// Basic MCP server implementation
import { Server } from '@modelcontextprotocol/sdk/server/index.js';
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
import {
  CallToolRequestSchema,
  ListToolsRequestSchema,
  Tool
} from '@modelcontextprotocol/sdk/types.js';
class BaseMCPServer {
  private server: Server;
  constructor(name: string, version: string) {
    this.server = new Server(
      { name, version },
      { capabilities: { tools: {} } }
    );
    this.setupHandlers();
  }
  private setupHandlers() {
    this.server.setRequestHandler(ListToolsRequestSchema, async () => ({
      tools: this.getTools()
    }));
    this.server.setRequestHandler(CallToolRequestSchema, async (request) =>
      this.handleToolCall(request.params.name, request.params.arguments)
    );
  }
  protected abstract getTools(): Tool[];
  protected abstract handleToolCall(name: string, args: any): Promise;
  async start() {
    const transport = new StdioServerTransport();
    await this.server.connect(transport);
  }
}

// Advanced MCP server registry with dynamic discovery
interface MCPServerConfig {
  name: string;
  command: string;
  args: string[];
  env?: Record;
  capabilities: string[];
}
class MCPServerRegistry {
  private servers = new Map();
  registerServer(config: MCPServerConfig) {
    this.servers.set(config.name, config);
  }
  async discoverServers(directory: string): Promise {
    const serverFiles = await this.scanForMCPServers(directory);
    const configs: MCPServerConfig[] = [];
    for (const file of serverFiles) {
      const manifest = await this.parseMCPManifest(file);
      if (manifest) {
        configs.push(manifest);
        this.registerServer(manifest);
      }
    }
    return configs;
  }
  private async scanForMCPServers(dir: string): Promise {
    // Implementation for scanning directory for MCP server manifests
    return [];
  }
  private async parseMCPManifest(file: string): Promise {
    // Implementation for parsing MCP server configuration
    return null;
  }
}

// DeepGraph MCP server for code analysis
import { AST } from 'typescript';
import { Graph, Node, Edge } from 'graphology';
interface CodeNode {
  id: string;
  type: 'function' | 'class' | 'interface' | 'module' | 'variable';
  name: string;
  file: string;
  lineStart: number;
  lineEnd: number;
  metadata: Record;
}
interface CodeRelation {
  source: string;
  target: string;
  type: 'calls' | 'imports' | 'extends' | 'implements' | 'uses';
  weight: number;
}
class DeepGraphMCPServer extends BaseMCPServer {
  private knowledgeGraph = new Graph();
  private codeAnalyzer = new TypeScriptAnalyzer();
  constructor() {
    super('deepgraph-mcp', '1.0.0');
  }
  protected getTools(): Tool[] {
    return [
      {
        name: 'analyze_repository',
        description: 'Analyze a code repository and build knowledge graph',
        inputSchema: {
          type: 'object',
          properties: {
            path: { type: 'string' },
            includeTests: { type: 'boolean', default: false },
            maxDepth: { type: 'number', default: 10 }
          },
          required: ['path']
        }
      },
      {
        name: 'query_graph',
        description: 'Query the knowledge graph with semantic search',
        inputSchema: {
          type: 'object',
          properties: {
            query: { type: 'string' },
            nodeTypes: { type: 'array', items: { type: 'string' } },
            relationTypes: { type: 'array', items: { type: 'string' } }
          },
          required: ['query']
        }
      },
      {
        name: 'find_dependencies',
        description: 'Find dependencies and dependents of a code element',
        inputSchema: {
          type: 'object',
          properties: {
            elementId: { type: 'string' },
            depth: { type: 'number', default: 3 },
            direction: { type: 'string', enum: ['incoming', 'outgoing', 'both'] }
          },
          required: ['elementId']
        }
      }
    ];
  }
  protected async handleToolCall(name: string, args: any) {
    switch (name) {
      case 'analyze_repository':
        return this.analyzeRepository(args.path, args);
      case 'query_graph':
        return this.queryGraph(args.query, args);
      case 'find_dependencies':
