// apps/web/src/app/features/hunting/hunt-page/hunt-page.component.spec.ts
import { signal } from '@angular/core';
import { TestBed } from '@angular/core/testing';
import { Router, provideRouter } from '@angular/router';
import { vi } from 'vitest';
import type { Combat, CurrentLocationResponse, HuntResult } from '../../../core/api/game-api.models';
import { CombatStore } from '../../combat/combat.store';
import {
  burnedRoadFixture,
  southGateFixture,
} from '../../world/current-location.fixture';
import { WorldStore } from '../../world/world.store';
import { HuntingStore } from '../hunting.store';
import { HuntPageComponent } from './hunt-page.component';

const southGate = southGateFixture({ connections: [] });

const burnedRoad = burnedRoadFixture({ connections: [] });

const threeEncounterHunt: HuntResult = {
  id: 'hunt-id',
  location: { id: 'burned-road-id', key: 'burned-road', name: 'Burned Road' },
  encounters: [
    {
      id: 'encounter-1',
      monster: { key: 'ash-rat', name: 'Ash Rat', level: 1, artworkPath: '/images/enemies/AshRat.png' },
      dangerRating: 'WEAK',
      status: 'AVAILABLE',
    },
    {
      id: 'encounter-2',
      monster: {
        key: 'road-bandit',
        name: 'Road Bandit',
        level: 3,
        artworkPath: '/images/enemies/RoadBandit.png',
      },
      dangerRating: 'MATCH',
      status: 'AVAILABLE',
    },
    {
      id: 'encounter-3',
      monster: { key: 'ash-rat', name: 'Ash Rat', level: 1, artworkPath: '/images/enemies/AshRat.png' },
      dangerRating: 'WEAK',
      status: 'AVAILABLE',
    },
  ],
};

const startedCombat: Combat = {
  id: 'combat-2',
  status: 'ACTIVE',
  round: 1,
  player: { name: 'Aric Duskwalker', maxHp: 100, currentHp: 100, potionsRemaining: 2, potionsMax: 2 },
  monster: {
    key: 'road-bandit',
    name: 'Road Bandit',
    level: 3,
    maxHp: 75,
    currentHp: 75,
    artworkPath: '/images/enemies/RoadBandit.png',
    pendingIntent: null,
  },
  events: [],
  rewards: null,
};

describe('HuntPageComponent', () => {
  let worldStore: {
    currentLocation: ReturnType<typeof signal<CurrentLocationResponse | null>>;
    load: ReturnType<typeof vi.fn>;
  };
  let huntingStore: {
    currentHunt: ReturnType<typeof signal<HuntResult | null>>;
    loading: ReturnType<typeof signal<boolean>>;
    error: ReturnType<typeof signal<string | null>>;
    encounters: () => HuntResult['encounters'];
    startHunt: ReturnType<typeof vi.fn>;
    refreshHunt: ReturnType<typeof vi.fn>;
    loadActiveHunt: ReturnType<typeof vi.fn>;
    selectEncounter: ReturnType<typeof vi.fn>;
  };
  let combatStore: {
    combat: ReturnType<typeof signal<Combat | null>>;
    error: ReturnType<typeof signal<string | null>>;
    errorCode: ReturnType<typeof signal<string | null>>;
    startCombat: ReturnType<typeof vi.fn>;
    loadActiveCombat: ReturnType<typeof vi.fn>;
    clearError: ReturnType<typeof vi.fn>;
  };
  let router: Router;

