using BuddyFinance.Integration.Logging;
using BuddyFinance.Integration.Models.Enums;
using BuddyFinance.Integration.Notifications;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Mail;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;

namespace BuddyFinance.Integration
{
    public class NotificationsIntegrator
    {
        // private readonly Logger _logger = new Logger();

        public bool SendOtp(string otp, string number)
        {
            var body = $"You are about to create a profile on Buddy Finance. Use OTP: {otp}";

            return SendSMS(number, body);
        }

        public bool SendSMS(string to, string body, int? initiativeid = null)
        {
            // send SMS
            var sent = false;

            #region Variables
            string userId = ConfigurationManager.AppSettings["SMSPortalUserID"];
            string pwd = ConfigurationManager.AppSettings["SMSPortalPassword"];
            string postURL = ConfigurationManager.AppSettings["SMSPortalPostURL"];

            StringBuilder postData = new StringBuilder();
            string message = string.Empty;
            HttpWebRequest request = null;
            #endregion

            try
            {
                to = string.Join(",", to.Split('/').ToArray());

                // Prepare POST data  
                postData.Append("type=sendparam");
                postData.Append("&username=" + userId);
                postData.Append("&password=" + pwd);
                postData.Append("&numto=" + to);
                postData.Append("&data1=" + body);

                byte[] data = new System.Text.ASCIIEncoding().GetBytes(postData.ToString());

                request = (HttpWebRequest)WebRequest.Create(postURL);
                request.Method = "POST";
                request.ContentType = "application/x-www-form-urlencoded";
                request.ContentLength = data.Length;

                // Write data to stream 
                using (Stream str = request.GetRequestStream())
                {
                    str.Write(data, 0, data.Length);
                }

                using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
                {
                    using (StreamReader reader = new StreamReader(response.GetResponseStream()))
                    {
                        message = reader.ReadToEnd();

                        XDocument xdoc = XDocument.Parse(message);

                        var success = xdoc.Root.Element("call_result").Element("result").Value == "True";
                        var reason = xdoc.Root.Element("call_result").Element("error").Value;

                        if (success)
                        {
                            sent = true;
                            // Log(LogTypeEnum type, string logDescription, int userId, string ipaddress, string userAgent)
                            Logger.Log(LogTypeEnum.Information, "Successfully sent SMS to " + to,
                                0, "", "");

                        }
                        else
                        {
                            //LogError((LogTypeEnum type ,string description,int userid, string ipaddress,
                            //string useragent))
                            Logger.Log(LogTypeEnum.Error, "Failed to send an SMS to " + to + ". Reason: " + reason, 0, "", "");
                            // "","");
                        }
                    }
                }

            }
            catch (Exception ex)
            {
                Logger.LogError(ex, 0, "", "");
            }

            return sent;
        }

        public bool SendEmail(string to, string body, string subject, List<MailAttatchment> attachments)
        {
            //send email
            bool sent;
            try
            {
                using (var smtpClient = new SmtpClient(ConfigurationManager.AppSettings["SmtpServer"]))
                {
                    var mail = new MailMessage { From = new MailAddress(ConfigurationManager.AppSettings["NoReplyEmail"], ConfigurationManager.AppSettings["NoReplyName"]) };

                    var address = to.Split(';');
                    foreach (var addr in address.Where(addr => !string.IsNullOrEmpty(addr)))
                    {
                        mail.To.Add(new MailAddress(addr));
                    }

                    if (attachments != null && attachments.Any())
                    {
                        foreach (var attachment in attachments)
                        {
                            mail.Attachments.Add(new Attachment(new MemoryStream(attachment.Contents), attachment.Name ?? "RBKFileAttachment.pdf"));
                        }
                    }

                    var credentials = new NetworkCredential(ConfigurationManager.AppSettings["SmtpUsername"], ConfigurationManager.AppSettings["SmtpPassword"]);

                    smtpClient.Credentials = credentials;
                    //smtpClient.EnableSsl = true;
                    smtpClient.Port = 587;

                    mail.Subject = subject;
                    mail.Body = body;
                    mail.IsBodyHtml = true;
                    mail.BodyEncoding = Encoding.UTF8;
                    mail.SubjectEncoding = Encoding.Default;

                    var now = DateTime.Now;
                    mail.Headers.Add("Message-Id", String.Concat("<", now.ToString("yyMMdd"), ".", now.ToString("HHmmss"), "@buddyfinance.co.za>"));
                    mail.Headers.Add("Content-Type", "multipart/mixed;");

                    smtpClient.Send(mail);
                    Logger.Log(LogTypeEnum.Information, "Email sent successfully to " + to + ", subject: " + subject, 0, "", "");
                    sent = true;
                }
            }
            catch (Exception ex)
            {
                // _logger.Log(LogTypeEnum. "Failed to send Email to " + to + ", subject: " + subject, user, ipaddress, useragent);
                Logger.LogError(ex, 0, "", "");
                sent = false;
            }

            return sent;
        }

        public async Task<bool> SendEmailSendGridAsync(string to, string body, string subject, List<MailAttatchment> attachments)
        {
            bool sent;
            try
            {

                var mail = new MailMessage
                {
                    From = new MailAddress(
                    ConfigurationManager.AppSettings["NoReplyEmail"], ConfigurationManager.AppSettings["NoReplyName"]
                )
                };

                var address = to.Split(';');
                foreach (var addr in address.Where(addr => !string.IsNullOrEmpty(addr)))
                {
                    mail.To.Add(new MailAddress(addr));
                }

                if (attachments != null && attachments.Any())
                {
                    foreach (var attachment in attachments)
                    {
                        mail.Attachments.Add(new Attachment(new MemoryStream(attachment.Contents), attachment.Name ?? "RBKFileAttachment.pdf"));
                    }
                }

                mail.Subject = subject;
            
                mail.Body = body;
                mail.IsBodyHtml = true;
                mail.BodyEncoding = Encoding.UTF8;
                mail.SubjectEncoding = Encoding.Default;
                var key = ConfigurationManager.AppSettings["SendGridKey"];

                var now = DateTime.Now;
                mail.Headers.Add("Message-Id", String.Concat("<", now.ToString("yyMMdd"), ".", now.ToString("HHmmss"), "@buddyfinance.co.za>"));
                mail.Headers.Add("Content-Type", "multipart/mixed;");

                var client = new SmtpClient(host: "smtp.sendgrid.net", port: 587)
                {
                    Credentials = new NetworkCredential(
                    userName: "apikey", // the userName is the exact string "apikey" and not the API key itself.
                    password: key
                )
                };

                await client.SendMailAsync(mail);
                Logger.Log(LogTypeEnum.Information, "Email sent successfully to " + to + ", subject: " + subject, 0, "", "");
                sent = true;
            }
            catch (Exception ex)
            {
                // _logger.Log(LogTypeEnum. "Failed to send Email to " + to + ", subject: " + subject, user, ipaddress, useragent);
                Logger.LogError(ex, 0, "", "");
                sent = false;
            }

            return sent;
        }
    }
}