using CounsellorBL.BLStructure;
using log4net;
using MonumentDefine;
using OT.COM.ArsenalDB;
using OT.COM.LogisticsUtil;
using SoldierData.EnterprizeV4;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Mail;
using System.Net.Mime;
using System.Text;

namespace CounsellorBL.Helper
{
    /// <summary>
    ///   類別名稱:Mailer
    ///   類別說明:
    ///   起始作者:
    ///   起始日期:
    ///   最新修改人:
    ///   最新修改日:
    /// </summary>
    public partial class MailHelper
    {
        /// <summary>
        /// 類別成員、類別屬性說明:_inst
        /// </summary>
        private ILog _inst = null;
        protected ILog Logger
        {
            get
            {
                if (_inst == null)
                {
                    _inst = LogManager.GetLogger(this.GetType());
                }
                return _inst;
            }
        }
        /// <summary>
        /// 類別成員、類別屬性說明:SMTP
        /// </summary>
        public string SMTP { get; set; }
        /// <summary>
        /// 類別成員、類別屬性說明:FromAddress
        /// </summary>
        public string FromAddress { get; set; }
        /// <summary>
        /// 類別成員、類別屬性說明:Account
        /// </summary>
        public string Account { get; set; }
        /// <summary>
        /// 類別成員、類別屬性說明:EnterCode
        /// </summary>
        public string EnterCode { get; set; }
        /// <summary>
        /// 類別成員、類別屬性說明:Name
        /// </summary>
        public string Name { get; set; }
        /// <summary>
        /// 類別成員、類別屬性說明:Port
        /// </summary>
        public int Port { get; set; }
        /// <summary>
        /// 類別成員、類別屬性說明:ErrorMessage
        /// </summary>
        public string ErrorMessage { get; set; }
        /// <summary>
        /// 類別成員、類別屬性說明:SSL
        /// </summary>
        public bool SSL { get; set; }

        public string UseDefaultCredentials { get; set; }
        /// <summary>
        /// 類別成員、類別屬性說明:MyEncoding
        /// </summary>
        public Encoding MyEncoding { get; set; }

        /// <summary>
        /// 類別成員、類別屬性說明:建構子
        /// </summary>
        public MailHelper()
        {
            MyEncoding = Encoding.GetEncoding("UTF-8");

            ConcurrentDictionary<string, string> dicSetting = CustomizeDBMgr.SettingData;
            string sUseSSL = dicSetting.ContainsKey("USESSL") ? dicSetting["USESSL"] : null;
            SMTP = dicSetting.ContainsKey("SMTPURL") ? dicSetting["SMTPURL"] : null;
            FromAddress = dicSetting.ContainsKey("MAILOWNERADDRESS") ? dicSetting["MAILOWNERADDRESS"] : null;
            Account = dicSetting.ContainsKey("MAILACCOUNT") ? dicSetting["MAILACCOUNT"] : null;
            EnterCode = dicSetting.ContainsKey("MAILPASS") ? dicSetting["MAILPASS"] : null;
            Name = dicSetting.ContainsKey("MAILACCOUNT") ? dicSetting["MAILACCOUNT"] : null;
            Port = dicSetting.ContainsKey("MAILPORT") ? Convert.ToInt32(dicSetting["MAILPORT"], CultureInfo.CurrentCulture) : 587;
            SSL = (sUseSSL?.ToLower(CultureInfo.CurrentCulture).StartsWith("y", StringComparison.OrdinalIgnoreCase)).Value;
            MyEncoding = Encoding.GetEncoding("UTF-8");
            UseDefaultCredentials = dicSetting.ContainsKey("USEDEFAULTCREDENTIALS") ? dicSetting["USEDEFAULTCREDENTIALS"] : null;
        }
        /// <summary>
        ///  函式名稱:Send
        ///  函式說明:寄信動作
        ///  起始作者:
        ///  起始日期:
        ///  最新修改人:
        ///  最新修改日:
        /// </summary>
        /// <param name="strSubject">主旨</param>
        /// <param name="strBody">信件內容</param>
        /// <param name="arrayStrToAddressAndName">收件者</param>
        /// <param name="bHTML"></param>
        /// <param name="arrayStrAttached">附件</param>
        /// <param name="arrayStrCCAddressAndName">CC</param>
        /// <param name="arrayStrBCCAddressAndName">BCC</param>                
        /// <returns></returns>    
        public string Send(string i_strSubject, string strBody, List<MailAccountInfo> arrayStrToAddressAndName,
            bool bHTML = true,
            List<MailAccountInfo> arrayStrCCAddressAndName = null,
            List<MailAccountInfo> arrayStrBCCAddressAndName = null,
            List<string> i_lAttachPaths = null,
            [System.Runtime.CompilerServices.CallerLineNumber] int i_nCodeLine = 0,
            [System.Runtime.CompilerServices.CallerMemberName] string i_sMemberName = "",
            [System.Runtime.CompilerServices.CallerFilePath] string i_sSourcePath = ""
)
        {
            string sMsg = null;
            string strSubject = i_strSubject;

