/**
 * Integration Test: Sponsor Campaigns Use Case Orchestration
 * 
 * Tests the orchestration logic of sponsor campaigns-related Use Cases:
 * - GetSponsorCampaignsUseCase: Retrieves sponsor's campaigns
 * - GetCampaignStatisticsUseCase: Retrieves campaign statistics
 * - FilterCampaignsUseCase: Filters campaigns by status
 * - SearchCampaignsUseCase: Searches campaigns by query
 * - Validates that Use Cases correctly interact with their Ports (Repositories, Event Publishers)
 * - Uses In-Memory adapters for fast, deterministic testing
 * 
 * Focus: Business logic orchestration, NOT UI rendering
 */

import { describe, it, expect, beforeAll, afterAll, beforeEach } from 'vitest';
import { InMemorySponsorRepository } from '../../../adapters/sponsors/persistence/inmemory/InMemorySponsorRepository';
import { InMemoryCampaignRepository } from '../../../adapters/sponsors/persistence/inmemory/InMemoryCampaignRepository';
import { InMemoryEventPublisher } from '../../../adapters/events/InMemoryEventPublisher';
import { GetSponsorCampaignsUseCase } from '../../../core/sponsors/use-cases/GetSponsorCampaignsUseCase';
import { GetCampaignStatisticsUseCase } from '../../../core/sponsors/use-cases/GetCampaignStatisticsUseCase';
import { FilterCampaignsUseCase } from '../../../core/sponsors/use-cases/FilterCampaignsUseCase';
import { SearchCampaignsUseCase } from '../../../core/sponsors/use-cases/SearchCampaignsUseCase';
import { GetSponsorCampaignsQuery } from '../../../core/sponsors/ports/GetSponsorCampaignsQuery';
import { GetCampaignStatisticsQuery } from '../../../core/sponsors/ports/GetCampaignStatisticsQuery';
import { FilterCampaignsCommand } from '../../../core/sponsors/ports/FilterCampaignsCommand';
import { SearchCampaignsCommand } from '../../../core/sponsors/ports/SearchCampaignsCommand';

describe('Sponsor Campaigns Use Case Orchestration', () => {
  let sponsorRepository: InMemorySponsorRepository;
  let campaignRepository: InMemoryCampaignRepository;
  let eventPublisher: InMemoryEventPublisher;
  let getSponsorCampaignsUseCase: GetSponsorCampaignsUseCase;
  let getCampaignStatisticsUseCase: GetCampaignStatisticsUseCase;
  let filterCampaignsUseCase: FilterCampaignsUseCase;
  let searchCampaignsUseCase: SearchCampaignsUseCase;

  beforeAll(() => {
    // TODO: Initialize In-Memory repositories and event publisher
    // sponsorRepository = new InMemorySponsorRepository();
    // campaignRepository = new InMemoryCampaignRepository();
    // eventPublisher = new InMemoryEventPublisher();
    // getSponsorCampaignsUseCase = new GetSponsorCampaignsUseCase({
    //   sponsorRepository,
    //   campaignRepository,
    //   eventPublisher,
    // });
    // getCampaignStatisticsUseCase = new GetCampaignStatisticsUseCase({
    //   sponsorRepository,
    //   campaignRepository,
    //   eventPublisher,
    // });
    // filterCampaignsUseCase = new FilterCampaignsUseCase({
    //   sponsorRepository,
    //   campaignRepository,
    //   eventPublisher,
    // });
    // searchCampaignsUseCase = new SearchCampaignsUseCase({
    //   sponsorRepository,
    //   campaignRepository,
    //   eventPublisher,
    // });
  });

  beforeEach(() => {
    // TODO: Clear all In-Memory repositories before each test
    // sponsorRepository.clear();
    // campaignRepository.clear();
    // eventPublisher.clear();
  });

  describe('GetSponsorCampaignsUseCase - Success Path', () => {
    it('should retrieve all campaigns for a sponsor', async () => {
      // TODO: Implement test
      // Scenario: Sponsor with multiple campaigns
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has 5 campaigns (2 active, 2 pending, 1 rejected)
      // When: GetSponsorCampaignsUseCase.execute() is called with sponsor ID
      // Then: The result should contain all 5 campaigns
      // And: Each campaign should display its details
      // And: EventPublisher should emit SponsorCampaignsAccessedEvent
    });

    it('should retrieve campaigns with minimal data', async () => {
      // TODO: Implement test
      // Scenario: Sponsor with minimal campaigns
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has 1 campaign
      // When: GetSponsorCampaignsUseCase.execute() is called with sponsor ID
      // Then: The result should contain the single campaign
      // And: EventPublisher should emit SponsorCampaignsAccessedEvent
    });