        return this.findDependencies(args.elementId, args);
      default:
        throw new Error(Unknown tool: ${name});
    }
  }
  private async analyzeRepository(path: string, options: any) {
    const files = await this.scanCodebase(path);
    const analysisResults = [];
    for (const file of files) {
      const analysis = await this.codeAnalyzer.analyzeFile(file);
      this.addToKnowledgeGraph(analysis);
      analysisResults.push(analysis);
    }
    return {
      totalFiles: files.length,
      totalNodes: this.knowledgeGraph.order,
      totalEdges: this.knowledgeGraph.size,
      summary: this.generateGraphSummary()
    };
  }
  private async queryGraph(query: string, options: any) {
    // Implement semantic search over the knowledge graph
    const embeddings = await this.generateQueryEmbedding(query);
    const candidates = this.findSimilarNodes(embeddings);
    return {
      results: candidates.map(node => ({
        node: this.knowledgeGraph.getNodeAttributes(node),
        relevance: this.calculateRelevance(node, query),
        context: this.getNodeContext(node)
      }))
    };
  }
  private generateGraphSummary() {
    const nodeTypes = new Map();
    const relationTypes = new Map();
    this.knowledgeGraph.forEachNode((node, attributes) => {
      nodeTypes.set(attributes.type, (nodeTypes.get(attributes.type) || 0) + 1);
    });
    this.knowledgeGraph.forEachEdge((edge, attributes) => {
      relationTypes.set(attributes.type, (relationTypes.get(attributes.type) || 0) + 1);
    });
    return { nodeTypes: Object.fromEntries(nodeTypes), relationTypes: Object.fromEntries(relationTypes) };
  }
}

// Sophisticated TypeScript code analyzer
class TypeScriptAnalyzer {
  private program: ts.Program;
  private checker: ts.TypeChecker;
  async analyzeFile(filePath: string): Promise {
    const sourceFile = this.program.getSourceFile(filePath);
    if (!sourceFile) throw new Error(File not found: ${filePath});
    const analysis: FileAnalysis = {
      filePath,
      nodes: [],
      relations: [],
      complexity: 0,
      maintainabilityIndex: 0
    };
    const visitor = (node: ts.Node) => {
      switch (node.kind) {
        case ts.SyntaxKind.FunctionDeclaration:
          analysis.nodes.push(this.analyzeFunctionDeclaration(node as ts.FunctionDeclaration));
          break;
        case ts.SyntaxKind.ClassDeclaration:
          analysis.nodes.push(this.analyzeClassDeclaration(node as ts.ClassDeclaration));
          break;
        case ts.SyntaxKind.InterfaceDeclaration:
          analysis.nodes.push(this.analyzeInterfaceDeclaration(node as ts.InterfaceDeclaration));
          break;
        case ts.SyntaxKind.CallExpression:
          analysis.relations.push(this.analyzeCallExpression(node as ts.CallExpression));
          break;
      }
      ts.forEachChild(node, visitor);
    };
    visitor(sourceFile);
    analysis.complexity = this.calculateCyclomaticComplexity(sourceFile);
    analysis.maintainabilityIndex = this.calculateMaintainabilityIndex(analysis);
    return analysis;
  }
  private analyzeFunctionDeclaration(node: ts.FunctionDeclaration): CodeNode {
    const symbol = this.checker.getSymbolAtLocation(node.name!);
    const type = this.checker.getTypeOfSymbolAtLocation(symbol!, node);
    return {
      id: this.generateNodeId(node),
      type: 'function',
      name: node.name?.text || 'anonymous',
      file: node.getSourceFile().fileName,
      lineStart: node.getStart(),
      lineEnd: node.getEnd(),
      metadata: {
        parameters: node.parameters.map(p => ({
          name: p.name.getText(),
          type: this.checker.typeToString(this.checker.getTypeAtLocation(p))
        })),
        returnType: this.checker.typeToString(type),
        isAsync: !!(node.modifiers?.find(m => m.kind === ts.SyntaxKind.AsyncKeyword)),
        isExported: this.isExported(node),
        documentation: this.getDocumentation(symbol)
      }
    };
  }
}

// Browser MCP server with Puppeteer integration
import puppeteer, { Browser, Page } from 'puppeteer';
class BrowserMCPServer extends BaseMCPServer {
  private browser: Browser | null = null;
  private pages = new Map();
  constructor() {
    super('browser-mcp', '1.0.0');
  }
  protected getTools(): Tool[] {
    return [
      {
        name: 'launch_browser',
