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Interfaces/Services/IPaymentService.cs

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+using Microsoft.AspNetCore.Http;
+
+namespace Fitness_core_BE.Interfaces.Services
+{
+    public interface IPaymentService
+    {
+        Task<object> CreateCustomerPayment(object payload, HttpContext httpContext);
+        Task<object> CreateClientPayment(object payload, HttpContext httpContext);
+        Task<object> GetPaymentById(object payload, HttpContext httpContext);
+        Task<object> GetPaymentsByCustomerInvoice(object payload, HttpContext httpContext);
+        Task<object> GetPaymentsByClientInvoice(object payload, HttpContext httpContext);
+        Task<object> ApprovePayment(object payload, HttpContext httpContext);
+        Task<object> RecordSubscriptionPayment(object payload, HttpContext httpContext);
+        Task<object> GetSubscriptionPayments(object payload, HttpContext httpContext);
+
+        // "Charge now": owner-triggered attempt against the member's consented auto-charge card.
+        Task<object> AttemptAutoCharge(Guid customerInvoiceId, HttpContext httpContext);
+        // Emails/texts the member a link to pay the invoice online themselves.
+        Task<object> SendPaymentLink(Guid customerInvoiceId, HttpContext httpContext);
+        // Public pay-by-link surface (token proves authorization; no logged-in session).
+        Task<object> GetInvoiceByPaymentToken(string token);
+        Task<object> ChargeInvoiceByPaymentToken(string token, object payload);
+    }
+}