import { describe, it, expect } from 'vitest';

import {
  RacingDomainInvariantError,
  RacingDomainValidationError,
} from '@gridpilot/racing/domain/errors/RacingDomainError';
import {
  Season,
  type SeasonStatus,
} from '@gridpilot/racing/domain/entities/Season';
import { SeasonScoringConfig } from '@gridpilot/racing/domain/value-objects/SeasonScoringConfig';
import {
  SeasonDropPolicy,
  type SeasonDropStrategy,
} from '@gridpilot/racing/domain/value-objects/SeasonDropPolicy';
import { SeasonStewardingConfig } from '@gridpilot/racing/domain/value-objects/SeasonStewardingConfig';

function createMinimalSeason(overrides?: Partial<Season> & { status?: SeasonStatus }) {
  return Season.create({
    id: 'season-1',
    leagueId: 'league-1',
    gameId: 'iracing',
    name: 'Test Season',
    status: overrides?.status ?? 'planned',
  });
}

describe('Season aggregate lifecycle', () => {
  it('transitions Planned → Active → Completed → Archived with timestamps', () => {
    const planned = createMinimalSeason({ status: 'planned' });

    const activated = planned.activate();
    expect(activated.status).toBe('active');
    expect(activated.startDate).toBeInstanceOf(Date);
    expect(activated.endDate).toBeUndefined();

    const completed = activated.complete();
    expect(completed.status).toBe('completed');
    expect(completed.startDate).toEqual(activated.startDate);
    expect(completed.endDate).toBeInstanceOf(Date);

    const archived = completed.archive();
    expect(archived.status).toBe('archived');
    expect(archived.startDate).toEqual(completed.startDate);
    expect(archived.endDate).toEqual(completed.endDate);
  });

  it('throws when activating a non-planned season', () => {
    const active = createMinimalSeason({ status: 'active' });
    const completed = createMinimalSeason({ status: 'completed' });
    const archived = createMinimalSeason({ status: 'archived' });
    const cancelled = createMinimalSeason({ status: 'cancelled' });

    expect(() => active.activate()).toThrow(RacingDomainInvariantError);
    expect(() => completed.activate()).toThrow(RacingDomainInvariantError);
    expect(() => archived.activate()).toThrow(RacingDomainInvariantError);
    expect(() => cancelled.activate()).toThrow(RacingDomainInvariantError);
  });

  it('throws when completing a non-active season', () => {
    const planned = createMinimalSeason({ status: 'planned' });
    const completed = createMinimalSeason({ status: 'completed' });
    const archived = createMinimalSeason({ status: 'archived' });
    const cancelled = createMinimalSeason({ status: 'cancelled' });

    expect(() => planned.complete()).toThrow(RacingDomainInvariantError);
    expect(() => completed.complete()).toThrow(RacingDomainInvariantError);
    expect(() => archived.complete()).toThrow(RacingDomainInvariantError);
    expect(() => cancelled.complete()).toThrow(RacingDomainInvariantError);
  });

  it('throws when archiving a non-completed season', () => {
    const planned = createMinimalSeason({ status: 'planned' });
    const active = createMinimalSeason({ status: 'active' });
    const archived = createMinimalSeason({ status: 'archived' });
    const cancelled = createMinimalSeason({ status: 'cancelled' });

    expect(() => planned.archive()).toThrow(RacingDomainInvariantError);
    expect(() => active.archive()).toThrow(RacingDomainInvariantError);
    expect(() => archived.archive()).toThrow(RacingDomainInvariantError);
    expect(() => cancelled.archive()).toThrow(RacingDomainInvariantError);
  });

  it('allows cancelling planned or active seasons and rejects completed/archived', () => {
    const planned = createMinimalSeason({ status: 'planned' });
    const active = createMinimalSeason({ status: 'active' });
    const completed = createMinimalSeason({ status: 'completed' });
    const archived = createMinimalSeason({ status: 'archived' });

    const cancelledFromPlanned = planned.cancel();
    expect(cancelledFromPlanned.status).toBe('cancelled');
    expect(cancelledFromPlanned.startDate).toBe(planned.startDate);
    expect(cancelledFromPlanned.endDate).toBeInstanceOf(Date);

    const cancelledFromActive = active.cancel();
    expect(cancelledFromActive.status).toBe('cancelled');
    expect(cancelledFromActive.startDate).toBe(active.startDate);
    expect(cancelledFromActive.endDate).toBeInstanceOf(Date);

