74 lines
2.2 KiB
Go
74 lines
2.2 KiB
Go
package payments
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import (
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"context"
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"fmt"
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"time"
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"github.com/saveinmed/backend-go/internal/domain"
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)
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// StripeGateway implements payment processing via Stripe.
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// In production, this would use the Stripe Go SDK.
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type StripeGateway struct {
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APIKey string
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MarketplaceCommission float64
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}
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func NewStripeGateway(apiKey string, commission float64) *StripeGateway {
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return &StripeGateway{
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APIKey: apiKey,
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MarketplaceCommission: commission,
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}
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}
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func (g *StripeGateway) CreatePreference(ctx context.Context, order *domain.Order) (*domain.PaymentPreference, error) {
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select {
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case <-ctx.Done():
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return nil, ctx.Err()
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default:
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}
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// Calculate marketplace fee
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fee := int64(float64(order.TotalCents) * (g.MarketplaceCommission / 100))
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// In production, this would:
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// 1. Create a Stripe PaymentIntent with transfer_data for connected accounts
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// 2. Set application_fee_amount for marketplace commission
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// 3. Return the client_secret for frontend confirmation
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pref := &domain.PaymentPreference{
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OrderID: order.ID,
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Gateway: "stripe",
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CommissionPct: g.MarketplaceCommission,
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MarketplaceFee: fee,
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SellerReceivable: order.TotalCents - fee,
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PaymentURL: fmt.Sprintf("https://checkout.stripe.com/pay/%s", order.ID.String()),
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// In production: would include client_secret, payment_intent_id
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}
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// Simulate API latency
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time.Sleep(15 * time.Millisecond)
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return pref, nil
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}
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func (g *StripeGateway) CreatePaymentIntent(ctx context.Context, order *domain.Order) (map[string]interface{}, error) {
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select {
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case <-ctx.Done():
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return nil, ctx.Err()
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default:
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}
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fee := int64(float64(order.TotalCents) * (g.MarketplaceCommission / 100))
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// Simulated Stripe PaymentIntent response
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return map[string]interface{}{
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"id": fmt.Sprintf("pi_%s", order.ID.String()[:8]),
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"client_secret": fmt.Sprintf("pi_%s_secret_%d", order.ID.String()[:8], time.Now().UnixNano()),
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"amount": order.TotalCents,
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"currency": "brl",
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"status": "requires_payment_method",
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"application_fee": fee,
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"transfer_data": map[string]interface{}{"destination": order.SellerID.String()},
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}, nil
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}
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