/**
 * Comprehensive Tests for MediaResolverPort
 * 
 * Tests cover:
 * - Interface contract compliance
 * - ResolutionStrategies for all reference types
 * - resolveWithDefaults helper function
 * - isMediaResolverPort type guard
 * - Edge cases and error handling
 * - Business logic decisions
 */

import { MediaReference } from '@core/domain/media/MediaReference';
import { describe, expect, it } from 'vitest';
import {
  MediaResolverPort,
  ResolutionStrategies,
  resolveWithDefaults,
  isMediaResolverPort,
} from './MediaResolverPort';

describe('MediaResolverPort - Comprehensive Tests', () => {
  describe('Interface Contract Compliance', () => {
    it('should define resolve method signature correctly', () => {
      // Verify the interface has the correct method signature
      const testInterface: MediaResolverPort = {
        resolve: async (ref: MediaReference): Promise<string | null> => {
          return null;
        },
      };

      expect(testInterface).toBeDefined();
      expect(typeof testInterface.resolve).toBe('function');
    });

    it('should accept MediaReference and return Promise<string | null>', async () => {
      const mockResolver: MediaResolverPort = {
        resolve: async (ref: MediaReference): Promise<string | null> => {
          // Verify ref is a MediaReference instance
          expect(ref).toBeInstanceOf(MediaReference);
          return '/test/path';
        },
      };

      const ref = MediaReference.createSystemDefault('avatar');
      const result = await mockResolver.resolve(ref);

      expect(result).toBe('/test/path');
    });
  });

  describe('ResolutionStrategies - System Default', () => {
    it('should resolve system-default avatar without variant', () => {
      const ref = MediaReference.createSystemDefault('avatar');
      const result = ResolutionStrategies.systemDefault(ref);

      expect(result).toBe('/media/default/neutral-default-avatar.png');
    });

    it('should resolve system-default avatar with male variant', () => {
      const ref = MediaReference.createSystemDefault('avatar', 'male');
      const result = ResolutionStrategies.systemDefault(ref);

      expect(result).toBe('/media/default/male-default-avatar.png');
    });

    it('should resolve system-default avatar with female variant', () => {
      const ref = MediaReference.createSystemDefault('avatar', 'female');
      const result = ResolutionStrategies.systemDefault(ref);

      expect(result).toBe('/media/default/female-default-avatar.png');
    });

    it('should resolve system-default avatar with neutral variant', () => {
      const ref = MediaReference.createSystemDefault('avatar', 'neutral');
      const result = ResolutionStrategies.systemDefault(ref);

      expect(result).toBe('/media/default/neutral-default-avatar.png');
    });

    it('should resolve system-default logo', () => {
      const ref = MediaReference.createSystemDefault('logo');
      const result = ResolutionStrategies.systemDefault(ref);

      expect(result).toBe('/media/default/logo.png');
    });

    it('should return null for non-system-default reference', () => {
      const ref = MediaReference.createGenerated('team-123');
      const result = ResolutionStrategies.systemDefault(ref);

      expect(result).toBeNull();
    });
  });

  describe('ResolutionStrategies - Generated', () => {
    it('should resolve generated reference for team', () => {
      const ref = MediaReference.createGenerated('team-123');
      const result = ResolutionStrategies.generated(ref);

      expect(result).toBe('/media/teams/123/logo');
    });

    it('should resolve generated reference for league', () => {
      const ref = MediaReference.createGenerated('league-456');
      const result = ResolutionStrategies.generated(ref);

      expect(result).toBe('/media/leagues/456/logo');
    });

    it('should resolve generated reference for driver', () => {
      const ref = MediaReference.createGenerated('driver-789');
      const result = ResolutionStrategies.generated(ref);

      expect(result).toBe('/media/avatar/789');
    });

    it('should resolve generated reference for unknown type', () => {
      const ref = MediaReference.createGenerated('unknown-999');
      const result = ResolutionStrategies.generated(ref);

      expect(result).toBe('/media/generated/unknown/999');
    });

