claude-flow-multilang/src/domain/application/ddd-development-service.ts

Revolutionary multilingual AI orchestration framework with cultural awareness and DDD architecture

/**
 * Claude Flow Multilang Framework - DDD Development Service
 * Integrates DDD into the development workflow
 */

import { SupportedLanguage } from '../../polyglot/types.js';
import { ILogger } from '../../core/logger.js';
import { WorkflowAggregate } from '../workflow-aggregate.js';
import { CommandBus, ICommand, ICommandResult } from './command-handler.js';
import { PolyglotAgent } from '../../polyglot/polyglot-agent.js';
import { MultilingualString, EntityId } from '../base-domain.js';

/**
 * DDD development phase
 */
export enum DDDPhase {
  DISCOVERY = 'discovery',
  MODELING = 'modeling',
  IMPLEMENTATION = 'implementation',
  TESTING = 'testing',
  DEPLOYMENT = 'deployment',
}

/**
 * Bounded context definition
 */
export interface BoundedContext {
  id: string;
  name: MultilingualString;
  description: MultilingualString;
  aggregates: AggregateDefinition[];
  services: ServiceDefinition[];
  events: EventDefinition[];
  language: SupportedLanguage;
  team?: string;
}

/**
 * Aggregate definition for development
 */
export interface AggregateDefinition {
  id: string;
  name: MultilingualString;
  description: MultilingualString;
  properties: PropertyDefinition[];
  methods: MethodDefinition[];
  events: string[];
  invariants: string[];
}

/**
 * Property definition
 */
export interface PropertyDefinition {
  name: string;
  type: string;
  required: boolean;
  multilingual: boolean;
  validation?: string;
}

/**
 * Method definition
 */
export interface MethodDefinition {
  name: string;
  description: MultilingualString;
  parameters: ParameterDefinition[];
  returnType: string;
  businessRules: string[];
}

/**
 * Parameter definition
 */
export interface ParameterDefinition {
  name: string;
  type: string;
  required: boolean;
  description?: string;
}

/**
 * Service definition
 */
export interface ServiceDefinition {
  id: string;
  name: MultilingualString;
  description: MultilingualString;
  operations: MethodDefinition[];
  dependencies: string[];
}

/**
 * Event definition
 */
export interface EventDefinition {
  id: string;
  name: string;
  description: MultilingualString;
  payload: PropertyDefinition[];
  source: string;
  targets: string[];
}

/**
 * DDD Development Service
 */
export class DDDDevelopmentService {
  private boundedContexts: Map<string, BoundedContext> = new Map();
  private currentPhase: DDDPhase = DDDPhase.DISCOVERY;
  private commandBus: CommandBus;
  private workflows: Map<string, WorkflowAggregate> = new Map();
  private commandHandlers: Map<string, any> = new Map();
  
  constructor(
    private logger: ILogger,
    private polyglotAgent: PolyglotAgent,
  ) {
    this.commandBus = new CommandBus(logger);
    this.registerDefaultHandlers();
  }
  
  /**
   * Register default command handlers
   */
  private registerDefaultHandlers(): void {
    // Register handlers for workflow commands
    this.commandBus.register('CreateBoundedContext', {
      handle: async (command: ICreateCommand) => this.handleCreateBoundedContext(command),
      canHandle: (cmd) => cmd.type === 'CreateBoundedContext',
    });
    
    this.commandBus.register('AddAggregate', {
      handle: async (command: any) => this.handleAddAggregate(command),
      canHandle: (cmd) => cmd.type === 'AddAggregate',
    });
    
    this.commandBus.register('GenerateCode', {
      handle: async (command: any) => this.handleGenerateCode(command),
      canHandle: (cmd) => cmd.type === 'GenerateCode',
    });
  }
  
  /**
   * Handle create bounded context command
   */
  private async handleCreateBoundedContext(command: ICreateCommand): Promise<ICommandResult> {
    try {
      const context = await this.createBoundedContext(
        command.name,
        command.description,
        {
          team: command.properties?.team,
          language: command.language,
        },
      );
      
      return {
        success: true,
        data: context,
        aggregateId: context.id,
      };
    } catch (error) {
      return {
        success: false,
        error: error instanceof Error ? error.message : 'Unknown error',
      };
    }
  }
  
  /**
   * Handle add aggregate command
   */
  private async handleAddAggregate(command: any): Promise<ICommandResult> {
    try {
      await this.addAggregate(command.contextId, command.aggregate);
      
      return {
        success: true,
        data: { message: 'Aggregate added successfully' },
      };
    } catch (error) {
      return {
        success: false,
        error: error instanceof Error ? error.message : 'Unknown error',
      };
    }
  }
  