  async function setup(location: CurrentLocationResponse | null, hunt: HuntResult | null = null) {
    worldStore = { currentLocation: signal(location), load: vi.fn(() => Promise.resolve()) };
    const currentHunt = signal(hunt);
    huntingStore = {
      currentHunt,
      loading: signal(false),
      error: signal<string | null>(null),
      encounters: () => currentHunt()?.encounters ?? [],
      startHunt: vi.fn(() => Promise.resolve()),
      refreshHunt: vi.fn(() => Promise.resolve()),
      loadActiveHunt: vi.fn(() => Promise.resolve()),
      selectEncounter: vi.fn(),
    };
    combatStore = {
      combat: signal<Combat | null>(null),
      error: signal<string | null>(null),
      errorCode: signal<string | null>(null),
      startCombat: vi.fn(() => Promise.resolve()),
      loadActiveCombat: vi.fn(() => Promise.resolve(null)),
      clearError: vi.fn(),
    };

    await TestBed.configureTestingModule({
      imports: [HuntPageComponent],
      providers: [
        provideRouter([]),
        { provide: WorldStore, useValue: worldStore },
        { provide: HuntingStore, useValue: huntingStore },
        { provide: CombatStore, useValue: combatStore },
      ],
    }).compileComponents();

    router = TestBed.inject(Router);
    vi.spyOn(router, 'navigate').mockResolvedValue(true);

    const fixture = TestBed.createComponent(HuntPageComponent);
    fixture.detectChanges();
    return fixture;
  }

  it('shows the hunting-unavailable state at the South Gate, with no Begin Hunt button, and a way back to the location', async () => {
    const fixture = await setup(southGate);
    const element = fixture.nativeElement as HTMLElement;

    expect(element.textContent).toContain('No Hunt Available');
    expect(element.textContent).toContain('No hunting ground is available here right now.');
    expect(
      Array.from(element.querySelectorAll('button')).some(
        (button) => button.textContent?.trim() === 'Begin Hunt',
      ),
    ).toBe(false);

    const backButton = element.querySelector<HTMLButtonElement>('[data-hunt-to-location]');
    expect(backButton?.textContent?.trim()).toBe('Back to Location');
    backButton?.click();

    expect(router.navigate).toHaveBeenCalledWith(['/location']);
  });

  it('calls startHunt when Begin Hunt is clicked at a hunting-enabled location', async () => {
    const fixture = await setup(burnedRoad);
    const element = fixture.nativeElement as HTMLElement;

    element.querySelector<HTMLButtonElement>('[data-hunt-start]')?.click();

    expect(huntingStore.startHunt).toHaveBeenCalledOnce();
  });

  it('renders 3 encounter cards, duplicates included, with the correct data', async () => {
    const fixture = await setup(burnedRoad, threeEncounterHunt);
    const element = fixture.nativeElement as HTMLElement;

    const cards = element.querySelectorAll('app-encounter-card');
    expect(cards.length).toBe(3);
    expect(element.textContent).toMatch(/Ash Rat[\s\S]*Road Bandit[\s\S]*Ash Rat/);
    expect(
      element.querySelectorAll(
        '.encounter-card__artwork[src="/images/combat/sprites/ash-rat-760.png"]',
      ).length,
    ).toBe(2);
    expect(
      element.querySelectorAll(
        '.encounter-card__artwork[src="/images/combat/sprites/road-bandit-620.png"]',
      ).length,
    ).toBe(1);
    expect(element.textContent).toContain('Level 1');
    expect(element.textContent).toContain('Level 3');
  });

  it('calls refreshHunt when Search Again is clicked', async () => {
    const fixture = await setup(burnedRoad, threeEncounterHunt);
    const element = fixture.nativeElement as HTMLElement;

    element.querySelector<HTMLButtonElement>('[data-hunt-refresh]')?.click();

    expect(huntingStore.refreshHunt).toHaveBeenCalledOnce();
  });

  it('starts a real combat from the encounter id (not the monster key) and navigates to /combat/:combatId', async () => {
    const fixture = await setup(burnedRoad, threeEncounterHunt);
    combatStore.startCombat.mockImplementation(async () => {
      combatStore.combat.set(startedCombat);
    });
    const element = fixture.nativeElement as HTMLElement;