    it('should return null for generated reference without generationRequestId', () => {
      // Create a reference with missing generationRequestId
      const ref = MediaReference.createGenerated('valid-id');
      // Manually create an invalid reference
      const invalidRef = { type: 'generated' } as MediaReference;
      const result = ResolutionStrategies.generated(invalidRef);

      expect(result).toBeNull();
    });

    it('should return null for non-generated reference', () => {
      const ref = MediaReference.createSystemDefault('avatar');
      const result = ResolutionStrategies.generated(ref);

      expect(result).toBeNull();
    });

    it('should handle generated reference with special characters in ID', () => {
      const ref = MediaReference.createGenerated('team-abc-123_XYZ');
      const result = ResolutionStrategies.generated(ref);

      expect(result).toBe('/media/teams/abc-123_XYZ/logo');
    });

    it('should handle generated reference with multiple hyphens', () => {
      const ref = MediaReference.createGenerated('team-abc-def-123');
      const result = ResolutionStrategies.generated(ref);

      expect(result).toBe('/media/teams/abc-def-123/logo');
    });
  });

  describe('ResolutionStrategies - Uploaded', () => {
    it('should resolve uploaded reference', () => {
      const ref = MediaReference.createUploaded('media-456');
      const result = ResolutionStrategies.uploaded(ref);

      expect(result).toBe('/media/uploaded/media-456');
    });

    it('should return null for uploaded reference without mediaId', () => {
      // Create a reference with missing mediaId
      const ref = MediaReference.createUploaded('valid-id');
      // Manually create an invalid reference
      const invalidRef = { type: 'uploaded' } as MediaReference;
      const result = ResolutionStrategies.uploaded(invalidRef);

      expect(result).toBeNull();
    });

    it('should return null for non-uploaded reference', () => {
      const ref = MediaReference.createSystemDefault('avatar');
      const result = ResolutionStrategies.uploaded(ref);

      expect(result).toBeNull();
    });

    it('should handle uploaded reference with special characters', () => {
      const ref = MediaReference.createUploaded('media-abc-123_XYZ');
      const result = ResolutionStrategies.uploaded(ref);

      expect(result).toBe('/media/uploaded/media-abc-123_XYZ');
    });

    it('should handle uploaded reference with very long ID', () => {
      const longId = 'a'.repeat(1000);
      const ref = MediaReference.createUploaded(longId);
      const result = ResolutionStrategies.uploaded(ref);

      expect(result).toBe(`/media/uploaded/${longId}`);
    });
  });

  describe('ResolutionStrategies - None', () => {
    it('should return null for none reference', () => {
      const ref = MediaReference.createNone();
      const result = ResolutionStrategies.none(ref);

      expect(result).toBeNull();
    });

    it('should return null for any reference passed to none strategy', () => {
      const ref = MediaReference.createSystemDefault('avatar');
      const result = ResolutionStrategies.none(ref);

      expect(result).toBeNull();
    });
  });

  describe('resolveWithDefaults - Integration Tests', () => {
    it('should resolve system-default reference using resolveWithDefaults', () => {
      const ref = MediaReference.createSystemDefault('avatar');
      const result = resolveWithDefaults(ref);

      expect(result).toBe('/media/default/neutral-default-avatar.png');
    });

    it('should resolve system-default avatar with male variant using resolveWithDefaults', () => {
      const ref = MediaReference.createSystemDefault('avatar', 'male');
      const result = resolveWithDefaults(ref);

      expect(result).toBe('/media/default/male-default-avatar.png');
    });

    it('should resolve system-default logo using resolveWithDefaults', () => {
      const ref = MediaReference.createSystemDefault('logo');
      const result = resolveWithDefaults(ref);

      expect(result).toBe('/media/default/logo.png');
    });

    it('should resolve generated reference using resolveWithDefaults', () => {
      const ref = MediaReference.createGenerated('team-123');
      const result = resolveWithDefaults(ref);

      expect(result).toBe('/media/teams/123/logo');
    });

