payment.go raw

   1  package blossom
   2  
   3  import (
   4  	"net/http"
   5  )
   6  
   7  // PaymentChecker handles payment requirements (BUD-07)
   8  type PaymentChecker struct {
   9  	// Payment configuration would go here
  10  	// For now, this is a placeholder
  11  }
  12  
  13  // NewPaymentChecker creates a new payment checker
  14  func NewPaymentChecker() *PaymentChecker {
  15  	return &PaymentChecker{}
  16  }
  17  
  18  // CheckPaymentRequired checks if payment is required for an endpoint
  19  // Returns payment method headers if payment is required
  20  func (pc *PaymentChecker) CheckPaymentRequired(
  21  	endpoint string,
  22  ) (required bool, paymentHeaders map[string]string) {
  23  	// Placeholder implementation - always returns false
  24  	// In a real implementation, this would check:
  25  	// - Per-endpoint payment requirements
  26  	// - User payment status
  27  	// - Blob size/cost thresholds
  28  	// etc.
  29  	
  30  	return false, nil
  31  }
  32  
  33  // ValidatePayment validates a payment proof
  34  func (pc *PaymentChecker) ValidatePayment(
  35  	paymentMethod, proof string,
  36  ) (valid bool, err error) {
  37  	// Placeholder implementation
  38  	// In a real implementation, this would validate:
  39  	// - Cashu tokens (NUT-24)
  40  	// - Lightning payment preimages (BOLT-11)
  41  	// etc.
  42  	
  43  	return true, nil
  44  }
  45  
  46  // SetPaymentRequired sets a 402 Payment Required response with payment headers
  47  func SetPaymentRequired(w http.ResponseWriter, paymentHeaders map[string]string) {
  48  	for header, value := range paymentHeaders {
  49  		w.Header().Set(header, value)
  50  	}
  51  	w.WriteHeader(http.StatusPaymentRequired)
  52  }
  53  
  54