        description: 'Launch a new browser instance',
        inputSchema: {
          type: 'object',
          properties: {
            headless: { type: 'boolean', default: true },
            viewport: {
              type: 'object',
              properties: {
                width: { type: 'number', default: 1920 },
                height: { type: 'number', default: 1080 }
              }
            }
          }
        }
      },
      {
        name: 'navigate',
        description: 'Navigate to a URL',
        inputSchema: {
          type: 'object',
          properties: {
            url: { type: 'string' },
            waitUntil: {
              type: 'string',
              enum: ['load', 'domcontentloaded', 'networkidle0', 'networkidle2'],
              default: 'networkidle2'
            }
          },
          required: ['url']
        }
      },
      {
        name: 'screenshot',
        description: 'Take a screenshot of the current page',
        inputSchema: {
          type: 'object',
          properties: {
            fullPage: { type: 'boolean', default: false },
            format: { type: 'string', enum: ['png', 'jpeg'], default: 'png' },
            quality: { type: 'number', minimum: 0, maximum: 100 }
          }
        }
      },
      {
        name: 'extract_data',
        description: 'Extract data from the page using selectors',
        inputSchema: {
          type: 'object',
          properties: {
            selectors: {
              type: 'object',
              additionalProperties: { type: 'string' }
            }
          },
          required: ['selectors']
        }
      }
    ];
  }
  protected async handleToolCall(name: string, args: any) {
    switch (name) {
      case 'launch_browser':
        return this.launchBrowser(args);
      case 'navigate':
        return this.navigate(args.url, args.waitUntil);
      case 'screenshot':
        return this.takeScreenshot(args);
      case 'extract_data':
        return this.extractData(args.selectors);
      default:
        throw new Error(Unknown tool: ${name});
    }
  }
  private async launchBrowser(options: any) {
    this.browser = await puppeteer.launch({
      headless: options.headless ?? true,
      defaultViewport: options.viewport
    });
    const page = await this.browser.newPage();
    this.pages.set('default', page);
    return {
      success: true,
      message: 'Browser launched successfully',
      pageId: 'default'
    };
  }
  private async navigate(url: string, waitUntil: any) {
    const page = this.pages.get('default');
    if (!page) throw new Error('No active page. Launch browser first.');
    await page.goto(url, { waitUntil });
    return {
      success: true,
      url: page.url(),
      title: await page.title()
    };
  }
  private async extractData(selectors: Record) {
    const page = this.pages.get('default');
    if (!page) throw new Error('No active page');
    const data: Record = {};
    for (const [key, selector] of Object.entries(selectors)) {
      try {
        const element = await page.$(selector);
        if (element) {
          data[key] = await element.evaluate(el => el.textContent);
        }
      } catch (error) {
        data[key] = null;
      }
    }
    return { data };
  }
}

// Email MCP server with Gmail integration
import { google } from 'googleapis';
import { OAuth2Client } from 'google-auth-library';
interface EmailMessage {
  to: string[];
  subject: string;
  body: string;
  cc?: string[];
  bcc?: string[];
  attachments?: Array<{ filename: string; content: Buffer }>;
}
class EmailMCPServer extends BaseMCPServer {
  private gmail: any;
  private auth: OAuth2Client;
  constructor() {
    super('email-mcp', '1.0.0');
    this.initializeAuth();
  }
  private async initializeAuth() {
    this.auth = new google.auth.OAuth2(
      process.env.GMAIL_CLIENT_ID,
      process.env.GMAIL_CLIENT_SECRET,
      process.env.GMAIL_REDIRECT_URI
    );
    this.auth.setCredentials({
      refresh_token: process.env.GMAIL_REFRESH_TOKEN
    });
    this.gmail = google.gmail({ version: 'v1', auth: this.auth });
  }
  protected getTools(): Tool[] {
    return [
      {
        name: 'send_email',
        description: 'Send an email via Gmail',
        inputSchema: {
          type: 'object',