  /**
   * Handle generate code command
   */
  private async handleGenerateCode(command: any): Promise<ICommandResult> {
    try {
      const files = await this.generateCode(command.contextId, command.options);
      
      return {
        success: true,
        data: { files: Array.from(files.entries()) },
      };
    } catch (error) {
      return {
        success: false,
        error: error instanceof Error ? error.message : 'Unknown error',
      };
    }
  }
  
  /**
   * Start DDD development process
   */
  async startDevelopment(
    projectName: Partial<Record<SupportedLanguage, string>>,
    description: Partial<Record<SupportedLanguage, string>>,
    options: {
      methodology?: 'event-storming' | 'domain-storytelling' | 'example-mapping';
      team?: string;
      primaryLanguage?: SupportedLanguage;
    } = {},
  ): Promise<WorkflowAggregate> {
    this.logger.info('Starting DDD development process', {
      project: projectName,
      methodology: options.methodology || 'event-storming',
    });
    
    // Create DDD workflow
    const workflow = this.createDDDWorkflow(projectName, description, options);
    this.workflows.set(workflow.id.toString(), workflow);
    
    // Start discovery phase
    await this.startDiscoveryPhase(workflow, options);
    
    return workflow;
  }
  
  /**
   * Create DDD development workflow
   */
  private createDDDWorkflow(
    projectName: Partial<Record<SupportedLanguage, string>>,
    description: Partial<Record<SupportedLanguage, string>>,
    options: any,
  ): WorkflowAggregate {
    const workflow = WorkflowAggregate.create(
      projectName,
      description,
      options.primaryLanguage ? [options.primaryLanguage] : [SupportedLanguage.EN],
    );
    
    // Add DDD phases as workflow steps
    this.addDDDPhases(workflow, options.primaryLanguage || SupportedLanguage.EN);
    
    workflow.activate();
    return workflow;
  }
  
  /**
   * Add DDD phases to workflow
   */
  private addDDDPhases(workflow: WorkflowAggregate, language: SupportedLanguage): void {
    const phases = [
      {
        phase: DDDPhase.DISCOVERY,
        name: {
          [SupportedLanguage.EN]: 'Domain Discovery',
          [SupportedLanguage.RU]: 'Исследование домена',
          [SupportedLanguage.JA]: 'ドメイン探索',
          [SupportedLanguage.ZH_CN]: '领域发现',
        },
        description: {
          [SupportedLanguage.EN]: 'Discover domain concepts through event storming',
          [SupportedLanguage.RU]: 'Обнаружение доменных концепций через event storming',
          [SupportedLanguage.JA]: 'イベントストーミングによるドメイン概念の発見',
          [SupportedLanguage.ZH_CN]: '通过事件风暴发现领域概念',
        },
        agent: 'domain-expert',
        capabilities: ['event-storming', 'domain-analysis', 'ubiquitous-language'],
      },
      {
        phase: DDDPhase.MODELING,
        name: {
          [SupportedLanguage.EN]: 'Domain Modeling',
          [SupportedLanguage.RU]: 'Моделирование домена',
          [SupportedLanguage.JA]: 'ドメインモデリング',
          [SupportedLanguage.ZH_CN]: '领域建模',
        },
        description: {
          [SupportedLanguage.EN]: 'Create domain models with aggregates and entities',
          [SupportedLanguage.RU]: 'Создание доменных моделей с агрегатами и сущностями',
          [SupportedLanguage.JA]: '集約とエンティティを使用したドメインモデルの作成',
          [SupportedLanguage.ZH_CN]: '使用聚合和实体创建领域模型',
        },
        agent: 'architect',
        capabilities: ['aggregate-design', 'entity-modeling', 'value-objects'],
      },
      {
        phase: DDDPhase.IMPLEMENTATION,
        name: {
          [SupportedLanguage.EN]: 'Implementation',
          [SupportedLanguage.RU]: 'Реализация',
          [SupportedLanguage.JA]: '実装',
          [SupportedLanguage.ZH_CN]: '实现',
        },
        description: {
          [SupportedLanguage.EN]: 'Implement domain models and services',
          [SupportedLanguage.RU]: 'Реализация доменных моделей и сервисов',
          [SupportedLanguage.JA]: 'ドメインモデルとサービスの実装',
          [SupportedLanguage.ZH_CN]: '实现领域模型和服务',
        },
        agent: 'developer',
        capabilities: ['coding', 'repository-pattern', 'domain-services'],
      },
      {
        phase: DDDPhase.TESTING,
        name: {
          [SupportedLanguage.EN]: 'Testing',
          [SupportedLanguage.RU]: 'Тестирование',
          [SupportedLanguage.JA]: 'テスト',
          [SupportedLanguage.ZH_CN]: '测试',
        },
        description: {
          [SupportedLanguage.EN]: 'Test domain logic and invariants',
          [SupportedLanguage.RU]: 'Тестирование доменной логики и инвариантов',
          [SupportedLanguage.JA]: 'ドメインロジックと不変条件のテスト',
          [SupportedLanguage.ZH_CN]: '测试领域逻辑和不变量',
        },
        agent: 'tester',
        capabilities: ['unit-testing', 'integration-testing', 'invariant-testing'],
      },
    ];
    
