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

import { ScoreboardStore } from '../../frontend/src/app/features/scoreboard/scoreboard.store';
import {
  EventLogRow,
  GraphView,
  MatrixView,
  RankingRow,
} from '../../frontend/src/app/features/scoreboard/scoreboard.pure';
import { Observable, of } from 'rxjs';

class FakeApi {
  rankingCallCount = 0;
  matrixCallCount = 0;
  eventLogCallCount = 0;
  graphCallCount = 0;

  getRanking(): Observable<RankingRow[]> {
    this.rankingCallCount += 1;
    return of<RankingRow[]>([
      { rank: 1, playerId: 'p1', playerName: 'p1', solvedCount: 1, points: 100, colorIndex: 0 },
    ]);
  }
  getMatrix(): Observable<MatrixView> {
    this.matrixCallCount += 1;
    return of<MatrixView>({ players: [], challenges: [], cells: {} });
  }
  getEventLog(): Observable<EventLogRow[]> {
    this.eventLogCallCount += 1;
    return of<EventLogRow[]>([
      { solveId: 's1', playerId: 'p1', playerName: 'p1', challengeId: 'c1', challengeName: 'alpha', categoryAbbreviation: 'CRY', position: 1, awardedPoints: 100, awardedAtUtc: '2025-01-01T00:00:00.000Z' },
    ]);
  }
  getGraph(): Observable<GraphView> {
    this.graphCallCount += 1;
    return of<GraphView>({
      startUtc: '2025-01-01T00:00:00.000Z',
      endUtc: '2025-01-02T00:00:00.000Z',
      serverNowUtc: '2025-01-01T00:00:00.000Z',
      state: 'running',
      series: [],
    });
  }
}

function makeFakeSse(handler: (type: string, payload: any) => void): any {
  return {
    addEventListener(type: string, fn: (ev: any) => void) {
      handler(type, fn);
    },
    close() {},
  };
}

describe('ScoreboardStore', () => {
  it('loadAll fetches all four projections once', async () => {
    const api = new FakeApi();
    const destroyRef: any = { onDestroy: () => {} };
    const store = new ScoreboardStore(api as any, destroyRef);
    await store.loadAll();
    expect(api.rankingCallCount).toBe(1);
    expect(api.matrixCallCount).toBe(1);
    expect(api.eventLogCallCount).toBe(1);
    expect(api.graphCallCount).toBe(1);
    await store.loadAll();
    expect(api.rankingCallCount).toBe(1);
  });

  it('applySolveEvent mutates ranking, eventLog, graph and matrix', () => {
    const api = new FakeApi();
    const destroyRef: any = { onDestroy: () => {} };
    const store = new ScoreboardStore(api as any, destroyRef);
    void store.loadAll();
    return new Promise<void>((resolve) => {
      const source = makeFakeSse((type, fn) => {
        if (type === 'solve') {
          setTimeout(() => {
            fn(new MessageEvent('solve', { data: JSON.stringify({
              challenge_id: 'c2',
              player_id: 'p1',
              player_name: 'p1',
              awarded_points: 25,
              rank_bonus: 0,
              awarded_at_utc: '2025-01-01T01:00:00.000Z',
              position: 4,
            }) }));
            setTimeout(() => {
              expect(store.ranking()?.[0]?.points).toBe(125);
              expect(store.eventLog()?.[0]?.awardedPoints).toBe(25);
              expect(store.graph()?.series[0]?.playerId).toBe('p1');
              resolve();
            }, 0);
          }, 0);
        }
      });
      store.wireSse(() => source);
    });
  });

  it('does not duplicate event-log rows on replayed solve frame', () => {
    const api = new FakeApi();
    const destroyRef: any = { onDestroy: () => {} };
    const store = new ScoreboardStore(api as any, destroyRef);
    void store.loadAll();
    return new Promise<void>((resolve) => {
      let fire: ((ev: any) => void) | null = null;
      const source = makeFakeSse((type, fn) => {
        if (type === 'solve') fire = fn;
      });
      store.wireSse(() => source);
      const payload = {
        challenge_id: 'c2',
        player_id: 'p1',
        player_name: 'p1',
        awarded_points: 25,
        rank_bonus: 0,
        awarded_at_utc: '2025-01-01T01:00:00.000Z',
        position: 4,
      };
      setTimeout(() => {
        fire!(new MessageEvent('solve', { data: JSON.stringify(payload) }));
        fire!(new MessageEvent('solve', { data: JSON.stringify(payload) }));
        setTimeout(() => {
          const log = store.eventLog() ?? [];
          const p1c2 = log.filter((r) => r.playerId === 'p1' && r.challengeId === 'c2');
          expect(p1c2.length).toBe(1);
          resolve();
        }, 0);
      }, 0);
    });
  });

  it('reset clears all signals and stops SSE', () => {
    const api = new FakeApi();
    const destroyRef: any = { onDestroy: () => {} };
    const store = new ScoreboardStore(api as any, destroyRef);
    void store.loadAll();
    store.reset();
    expect(store.ranking()).toBeNull();
    expect(store.matrix()).toBeNull();
    expect(store.eventLog()).toBeNull();
    expect(store.graph()).toBeNull();
  });
});