    expect(() => completed.cancel()).toThrow(RacingDomainInvariantError);
    expect(() => archived.cancel()).toThrow(RacingDomainInvariantError);
  });

  it('cancel is idempotent for already cancelled seasons', () => {
    const planned = createMinimalSeason({ status: 'planned' });
    const cancelled = planned.cancel();

    const cancelledAgain = cancelled.cancel();
    expect(cancelledAgain).toBe(cancelled);
  });

  it('canWithdrawFromWallet only when completed', () => {
    const planned = createMinimalSeason({ status: 'planned' });
    const active = createMinimalSeason({ status: 'active' });
    const completed = createMinimalSeason({ status: 'completed' });
    const archived = createMinimalSeason({ status: 'archived' });
    const cancelled = createMinimalSeason({ status: 'cancelled' });

    expect(planned.canWithdrawFromWallet()).toBe(false);
    expect(active.canWithdrawFromWallet()).toBe(false);
    expect(completed.canWithdrawFromWallet()).toBe(true);
    expect(archived.canWithdrawFromWallet()).toBe(false);
    expect(cancelled.canWithdrawFromWallet()).toBe(false);
  });
});

describe('Season configuration updates', () => {
  function createBaseSeason() {
    return Season.create({
      id: 'season-1',
      leagueId: 'league-1',
      gameId: 'iracing',
      name: 'Config Season',
      status: 'planned',
      startDate: new Date('2025-01-01T00:00:00Z'),
      endDate: undefined,
      maxDrivers: 24,
    });
  }

  it('withScoringConfig returns a new Season with updated scoringConfig only', () => {
    const season = createBaseSeason();
    const scoringConfig = new SeasonScoringConfig({
      scoringPresetId: 'sprint-main-driver',
      customScoringEnabled: true,
    });

    const updated = season.withScoringConfig(scoringConfig);

    expect(updated).not.toBe(season);
    expect(updated.scoringConfig).toBe(scoringConfig);
    expect(updated.schedule).toBe(season.schedule);
    expect(updated.dropPolicy).toBe(season.dropPolicy);
    expect(updated.stewardingConfig).toBe(season.stewardingConfig);
    expect(updated.maxDrivers).toBe(season.maxDrivers);
  });

  it('withDropPolicy returns a new Season with updated dropPolicy only', () => {
    const season = createBaseSeason();
    const dropPolicy = new SeasonDropPolicy({
      strategy: 'bestNResults',
      n: 3,
    });

    const updated = season.withDropPolicy(dropPolicy);

    expect(updated).not.toBe(season);
    expect(updated.dropPolicy).toBe(dropPolicy);
    expect(updated.scoringConfig).toBe(season.scoringConfig);
    expect(updated.schedule).toBe(season.schedule);
    expect(updated.stewardingConfig).toBe(season.stewardingConfig);
    expect(updated.maxDrivers).toBe(season.maxDrivers);
  });

  it('withStewardingConfig returns a new Season with updated stewardingConfig only', () => {
    const season = createBaseSeason();
    const stewardingConfig = new SeasonStewardingConfig({
      decisionMode: 'steward_vote',
      requiredVotes: 3,
      requireDefense: true,
      defenseTimeLimit: 24,
      voteTimeLimit: 24,
      protestDeadlineHours: 48,
      stewardingClosesHours: 72,
      notifyAccusedOnProtest: true,
      notifyOnVoteRequired: true,
    });

    const updated = season.withStewardingConfig(stewardingConfig);

    expect(updated).not.toBe(season);
    expect(updated.stewardingConfig).toBe(stewardingConfig);
    expect(updated.scoringConfig).toBe(season.scoringConfig);
    expect(updated.schedule).toBe(season.schedule);
    expect(updated.dropPolicy).toBe(season.dropPolicy);
    expect(updated.maxDrivers).toBe(season.maxDrivers);
  });

  it('withMaxDrivers updates maxDrivers when positive', () => {
    const season = createBaseSeason();

    const updated = season.withMaxDrivers(30);

    expect(updated.maxDrivers).toBe(30);
    expect(updated.id).toBe(season.id);
    expect(updated.leagueId).toBe(season.leagueId);
    expect(updated.gameId).toBe(season.gameId);
  });

  it('withMaxDrivers allows undefined to clear value', () => {
    const season = createBaseSeason();

    const updated = season.withMaxDrivers(undefined);

    expect(updated.maxDrivers).toBeUndefined();
  });

