using DSWeb.Common.DB;
using log4net;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;

namespace DSWeb.Common.Helper
{
    /// <summary>
    /// 发送邮件辅助类
    /// </summary>
    public static class MailHelper
    {
        private static ILog logger = LogManager.GetLogger("MailHelper");

        /// <summary>
        /// 使用随机邮箱发送邮件
        /// </summary>
        /// <param name="title">邮件标题</param>
        /// <param name="body">邮件内容</param>
        /// <param name="sendTo">接收人（多个接收人用英文逗号或分号隔开）</param>
        public static bool SendMail(string title, string body, string sendTo)
        {
            bool succ = false;
            CommonDataContext commonDataContext = new CommonDataContext();

            var smtpList = commonDataContext.MailSendSmtp.AsNoTracking().ToList();
            MailSendSmtp smtp = null;
            if (smtpList.Count > 0)
            {
                Random rnd = new Random();
                int idx = rnd.Next(smtpList.Count);
                smtp = smtpList[idx];
            }

            MailSend mailSend = new MailSend();
            mailSend.SendTo = sendTo;
            mailSend.Title = title;
            mailSend.Body = body;
            if (smtp != null)
            {
                mailSend.SendStatus = MailSend.MailSendStatusCreate;
                mailSend.SmtpConfig = smtp.GID;
                succ = true;
            }
            else
            {
                mailSend.SendStatus = MailSend.MailSendStatusFail;
                logger.Error("没有配置发送邮箱，邮件将不会发送");
            }
            commonDataContext.MailSend.Add(mailSend);
            commonDataContext.SaveChanges();

            return succ;
        }

        /// <summary>
        /// 使用指定的邮箱发送邮件
        /// </summary>
        /// <param name="configId">指定smtp配置的id</param>
        /// <param name="title">邮件标题</param>
        /// <param name="body">邮件内容</param>
        /// <param name="sendTo">接收人（多个接收人用英文逗号或分号隔开）</param>
        /// <param name="showName">显示名称</param>
        /// <param name="sender">自定义发件人（只有小部分邮箱支持）</param>
        public static bool SendMail(string configId, string title, string body, string sendTo, string ccTo = null, string showName = null, string sender = null, bool customerSend = false, params AttachFileModel[] attachFiles)
        {
            bool succ = false;
            CommonDataContext commonDataContext = new CommonDataContext();
            MailDataContext mailData = new MailDataContext();

            MailSend mailSend = new MailSend();
            mailSend.SendTo = sendTo;
            mailSend.CCTo = ccTo;
            mailSend.Title = title;
            mailSend.Body = body;
            mailSend.ShowName = showName;
            mailSend.Sender = sender;
            if (attachFiles != null && attachFiles.Length > 0)
            {
                mailSend.AttachFiles = JsonConvert.SerializeObject(attachFiles);
            }

            //使用大简云配置的smtp发邮件
            if (!customerSend)
            {
                var smtp = commonDataContext.MailSendSmtp.AsNoTracking().FirstOrDefault(c => c.GID == configId);
                if (smtp != null)
                {
                    mailSend.SendStatus = MailSend.MailSendStatusCreate;
                    mailSend.SmtpConfig = smtp.GID;
                    succ = true;
                }
                else
                {
                    mailSend.SendStatus = MailSend.MailSendStatusFail;
                    logger.Error("没有配置发送邮箱，邮件将不会发送");
                    succ = false;
                }
            }
            else //使用客户的邮箱发邮件
            {
                mailSend.CustomerSend = true;
                var userMail = mailData.UserAccounts.AsNoTracking().FirstOrDefault(ua => ua.GID == configId);
                if (userMail != null)
                {
                    mailSend.SendStatus = MailSend.MailSendStatusCreate;
                    mailSend.SmtpConfig = userMail.GID;
                    succ = true;
                }
                else
                {
                    mailSend.SendStatus = MailSend.MailSendStatusFail;
                    logger.Error("未找到邮箱账号配置，邮件将不会发送");
                    succ = false;
                }
            }