    it('should resolve uploaded reference using resolveWithDefaults', () => {
      const ref = MediaReference.createUploaded('media-456');
      const result = resolveWithDefaults(ref);

      expect(result).toBe('/media/uploaded/media-456');
    });

    it('should resolve none reference using resolveWithDefaults', () => {
      const ref = MediaReference.createNone();
      const result = resolveWithDefaults(ref);

      expect(result).toBeNull();
    });

    it('should handle all reference types in sequence', () => {
      const refs = [
        MediaReference.createSystemDefault('avatar'),
        MediaReference.createSystemDefault('avatar', 'male'),
        MediaReference.createSystemDefault('logo'),
        MediaReference.createGenerated('team-123'),
        MediaReference.createGenerated('league-456'),
        MediaReference.createGenerated('driver-789'),
        MediaReference.createUploaded('media-456'),
        MediaReference.createNone(),
      ];

      const results = refs.map(ref => resolveWithDefaults(ref));

      expect(results).toEqual([
        '/media/default/neutral-default-avatar.png',
        '/media/default/male-default-avatar.png',
        '/media/default/logo.png',
        '/media/teams/123/logo',
        '/media/leagues/456/logo',
        '/media/avatar/789',
        '/media/uploaded/media-456',
        null,
      ]);
    });
  });

  describe('isMediaResolverPort Type Guard', () => {
    it('should return true for valid MediaResolverPort implementation', () => {
      const validResolver: MediaResolverPort = {
        resolve: async (ref: MediaReference): Promise<string | null> => {
          return '/test/path';
        },
      };

      expect(isMediaResolverPort(validResolver)).toBe(true);
    });

    it('should return false for null', () => {
      expect(isMediaResolverPort(null)).toBe(false);
    });

    it('should return false for undefined', () => {
      expect(isMediaResolverPort(undefined)).toBe(false);
    });

    it('should return false for non-object', () => {
      expect(isMediaResolverPort('string')).toBe(false);
      expect(isMediaResolverPort(123)).toBe(false);
      expect(isMediaResolverPort(true)).toBe(false);
    });

    it('should return false for object without resolve method', () => {
      const invalidResolver = {
        someOtherMethod: () => {},
      };

      expect(isMediaResolverPort(invalidResolver)).toBe(false);
    });

    it('should return false for object with resolve property but not a function', () => {
      const invalidResolver = {
        resolve: 'not a function',
      };

      expect(isMediaResolverPort(invalidResolver)).toBe(false);
    });

    it('should return false for object with resolve as non-function property', () => {
      const invalidResolver = {
        resolve: 123,
      };

      expect(isMediaResolverPort(invalidResolver)).toBe(false);
    });

    it('should return true for object with resolve method and other properties', () => {
      const validResolver = {
        resolve: async (ref: MediaReference): Promise<string | null> => {
          return '/test/path';
        },
        extraProperty: 'value',
        anotherMethod: () => {},
      };

      expect(isMediaResolverPort(validResolver)).toBe(true);
    });
  });

  describe('Business Logic Decisions', () => {
    it('should make correct decision for system-default avatar without variant', () => {
      const ref = MediaReference.createSystemDefault('avatar');
      const result = resolveWithDefaults(ref);

      // Decision: Should use neutral default avatar
      expect(result).toBe('/media/default/neutral-default-avatar.png');
    });

    it('should make correct decision for system-default avatar with specific variant', () => {
      const ref = MediaReference.createSystemDefault('avatar', 'female');
      const result = resolveWithDefaults(ref);

      // Decision: Should use the specified variant
      expect(result).toBe('/media/default/female-default-avatar.png');
    });

    it('should make correct decision for generated team reference', () => {
      const ref = MediaReference.createGenerated('team-123');
      const result = resolveWithDefaults(ref);

      // Decision: Should resolve to team logo path
      expect(result).toBe('/media/teams/123/logo');
    });

    it('should make correct decision for generated league reference', () => {
      const ref = MediaReference.createGenerated('league-456');
      const result = resolveWithDefaults(ref);