  it('withMaxDrivers rejects non-positive values', () => {
    const season = createBaseSeason();

    expect(() => season.withMaxDrivers(0)).toThrow(
      RacingDomainValidationError,
    );
    expect(() => season.withMaxDrivers(-5)).toThrow(
      RacingDomainValidationError,
    );
  });
});

describe('SeasonScoringConfig', () => {
  it('constructs from preset id and customScoringEnabled', () => {
    const config = new SeasonScoringConfig({
      scoringPresetId: 'club-default',
      customScoringEnabled: true,
    });

    expect(config.scoringPresetId).toBe('club-default');
    expect(config.customScoringEnabled).toBe(true);
    expect(config.props.scoringPresetId).toBe('club-default');
    expect(config.props.customScoringEnabled).toBe(true);
  });

  it('normalizes customScoringEnabled to false when omitted', () => {
    const config = new SeasonScoringConfig({
      scoringPresetId: 'sprint-main-driver',
    });

    expect(config.customScoringEnabled).toBe(false);
    expect(config.props.customScoringEnabled).toBeUndefined();
  });

  it('throws when scoringPresetId is empty', () => {
    expect(
      () =>
        new SeasonScoringConfig({
          // @ts-expect-error intentional invalid input
          scoringPresetId: '  ',
        }),
    ).toThrow(RacingDomainValidationError);
  });

  it('equals compares by preset id and customScoringEnabled', () => {
    const a = new SeasonScoringConfig({
      scoringPresetId: 'club-default',
      customScoringEnabled: false,
    });
    const b = new SeasonScoringConfig({
      scoringPresetId: 'club-default',
      customScoringEnabled: false,
    });
    const c = new SeasonScoringConfig({
      scoringPresetId: 'club-default',
      customScoringEnabled: true,
    });

    expect(a.equals(b)).toBe(true);
    expect(a.equals(c)).toBe(false);
  });
});

describe('SeasonDropPolicy', () => {
  it('allows strategy "none" with undefined n', () => {
    const policy = new SeasonDropPolicy({ strategy: 'none' });

    expect(policy.strategy).toBe('none');
    expect(policy.n).toBeUndefined();
  });

  it('throws when strategy "none" has n defined', () => {
    expect(
      () =>
        new SeasonDropPolicy({
          strategy: 'none',
          n: 1,
        }),
    ).toThrow(RacingDomainValidationError);
  });

  it('requires positive integer n for "bestNResults" and "dropWorstN"', () => {
    const strategies: SeasonDropStrategy[] = ['bestNResults', 'dropWorstN'];

    for (const strategy of strategies) {
      expect(
        () =>
          new SeasonDropPolicy({
            strategy,
            n: 0,
          }),
      ).toThrow(RacingDomainValidationError);

      expect(
        () =>
          new SeasonDropPolicy({
            strategy,
            n: -1,
          }),
      ).toThrow(RacingDomainValidationError);
    }

    const okBest = new SeasonDropPolicy({
      strategy: 'bestNResults',
      n: 3,
    });
    const okDrop = new SeasonDropPolicy({
      strategy: 'dropWorstN',
      n: 2,
    });

    expect(okBest.n).toBe(3);
    expect(okDrop.n).toBe(2);
  });

  it('equals compares strategy and n', () => {
    const a = new SeasonDropPolicy({ strategy: 'none' });
    const b = new SeasonDropPolicy({ strategy: 'none' });
    const c = new SeasonDropPolicy({ strategy: 'bestNResults', n: 3 });

    expect(a.equals(b)).toBe(true);
    expect(a.equals(c)).toBe(false);
  });
});

describe('SeasonStewardingConfig', () => {
  it('creates a valid config with voting mode and requiredVotes', () => {
    const config = new SeasonStewardingConfig({
      decisionMode: 'steward_vote',
      requiredVotes: 3,
      requireDefense: true,
      defenseTimeLimit: 24,
      voteTimeLimit: 24,
      protestDeadlineHours: 48,
      stewardingClosesHours: 72,
      notifyAccusedOnProtest: true,
      notifyOnVoteRequired: true,
    });

    expect(config.decisionMode).toBe('steward_vote');
    expect(config.requiredVotes).toBe(3);
    expect(config.requireDefense).toBe(true);
    expect(config.defenseTimeLimit).toBe(24);
    expect(config.voteTimeLimit).toBe(24);
    expect(config.protestDeadlineHours).toBe(48);
    expect(config.stewardingClosesHours).toBe(72);
    expect(config.notifyAccusedOnProtest).toBe(true);
    expect(config.notifyOnVoteRequired).toBe(true);
  });