    let previousStep: string | undefined;
    
    for (const phase of phases) {
      workflow.addStep(
        phase.name,
        phase.description,
        phase.agent,
        phase.capabilities,
        previousStep ? [previousStep] : [],
      );
      previousStep = `step-${workflow.getProgress().total}`;
    }
  }
  
  /**
   * Start discovery phase
   */
  private async startDiscoveryPhase(
    workflow: WorkflowAggregate,
    options: any,
  ): Promise<void> {
    this.currentPhase = DDDPhase.DISCOVERY;
    
    const methodology = options.methodology || 'event-storming';
    
    switch (methodology) {
      case 'event-storming':
        await this.runEventStorming(workflow, options);
        break;
      case 'domain-storytelling':
        await this.runDomainStorytelling(workflow, options);
        break;
      case 'example-mapping':
        await this.runExampleMapping(workflow, options);
        break;
    }
  }
  
  /**
   * Run event storming session
   */
  private async runEventStorming(
    workflow: WorkflowAggregate,
    options: any,
  ): Promise<void> {
    this.logger.info('Running event storming session');
    
    // Use polyglot agent to facilitate event storming
    const prompt = `
    Facilitate an event storming session for ${workflow.getName(options.primaryLanguage || SupportedLanguage.EN)}.
    Identify:
    1. Domain events (things that happen)
    2. Commands (triggers for events)
    3. Aggregates (consistency boundaries)
    4. Bounded contexts (logical boundaries)
    5. Read models (queries and views)
    `;
    
    const result = await this.polyglotAgent.processInNativeLanguage(
      prompt,
      options.primaryLanguage,
    );
    
    // Parse and store discovered concepts
    // In real implementation, this would be interactive
    this.logger.info('Event storming completed', {
      language: result.language,
      confidence: result.confidence,
    });
  }
  
  /**
   * Run domain storytelling session
   */
  private async runDomainStorytelling(
    workflow: WorkflowAggregate,
    options: any,
  ): Promise<void> {
    this.logger.info('Running domain storytelling session');
    // Implementation for domain storytelling
  }
  
  /**
   * Run example mapping session
   */
  private async runExampleMapping(
    workflow: WorkflowAggregate,
    options: any,
  ): Promise<void> {
    this.logger.info('Running example mapping session');
    // Implementation for example mapping
  }
  
  /**
   * Create bounded context
   */
  async createBoundedContext(
    name: Partial<Record<SupportedLanguage, string>>,
    description: Partial<Record<SupportedLanguage, string>>,
    options: {
      team?: string;
      language?: SupportedLanguage;
    } = {},
  ): Promise<BoundedContext> {
    const id = EntityId.generate().toString();
    
    const context: BoundedContext = {
      id,
      name: new MultilingualString(name),
      description: new MultilingualString(description),
      aggregates: [],
      services: [],
      events: [],
      language: options.language || SupportedLanguage.EN,
      team: options.team,
    };
    
    this.boundedContexts.set(id, context);
    
    this.logger.info('Created bounded context', {
      id,
      name: name[SupportedLanguage.EN],
    });
    
    return context;
  }
  
  /**
   * Add aggregate to bounded context
   */
  async addAggregate(
    contextId: string,
    aggregate: AggregateDefinition,
  ): Promise<void> {
    const context = this.boundedContexts.get(contextId);
    if (!context) {
      throw new Error(`Bounded context not found: ${contextId}`);
    }
    
    context.aggregates.push(aggregate);
    
    this.logger.info('Added aggregate to bounded context', {
      contextId,
      aggregateName: aggregate.name.get(SupportedLanguage.EN),
    });
  }
  