    const attackButtons = Array.from(element.querySelectorAll('button')).filter(
      (button) => button.textContent?.trim() === 'Attack',
    );
    expect(attackButtons.length).toBe(3);

    attackButtons[1].click();
    await Promise.resolve();
    await Promise.resolve();

    expect(combatStore.startCombat).toHaveBeenCalledWith('encounter-2');
    expect(combatStore.startCombat).not.toHaveBeenCalledWith('road-bandit');
    expect(router.navigate).toHaveBeenCalledWith(['/combat', 'combat-2']);
  });

  it('does not navigate when starting the combat fails', async () => {
    const fixture = await setup(burnedRoad, threeEncounterHunt);
    const element = fixture.nativeElement as HTMLElement;

    const attackButtons = Array.from(element.querySelectorAll('button')).filter(
      (button) => button.textContent?.trim() === 'Attack',
    );
    attackButtons[0].click();
    await Promise.resolve();
    await Promise.resolve();

    expect(combatStore.startCombat).toHaveBeenCalledWith('encounter-1');
    expect(router.navigate).not.toHaveBeenCalledWith(['/combat', expect.anything()]);
  });

  it('rejoins the running combat when the attack is rejected with COMBAT_ALREADY_ACTIVE', async () => {
    const fixture = await setup(burnedRoad, threeEncounterHunt);
    combatStore.startCombat.mockImplementation(async () => {
      combatStore.errorCode.set('COMBAT_ALREADY_ACTIVE');
      combatStore.error.set("You're already in a combat.");
    });
    combatStore.loadActiveCombat.mockResolvedValue({ ...startedCombat, id: 'combat-running' });
    const element = fixture.nativeElement as HTMLElement;

    const attackButtons = Array.from(element.querySelectorAll('button')).filter(
      (button) => button.textContent?.trim() === 'Attack',
    );
    attackButtons[0].click();
    await Promise.resolve();
    await Promise.resolve();
    await Promise.resolve();

    expect(combatStore.loadActiveCombat).toHaveBeenCalledOnce();
    expect(router.navigate).toHaveBeenCalledWith(['/combat', 'combat-running']);
  });

  it('does not look for a running combat when the attack fails for another reason', async () => {
    const fixture = await setup(burnedRoad, threeEncounterHunt);
    combatStore.startCombat.mockImplementation(async () => {
      combatStore.errorCode.set('HUNT_ENCOUNTER_ALREADY_CONSUMED');
      combatStore.error.set('This encounter has already been used.');
    });
    const element = fixture.nativeElement as HTMLElement;

    const attackButtons = Array.from(element.querySelectorAll('button')).filter(
      (button) => button.textContent?.trim() === 'Attack',
    );
    attackButtons[0].click();
    await Promise.resolve();
    await Promise.resolve();
    await Promise.resolve();

    expect(combatStore.loadActiveCombat).not.toHaveBeenCalled();
    expect(router.navigate).not.toHaveBeenCalledWith(['/combat', expect.anything()]);
  });

  it('shows a combat-start error and dismisses it', async () => {
    const fixture = await setup(burnedRoad, threeEncounterHunt);
    combatStore.error.set("You're already in a combat.");
    fixture.detectChanges();

    const element = fixture.nativeElement as HTMLElement;
    const alerts = Array.from(element.querySelectorAll('[role="alert"]'));
    expect(alerts.some((alert) => alert.textContent?.includes("You're already in a combat."))).toBe(
      true,
    );

    element.querySelector<HTMLButtonElement>('[data-hunt-combat-dismiss]')?.click();

    expect(combatStore.clearError).toHaveBeenCalledOnce();
  });

  it('does not trigger a hunt automatically on page entry', async () => {
    await setup(burnedRoad);

    expect(huntingStore.startHunt).not.toHaveBeenCalled();
  });

  it('adopts the resumable hunt on page entry so cleared encounters stay marked', async () => {
    await setup(burnedRoad);

