using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
using TIAM.Core.Consts;

namespace TIAM.Services.Server
{
 
    public static class EmailTemplateHelper
    {
        public static string GetTemplate(string templateName)
        {
            var assembly = Assembly.GetExecutingAssembly();
            var resourceName = $"TIAM.Services.Server.EmbeddedResources.EmailTemplates.{templateName}.html";
            Console.WriteLine(resourceName);
            if (assembly.GetManifestResourceStream(resourceName) != null)
            {

                using (Stream stream = assembly.GetManifestResourceStream(resourceName))
                {
                    if (stream != null)
                    {
                        using (StreamReader reader = new StreamReader(stream))
                        {
                            return reader.ReadToEnd();
                        }
                    }
                    else
                    {                       
                        return "File not found";
                    }
                }
            }
            else
            {
                return "Error";
            }
        }

        public static string ReplacePlaceholders(string template, IDictionary<string, string> placeholders)
        {
            foreach (var placeholder in placeholders)
            {
                template = template.Replace($"{{{{{placeholder.Key}}}}}", placeholder.Value);
            }
            return template;
        }

        public static string GenerateForgotPasswordEmail(string userName, string settingBaseUrl, string userId, string token)
        {
            string template = EmailTemplateHelper.GetTemplate(TiamConstClient.ForgotPasswordEmailTemplateName);

            var placeholders = new Dictionary<string, string>
            {
                { TiamConstClient.ForgotPasswordEmailParameters[0], userName },
                { TiamConstClient.ForgotPasswordEmailParameters[1], settingBaseUrl },
                { TiamConstClient.ForgotPasswordEmailParameters[2], userId },
                { TiamConstClient.ForgotPasswordEmailParameters[3], token }
            };

            return EmailTemplateHelper.ReplacePlaceholders(template, placeholders);
        }

        public static string GenerateNewTransferEmail(string userName, string fromAddress, string toAddress, string appointment, string fullName, string passengerCount, string luggageCount, string settingBaseUrl, string transferId)
        {
            string template = EmailTemplateHelper.GetTemplate(TiamConstClient.NewTransferEmailTemplateName);

            var placeholders = new Dictionary<string, string>
            {
                { TiamConstClient.NewTransferEmailParameters[0], userName },
                { TiamConstClient.NewTransferEmailParameters[1], fromAddress },
                { TiamConstClient.NewTransferEmailParameters[2], toAddress },
                { TiamConstClient.NewTransferEmailParameters[3], appointment },
                { TiamConstClient.NewTransferEmailParameters[4], fullName },
                { TiamConstClient.NewTransferEmailParameters[5], passengerCount },
                { TiamConstClient.NewTransferEmailParameters[6], luggageCount },
                { TiamConstClient.NewTransferEmailParameters[7], settingBaseUrl },
                { TiamConstClient.NewTransferEmailParameters[8], transferId }
            };

            return EmailTemplateHelper.ReplacePlaceholders(template, placeholders);
        }

        public static string GenerateTransferModifiedEmail(string userName, string fromAddress, string toAddress, string appointment, string fullName, string passengerCount, string luggageCount, string settingBaseUrl, string transferId)
        {
            string template = EmailTemplateHelper.GetTemplate(TiamConstClient.TransferModifiedEmailTemplateName);

            var placeholders = new Dictionary<string, string>
            {
                { TiamConstClient.NewTransferEmailParameters[0], userName },
                { TiamConstClient.NewTransferEmailParameters[1], fromAddress },
                { TiamConstClient.NewTransferEmailParameters[2], toAddress },
                { TiamConstClient.NewTransferEmailParameters[3], appointment },
                { TiamConstClient.NewTransferEmailParameters[4], fullName },
                { TiamConstClient.NewTransferEmailParameters[5], passengerCount },
                { TiamConstClient.NewTransferEmailParameters[6], luggageCount },
                { TiamConstClient.NewTransferEmailParameters[7], settingBaseUrl },
                { TiamConstClient.NewTransferEmailParameters[8], transferId }
            };

            return EmailTemplateHelper.ReplacePlaceholders(template, placeholders);
        }

        public static string GenerateGeneralEmail(string userName, string messageBody, string settingBaseUrl, string userId)
        {
            string template = EmailTemplateHelper.GetTemplate(TiamConstClient.GeneralEmailTemplateName);

            var placeholders = new Dictionary<string, string>
            {
                { TiamConstClient.GeneralEmailParameters[0], userName },                
                { TiamConstClient.GeneralEmailParameters[1], messageBody },
                { TiamConstClient.GeneralEmailParameters[2], settingBaseUrl },
                { TiamConstClient.GeneralEmailParameters[3], userId }
            };

            return EmailTemplateHelper.ReplacePlaceholders(template, placeholders);
        }

        public static string GenerateWelcomeEmail(string userName, string settingBaseUrl, string userId, string token)
        {
            string template = EmailTemplateHelper.GetTemplate(TiamConstClient.WelcomeEmailTemplateName);

            var placeholders = new Dictionary<string, string>
            {
                { TiamConstClient.ForgotPasswordEmailParameters[0], userName },
                { TiamConstClient.ForgotPasswordEmailParameters[1], settingBaseUrl },
                { TiamConstClient.ForgotPasswordEmailParameters[2], userId },
                { TiamConstClient.ForgotPasswordEmailParameters[3], token }
            };

            return EmailTemplateHelper.ReplacePlaceholders(template, placeholders);
        }

    }
}