          properties: {
            to: { type: 'array', items: { type: 'string' } },
            subject: { type: 'string' },
            body: { type: 'string' },
            cc: { type: 'array', items: { type: 'string' } },
            bcc: { type: 'array', items: { type: 'string' } }
          },
          required: ['to', 'subject', 'body']
        }
      },
      {
        name: 'search_emails',
        description: 'Search emails using Gmail query syntax',
        inputSchema: {
          type: 'object',
          properties: {
            query: { type: 'string' },
            maxResults: { type: 'number', default: 10 }
          },
          required: ['query']
        }
      },
      {
        name: 'get_email',
        description: 'Get email details by ID',
        inputSchema: {
          type: 'object',
          properties: {
            messageId: { type: 'string' }
          },
          required: ['messageId']
        }
      }
    ];
  }
  protected async handleToolCall(name: string, args: any) {
    switch (name) {
      case 'send_email':
        return this.sendEmail(args);
      case 'search_emails':
        return this.searchEmails(args.query, args.maxResults);
      case 'get_email':
        return this.getEmail(args.messageId);
      default:
        throw new Error(Unknown tool: ${name});
    }
  }
  private async sendEmail(message: EmailMessage) {
    const email = this.createEmailContent(message);
    const response = await this.gmail.users.messages.send({
      userId: 'me',
      requestBody: {
        raw: Buffer.from(email).toString('base64')
          .replace(/\+/g, '-')
          .replace(/\//g, '_')
          .replace(/=+$/, '')
      }
    });
    return {
      success: true,
      messageId: response.data.id,
      threadId: response.data.threadId
    };
  }
  private createEmailContent(message: EmailMessage): string {
    const headers = [
      To: ${message.to.join(', ')},
      Subject: ${message.subject},
      message.cc ? Cc: ${message.cc.join(', ')} : null,
      message.bcc ? Bcc: ${message.bcc.join(', ')} : null,
      'Content-Type: text/html; charset=utf-8',
      'MIME-Version: 1.0'
    ].filter(Boolean).join('\r\n');
    return ${headers}\r\n\r\n${message.body};
  }
  private async searchEmails(query: string, maxResults: number) {
    const response = await this.gmail.users.messages.list({
      userId: 'me',
      q: query,
      maxResults
    });
    const messages = await Promise.all(
      (response.data.messages || []).map((msg: any) => this.getEmail(msg.id))
    );
    return { messages, count: messages.length };
  }
  private async getEmail(messageId: string) {
    const response = await this.gmail.users.messages.get({
      userId: 'me',
      id: messageId,
      format: 'full'
    });
    const headers = response.data.payload.headers;
    const getHeader = (name: string) =>
      headers.find((h: any) => h.name === name)?.value;
    return {
      id: response.data.id,
      threadId: response.data.threadId,
      from: getHeader('From'),
      to: getHeader('To'),
      subject: getHeader('Subject'),
      date: getHeader('Date'),
      snippet: response.data.snippet,
      body: this.extractEmailBody(response.data.payload)
    };
  }
}

// Domain-driven agent architecture
interface AgentDomain {
  name: string;
  capabilities: AgentCapability[];
  context: DomainContext;
  tools: Tool[];
}
interface AgentCapability {
  name: string;
  description: string;
  handler: (input: any) => Promise;
  requirements: string[];
}
interface DomainContext {
  entities: Map;
  services: Map;
  repositories: Map;
}
class DomainDrivenAgent {
  private domains = new Map();
  private eventBus = new EventEmitter();
  registerDomain(domain: AgentDomain) {
    this.domains.set(domain.name, domain);
    this.setupDomainEventHandlers(domain);
  }
  async executeCapability(
    domainName: string,
    capabilityName: string,
    input: any
  ) {
    const domain = this.domains.get(domainName);
    if (!domain) {
      throw new Error(Domain not found: ${domainName});
    }
    const capability = domain.capabilities.find(c => c.name === capabilityName);
    if (!capability) {
      throw new Error(Capability not found: ${capabilityName});
    }
    // Check requirements