  /**
   * Generate code from bounded context
   */
  async generateCode(
    contextId: string,
    options: {
      language?: 'typescript' | 'javascript' | 'python' | 'java';
      includeTests?: boolean;
      includeRepositories?: boolean;
      includeServices?: boolean;
    } = {},
  ): Promise<Map<string, string>> {
    const context = this.boundedContexts.get(contextId);
    if (!context) {
      throw new Error(`Bounded context not found: ${contextId}`);
    }
    
    const files = new Map<string, string>();
    
    // Generate aggregate files
    for (const aggregate of context.aggregates) {
      const code = this.generateAggregateCode(aggregate, options);
      const fileName = `${aggregate.name.get(SupportedLanguage.EN)}.${options.language === 'python' ? 'py' : 'ts'}`;
      files.set(fileName, code);
      
      if (options.includeTests) {
        const testCode = this.generateAggregateTests(aggregate, options);
        const testFileName = `${aggregate.name.get(SupportedLanguage.EN)}.test.${options.language === 'python' ? 'py' : 'ts'}`;
        files.set(testFileName, testCode);
      }
    }
    
    // Generate repository interfaces
    if (options.includeRepositories) {
      for (const aggregate of context.aggregates) {
        const repoCode = this.generateRepositoryInterface(aggregate, options);
        const repoFileName = `${aggregate.name.get(SupportedLanguage.EN)}Repository.${options.language === 'python' ? 'py' : 'ts'}`;
        files.set(repoFileName, repoCode);
      }
    }
    
    // Generate domain services
    if (options.includeServices) {
      for (const service of context.services) {
        const serviceCode = this.generateServiceCode(service, options);
        const serviceFileName = `${service.name.get(SupportedLanguage.EN)}Service.${options.language === 'python' ? 'py' : 'ts'}`;
        files.set(serviceFileName, serviceCode);
      }
    }
    
    this.logger.info('Generated code for bounded context', {
      contextId,
      filesGenerated: files.size,
    });
    
    return files;
  }
  
  /**
   * Generate aggregate code
   */
  private generateAggregateCode(
    aggregate: AggregateDefinition,
    options: any,
  ): string {
    const className = aggregate.name.get(SupportedLanguage.EN);
    
    if (options.language === 'typescript' || !options.language) {
      return `/**
 * ${className} Aggregate
 * ${aggregate.description.get(SupportedLanguage.EN)}
 */

import { AggregateRoot, EntityId, MultilingualString } from '@claude-flow/domain';
import { SupportedLanguage } from '@claude-flow/types';

export interface ${className}Props {
${aggregate.properties.map(p => `  ${p.name}${p.required ? '' : '?'}: ${p.multilingual ? 'MultilingualString' : p.type};`).join('\n')}
}

export class ${className} extends AggregateRoot<${className}Props> {
  constructor(props: ${className}Props, id?: EntityId) {
    super(props, id);
    this.validateInvariants();
  }

  private validateInvariants(): void {
${aggregate.invariants.map(inv => `    // ${inv}`).join('\n')}
  }

${aggregate.methods.map(m => `
  ${m.name}(${m.parameters.map(p => `${p.name}: ${p.type}`).join(', ')}): ${m.returnType} {
    // Business rules:
${m.businessRules.map(rule => `    // - ${rule}`).join('\n')}
    
    // Implementation here
    throw new Error('Not implemented');
  }`).join('\n')}
}

// Domain Events
${aggregate.events.map(event => `
export class ${event} extends DomainEvent {
  constructor(aggregateId: string, public readonly data: any) {
    super(aggregateId, '${event}');
  }
}`).join('\n')}`;
    }
    
    // Python implementation
    return '# Python implementation not yet available';
  }
  
  /**
   * Generate aggregate tests
   */
  private generateAggregateTests(
    aggregate: AggregateDefinition,
    options: any,
  ): string {
    const className = aggregate.name.get(SupportedLanguage.EN);
    
    return `import { ${className} } from './${className}';

describe('${className}', () => {
  describe('creation', () => {
    it('should create with valid props', () => {
      const aggregate = new ${className}({
        // Add test props
      });
      
      expect(aggregate).toBeDefined();
      expect(aggregate.id).toBeDefined();
    });
  });

${aggregate.methods.map(m => `
  describe('${m.name}', () => {
    it('should ${m.description.get(SupportedLanguage.EN)}', () => {
      // Test implementation
    });
  });`).join('\n')}

  describe('invariants', () => {
${aggregate.invariants.map(inv => `
    it('should enforce: ${inv}', () => {
      // Test invariant
    });`).join('\n')}
  });
});`;
  }
  