            Logger.Debug(string.Format(CultureInfo.CurrentCulture, "MailHelper Send Start, Title{0}", strSubject));

            try
            {


                System.Net.Mail.MailMessage mm = new System.Net.Mail.MailMessage();
                if (!string.IsNullOrWhiteSpace(this.FromAddress))
                {
                    mm.Sender = new System.Net.Mail.MailAddress(string.Format(CultureInfo.CurrentCulture, "{1}<{0}>", this.FromAddress, this.Name));
                    mm.From = new System.Net.Mail.MailAddress(string.Format(CultureInfo.CurrentCulture, "{1}<{0}>", this.FromAddress, this.Name));
                }
                mm.Subject = strSubject;
                mm.IsBodyHtml = bHTML;
                mm.Body = strBody;
                mm.BodyEncoding = this.MyEncoding;

                //加入收件者
                if (arrayStrToAddressAndName != null)
                {
                    for (int i = 0; i < arrayStrToAddressAndName.Count; i++)
                    {
                        MailAccountInfo mai = arrayStrToAddressAndName[i];
                        if (!string.IsNullOrWhiteSpace(mai.EMail))
                        {
                            mm.To.Add(mai.EMail);
                        }
                    }
                }


                //加入CC
                if (arrayStrCCAddressAndName != null)
                {
                    for (int i = 0; i < arrayStrCCAddressAndName.Count; i++)
                    {
                        MailAccountInfo mai = arrayStrCCAddressAndName[i];
                        if (!string.IsNullOrWhiteSpace(mai.EMail))
                        {
                            mm.CC.Add(mai.EMail);
                        }
                    }
                }
                //加入BCC
                if (arrayStrBCCAddressAndName != null)
                {
                    for (int i = 0; i < arrayStrBCCAddressAndName.Count; i++)
                    {
                        MailAccountInfo mai = arrayStrBCCAddressAndName[i];
                        if (!string.IsNullOrWhiteSpace(mai.EMail))
                        {
                            mm.Bcc.Add(mai.EMail);
                        }
                    }
                }



                using System.Net.Mail.SmtpClient smtp = new System.Net.Mail.SmtpClient(this.SMTP, this.Port);
                if (!string.IsNullOrWhiteSpace(this.Account) && !string.IsNullOrWhiteSpace(this.EnterCode))
                {
                    smtp.Credentials = new NetworkCredential(this.Account, this.EnterCode);
                }

                smtp.EnableSsl = this.SSL;

                if (UseDefaultCredentials != null)
                {
                    switch (UseDefaultCredentials.ToLower(CultureInfo.CurrentCulture))
                    {
                        case "true":
                            smtp.UseDefaultCredentials = true;
                            break;
                        case "false":
                            smtp.UseDefaultCredentials = false;
                            break;
                        default:
                            break;
                    }
                }

                mm.Body = strBody;

                if (i_lAttachPaths != null && i_lAttachPaths.Any())
                {
                    foreach (string sPath in i_lAttachPaths)
                    {
                        if (File.Exists(sPath))
                        {
                            Attachment data = new Attachment(sPath, MediaTypeNames.Application.Octet);
                            // Add time stamp information for the file.
                            ContentDisposition disposition = data.ContentDisposition;
                            disposition.CreationDate = System.IO.File.GetCreationTime(sPath);
                            disposition.ModificationDate = System.IO.File.GetLastWriteTime(sPath);
                            disposition.ReadDate = System.IO.File.GetLastAccessTime(sPath);
                            // Add the file attachment to this e-mail message.
                            mm.Attachments.Add(data);
                        }
                    }
                }


                smtp.Send(mm);
                mm.Dispose();


                Logger.Debug("MailHelper Send End");
            }
            catch 
            {
                sMsg = $"{nameof(Send)} unknwon exception. Call from {i_sMemberName} {i_sSourcePath}({i_nCodeLine}).";
            }


            return sMsg;
        }


        public static string SendAdminMail(string i_sTitle, string i_sBody,
            [System.Runtime.CompilerServices.CallerLineNumber] int i_nCodeLine = 0,
            [System.Runtime.CompilerServices.CallerMemberName] string i_sMemberName = "",
            [System.Runtime.CompilerServices.CallerFilePath] string i_sSourcePath = ""
)
        {
            string sMsg;

            try
            {

                do
                {
                    sMsg = SystemSettingHelper.GetSetting(BLWording.SYSTEMSETTING_SYSTEMERRORMAIL, out tb_sys_system_setting sResult);

                    if (sMsg != null || sResult.key_value == null || sResult.key_value.Trim().Length == 0)
                    {
                        break;
                    }

                    string[] saMail = sResult.key_value.Split(";,".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);

                    List<MailAccountInfo> lmaReceiver = new List<MailAccountInfo>();

                    foreach (string sMail in saMail)
                    {
                        lmaReceiver.Add(new MailAccountInfo()
                        {
                            EMail = sMail,
                            Name = sMail.Substring(0, sMail.IndexOf("@", StringComparison.OrdinalIgnoreCase))
                        });
                    }

                    MailHelper mh = new MailHelper();

                    sMsg = mh.Send($"{i_sTitle}", i_sBody, lmaReceiver);


                    if (sMsg != null)
                    {
                        break;
                    }

                }
                while (false);
            }
            catch (Exception ex)
            {
                LogHelper.DBLog(Util.GetLastExceptionMsg(ex), i_nCodeLine, i_sMemberName, i_sSourcePath);
                sMsg = $"{nameof(SendAdminMail)} unknwon exception. Call from {i_sMemberName} {i_sSourcePath}({i_nCodeLine}).";
#if DEBUG
                System.Diagnostics.Debug.WriteLine(sMsg);
#endif 
            }
            return sMsg;
        }

    }
}