// CBD Engine Adapter - Interface with existing CBD Engine
import {
  CNDConfig,
  CNDConnectionError,
  QueryResult,
  VectorResult,
  TimeSeriesPoint
} from './types.js';

export class CBDAdapter {
  private config: CNDConfig['cbd'];
  private connected: boolean = false;

  constructor(config: CNDConfig['cbd']) {
    this.config = config;
  }

  async connect(): Promise<void> {
    try {
      // Connect to CBD Engine
      // In real implementation, this would connect to the actual CBD Engine
      // For now, we'll simulate the connection
      console.log(`Connecting to CBD Engine at ${this.config.host}:${this.config.port}`);

      // Simulate connection delay
      await new Promise(resolve => setTimeout(resolve, 100));

      this.connected = true;
      console.log('Successfully connected to CBD Engine');
    } catch (error) {
      throw new CNDConnectionError(
        `Failed to connect to CBD Engine: ${error}`,
        this.config.host,
        this.config.port
      );
    }
  }

  async disconnect(): Promise<void> {
    this.connected = false;
    console.log('Disconnected from CBD Engine');
  }

  isConnected(): boolean {
    return this.connected;
  }

  // SQL Operations
  async executeSQL(query: string, params: any[] = []): Promise<QueryResult> {
    this.ensureConnected();

    // Simulate SQL execution
    console.log('CBD Adapter: Executing SQL:', query, params);

    // In real implementation, this would call CBD Engine's SQL interface
    return {
      data: [],
      count: 0,
      executionTime: 50,
      query
    };
  }

  // Document Operations
  async storeDocument(collection: string, document: any): Promise<any> {
    this.ensureConnected();

    console.log(`CBD Adapter: Storing document in ${collection}:`, document);

    // In real implementation, this would store in CBD Engine's memory system
    return {
      ...document,
      id: document.id || this.generateId(),
      createdAt: new Date(),
      updatedAt: new Date()
    };
  }

  async findDocuments(collection: string, query: any): Promise<any[]> {
    this.ensureConnected();

    console.log(`CBD Adapter: Finding documents in ${collection}:`, query);

    // In real implementation, this would query CBD Engine's memory system
    return [];
  }

  async updateDocument(collection: string, id: string, updates: any): Promise<any> {
    this.ensureConnected();

    console.log(`CBD Adapter: Updating document ${id} in ${collection}:`, updates);

    // In real implementation, this would update in CBD Engine
    return {
      ...updates,
      id,
      updatedAt: new Date()
    };
  }

  async deleteDocument(collection: string, id: string): Promise<boolean> {
    this.ensureConnected();

    console.log(`CBD Adapter: Deleting document ${id} from ${collection}`);

    // In real implementation, this would delete from CBD Engine
    return true;
  }

  // Vector Operations
  async storeVector(collection: string, id: string, vector: number[], metadata: any): Promise<void> {
    this.ensureConnected();

    console.log(`CBD Adapter: Storing vector ${id} in ${collection}:`, { vector: vector.length, metadata });

    // In real implementation, this would use CBD Engine's vector capabilities
  }

  async searchVectors(collection: string, vector: number[], options: any): Promise<VectorResult[]> {
    this.ensureConnected();

    console.log(`CBD Adapter: Vector search in ${collection}:`, { vector: vector.length, options });

    // In real implementation, this would use CBD Engine's vector search
    return [];
  }

  // Time Series Operations
  async storeTimeSeries(metric: string, timestamp: Date, value: number, tags: any): Promise<void> {
    this.ensureConnected();

    console.log(`CBD Adapter: Storing time series ${metric}:`, { timestamp, value, tags });

    // In real implementation, this would use CBD Engine's time series capabilities
  }

  async queryTimeSeries(metric: string, start: Date, end: Date, tags?: any): Promise<TimeSeriesPoint[]> {
    this.ensureConnected();

    console.log(`CBD Adapter: Querying time series ${metric}:`, { start, end, tags });

    // In real implementation, this would query CBD Engine's time series data
    return [];
  }

  // Graph Operations
  async createNode(labels: string[], properties: any): Promise<any> {
    this.ensureConnected();

    console.log('CBD Adapter: Creating graph node:', { labels, properties });

    // In real implementation, this would create a node in CBD Engine
    return {
      id: this.generateId(),
      labels,
      properties,
      createdAt: new Date()
    };
  }

  async createRelationship(fromId: string, toId: string, type: string, properties: any): Promise<any> {
    this.ensureConnected();

    console.log('CBD Adapter: Creating relationship:', { fromId, toId, type, properties });

    // In real implementation, this would create a relationship in CBD Engine
    return {
      id: this.generateId(),
      type,
      startNode: fromId,
      endNode: toId,
      properties,
      createdAt: new Date()
    };
  }

  async queryGraph(pattern: string, conditions?: any): Promise<any[]> {
    this.ensureConnected();

    console.log('CBD Adapter: Graph query:', { pattern, conditions });

    // In real implementation, this would execute graph queries in CBD Engine
    return [];
  }

  // Cache Operations
  async getCache(key: string): Promise<any> {
    this.ensureConnected();

    console.log(`CBD Adapter: Cache get: ${key}`);

    // In real implementation, this would use CBD Engine's caching
    return null;
  }

  async setCache(key: string, value: any, ttl?: number): Promise<void> {
    this.ensureConnected();

    console.log(`CBD Adapter: Cache set: ${key}`, { value, ttl });

    // In real implementation, this would use CBD Engine's caching
  }

  async deleteCache(key: string): Promise<boolean> {
    this.ensureConnected();

    console.log(`CBD Adapter: Cache delete: ${key}`);

    // In real implementation, this would delete from CBD Engine's cache
    return true;
  }

  // Transaction Operations
  async beginTransaction(): Promise<string> {
    this.ensureConnected();

    const transactionId = this.generateId();
    console.log(`CBD Adapter: Begin transaction: ${transactionId}`);

    // In real implementation, this would start a transaction in CBD Engine
    return transactionId;
  }

  async commitTransaction(transactionId: string): Promise<void> {
    this.ensureConnected();

    console.log(`CBD Adapter: Commit transaction: ${transactionId}`);

    // In real implementation, this would commit the transaction in CBD Engine
  }

  async rollbackTransaction(transactionId: string): Promise<void> {
    this.ensureConnected();

    console.log(`CBD Adapter: Rollback transaction: ${transactionId}`);

    // In real implementation, this would rollback the transaction in CBD Engine
  }

  // Utility Methods
  private ensureConnected(): void {
    if (!this.connected) {
      throw new CNDConnectionError(
        'Not connected to CBD Engine',
        this.config.host,
        this.config.port
      );
    }
  }

  private generateId(): string {
    return Date.now().toString(36) + Math.random().toString(36).substr(2);
  }

  // Health Check
  async healthCheck(): Promise<{ status: string; latency: number }> {
    const start = Date.now();

    try {
      // In real implementation, this would ping CBD Engine
      await new Promise(resolve => setTimeout(resolve, 10));

      return {
        status: this.connected ? 'healthy' : 'disconnected',
        latency: Date.now() - start
      };
    } catch (error) {
      return {
        status: 'error',
        latency: Date.now() - start
      };
    }
  }
}