            commonDataContext.MailSend.Add(mailSend);
            commonDataContext.SaveChanges();

            return succ;
        }

        /// <summary>
        /// 使用默认发件地址发送邮件
        /// </summary>
        /// <param name="title">邮件标题</param>
        /// <param name="body">邮件内容</param>
        /// <param name="sendTo">接收人（多个接收人用英文逗号或分号隔开）</param>
        /// <returns></returns>
        public static bool SendMailCommon(string title, string body, string sendTo, params AttachFileModel[] attachFiles)
        {
            return SendMail("4AB9E4EE-7E62-4E95-9168-F7CF0605E088", title, body, sendTo, attachFiles: attachFiles);
        }

        /// <summary>
        /// 使用马士基发件地址发送邮件
        /// </summary>
        /// <param name="title">邮件标题</param>
        /// <param name="body">邮件内容</param>
        /// <param name="sendTo">接收人（多个接收人用英文逗号或分号隔开）</param>
        /// <returns></returns>
        public static bool SendMailMaersk(string title, string body, string sendTo, params AttachFileModel[] attachFiles)
        {
            return SendMail("37F7BF61-41F1-4B77-A1B8-41BAFEDF5AF1", title, body, sendTo, attachFiles: attachFiles);
        }

        /// <summary>
        /// 使用发票转发发件地址发送邮件
        /// </summary>
        /// <param name="title">邮件标题</param>
        /// <param name="body">邮件内容</param>
        /// <param name="sendTo">接收人（多个接收人用英文逗号或分号隔开）</param>
        /// <returns></returns>
        public static bool SendMailInvoice(string title, string body, string sendTo, params AttachFileModel[] attachFiles)
        {
            return SendMail("4E07BC66-0E0A-4A97-A3B5-EC6516FAE24A", title, body, sendTo, showName: "大简云发票平台", attachFiles: attachFiles);
        }

        /// <summary>
        /// 使用余额不足通知发件地址发送邮件
        /// </summary>
        /// <param name="title">邮件标题</param>
        /// <param name="body">邮件内容</param>
        /// <param name="sendTo">接收人（多个接收人用英文逗号或分号隔开）</param>
        /// <returns></returns>
        public static bool SendMailService(string title, string body, string sendTo, params AttachFileModel[] attachFiles)
        {
            return SendMail("0D6D86A5-B341-4317-94D7-435C868F780C", title, body, sendTo, attachFiles: attachFiles);
        }

        /// <summary>
        /// 发送发票邮件
        /// </summary>
        /// <param name="invId">发票记录Id</param>
        /// <returns></returns>
        public static bool SendMailInvoiceRecord(string invId)
        {
            return SendMailInvoiceRecordOther(invId, null);
        }
        /// <summary>
        /// 发送发票邮件
        /// </summary>
        /// <param name="invId">发票记录Id</param>
        /// <param name="email">优先使用参数的邮箱，若参数未null时使用发票记录的邮箱</param>
        /// <param name="cfgUserId">读取发件标题配置所属的用户，默认使用发票所有人的配置数据</param>
        /// <returns></returns>
        public static bool SendMailInvoiceRecordOther(string invId, string email, string cfgUserId = null)
        {
            InvoiceDbContext invDB = new InvoiceDbContext();
            CommonDataContext comDB = new CommonDataContext();
            var inv = invDB.Invoices.AsNoTracking().FirstOrDefault(i => i.GID == invId);
            if (inv != null && inv.Status == InvoiceRecord.StatusIssued && (!string.IsNullOrEmpty(email) || !string.IsNullOrEmpty(inv.Email)))
            {
                var cfgUid = string.IsNullOrEmpty(cfgUserId) ? inv.UserId : cfgUserId;
                var cfg = comDB.ConfigDatas.AsNoTracking().FirstOrDefault(cd => cd.Module == ConfigData.ModuleInvoice && cd.Category == ConfigData.CateMailSubject && cd.UserId == cfgUid);
                var title = "";
                if (cfg != null)
                {
                    var subjectArr = JsonConvert.DeserializeObject<string[]>(cfg.JsonData);
                    #region 标题拼接
                    string mailTitle = string.Empty;

