/**
 * Integration Test: Category Icon Management Use Case Orchestration
 * 
 * Tests the orchestration logic of category icon-related Use Cases:
 * - GetCategoryIconsUseCase: Retrieves category icons
 * - UploadCategoryIconUseCase: Uploads a new category icon
 * - UpdateCategoryIconUseCase: Updates an existing category icon
 * - DeleteCategoryIconUseCase: Deletes a category icon
 * - 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';

describe('Category Icon Management Use Case Orchestration', () => {
  // TODO: Initialize In-Memory repositories and event publisher
  // let categoryIconRepository: InMemoryCategoryIconRepository;
  // let categoryRepository: InMemoryCategoryRepository;
  // let eventPublisher: InMemoryEventPublisher;
  // let getCategoryIconsUseCase: GetCategoryIconsUseCase;
  // let uploadCategoryIconUseCase: UploadCategoryIconUseCase;
  // let updateCategoryIconUseCase: UpdateCategoryIconUseCase;
  // let deleteCategoryIconUseCase: DeleteCategoryIconUseCase;

  beforeAll(() => {
    // TODO: Initialize In-Memory repositories and event publisher
    // categoryIconRepository = new InMemoryCategoryIconRepository();
    // categoryRepository = new InMemoryCategoryRepository();
    // eventPublisher = new InMemoryEventPublisher();
    // getCategoryIconsUseCase = new GetCategoryIconsUseCase({
    //   categoryIconRepository,
    //   categoryRepository,
    //   eventPublisher,
    // });
    // uploadCategoryIconUseCase = new UploadCategoryIconUseCase({
    //   categoryIconRepository,
    //   categoryRepository,
    //   eventPublisher,
    // });
    // updateCategoryIconUseCase = new UpdateCategoryIconUseCase({
    //   categoryIconRepository,
    //   categoryRepository,
    //   eventPublisher,
    // });
    // deleteCategoryIconUseCase = new DeleteCategoryIconUseCase({
    //   categoryIconRepository,
    //   categoryRepository,
    //   eventPublisher,
    // });
  });

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

  describe('GetCategoryIconsUseCase - Success Path', () => {
    it('should retrieve all category icons', async () => {
      // TODO: Implement test
      // Scenario: Multiple categories with icons
      // Given: Multiple categories exist with icons
      // When: GetCategoryIconsUseCase.execute() is called
      // Then: The result should contain all category icons
      // And: Each icon should have correct metadata
      // And: EventPublisher should emit CategoryIconsRetrievedEvent
    });

    it('should retrieve category icons for specific category type', async () => {
      // TODO: Implement test
      // Scenario: Filter by category type
      // Given: Categories exist with different types
      // When: GetCategoryIconsUseCase.execute() is called with type filter
      // Then: The result should only contain icons for that type
      // And: EventPublisher should emit CategoryIconsRetrievedEvent
    });

    it('should retrieve category icons with search query', async () => {
      // TODO: Implement test
      // Scenario: Search categories by name
      // Given: Categories exist with various names
      // When: GetCategoryIconsUseCase.execute() is called with search query
      // Then: The result should only contain matching categories
      // And: EventPublisher should emit CategoryIconsRetrievedEvent
    });
  });

  describe('GetCategoryIconsUseCase - Edge Cases', () => {
    it('should handle empty category list', async () => {
      // TODO: Implement test
      // Scenario: No categories exist
      // Given: No categories exist in the system
      // When: GetCategoryIconsUseCase.execute() is called
      // Then: The result should be an empty list
      // And: EventPublisher should emit CategoryIconsRetrievedEvent
    });

    it('should handle categories without icons', async () => {
      // TODO: Implement test
      // Scenario: Categories exist without icons
      // Given: Categories exist without icons
      // When: GetCategoryIconsUseCase.execute() is called
      // Then: The result should show categories with default icons
      // And: EventPublisher should emit CategoryIconsRetrievedEvent
    });
  });

  describe('UploadCategoryIconUseCase - Success Path', () => {
    it('should upload a new category icon', async () => {
      // TODO: Implement test
      // Scenario: Admin uploads new category icon
      // Given: A category exists without an icon
      // And: Valid icon image data is provided
      // When: UploadCategoryIconUseCase.execute() is called with category ID and image data
      // Then: The icon should be stored in the repository
      // And: The icon should have correct metadata (file size, format, upload date)
      // And: EventPublisher should emit CategoryIconUploadedEvent
    });

    it('should upload category icon with validation requirements', async () => {
      // TODO: Implement test
      // Scenario: Admin uploads icon with validation
      // Given: A category exists
      // And: Icon data meets validation requirements (correct format, size, dimensions)
      // When: UploadCategoryIconUseCase.execute() is called
      // Then: The icon should be stored successfully
      // And: EventPublisher should emit CategoryIconUploadedEvent
    });

    it('should upload icon for new category creation', async () => {
      // TODO: Implement test
      // Scenario: Admin creates category with icon
      // Given: No category exists
      // When: UploadCategoryIconUseCase.execute() is called with new category details and icon
      // Then: The category should be created
      // And: The icon should be stored
      // And: EventPublisher should emit CategoryCreatedEvent and CategoryIconUploadedEvent
    });
  });

