import 'reflect-metadata';

import { MODULE_METADATA } from '@nestjs/common/constants';
import { Test } from '@nestjs/testing';
import type { TestingModule } from '@nestjs/testing';
import { afterEach, describe, expect, it, vi } from 'vitest';

import { AVATAR_GENERATION_REPOSITORY_TOKEN, MEDIA_REPOSITORY_TOKEN, AVATAR_REPOSITORY_TOKEN } from './MediaPersistenceTokens';

describe('MediaPersistenceModule', () => {
  const originalEnv = { ...process.env };

  afterEach(() => {
    process.env = originalEnv;
    vi.restoreAllMocks();
  });

  it('uses inmemory providers when GRIDPILOT_API_PERSISTENCE=inmemory', async () => {
    vi.resetModules();

    process.env.GRIDPILOT_API_PERSISTENCE = 'inmemory';
    delete process.env.DATABASE_URL;

    const { MediaPersistenceModule } = await import('./MediaPersistenceModule');
    const { InMemoryAvatarGenerationRepository } = await import('@adapters/media/persistence/inmemory/InMemoryAvatarGenerationRepository');

    const module: TestingModule = await Test.createTestingModule({
      imports: [MediaPersistenceModule],
    }).compile();

    const avatarGenRepo = module.get(AVATAR_GENERATION_REPOSITORY_TOKEN);
    expect(avatarGenRepo).toBeInstanceOf(InMemoryAvatarGenerationRepository);

    // Media and Avatar repos are mocks in inmemory mode
    const mediaRepo = module.get(MEDIA_REPOSITORY_TOKEN);
    const avatarRepo = module.get(AVATAR_REPOSITORY_TOKEN);
    expect(mediaRepo).toBeDefined();
    expect(avatarRepo).toBeDefined();

    await module.close();
  });

  it('uses postgres module when GRIDPILOT_API_PERSISTENCE=postgres', async () => {
    vi.resetModules();

    process.env.GRIDPILOT_API_PERSISTENCE = 'postgres';
    delete process.env.DATABASE_URL;

    const { MediaPersistenceModule } = await import('./MediaPersistenceModule');
    const { PostgresMediaPersistenceModule } = await import('../postgres/PostgresMediaPersistenceModule');

    const imports = Reflect.getMetadata(MODULE_METADATA.IMPORTS, MediaPersistenceModule) as unknown[];
    expect(imports).toContain(PostgresMediaPersistenceModule);
  });

  it('defaults to inmemory when GRIDPILOT_API_PERSISTENCE is not set', async () => {
    vi.resetModules();

    delete process.env.GRIDPILOT_API_PERSISTENCE;
    delete process.env.DATABASE_URL;

    const { MediaPersistenceModule } = await import('./MediaPersistenceModule');
    const { InMemoryMediaPersistenceModule } = await import('../inmemory/InMemoryMediaPersistenceModule');

    const imports = Reflect.getMetadata(MODULE_METADATA.IMPORTS, MediaPersistenceModule) as unknown[];
    expect(imports).toContain(InMemoryMediaPersistenceModule);
  });
});