  /**
   * Generate repository interface
   */
  private generateRepositoryInterface(
    aggregate: AggregateDefinition,
    options: any,
  ): string {
    const className = aggregate.name.get(SupportedLanguage.EN);
    
    return `import { ${className} } from './${className}';
import { IRepository, EntityId } from '@claude-flow/domain';

export interface I${className}Repository extends IRepository<${className}> {
  // Custom query methods
  findByName(name: string): Promise<${className} | null>;
  // Add more custom queries as needed
}`;
  }
  
  /**
   * Generate service code
   */
  private generateServiceCode(
    service: ServiceDefinition,
    options: any,
  ): string {
    const className = service.name.get(SupportedLanguage.EN);
    
    return `import { DomainService } from '@claude-flow/domain';
${service.dependencies.map(dep => `import { ${dep} } from './${dep}';`).join('\n')}

export class ${className} extends DomainService {
  constructor(
${service.dependencies.map(dep => `    private ${dep.toLowerCase()}: ${dep},`).join('\n')}
  ) {
    super('${className}');
  }

${service.operations.map(op => `
  async ${op.name}(${op.parameters.map(p => `${p.name}: ${p.type}`).join(', ')}): Promise<${op.returnType}> {
    // ${op.description.get(SupportedLanguage.EN)}
    throw new Error('Not implemented');
  }`).join('\n')}
}`;
  }
  
  /**
   * Validate domain model
   */
  async validateDomainModel(contextId: string): Promise<{
    valid: boolean;
    issues: string[];
    suggestions: string[];
  }> {
    const context = this.boundedContexts.get(contextId);
    if (!context) {
      throw new Error(`Bounded context not found: ${contextId}`);
    }
    
    const issues: string[] = [];
    const suggestions: string[] = [];
    
    // Validate aggregates
    for (const aggregate of context.aggregates) {
      // Check for aggregate root
      if (!aggregate.properties.some(p => p.name === 'id')) {
        issues.push(`Aggregate ${aggregate.name.get(SupportedLanguage.EN)} missing id property`);
      }
      
      // Check for at least one method
      if (aggregate.methods.length === 0) {
        suggestions.push(`Aggregate ${aggregate.name.get(SupportedLanguage.EN)} has no behavior - consider if it should be a value object`);
      }
      
      // Check for invariants
      if (aggregate.invariants.length === 0) {
        suggestions.push(`Aggregate ${aggregate.name.get(SupportedLanguage.EN)} has no invariants - add business rules`);
      }
    }
    
    // Check for bounded context cohesion
    if (context.aggregates.length > 10) {
      suggestions.push('Bounded context might be too large - consider splitting');
    }
    
    return {
      valid: issues.length === 0,
      issues,
      suggestions,
    };
  }
  
  /**
   * Execute DDD command
   */
  async executeCommand(command: ICommand): Promise<ICommandResult> {
    this.logger.info('Executing DDD command', {
      type: command.constructor.name,
      id: command.id,
    });
    
    return await this.commandBus.execute(command);
  }
  
  /**
   * Execute multiple commands in a transaction
   */
  async executeCommandSequence(commands: ICommand[]): Promise<ICommandResult[]> {
    this.logger.info('Executing command sequence', {
      count: commands.length,
    });
    
    const results: ICommandResult[] = [];
    
    for (const command of commands) {
      const result = await this.executeCommand(command);
      results.push(result);
      
      // Stop on first failure
      if (!result.success) {
        this.logger.error('Command sequence failed', {
          failedCommand: command.id,
          error: result.error,
        });
        break;
      }
    }
    
    return results;
  }
  
  /**
   * Register custom command handler
   */
  registerCommandHandler<TCommand extends ICommand>(
    commandType: string,
    handler: any,
  ): void {
    this.commandBus.register(commandType, handler);
    this.commandHandlers.set(commandType, handler);
    
    this.logger.info('Registered command handler', { commandType });
  }
  
  /**
   * Get current development status
   */
  getStatus(): {
    phase: DDDPhase;
    boundedContexts: number;
    aggregates: number;
    services: number;
    events: number;
  } {
    let totalAggregates = 0;
    let totalServices = 0;
    let totalEvents = 0;
    
    for (const context of this.boundedContexts.values()) {
      totalAggregates += context.aggregates.length;
      totalServices += context.services.length;
      totalEvents += context.events.length;
    }
    
    return {
      phase: this.currentPhase,
      boundedContexts: this.boundedContexts.size,
      aggregates: totalAggregates,
      services: totalServices,
      events: totalEvents,
    };
  }
}