import { Injectable, Logger } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';

@Injectable()
export class BinanceProvider {
  private readonly logger = new Logger(BinanceProvider.name);

  constructor(private configService: ConfigService) {}

  /**
   * Mock Binance Pay Order Creation
   * Will lead to a success/fail redirect for testing
   */
  async createOrder(tenantId: string, amount: number, plan: string) {
    this.logger.log(`[Mock] Creating Binance Pay order for ${tenantId} - ${plan}`);
    
    // In production, this calls https://bpay.binanceapi.com/binancepay/openapi/v2/order
    // and returns a checkoutUrl.
    
    return {
      checkoutUrl: `https://map-dashbord.intaleqapp.com/api/billing/mock-binance-success?tenantId=${tenantId}&plan=${plan}`,
      prepayId: `mock_${Date.now()}`
    };
  }

  /**
   * Mock Webhook Signature Verification
   */
  verifySignature(payload: any, signature: string): boolean {
    // In production, uses HMAC-SHA512 with Binance Secret Key
    return true; 
  }
}