using Grand.Domain;
using Grand.Domain.Common;
using Grand.Domain.Customers;
using Grand.Domain.Orders;
using Grand.Domain.Stores;
using System.Linq.Expressions;

namespace Grand.Business.Core.Interfaces.Customers
{
    /// <summary>
    /// Customer service interface
    /// </summary>
    public interface ICustomerService
    {
        #region Customers

        /// <summary>
        /// Gets all customers
        /// </summary>
        /// <param name="createdFromUtc">Created date from (UTC); null to load all records</param>
        /// <param name="createdToUtc">Created date to (UTC); null to load all records</param>
        /// <param name="affiliateId">Affiliate identifier</param>
        /// <param name="vendorId">Vendor identifier</param>
        /// <param name="storeId">Store identifier</param>
        /// <param name="ownerId">Owner identifier</param>
        /// <param name="salesEmployeeId">Sales employee identifier</param>
        /// <param name="customerGroupIds">A list of customer group identifiers to filter by (at least one match); pass null or empty list in order to load all customers; </param>
        /// <param name="customerTagIds"></param>
        /// <param name="email">Email; null to load all customers</param>
        /// <param name="username">Username; null to load all customers</param>
        /// <param name="firstName">First name; null to load all customers</param>
        /// <param name="lastName">Last name; null to load all customers</param>
        /// <param name="company">Company; null to load all customers</param>
        /// <param name="phone">Phone; null to load all customers</param>
        /// <param name="zipPostalCode">Phone; null to load all customers</param>
        /// <param name="loadOnlyWithShoppingCart">Value indicating whether to load customers only with shopping cart</param>
        /// <param name="sct">Value indicating what shopping cart type to filter; user when 'loadOnlyWithShoppingCart' param is 'true'</param>
        /// <param name="pageIndex">Page index</param>
        /// <param name="pageSize">Page size</param>
        /// <param name="orderBySelector"></param>
        /// <returns>Customers</returns>
        Task<IPagedList<Customer>> GetAllCustomers(DateTime? createdFromUtc = null,
            DateTime? createdToUtc = null, string affiliateId = "", string vendorId = "", string storeId = "", string ownerId = "",
            string salesEmployeeId = "", string[] customerGroupIds = null, string[] customerTagIds = null, string email = null, string username = null,
            string firstName = null, string lastName = null,
            string company = null, string phone = null, string zipPostalCode = null,
            bool loadOnlyWithShoppingCart = false, ShoppingCartType? sct = null,
            int pageIndex = 0, int pageSize = int.MaxValue, Expression<Func<Customer, object>> orderBySelector = null);

        
        /// <summary>
        /// Gets online customers
        /// </summary>
        /// <param name="lastActivityFromUtc">Customer last activity date (from)</param>
        /// <param name="customerGroupIds">A list of customer group identifiers to filter by (at least one match); pass null or empty list in order to load all customers; </param>
        /// <param name="storeId">Store ident</param>
        /// <param name="salesEmployeeId">Sales employee ident</param>
        /// <param name="pageIndex">Page index</param>
        /// <param name="pageSize">Page size</param>
        /// <returns>Customers</returns>
        Task<IPagedList<Customer>> GetOnlineCustomers(DateTime lastActivityFromUtc,
            string[] customerGroupIds, string storeId = "", string salesEmployeeId = "", int pageIndex = 0, int pageSize = int.MaxValue);

        /// <summary>
        /// Gets count online customers
        /// </summary>
        /// <param name="lastActivityFromUtc">Customer last activity date (from)</param>
        /// <param name="storeId">Store ident</param>
        /// <param name="salesEmployeeId">Sales employee ident</param>
        /// <returns>Int</returns>
        Task<int> GetCountOnlineShoppingCart(DateTime lastActivityFromUtc, string storeId = "", string salesEmployeeId = "");

        /// <summary>
        /// Gets a customer
        /// </summary>
        /// <param name="customerId">Customer identifier</param>
        /// <returns>A customer</returns>
        Task<Customer> GetCustomerById(string customerId);

        /// <summary>
        /// Get customers by identifiers
        /// </summary>
        /// <param name="customerIds">Customer identifiers</param>
        /// <returns>Customers</returns>
        Task<IList<Customer>> GetCustomersByIds(string[] customerIds);

        /// <summary>
        /// Gets a customer by GUID
        /// </summary>
        /// <param name="customerGuid">Customer GUID</param>
        /// <returns>A customer</returns>
        Task<Customer> GetCustomerByGuid(Guid customerGuid);

        /// <summary>
        /// Get customer by email
        /// </summary>
        /// <param name="email">Email</param>
        /// <returns>Customer</returns>
        Task<Customer> GetCustomerByEmail(string email);

