
  });
});