  describe('UploadCategoryIconUseCase - Validation', () => {
    it('should reject upload with invalid file format', async () => {
      // TODO: Implement test
      // Scenario: Invalid file format
      // Given: A category exists
      // And: Icon data has invalid format (e.g., .txt, .exe)
      // When: UploadCategoryIconUseCase.execute() is called
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });

    it('should reject upload with oversized file', async () => {
      // TODO: Implement test
      // Scenario: File exceeds size limit
      // Given: A category exists
      // And: Icon data exceeds maximum file size
      // When: UploadCategoryIconUseCase.execute() is called
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });

    it('should reject upload with invalid dimensions', async () => {
      // TODO: Implement test
      // Scenario: Invalid image dimensions
      // Given: A category exists
      // And: Icon data has invalid dimensions (too small or too large)
      // When: UploadCategoryIconUseCase.execute() is called
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('UpdateCategoryIconUseCase - Success Path', () => {
    it('should update existing category icon', async () => {
      // TODO: Implement test
      // Scenario: Admin updates category icon
      // Given: A category exists with an existing icon
      // And: Valid new icon image data is provided
      // When: UpdateCategoryIconUseCase.execute() is called with category ID and new image data
      // Then: The old icon should be replaced with the new one
      // And: The new icon should have updated metadata
      // And: EventPublisher should emit CategoryIconUpdatedEvent
    });

    it('should update icon with validation requirements', async () => {
      // TODO: Implement test
      // Scenario: Admin updates icon with validation
      // Given: A category exists with an existing icon
      // And: New icon data meets validation requirements
      // When: UpdateCategoryIconUseCase.execute() is called
      // Then: The icon should be updated successfully
      // And: EventPublisher should emit CategoryIconUpdatedEvent
    });

    it('should update icon for category with multiple icons', async () => {
      // TODO: Implement test
      // Scenario: Category with multiple icons
      // Given: A category exists with multiple icons
      // When: UpdateCategoryIconUseCase.execute() is called
      // Then: Only the specified icon should be updated
      // And: Other icons should remain unchanged
      // And: EventPublisher should emit CategoryIconUpdatedEvent
    });
  });

  describe('UpdateCategoryIconUseCase - Validation', () => {
    it('should reject update with invalid file format', async () => {
      // TODO: Implement test
      // Scenario: Invalid file format
      // Given: A category exists with an existing icon
      // And: New icon data has invalid format
      // When: UpdateCategoryIconUseCase.execute() is called
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });

    it('should reject update with oversized file', async () => {
      // TODO: Implement test
      // Scenario: File exceeds size limit
      // Given: A category exists with an existing icon
      // And: New icon data exceeds maximum file size
      // When: UpdateCategoryIconUseCase.execute() is called
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('DeleteCategoryIconUseCase - Success Path', () => {
    it('should delete category icon', async () => {
      // TODO: Implement test
      // Scenario: Admin deletes category icon
      // Given: A category exists with an existing icon
      // When: DeleteCategoryIconUseCase.execute() is called with category ID
      // Then: The icon should be removed from the repository
      // And: The category should show a default icon
      // And: EventPublisher should emit CategoryIconDeletedEvent
    });

    it('should delete specific icon when category has multiple icons', async () => {
      // TODO: Implement test
      // Scenario: Category with multiple icons
      // Given: A category exists with multiple icons
      // When: DeleteCategoryIconUseCase.execute() is called with specific icon ID
      // Then: Only that icon should be removed
      // And: Other icons should remain
      // And: EventPublisher should emit CategoryIconDeletedEvent
    });
  });

  describe('DeleteCategoryIconUseCase - Error Handling', () => {
    it('should handle deletion when category has no icon', async () => {
      // TODO: Implement test
      // Scenario: Category without icon
      // Given: A category exists without an icon
      // When: DeleteCategoryIconUseCase.execute() is called with category ID
      // Then: Should complete successfully (no-op)
      // And: EventPublisher should emit CategoryIconDeletedEvent
    });

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

  describe('Category Icon Data Orchestration', () => {
    it('should correctly format category icon metadata', async () => {
      // TODO: Implement test
      // Scenario: Category icon metadata formatting
      // Given: A category exists with an icon
      // When: GetCategoryIconsUseCase.execute() is called
      // Then: Icon metadata should show:
      // - File size: Correctly formatted (e.g., "1.2 MB")
      // - File format: Correct format (e.g., "PNG", "SVG")
      // - Upload date: Correctly formatted date
    });

    it('should correctly handle category icon caching', async () => {
      // TODO: Implement test
      // Scenario: Category icon caching
      // Given: Categories exist with icons
      // When: GetCategoryIconsUseCase.execute() is called multiple times
      // Then: Subsequent calls should return cached data
      // And: EventPublisher should emit CategoryIconsRetrievedEvent for each call
    });

    it('should correctly handle category icon error states', async () => {
      // TODO: Implement test
      // Scenario: Category icon error handling
      // Given: Categories exist
      // And: CategoryIconRepository throws an error during retrieval
      // When: GetCategoryIconsUseCase.execute() is called
      // Then: Should propagate the error appropriately
      // And: EventPublisher should NOT emit any events
    });

    it('should correctly handle bulk category icon operations', async () => {
      // TODO: Implement test
      // Scenario: Bulk category icon operations
      // Given: Multiple categories exist
      // When: Bulk upload or export operations are performed
      // Then: All operations should complete successfully
      // And: EventPublisher should emit appropriate events for each operation
    });
  });
});