                    if (subjectArr.Contains("SalerName"))
                    {
                        mailTitle += "销售方：" + inv.SalerName;
                    }

                    if (subjectArr.Contains("Total"))
                    {
                        if (mailTitle.Length > 0)
                        {
                            mailTitle += "---";
                        }
                        mailTitle += "金额：" + inv.Total;
                    }

                    if (subjectArr.Contains("InvoiceDate"))
                    {
                        if (mailTitle.Length > 0)
                        {
                            mailTitle += "---";
                        }
                        mailTitle += "开票日期：" + inv.InvoiceDate.Value.ToString("yyyy年MM月dd日");
                    }

                    if (subjectArr.Contains("InvNum"))
                    {
                        if (mailTitle.Length > 0)
                        {
                            mailTitle += "---";
                        }
                        mailTitle += "发票号码：" + inv.InvNum;
                    }

                    if (subjectArr.Contains("InvoiceLine"))
                    {
                        if (mailTitle.Length > 0)
                        {
                            mailTitle += "---";
                        }

                        switch (inv.InvoiceLine)
                        {
                            case "p":
                                mailTitle += "发票种类：普通发票(电票)";
                                break;
                            case "c":
                                mailTitle += "发票种类：普通发票(纸票)";
                                break;
                            case "s":
                                mailTitle += "发票种类：专用发票";
                                break;
                            case "e":
                                mailTitle += "发票种类：收购发票(电票)";
                                break;
                            case "f":
                                mailTitle += "发票种类：收购发票(纸质)";
                                break;
                        }

                    }

                    if (subjectArr.Contains("Clerk"))
                    {
                        if (mailTitle.Length > 0)
                        {
                            mailTitle += "---";
                        }
                        mailTitle += "开票人：" + inv.Clerk;
                    }

                    if (subjectArr.Contains("BuyerName"))
                    {
                        if (mailTitle.Length > 0)
                        {
                            mailTitle += "---";
                        }
                        mailTitle += "购货方名称：" + inv.BuyerName;
                    }

                    if (subjectArr.Contains("MBLNO"))
                    {
                        if (mailTitle.Length > 0)
                        {
                            mailTitle += "---";
                        }
                        mailTitle += "提单号：" + inv.MBLNO;
                    }
                    #endregion

                    title = $"您收到一张电子发票：{mailTitle}";
                }
                else
                {
                    title = $"您收到一张电子发票：销售方：{inv.SalerName}---金额：{inv.Total}---开票日期：{inv.InvoiceDate.Value.ToString("yyyy年MM月dd日")}";
                }

                //读取html模板，填充数据
                var htmlFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Areas/Invoice/Content/InvoiceMailTemplate.html");
                var content = File.ReadAllText(htmlFile);
                content = content.Replace("$VIEW_URL$", inv.PictureUrl);
                content = content.Replace("$CUST_NAME$", inv.BuyerName);
                content = content.Replace("$INV_DATA$", inv.InvoiceDate.Value.ToString("yyyy年MM月dd日"));
                content = content.Replace("$TOTAL$", inv.Total.ToString());
                content = content.Replace("$INV_NUM$", inv.InvNum);
                content = content.Replace("$INV_CODE$", inv.InvCode);
                content = content.Replace("$PDF_URL$", inv.PdfUrl);

                var att = new AttachFileModel()
                {
                    FileName = $"{invId}.pdf",
                    FilePath = inv.PdfUrl
                };

