using Fitness_core_BE.Models;

namespace Fitness_core_BE.Interfaces
{
    public interface IInventoryRepository
    {
        // Products
        Task<List<Product>> GetProducts(Guid clientId, bool includeInactive = false);
        Task<Product?> GetProductById(Guid productId);
        Task<Product> CreateProduct(Product product);
        Task<Product> UpdateProduct(Product product);
        /// <summary>Next sequential number for this client, e.g. 3 -&gt; "PRD-0004" -- Sku is
        /// system-generated, never user-entered.</summary>
        Task<int> GetNextProductSequence(Guid clientId);

        // Product detail page: stock-movement history (GRN-in, Sale-out, Return-out).
        Task<List<GoodsReceivedNoteItem>> GetGrnItemsForProduct(Guid productId);
        Task<List<SaleItem>> GetSaleItemsForProduct(Guid productId);
        Task<List<StockReturn>> GetStockReturnsForProduct(Guid productId);

        // Suppliers
        Task<List<Supplier>> GetSuppliers(Guid clientId, bool includeInactive = false);
        Task<Supplier?> GetSupplierById(Guid supplierId);
        Task<Supplier> CreateSupplier(Supplier supplier);

        // GRN
        Task<GoodsReceivedNote> CreateGrn(GoodsReceivedNote grn);
        Task<List<GoodsReceivedNote>> GetGrns(Guid clientId);
        Task<GoodsReceivedNote?> GetGrnById(Guid grnId);
        /// <summary>Next sequential number for this client, e.g. 3 -&gt; "GRN-0004".</summary>
        Task<int> GetNextGrnSequence(Guid clientId);

        // Sales
        Task<Sale> CreateSale(Sale sale);
        Task<List<Sale>> GetSales(Guid clientId);
        Task<Sale?> GetSaleById(Guid saleId);
        Task<int> GetNextSaleSequence(Guid clientId);

        // Returns
        Task<StockReturn> CreateStockReturn(StockReturn stockReturn);
        Task<List<StockReturn>> GetStockReturns(Guid clientId);
        Task<StockReturn?> GetStockReturnById(Guid stockReturnId);
    }
}