using System;
using System.Configuration;
using System.IO;
using System.Web;
using System.Web.Hosting;

namespace CPE.Utilities {
    public static class Email {
        public static string EmailBody {
            get {
                string filePath = $"{ConfigurationManager.AppSettings["CertificateEmailBody"]}";
                return File.ReadAllText(filePath);
            }
        }

        public static string WebcastEmailBody {
            get {
                string filePath = $"{ConfigurationManager.AppSettings["WebcastCertificateEmailBody"]}";
                return File.ReadAllText(filePath);
            }
        }

        public static string FailEmailBody {
            get {
                string filePath = $"{ConfigurationManager.AppSettings["WebcastFailEmailBody"]}";
                return File.ReadAllText(filePath);
            }
        }

        public static string RenderEmail(string contentUrl, DateTime? certificateDate, string ticket) {
            if(!certificateDate.HasValue)
                return string.Empty;
            var emailBody = EmailBody;
            var certLink = ConfigurationManager.AppSettings["CertLink"];
            var certURl = string.Format(certLink, contentUrl, certificateDate.Value.ToString("yyyyMMdd"), ticket);
            return emailBody.Replace("certUrl", certURl);
        }

        public static string RenderWebcastEmail(string certURl) {
            var emailBody = WebcastEmailBody;
            return emailBody.Replace("certUrl", certURl);
        }

        public static string RenderCertLink(int meetingSco, DateTime purchaseDate, string ticket) {
            var meetingUrl = meetingSco.ToString();
            var certLink = ConfigurationManager.AppSettings["CertLink"];
            var certURl = string.Format(certLink, meetingUrl, purchaseDate.ToString("yyyyMMdd"), ticket);
            return certURl;
        }

        public static string RenderFailEmail() {
            var emailBody = FailEmailBody;
            return emailBody;
        }

        private static string MapServerPath(string path) {
            string returnValue = null;
            if(HttpContext.Current != null) {
                returnValue = HttpContext.Current.Server.MapPath(path);
            } else {
                returnValue = HostingEnvironment.MapPath(path);
            }
            return returnValue;
        }
    }
}