                SendMailInvoice(title, content, string.IsNullOrEmpty(email) ? inv.Email : email, attachFiles: att);
                return true;
            }

            return false;
        }

        /// <summary>
        /// 发送邮件-运踪
        /// </summary>
        /// <param name="title">邮件标题</param>
        /// <param name="body">邮件内容</param>
        /// <param name="sendTo">接收人（多个接收人用英文逗号或分号隔开）</param>
        /// <param name="showName">发件人显示名称</param>
        /// <param name="sender">发件人显示邮箱地址（部分邮箱支持）</param>
        /// <returns></returns>
        public static bool SendMailBillTrace(string title, string body, string sendTo, string showName = null, string sender = null, params AttachFileModel[] attachFiles)
        {
            return SendMail("F48AA7593827456BB0DC12D4D8D13976", title, body, sendTo, showName, sender, attachFiles: attachFiles);
        }

        /// <summary>
        /// 转发邮件
        /// </summary>
        /// <returns></returns>
        public static bool TransmitMail(string configId, string sendTo, string emlFile, string dbConn = "DongShengDB")
        {
            CommonDataContext commonDataContext = new CommonDataContext(dbConn);
            MailSend mailSend = new MailSend();
            mailSend.SendTo = sendTo;
            mailSend.Title = string.Empty;
            mailSend.Body = string.Empty;
            mailSend.CustomerSend = true;
            mailSend.SendStatus = MailSend.MailSendStatusCreate;
            mailSend.SmtpConfig = configId;
            mailSend.EmlFile = emlFile;
            mailSend.IsTransmit = true;
            commonDataContext.MailSend.Add(mailSend);
            commonDataContext.SaveChanges();
            return true;
        }



        /// <summary>
        /// 使用noreplay发件地址发送邮件
        /// </summary>
        /// <param name="title">邮件标题</param>
        /// <param name="body">邮件内容</param>
        /// <param name="sendTo">接收人（多个接收人用英文逗号或分号隔开）</param>
        /// <returns></returns>
        public static bool SendMailNoReplay(string title, string body, string sendTo, params AttachFileModel[] attachFiles)
        {
            return SendMail("CAF0C46C-D85F-45E6-8383-25889818F2FC", title, body, sendTo, attachFiles: attachFiles);
        }

        //public static bool SendMailUseTemplate()
        //{
        //    var template = commonData.MailSendTemplates.AsNoTracking().First(t => t.GID == "3CF45513-F996-4FBF-9A57-6E7851E389D8");
        //    Dictionary<string, string> dict = new Dictionary<string, string>();
        //    var propList = order.GetType().GetProperties();
        //    foreach (var prop in propList)
        //    {
        //        var valObj = prop.GetValue(order);
        //        if (valObj == null)
        //        {
        //            dict.Add($"ORDER.{prop.Name.ToUpper()}", string.Empty);
        //        }
        //        else
        //        {
        //            dict.Add($"ORDER.{prop.Name.ToUpper()}", valObj.ToString());
        //        }
        //    }

        //    var strRegex = "\\{\\{[A-Za-z0-9.]+\\}\\}";

        //    var title = template.Title;
        //    var mch = Regex.Match(title, strRegex);
        //    while (mch.Success)
        //    {
        //        var key = mch.Value.Replace("{{", "").Replace("}}", "").Trim().ToUpper();
        //        title = title.Replace(mch.Value, dict[key]);

        //        mch = Regex.Match(title, strRegex);
        //    }

        //    var body = template.Body;
        //    mch = Regex.Match(body, strRegex);
        //    while (mch.Success)
        //    {
        //        var key = mch.Value.Replace("{{", "").Replace("}}", "").Trim().ToUpper();
        //        body = body.Replace(mch.Value.ToUpper(), dict[key]);

        //        mch = Regex.Match(title, strRegex);
        //    }
        //}
    }

    public class AttachFileModel
    {
        /// <summary>
        /// 文件显示名称
        /// </summary>
        public string FileName { get; set; }

        /// <summary>
        /// 文件存放完整路径
        /// </summary>
        public string FilePath { get; set; }
    }
}