/**
 * UI Type Safety Tests
 * Tests to ensure proper TypeScript typing in React components and hooks
 */

interface HCS10Agent {
  accountId: string;
  metadata: {
    display_name?: string;
    alias?: string;
    bio?: string;
    profileImage?: string;
  };
  network: string;
  type?: 'ai-agent' | 'user';
}

interface MCPServer {
  name: string;
  command: string;
  args?: string[];
  env?: Record<string, string>;
}

interface ChatMessage {
  id: string;
  content: string;
  role: 'user' | 'assistant';
  timestamp: Date;
}

interface ScreenType {
  type: 'setup' | 'loading' | 'chat' | 'error';
}

interface InitializeAgentActions {
  setScreen: (screen: ScreenType) => void;
  setMessages: (messages: ChatMessage[]) => void;
  setError: (error: string | null) => void;
}

describe('UI Type Safety', () => {
  describe('Agent Connection Types', () => {
    test('should handle HCS10Agent type instead of any', () => {
      const agent: HCS10Agent = {
        accountId: '0.0.123',
        metadata: {
          display_name: 'Test Agent',
          alias: 'test',
        },
        network: 'testnet',
        type: 'ai-agent',
      };

      expect(agent.accountId).toBe('0.0.123');
      expect(agent.metadata.display_name).toBe('Test Agent');
      expect(agent.network).toBe('testnet');
    });

    test('should validate agent connection parameters', () => {
      const mockConnectFunction = (agent: HCS10Agent): Promise<{ success: boolean; error?: string }> => {
        if (!agent.accountId || !agent.network) {
          return Promise.resolve({ success: false, error: 'Missing required fields' });
        }
        return Promise.resolve({ success: true });
      };

      const validAgent: HCS10Agent = {
        accountId: '0.0.456',
        metadata: {},
        network: 'mainnet',
      };

      return expect(mockConnectFunction(validAgent)).resolves.toEqual({ success: true });
    });
  });

  describe('MCP Server Types', () => {
    test('should handle MCPServer type instead of any', () => {
      const server: MCPServer = {
        name: 'filesystem',
        command: 'mcp-server-filesystem',
        args: ['--path', '/tmp'],
        env: { NODE_ENV: 'production' },
      };

      expect(server.name).toBe('filesystem');
      expect(server.command).toBe('mcp-server-filesystem');
      expect(server.args).toContain('--path');
      expect(server.env?.NODE_ENV).toBe('production');
    });

    test('should validate MCP server installation', () => {
      const mockInstallFunction = (server: MCPServer): Promise<{ success: boolean; error?: string }> => {
        if (!server.name || !server.command) {
          return Promise.resolve({ success: false, error: 'Invalid server configuration' });
        }
        return Promise.resolve({ success: true });
      };

      const validServer: MCPServer = {
        name: 'git',
        command: 'mcp-server-git',
      };

      return expect(mockInstallFunction(validServer)).resolves.toEqual({ success: true });
    });
  });

  describe('Hook Type Safety', () => {
    test('should handle InitializeAgentActions type instead of any', () => {
      const actions: InitializeAgentActions = {
        setScreen: (screen: ScreenType) => {
          expect(['setup', 'loading', 'chat', 'error']).toContain(screen.type);
        },
        setMessages: (messages: ChatMessage[]) => {
          messages.forEach(message => {
            expect(message).toHaveProperty('id');
            expect(message).toHaveProperty('content');
            expect(['user', 'assistant']).toContain(message.role);
          });
        },
        setError: (error: string | null) => {
          expect(typeof error === 'string' || error === null).toBe(true);
        },
      };

      actions.setScreen({ type: 'loading' });
      actions.setMessages([{
        id: '1',
        content: 'Hello',
        role: 'user',
        timestamp: new Date(),
      }]);
      actions.setError('Test error');
      actions.setError(null);
    });

    test('should validate screen type transitions', () => {
      const validScreenTypes: Array<ScreenType['type']> = ['setup', 'loading', 'chat', 'error'];
      
      validScreenTypes.forEach(type => {
        const screen: ScreenType = { type };
        expect(validScreenTypes).toContain(screen.type);
      });
    });
  });

  describe('Form Validation Types', () => {
    test('should handle form field validation with specific types', () => {
      interface FieldValidationResult {
        isValid: boolean;
        error?: string;
      }

      const validateField = (field: string, value: unknown): FieldValidationResult => {
        if (field === 'accountId') {
          if (typeof value !== 'string' || !value.startsWith('0.0.')) {
            return { isValid: false, error: 'Invalid account ID format' };
          }
        }
        
        if (field === 'network') {
          if (!['mainnet', 'testnet'].includes(value as string)) {
            return { isValid: false, error: 'Invalid network' };
          }
        }

        return { isValid: true };
      };

      expect(validateField('accountId', '0.0.123')).toEqual({ isValid: true });
      expect(validateField('accountId', 'invalid')).toEqual({ 
        isValid: false, 
        error: 'Invalid account ID format' 
      });
      expect(validateField('network', 'testnet')).toEqual({ isValid: true });
      expect(validateField('network', 'invalid')).toEqual({ 
        isValid: false, 
        error: 'Invalid network' 
      });
    });
  });

  describe('Progress Handler Types', () => {
    test('should handle progress updates with specific interface', () => {
      interface ProgressData {
        stage: 'initializing' | 'processing' | 'complete' | 'error';
        progress: number;
        message?: string;
      }

      const handleProgressUpdate = (progressData: ProgressData) => {
        expect(progressData).toHaveProperty('stage');
        expect(progressData).toHaveProperty('progress');
        expect(['initializing', 'processing', 'complete', 'error']).toContain(progressData.stage);
        expect(typeof progressData.progress).toBe('number');
        expect(progressData.progress).toBeGreaterThanOrEqual(0);
        expect(progressData.progress).toBeLessThanOrEqual(100);
      };

      const validProgress: ProgressData = {
        stage: 'processing',
        progress: 50,
        message: 'Processing request...',
      };

      handleProgressUpdate(validProgress);
    });
  });

  describe('Error Handling Types', () => {
    test('should handle errors with specific interface', () => {
      interface ErrorInfo {
        code?: string;
        message: string;
        details?: Record<string, unknown>;
      }

      const handleError = (error: ErrorInfo) => {
        expect(error).toHaveProperty('message');
        expect(typeof error.message).toBe('string');
        if (error.code) {
          expect(typeof error.code).toBe('string');
        }
        if (error.details) {
          expect(typeof error.details).toBe('object');
        }
      };

      const validError: ErrorInfo = {
        code: 'VALIDATION_ERROR',
        message: 'Invalid input provided',
        details: { field: 'accountId', value: 'invalid' },
      };

      handleError(validError);
    });
  });
});