      // Decision: Should resolve to league logo path
      expect(result).toBe('/media/leagues/456/logo');
    });

    it('should make correct decision for generated driver reference', () => {
      const ref = MediaReference.createGenerated('driver-789');
      const result = resolveWithDefaults(ref);

      // Decision: Should resolve to avatar path
      expect(result).toBe('/media/avatar/789');
    });

    it('should make correct decision for uploaded reference', () => {
      const ref = MediaReference.createUploaded('media-456');
      const result = resolveWithDefaults(ref);

      // Decision: Should resolve to uploaded media path
      expect(result).toBe('/media/uploaded/media-456');
    });

    it('should make correct decision for none reference', () => {
      const ref = MediaReference.createNone();
      const result = resolveWithDefaults(ref);

      // Decision: Should return null (no media)
      expect(result).toBeNull();
    });

    it('should make correct decision for unknown generated type', () => {
      const ref = MediaReference.createGenerated('unknown-999');
      const result = resolveWithDefaults(ref);

      // Decision: Should fall back to generic generated path
      expect(result).toBe('/media/generated/unknown/999');
    });
  });

  describe('Edge Cases and Error Handling', () => {
    it('should handle empty string IDs gracefully', () => {
      // MediaReference factory methods throw on empty strings
      // This tests that the strategies handle invalid refs gracefully
      const invalidRef = { type: 'generated' } as MediaReference;
      const result = ResolutionStrategies.generated(invalidRef);

      expect(result).toBeNull();
    });

    it('should handle references with missing properties', () => {
      const invalidRef = { type: 'uploaded' } as MediaReference;
      const result = ResolutionStrategies.uploaded(invalidRef);

      expect(result).toBeNull();
    });

    it('should handle very long IDs without performance issues', () => {
      const longId = 'a'.repeat(10000);
      const ref = MediaReference.createUploaded(longId);
      const result = resolveWithDefaults(ref);

      expect(result).toBe(`/media/uploaded/${longId}`);
    });

    it('should handle Unicode characters in IDs', () => {
      const ref = MediaReference.createUploaded('media-日本語-123');
      const result = resolveWithDefaults(ref);

      expect(result).toBe('/media/uploaded/media-日本語-123');
    });

    it('should handle special characters in generated IDs', () => {
      const ref = MediaReference.createGenerated('team-abc_def-123');
      const result = resolveWithDefaults(ref);

      expect(result).toBe('/media/teams/abc_def-123/logo');
    });
  });

  describe('Path Format Consistency', () => {
    it('should maintain consistent path format for system-default', () => {
      const ref = MediaReference.createSystemDefault('avatar');
      const result = resolveWithDefaults(ref);

      // Should start with /media/default/
      expect(result).toMatch(/^\/media\/default\//);
    });

    it('should maintain consistent path format for generated team', () => {
      const ref = MediaReference.createGenerated('team-123');
      const result = resolveWithDefaults(ref);

      // Should start with /media/teams/
      expect(result).toMatch(/^\/media\/teams\//);
    });

    it('should maintain consistent path format for generated league', () => {
      const ref = MediaReference.createGenerated('league-456');
      const result = resolveWithDefaults(ref);

      // Should start with /media/leagues/
      expect(result).toMatch(/^\/media\/leagues\//);
    });

    it('should maintain consistent path format for generated driver', () => {
      const ref = MediaReference.createGenerated('driver-789');
      const result = resolveWithDefaults(ref);

      // Should start with /media/avatar/
      expect(result).toMatch(/^\/media\/avatar\//);
    });

    it('should maintain consistent path format for uploaded', () => {
      const ref = MediaReference.createUploaded('media-456');
      const result = resolveWithDefaults(ref);

      // Should start with /media/uploaded/
      expect(result).toMatch(/^\/media\/uploaded\//);
    });

    it('should maintain consistent path format for unknown generated type', () => {
      const ref = MediaReference.createGenerated('unknown-999');
      const result = resolveWithDefaults(ref);

      // Should start with /media/generated/
      expect(result).toMatch(/^\/media\/generated\//);
    });
  });
});