using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using SportsStore.Domain.Abstract;
using SportsStore.Domain.Entities;
using System.Net;
using System.Net.Mail;

namespace SportsStore.Domain.Concrete
{
    public class EmailSettings {
        public string MailToAddress = "order@example.com";
        public string MailFromAddress = "sportsstore@example.com";
        public bool UseSsl = true;
        public string Username = "MySmtpUsername";
        public string Password = "MySmtpPassword";
        public string ServerName = "smtp.example.com";
        public int ServerPort = 587;
        public bool WriteAsFile = false;
        public string FileLocation = @"c:\sports_store_emails";
    }
    
    public class EmailOrderProcessor : IOrderProcessor
    {
        private EmailSettings _emailSettings;

        public EmailOrderProcessor(EmailSettings settings) {
            _emailSettings = settings;
        }

        public void ProcessOrder(Cart cart, ShippingDetails shippingDetails)
        {
            using (var smtpClient = new SmtpClient())
            {
                smtpClient.EnableSsl = _emailSettings.UseSsl;
                smtpClient.Host = _emailSettings.ServerName;
                smtpClient.Port = _emailSettings.ServerPort;
                smtpClient.UseDefaultCredentials = false;
                smtpClient.Credentials = new NetworkCredential(_emailSettings.Username, _emailSettings.Password);
                if (_emailSettings.WriteAsFile)
                {
                    smtpClient.DeliveryMethod = SmtpDeliveryMethod.SpecifiedPickupDirectory;
                    smtpClient.PickupDirectoryLocation = _emailSettings.FileLocation;
                    smtpClient.EnableSsl = false;
                }
                StringBuilder body = new StringBuilder()
                .AppendLine("A new order has been submitted")
                .AppendLine("---")
                .AppendLine("Items:");

                foreach (var line in cart.Lines)
                {
                    var subtotal = line.Product.Price * line.Quantity;
                    body.AppendFormat("{0} x {1} (subtotal: {2:c}", line.Quantity,
                    line.Product.Name,
                    subtotal);
                }

                body.AppendFormat("Total order value: {0:c}", cart.ComputeTotalValue())
                .AppendLine("---")
                .AppendLine("Ship to:")
                .AppendLine(shippingDetails.Name)
                .AppendLine(shippingDetails.Line1)
                .AppendLine(shippingDetails.Line2 ?? "")
                .AppendLine(shippingDetails.Line3 ?? "")
                .AppendLine(shippingDetails.City)
                .AppendLine(shippingDetails.State ?? "")
                .AppendLine(shippingDetails.Country)
                .AppendLine(shippingDetails.Zip)
                .AppendLine("---")
                .AppendFormat("Gift wrap: {0}", shippingDetails.GiftWrap ? "Yes" : "No");
                MailMessage mailMessage = new MailMessage(
                _emailSettings.MailFromAddress, // From
                _emailSettings.MailToAddress, // To
                "New order submitted!", // Subject
                body.ToString()); // Body
                if (_emailSettings.WriteAsFile)
                {
                    mailMessage.BodyEncoding = Encoding.ASCII;
                }
                //smtpClient.Send(mailMessage);
            }
        }
    }
}