    const missingRequirements = capability.requirements.filter(
      req => !this.checkRequirement(domain, req)
    );
    if (missingRequirements.length > 0) {
      throw new Error(Missing requirements: ${missingRequirements.join(', ')});
    }
    // Emit pre-execution event
    this.eventBus.emit('capability:before', {
      domain: domainName,
      capability: capabilityName,
      input
    });
    // Execute capability
    const result = await capability.handler(input);
    // Emit post-execution event
    this.eventBus.emit('capability:after', {
      domain: domainName,
      capability: capabilityName,
      input,
      result
    });
    return result;
  }
  private setupDomainEventHandlers(domain: AgentDomain) {
    // Set up event handlers for domain events
  }
  private checkRequirement(domain: AgentDomain, requirement: string): boolean {
    // Check if a requirement is satisfied
    return true;
  }
}

// Multi-agent orchestration system
interface AgentTask {
  id: string;
  type: string;
  priority: number;
  deadline?: Date;
  dependencies: string[];
  assignedAgent?: string;
  status: 'pending' | 'in_progress' | 'completed' | 'failed';
  result?: any;
}
class AgentOrchestrator {
  private agents = new Map();
  private taskQueue: AgentTask[] = [];
  private taskResults = new Map();
  registerAgent(id: string, agent: DomainDrivenAgent) {
    this.agents.set(id, agent);
  }
  async executePlan(tasks: AgentTask[]) {
    this.taskQueue = [...tasks].sort((a, b) => b.priority - a.priority);
    while (this.taskQueue.length > 0) {
      const readyTasks = this.getReadyTasks();
      if (readyTasks.length === 0) {
        throw new Error('Deadlock detected: no tasks can be executed');
      }
      await Promise.all(
        readyTasks.map(task => this.executeTask(task))
      );
    }
    return this.taskResults;
  }
  private getReadyTasks(): AgentTask[] {
    return this.taskQueue.filter(task => {
      if (task.status !== 'pending') return false;
      // Check if all dependencies are completed
      return task.dependencies.every(depId =>
        this.taskResults.has(depId)
      );
    });
  }
  private async executeTask(task: AgentTask) {
    task.status = 'in_progress';
    try {
      const agent = this.selectAgentForTask(task);
      const result = await agent.executeCapability(
        task.type,
        'execute',
        this.prepareDependencyData(task)
      );
      task.status = 'completed';
      task.result = result;
      this.taskResults.set(task.id, result);
      this.taskQueue = this.taskQueue.filter(t => t.id !== task.id);
    } catch (error) {
      task.status = 'failed';
      throw error;
    }
  }
  private selectAgentForTask(task: AgentTask): DomainDrivenAgent {
    // Implement agent selection logic based on task type and agent capabilities
    return this.agents.values().next().value;
  }
  private prepareDependencyData(task: AgentTask): any {
    return task.dependencies.reduce((acc, depId) => {
      acc[depId] = this.taskResults.get(depId);
      return acc;
    }, {} as Record);
  }
}

// Comprehensive monitoring for MCP servers
import { metrics, trace } from '@opentelemetry/api';
class MonitoredMCPServer extends BaseMCPServer {
  private meter = metrics.getMeter('mcp-server');
  private tracer = trace.getTracer('mcp-server');
  private toolCallCounter = this.meter.createCounter('tool_calls_total', {
    description: 'Total number of tool calls'
  });
  private toolCallDuration = this.meter.createHistogram('tool_call_duration_ms', {
    description: 'Tool call execution duration in milliseconds'
  });
  private errorCounter = this.meter.createCounter('tool_errors_total', {
    description: 'Total number of tool errors'
  });
  protected async handleToolCall(name: string, args: any) {
    const span = this.tracer.startSpan(tool.${name});
    const startTime = Date.now();
    try {
      this.toolCallCounter.add(1, { tool: name });
      const result = await super.handleToolCall(name, args);
      const duration = Date.now() - startTime;
      this.toolCallDuration.record(duration, { tool: name, status: 'success' });
      span.setStatus({ code: SpanStatusCode.OK });
      span.end();
      return result;
    } catch (error) {
      const duration = Date.now() - startTime;
      this.errorCounter.add(1, { tool: name, error: error.name });
