using Fitness_core_BE.DTOs.PlatformBilling;
using Fitness_core_BE.Models;

namespace Fitness_core_BE.Interfaces.Services
{
    // Computes and generates the platform's own bill to a gym ("Client"): a per-active-member
    // SaaS fee (with minimum/cap), device rental, and one-time setup fees. Distinct from
    // CustomerInvoice/CustomerSubscription, which is the gym billing its own members.
    public interface IPlatformBillingService
    {
        Task<List<PricingPlanDto>> GetPricingPlansAsync(CancellationToken ct = default);
        Task<PricingPlanDto> UpsertPricingPlanAsync(UpsertPricingPlanRequest request, CancellationToken ct = default);
        Task<DevicePricingDto> GetDevicePricingAsync(CancellationToken ct = default);
        Task<DevicePricingDto> UpdateDevicePricingAsync(DevicePricingDto request, CancellationToken ct = default);
        Task<Models.ClientInvoice> AssignPricingPlanAsync(Guid clientId, AssignPricingPlanRequest request, CancellationToken ct = default);

        Task<PlatformFeeBreakdownDto> ComputeMonthlyFeeAsync(Guid clientId, CancellationToken ct = default);
        Task<Models.ClientInvoice> GenerateMonthlyInvoiceAsync(Guid clientId, CancellationToken ct = default);
        Task<Models.ClientInvoice> GenerateOnboardingInvoiceAsync(Guid clientId, CancellationToken ct = default);
        Task<List<Models.ClientInvoice>> RunMonthlyBillingForAllClientsAsync(CancellationToken ct = default);
        Task<SubscriptionChargeRunResult> RunAndChargeSubscriptionBillingAsync(CancellationToken ct = default);

        Task<List<PendingPlatformInvoiceDto>> GetPendingInvoicesAsync(CancellationToken ct = default);
        Task<List<PendingPlatformInvoiceDto>> GetCompletedInvoicesAsync(CancellationToken ct = default);
        Task<PendingPlatformInvoiceDto> RecordClientInvoicePaymentAsync(Guid clientInvoiceId, decimal amount, CancellationToken ct = default);
        Task<object> SendClientPaymentLinkAsync(Guid clientInvoiceId, CancellationToken ct = default);
    }
}