    it('should retrieve campaigns with empty result', async () => {
      // TODO: Implement test
      // Scenario: Sponsor with no campaigns
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has no campaigns
      // When: GetSponsorCampaignsUseCase.execute() is called with sponsor ID
      // Then: The result should be empty
      // And: EventPublisher should emit SponsorCampaignsAccessedEvent
    });
  });

  describe('GetSponsorCampaignsUseCase - Error Handling', () => {
    it('should throw error when sponsor does not exist', async () => {
      // TODO: Implement test
      // Scenario: Non-existent sponsor
      // Given: No sponsor exists with the given ID
      // When: GetSponsorCampaignsUseCase.execute() is called with non-existent sponsor ID
      // Then: Should throw SponsorNotFoundError
      // And: EventPublisher should NOT emit any events
    });

    it('should throw error when sponsor ID is invalid', async () => {
      // TODO: Implement test
      // Scenario: Invalid sponsor ID
      // Given: An invalid sponsor ID (e.g., empty string, null, undefined)
      // When: GetSponsorCampaignsUseCase.execute() is called with invalid sponsor ID
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('GetCampaignStatisticsUseCase - Success Path', () => {
    it('should retrieve campaign statistics for a sponsor', async () => {
      // TODO: Implement test
      // Scenario: Sponsor with multiple campaigns
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has 5 campaigns (2 active, 2 pending, 1 rejected)
      // And: The sponsor has total investment of $5000
      // And: The sponsor has total impressions of 100000
      // When: GetCampaignStatisticsUseCase.execute() is called with sponsor ID
      // Then: The result should show total sponsorships count: 5
      // And: The result should show active sponsorships count: 2
      // And: The result should show pending sponsorships count: 2
      // And: The result should show approved sponsorships count: 2
      // And: The result should show rejected sponsorships count: 1
      // And: The result should show total investment: $5000
      // And: The result should show total impressions: 100000
      // And: EventPublisher should emit CampaignStatisticsAccessedEvent
    });

    it('should retrieve statistics with zero values', async () => {
      // TODO: Implement test
      // Scenario: Sponsor with no campaigns
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has no campaigns
      // When: GetCampaignStatisticsUseCase.execute() is called with sponsor ID
      // Then: The result should show all counts as 0
      // And: The result should show total investment as 0
      // And: The result should show total impressions as 0
      // And: EventPublisher should emit CampaignStatisticsAccessedEvent
    });
  });

  describe('GetCampaignStatisticsUseCase - Error Handling', () => {
    it('should throw error when sponsor does not exist', async () => {
      // TODO: Implement test
      // Scenario: Non-existent sponsor
      // Given: No sponsor exists with the given ID
      // When: GetCampaignStatisticsUseCase.execute() is called with non-existent sponsor ID
      // Then: Should throw SponsorNotFoundError
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('FilterCampaignsUseCase - Success Path', () => {
    it('should filter campaigns by "All" status', async () => {
      // TODO: Implement test
      // Scenario: Filter by All
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has 5 campaigns (2 active, 2 pending, 1 rejected)
      // When: FilterCampaignsUseCase.execute() is called with status "All"
      // Then: The result should contain all 5 campaigns
      // And: EventPublisher should emit CampaignsFilteredEvent
    });

    it('should filter campaigns by "Active" status', async () => {
      // TODO: Implement test
      // Scenario: Filter by Active
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has 5 campaigns (2 active, 2 pending, 1 rejected)
      // When: FilterCampaignsUseCase.execute() is called with status "Active"
      // Then: The result should contain only 2 active campaigns
      // And: EventPublisher should emit CampaignsFilteredEvent
    });

    it('should filter campaigns by "Pending" status', async () => {
      // TODO: Implement test
      // Scenario: Filter by Pending
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has 5 campaigns (2 active, 2 pending, 1 rejected)
      // When: FilterCampaignsUseCase.execute() is called with status "Pending"
      // Then: The result should contain only 2 pending campaigns
      // And: EventPublisher should emit CampaignsFilteredEvent
    });

    it('should filter campaigns by "Approved" status', async () => {
      // TODO: Implement test
      // Scenario: Filter by Approved
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has 5 campaigns (2 active, 2 pending, 1 rejected)
      // When: FilterCampaignsUseCase.execute() is called with status "Approved"
      // Then: The result should contain only 2 approved campaigns
      // And: EventPublisher should emit CampaignsFilteredEvent
    });

    it('should filter campaigns by "Rejected" status', async () => {
      // TODO: Implement test
      // Scenario: Filter by Rejected
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has 5 campaigns (2 active, 2 pending, 1 rejected)
      // When: FilterCampaignsUseCase.execute() is called with status "Rejected"
      // Then: The result should contain only 1 rejected campaign
      // And: EventPublisher should emit CampaignsFilteredEvent
    });