      this.toolCallDuration.record(duration, { tool: name, status: 'error' });
      span.setStatus({
        code: SpanStatusCode.ERROR,
        message: error.message
      });
      span.recordException(error);
      span.end();
      throw error;
    }
  }
}

// Circuit breaker for resilient MCP operations
enum CircuitState {
  CLOSED = 'closed',
  OPEN = 'open',
  HALF_OPEN = 'half_open'
}
class CircuitBreaker {
  private state = CircuitState.CLOSED;
  private failureCount = 0;
  private successCount = 0;
  private lastFailureTime?: Date;
  constructor(
    private threshold: number = 5,
    private timeout: number = 60000,
    private halfOpenRequests: number = 3
  ) {}
  async execute(operation: () => Promise): Promise {
    if (this.state === CircuitState.OPEN) {
      if (this.shouldAttemptReset()) {
        this.state = CircuitState.HALF_OPEN;
        this.successCount = 0;
      } else {
        throw new Error('Circuit breaker is OPEN');
      }
    }
    try {
      const result = await operation();
      this.onSuccess();
      return result;
    } catch (error) {
      this.onFailure();
      throw error;
    }
  }
  private onSuccess() {
    this.failureCount = 0;
    if (this.state === CircuitState.HALF_OPEN) {
      this.successCount++;
      if (this.successCount >= this.halfOpenRequests) {
        this.state = CircuitState.CLOSED;
      }
    }
  }
  private onFailure() {
    this.failureCount++;
    this.lastFailureTime = new Date();
    if (this.failureCount >= this.threshold) {
      this.state = CircuitState.OPEN;
    }
  }
  private shouldAttemptReset(): boolean {
    return (
      this.lastFailureTime &&
      Date.now() - this.lastFailureTime.getTime() >= this.timeout
    );
  }
}

// Advanced memory system for AI agents
interface MemoryEntry {
  id: string;
  timestamp: Date;
  type: 'conversation' | 'task' | 'knowledge' | 'context';
  content: any;
  metadata: {
    importance: number;
    accessCount: number;
    lastAccessed: Date;
  };
}
class AgentMemorySystem {
  private shortTermMemory: MemoryEntry[] = [];
  private longTermMemory = new Map();
  private vectorStore: VectorDatabase;
  constructor(private maxShortTermSize: number = 100) {}
  async store(entry: Omit) {
    const memoryEntry: MemoryEntry = {
      ...entry,
      id: this.generateId(),
      metadata: {
        importance: this.calculateImportance(entry),
        accessCount: 0,
        lastAccessed: new Date()
      }
    };
    // Add to short-term memory
    this.shortTermMemory.push(memoryEntry);
    // Generate embeddings for semantic search
    const embedding = await this.generateEmbedding(entry.content);
    await this.vectorStore.upsert(memoryEntry.id, embedding, memoryEntry);
    // Consolidate if short-term memory is full
    if (this.shortTermMemory.length > this.maxShortTermSize) {
      await this.consolidateMemory();
    }
    return memoryEntry.id;
  }
  async recall(query: string, limit: number = 5): Promise {
    const queryEmbedding = await this.generateEmbedding(query);
    const results = await this.vectorStore.search(queryEmbedding, limit);
    return results.map(result => {
      const entry = result.metadata as MemoryEntry;
      entry.metadata.accessCount++;
      entry.metadata.lastAccessed = new Date();
      return entry;
    });
  }
  private async consolidateMemory() {
    // Sort by importance and recency
    const sorted = this.shortTermMemory.sort((a, b) => {
      const scoreA = this.calculateMemoryScore(a);
      const scoreB = this.calculateMemoryScore(b);
      return scoreB - scoreA;
    });
    // Keep top entries in short-term
    const toKeep = sorted.slice(0, this.maxShortTermSize / 2);
    const toArchive = sorted.slice(this.maxShortTermSize / 2);
    // Move less important entries to long-term memory
    for (const entry of toArchive) {
      this.longTermMemory.set(entry.id, entry);
    }
    this.shortTermMemory = toKeep;
  }
  private calculateMemoryScore(entry: MemoryEntry): number {
    const recencyScore = this.calculateRecency(entry.metadata.lastAccessed);
    const importanceScore = entry.metadata.importance;
    const accessScore = Math.log(entry.metadata.accessCount + 1);
    return recencyScore * 0.3 + importanceScore * 0.5 + accessScore * 0.2;
  }
}