using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;

namespace CorsService
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "MessageService" in code, svc and config file together.
    // NOTE: In order to launch WCF Test Client for testing this service, please select MessageService.svc or MessageService.svc.cs at the Solution Explorer and start debugging.
    public class MessageService : IMessageService
    {
        private static List<EmailMessage> _messages = new List<EmailMessage>();

        public void SendMessage(string sender, string recipient, string message)
        {
            EmailMessage msg = new EmailMessage(sender, recipient, message);
            _messages.Add(msg);
        }

        public string ReadLastMessage()
        {
            if (_messages.Count == 0)
                return "";

            return _messages[_messages.Count - 1].MessageText;
        }

        public string ReadMessage(int msgId)
        {
            try
            {
                EmailMessage msg = _messages[msgId];
                return msg.MessageText;
            }
            catch // (ArgumentOutOfRangeException e)
            {
                return "Bad Id";
            }
        }

        public EmailMessage ModifyMessage(int msgId, EmailMessage messageChanges)
        {
            try
            {
                EmailMessage msg = _messages[msgId];

                msg.Sender = messageChanges.Sender;
                msg.Recipient = messageChanges.Recipient;
                msg.MessageText = messageChanges.MessageText;

                return msg;
            }
            catch // (ArgumentOutOfRangeException e)
            {
                return new EmailMessage("Broken", "Broken", "Broken");
            }
        }

        public EmailMessage[] ReadAllMessages(string recipient, string keyWord)
        {
            return _messages.ToArray();
        }

        public void DeleteMessage(int msgId)
        {
            try
            {
                _messages.RemoveAt(msgId);
            }
            catch // (ArgumentOutOfRangeException e)
            {
            }
        }
    }
}