        /// <summary>
        /// Get customer by system group
        /// </summary>
        /// <param name="systemName">System name</param>
        /// <returns>Customer</returns>
        Task<Customer> GetCustomerBySystemName(string systemName);

        /// <summary>
        /// Get customer by username
        /// </summary>
        /// <param name="username">Username</param>
        /// <returns>Customer</returns>
        Task<Customer> GetCustomerByUsername(string username);

        /// <summary>
        /// Insert a guest customer
        /// </summary>
        /// <returns>Customer</returns>
        Task<Customer> InsertGuestCustomer(Store store);

        /// <summary>
        /// Insert a customer
        /// </summary>
        /// <param name="customer">Customer</param>
        Task InsertCustomer(Customer customer);

        /// <summary>
        /// Updates the customer
        /// </summary>
        /// <param name="customer">Customer</param>
        Task UpdateCustomer(Customer customer);

        /// <summary>
        /// Delete a customer
        /// </summary>
        /// <param name="customer">Customer</param>
        /// <param name="hard">Hard delete from database</param>
        Task DeleteCustomer(Customer customer, bool hard = false);

        /// <summary>
        /// Updates the customer field
        /// </summary>
        /// <param name="customer">Customer</param>
        /// <param name="expression"></param>
        /// <param name="value"></param>
        Task UpdateCustomerField<T>(Customer customer,
            Expression<Func<Customer, T>> expression, T value);

        /// <summary>
        /// Updates the customer field
        /// </summary>
        /// <param name="customerId">Customer ident</param>
        /// <param name="expression"></param>
        /// <param name="value"></param>
        Task UpdateCustomerField<T>(string customerId,
            Expression<Func<Customer, T>> expression, T value);
      
        /// <summary>
        /// Updates the customer
        /// </summary>
        /// <param name="customer">Customer</param>
        Task UpdateActive(Customer customer);

        /// <summary>
        /// Update the customer
        /// </summary>
        /// <param name="customer"></param>
        Task UpdateContributions(Customer customer);

        /// <summary>
        /// Updates the customer
        /// </summary>
        /// <param name="customer">Customer</param>
        Task UpdateCustomerLastLoginDate(Customer customer);
        
        /// <summary>
        /// Updates the customer in admin panel
        /// </summary>
        /// <param name="customer">Customer</param>
        Task UpdateCustomerInAdminPanel(Customer customer);

        /// <summary>
        /// Reset data required for checkout
        /// </summary>
        /// <param name="customer">Customer</param>
        /// <param name="storeId">Store identifier</param>
        /// <param name="clearCouponCodes">A value indicating whether to clear coupon code</param>
        /// <param name="clearCheckoutAttributes">A value indicating whether to clear selected checkout attributes</param>
        /// <param name="clearLoyaltyPoints">A value indicating whether to clear "Use loyalty points" flag</param>
        /// <param name="clearShipping">A value indicating whether to clear selected shipping method</param>
        /// <param name="clearPayment">A value indicating whether to clear selected payment method</param>
        Task ResetCheckoutData(Customer customer, string storeId,
            bool clearCouponCodes = false, bool clearCheckoutAttributes = false,
            bool clearLoyaltyPoints = true, bool clearShipping = true, bool clearPayment = true);

        /// <summary>
        /// Delete guest customer records
        /// </summary>
        /// <param name="createdFromUtc">Created date from (UTC); null to load all records</param>
        /// <param name="createdToUtc">Created date to (UTC); null to load all records</param>
        /// <param name="onlyWithoutShoppingCart">A value indicating whether to delete customers only without shopping cart</param>
        /// <returns>Number of deleted customers</returns>
        Task<int> DeleteGuestCustomers(DateTime? createdFromUtc, DateTime? createdToUtc, bool onlyWithoutShoppingCart);

        #endregion

        #region Customer Group in Customer

        Task InsertCustomerGroupInCustomer(CustomerGroup customerGroup, string customerId);

        Task DeleteCustomerGroupInCustomer(CustomerGroup customerGroup, string customerId);

        #endregion

        #region Customer address

        Task DeleteAddress(Address address, string customerId);
        Task InsertAddress(Address address, string customerId);
        Task UpdateAddress(Address address, string customerId);
        Task UpdateBillingAddress(Address address, string customerId);
        Task UpdateShippingAddress(Address address, string customerId);

        #endregion

        #region Shopping cart 

        Task ClearShoppingCartItem(string customerId, IList<ShoppingCartItem> cart);
        Task DeleteShoppingCartItem(string customerId, ShoppingCartItem shoppingCartItem);
        Task InsertShoppingCartItem(string customerId, ShoppingCartItem shoppingCartItem);
        Task UpdateShoppingCartItem(string customerId, ShoppingCartItem shoppingCartItem);
        #endregion

    }
}