  it('throws when decisionMode is missing', () => {
    expect(
      () =>
        new SeasonStewardingConfig({
          // @ts-expect-error intentional invalid
          decisionMode: undefined,
          requireDefense: true,
          defenseTimeLimit: 24,
          voteTimeLimit: 24,
          protestDeadlineHours: 48,
          stewardingClosesHours: 72,
          notifyAccusedOnProtest: true,
          notifyOnVoteRequired: true,
        }),
    ).toThrow(RacingDomainValidationError);
  });

  it('requires requiredVotes for voting/veto modes', () => {
    const votingModes = [
      'steward_vote',
      'member_vote',
      'steward_veto',
      'member_veto',
    ] as const;

    for (const mode of votingModes) {
      expect(
        () =>
          new SeasonStewardingConfig({
            decisionMode: mode,
            // @ts-expect-error intentional invalid
            requiredVotes: undefined,
            requireDefense: true,
            defenseTimeLimit: 24,
            voteTimeLimit: 24,
            protestDeadlineHours: 48,
            stewardingClosesHours: 72,
            notifyAccusedOnProtest: true,
            notifyOnVoteRequired: true,
          }),
      ).toThrow(RacingDomainValidationError);
    }
  });

  it('validates numeric limits as non-negative / positive integers', () => {
    expect(
      () =>
        new SeasonStewardingConfig({
          decisionMode: 'steward_decides',
          requireDefense: true,
          defenseTimeLimit: -1,
          voteTimeLimit: 24,
          protestDeadlineHours: 48,
          stewardingClosesHours: 72,
          notifyAccusedOnProtest: true,
          notifyOnVoteRequired: true,
        }),
    ).toThrow(RacingDomainValidationError);

    expect(
      () =>
        new SeasonStewardingConfig({
          decisionMode: 'steward_decides',
          requireDefense: true,
          defenseTimeLimit: 24,
          voteTimeLimit: 0,
          protestDeadlineHours: 48,
          stewardingClosesHours: 72,
          notifyAccusedOnProtest: true,
          notifyOnVoteRequired: true,
        }),
    ).toThrow(RacingDomainValidationError);

    expect(
      () =>
        new SeasonStewardingConfig({
          decisionMode: 'steward_decides',
          requireDefense: true,
          defenseTimeLimit: 24,
          voteTimeLimit: 24,
          protestDeadlineHours: 0,
          stewardingClosesHours: 72,
          notifyAccusedOnProtest: true,
          notifyOnVoteRequired: true,
        }),
    ).toThrow(RacingDomainValidationError);

    expect(
      () =>
        new SeasonStewardingConfig({
          decisionMode: 'steward_decides',
          requireDefense: true,
          defenseTimeLimit: 24,
          voteTimeLimit: 24,
          protestDeadlineHours: 48,
          stewardingClosesHours: 0,
          notifyAccusedOnProtest: true,
          notifyOnVoteRequired: true,
        }),
    ).toThrow(RacingDomainValidationError);
  });

  it('equals compares all props', () => {
    const a = new SeasonStewardingConfig({
      decisionMode: 'steward_vote',
      requiredVotes: 3,
      requireDefense: true,
      defenseTimeLimit: 24,
      voteTimeLimit: 24,
      protestDeadlineHours: 48,
      stewardingClosesHours: 72,
      notifyAccusedOnProtest: true,
      notifyOnVoteRequired: true,
    });

    const b = new SeasonStewardingConfig({
      decisionMode: 'steward_vote',
      requiredVotes: 3,
      requireDefense: true,
      defenseTimeLimit: 24,
      voteTimeLimit: 24,
      protestDeadlineHours: 48,
      stewardingClosesHours: 72,
      notifyAccusedOnProtest: true,
      notifyOnVoteRequired: true,
    });

    const c = new SeasonStewardingConfig({
      decisionMode: 'steward_decides',
      requireDefense: false,
      defenseTimeLimit: 0,
      voteTimeLimit: 24,
      protestDeadlineHours: 24,
      stewardingClosesHours: 48,
      notifyAccusedOnProtest: false,
      notifyOnVoteRequired: false,
    });

    expect(a.equals(b)).toBe(true);
    expect(a.equals(c)).toBe(false);
  });
});