ICartService

// RB2 Core Connect

namespace CoreConnect.Commerce.Cart;

/// <summary>
/// The cart service Interface.
/// </summary>
public interface ICartService
{
    /// <summary>
    /// Gets the specified cart.
    /// </summary>
    /// <param name="request">The request.</param>
    /// <param name="context">The request context.</param>
    /// <param name="cancellationToken">A cancellation token which can be used to cancel the operation.</param>
    /// <returns>Commerce.Cart.Cart</returns>
    Task<CartResponse> GetCart(CartRequest request, IRequestContext context, CancellationToken cancellationToken = default);

    /// <summary>
    /// Creates the cart.
    /// </summary>
    /// <param name="request">The request.</param>
    /// <param name="context">The context.</param>
    /// <param name="cancellationToken">The cancellation token.</param>
    /// <returns>The cart</returns>
    Task<CartResponse> CreateCart(CreateCartRequest request, IRequestContext context, CancellationToken cancellationToken = default);

    /// <summary>
    /// Adds line items to the cart.
    /// </summary>
    /// <param name="request">The request.</param>
    /// <param name="context">The context.</param>
    /// <param name="cancellationToken">The cancellation token.</param>
    /// <returns>Commerce.Cart.Cart</returns>
    Task<CartResponse> AddCartLineItems(AddCartLineItemsRequest request, IRequestContext context, CancellationToken cancellationToken = default);

    /// <summary>
    /// Removes the cart line item.
    /// </summary>
    /// <param name="request">The request.</param>
    /// <param name="context">The context.</param>
    /// <param name="cancellationToken">The cancellation token.</param>
    /// <returns>Commerce.Cart.Cart</returns>
    Task<CartResponse> RemoveCartLineItem(RemoveCartLineItemRequest request, IRequestContext context, CancellationToken cancellationToken);

    /// <summary>
    /// Updates the cart line item.
    /// </summary>
    /// <param name="request">The request.</param>
    /// <param name="context">The context.</param>
    /// <param name="cancellationToken">The cancellation token.</param>
    /// <returns>Commerce.Cart.Cart</returns>
    Task<CartResponse> UpdateCartLineItem(UpdateCartLineItemRequest request, IRequestContext context, CancellationToken cancellationToken);

    /// <summary>
    /// Updates cart.
    /// </summary>
    /// <param name="request"></param>
    /// <param name="context"></param>
    /// <param name="cancellationToken"></param>
    /// <returns></returns>
    Task<CartResponse> CartUpdate(CartUpdateRequest request, IRequestContext context, CancellationToken cancellationToken);

    /// <summary>
    /// MergeCarts
    /// </summary>
    /// <param name="sourceCartId"></param>
    /// <param name="destinationCartId"></param>
    /// <param name="useNewCart"></param>
    /// <param name="cancellationToken"></param>
    /// <returns></returns>
    Task<string> MergeCarts(string sourceCartId, string destinationCartId, bool useNewCart, CancellationToken cancellationToken);

    /// <summary>
    /// Removes multiples line items from a cart.
    /// </summary>
    /// <param name="request">The request.</param>
    /// <param name="context">The context.</param>
    /// <param name="cancellationToken">The cancellation token.</param>
    Task<CartResponse> RemoveCartLineItems(RemoveCartLineItemsRequest request, IRequestContext context, CancellationToken cancellationToken);

    /// <summary>
    /// Removes all cart items.
    /// </summary>
    /// <param name="request">The request.</param>
    /// <param name="context">The context.</param>
    /// <param name="cancellationToken">The cancellation token.</param>
    /// <returns></returns>
    Task<CartResponse> ClearCart(ClearCartRequest request, IRequestContext context, CancellationToken cancellationToken);

    /// <summary>
    /// Gets the shipping methods.
    /// </summary>
    /// <param name="request">The cart identifier.</param>
    /// <param name="context">The context.</param>
    /// <param name="cancellationToken"></param>
    /// <returns></returns>
    Task<IEnumerable<ShippingMethodResponse>> GetShippingMethods(ShippingMethodRequest request, IRequestContext context, CancellationToken cancellationToken = default);

    /// <summary>
    /// Replaces a cart line item with the provided new cart item.
    /// </summary>
    /// <param name="request"></param>
    /// <param name="context"></param>
    /// <param name="cancellationToken"></param>
    /// <returns></returns>
    Task<CartResponse> ReplaceCartLineItem(ReplaceCartLineItemRequest request, IRequestContext context, CancellationToken cancellationToken = default);

    /// <summary>
    /// Apply discount codes to cart
    /// </summary>
    /// <param name="request"></param>
    /// <param name="context"></param>
    /// <param name="cancellationToken"></param>
    /// <returns></returns>
    Task<CartResponse> ApplyDiscountCode(CartApplyDiscountCodeRequest request, IRequestContext context, CancellationToken cancellationToken);

    /// <summary>
    /// Remove a DiscountCode from the Cart.
    /// </summary>
    /// <param name="request"></param>
    /// <param name="context"></param>
    /// <param name="cancellationToken"></param>
    /// <returns></returns>
    Task<CartResponse> RemoveDiscountCode(CartRemoveDiscountCodeRequest request, IRequestContext context, CancellationToken cancellationToken);

    /// <summary>
    ///  Gets a discount code by id
    /// </summary>
    /// <param name="request"></param>
    /// <param name="cancellationToken"></param>
    /// <returns></returns>
    Task<string> GetDiscountById(CartGetDiscountByIdRequest request, CancellationToken cancellationToken);

    /// <summary>
    /// Replaces the cart custom line item.
    /// </summary>
    /// <param name="request">The request.</param>
    /// <param name="context">The context.</param>
    /// <param name="cancellationToken">The cancellation token.</param>
    /// <returns></returns>
    Task<CartResponse> ReplaceCartCustomLineItem(ReplaceCartCustomLineItemRequest request, IRequestContext context, CancellationToken cancellationToken);
}