    expect(huntingStore.loadActiveHunt).toHaveBeenCalledOnce();
    expect(huntingStore.startHunt).not.toHaveBeenCalled();
  });

  it('marks a defeated encounter and takes away its attack action', async () => {
    const clearedHunt: HuntResult = {
      ...threeEncounterHunt,
      encounters: [
        { ...threeEncounterHunt.encounters[0], status: 'DEFEATED' },
        threeEncounterHunt.encounters[1],
        threeEncounterHunt.encounters[2],
      ],
    };
    const fixture = await setup(burnedRoad, clearedHunt);
    const element = fixture.nativeElement as HTMLElement;

    const cards = element.querySelectorAll('app-encounter-card');
    expect(cards[0].querySelector('.encounter-card__defeated-mark')).not.toBeNull();
    expect(cards[1].querySelector('.encounter-card__defeated-mark')).toBeNull();

    const attackButtons = Array.from(
      element.querySelectorAll<HTMLButtonElement>('.encounter-card__attack'),
    );
    expect(attackButtons[0].disabled).toBe(true);
    expect(attackButtons[1].disabled).toBe(false);
  });

  it('keeps an in-progress encounter unmarked but locked', async () => {
    const fightingHunt: HuntResult = {
      ...threeEncounterHunt,
      encounters: [
        { ...threeEncounterHunt.encounters[0], status: 'IN_PROGRESS' },
        threeEncounterHunt.encounters[1],
        threeEncounterHunt.encounters[2],
      ],
    };
    const fixture = await setup(burnedRoad, fightingHunt);
    const element = fixture.nativeElement as HTMLElement;

    const cards = element.querySelectorAll('app-encounter-card');
    expect(cards[0].querySelector('.encounter-card__defeated-mark')).toBeNull();

    const attackButtons = Array.from(
      element.querySelectorAll<HTMLButtonElement>('.encounter-card__attack'),
    );
    expect(attackButtons[0].disabled).toBe(true);
  });

  it('does not start a combat from a defeated encounter card', async () => {
    const clearedHunt: HuntResult = {
      ...threeEncounterHunt,
      encounters: [
        { ...threeEncounterHunt.encounters[0], status: 'DEFEATED' },
        threeEncounterHunt.encounters[1],
        threeEncounterHunt.encounters[2],
      ],
    };
    const fixture = await setup(burnedRoad, clearedHunt);
    const element = fixture.nativeElement as HTMLElement;

    element.querySelectorAll<HTMLButtonElement>('.encounter-card__attack')[0].click();
    await Promise.resolve();

    expect(combatStore.startCombat).not.toHaveBeenCalled();
  });

  it('loads the world state on init when no location has been loaded yet (direct navigation/hard refresh)', async () => {
    await setup(null);

    expect(worldStore.load).toHaveBeenCalledOnce();
  });

  it('does not call load again when a location is already present', async () => {
    await setup(burnedRoad);

    expect(worldStore.load).not.toHaveBeenCalled();
  });

  it('shows a loading state and disables the triggering action', async () => {
    const fixture = await setup(burnedRoad);
    huntingStore.loading.set(true);
    fixture.detectChanges();

    const element = fixture.nativeElement as HTMLElement;
    expect(element.textContent).toContain('You search for tracks...');
    expect(element.querySelector<HTMLButtonElement>('[data-hunt-start]')?.disabled).toBe(true);
  });

  it('displays a hunting error and retries via startHunt when there is no current hunt', async () => {
    const fixture = await setup(burnedRoad);
    huntingStore.error.set("There's no hunting ground at this location.");
    fixture.detectChanges();

    const element = fixture.nativeElement as HTMLElement;
    expect(element.querySelector('[role="alert"]')?.textContent).toContain(
      "There's no hunting ground at this location.",
    );
    element.querySelector<HTMLButtonElement>('[data-hunt-retry]')?.click();

    expect(huntingStore.startHunt).toHaveBeenCalledOnce();
  });
});