    it('should return empty result when no campaigns match filter', async () => {
      // TODO: Implement test
      // Scenario: Filter with no matches
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has 2 active campaigns
      // When: FilterCampaignsUseCase.execute() is called with status "Pending"
      // Then: The result should be empty
      // And: EventPublisher should emit CampaignsFilteredEvent
    });
  });

  describe('FilterCampaignsUseCase - Error Handling', () => {
    it('should throw error when sponsor does not exist', async () => {
      // TODO: Implement test
      // Scenario: Non-existent sponsor
      // Given: No sponsor exists with the given ID
      // When: FilterCampaignsUseCase.execute() is called with non-existent sponsor ID
      // Then: Should throw SponsorNotFoundError
      // And: EventPublisher should NOT emit any events
    });

    it('should throw error with invalid status', async () => {
      // TODO: Implement test
      // Scenario: Invalid status
      // Given: A sponsor exists with ID "sponsor-123"
      // When: FilterCampaignsUseCase.execute() is called with invalid status
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('SearchCampaignsUseCase - Success Path', () => {
    it('should search campaigns by league name', async () => {
      // TODO: Implement test
      // Scenario: Search by league name
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has campaigns for leagues: "League A", "League B", "League C"
      // When: SearchCampaignsUseCase.execute() is called with query "League A"
      // Then: The result should contain only campaigns for "League A"
      // And: EventPublisher should emit CampaignsSearchedEvent
    });

    it('should search campaigns by partial match', async () => {
      // TODO: Implement test
      // Scenario: Search by partial match
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has campaigns for leagues: "Premier League", "League A", "League B"
      // When: SearchCampaignsUseCase.execute() is called with query "League"
      // Then: The result should contain campaigns for "Premier League", "League A", "League B"
      // And: EventPublisher should emit CampaignsSearchedEvent
    });

    it('should return empty result when no campaigns match search', async () => {
      // TODO: Implement test
      // Scenario: Search with no matches
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has campaigns for leagues: "League A", "League B"
      // When: SearchCampaignsUseCase.execute() is called with query "NonExistent"
      // Then: The result should be empty
      // And: EventPublisher should emit CampaignsSearchedEvent
    });

    it('should return all campaigns when search query is empty', async () => {
      // TODO: Implement test
      // Scenario: Search with empty query
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has 3 campaigns
      // When: SearchCampaignsUseCase.execute() is called with empty query
      // Then: The result should contain all 3 campaigns
      // And: EventPublisher should emit CampaignsSearchedEvent
    });
  });

  describe('SearchCampaignsUseCase - Error Handling', () => {
    it('should throw error when sponsor does not exist', async () => {
      // TODO: Implement test
      // Scenario: Non-existent sponsor
      // Given: No sponsor exists with the given ID
      // When: SearchCampaignsUseCase.execute() is called with non-existent sponsor ID
      // Then: Should throw SponsorNotFoundError
      // And: EventPublisher should NOT emit any events
    });

    it('should throw error with invalid query', async () => {
      // TODO: Implement test
      // Scenario: Invalid query
      // Given: A sponsor exists with ID "sponsor-123"
      // When: SearchCampaignsUseCase.execute() is called with invalid query (e.g., null, undefined)
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('Campaign Data Orchestration', () => {
    it('should correctly aggregate campaign statistics', async () => {
      // TODO: Implement test
      // Scenario: Campaign statistics aggregation
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has 3 campaigns with investments: $1000, $2000, $3000
      // And: The sponsor has 3 campaigns with impressions: 50000, 30000, 20000
      // When: GetCampaignStatisticsUseCase.execute() is called
      // Then: Total investment should be $6000
      // And: Total impressions should be 100000
      // And: EventPublisher should emit CampaignStatisticsAccessedEvent
    });

    it('should correctly filter campaigns by status', async () => {
      // TODO: Implement test
      // Scenario: Campaign status filtering
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has campaigns with different statuses
      // When: FilterCampaignsUseCase.execute() is called with "Active"
      // Then: Only active campaigns should be returned
      // And: Each campaign should have correct status
      // And: EventPublisher should emit CampaignsFilteredEvent
    });

    it('should correctly search campaigns by league name', async () => {
      // TODO: Implement test
      // Scenario: Campaign league name search
      // Given: A sponsor exists with ID "sponsor-123"
      // And: The sponsor has campaigns for different leagues
      // When: SearchCampaignsUseCase.execute() is called with league name
      // Then: Only campaigns for matching leagues should be returned
      // And: Each campaign should have correct league name
      // And: EventPublisher should emit CampaignsSearchedEvent
    });
  });
});