Add Premium end date reminder worker

src/EventHub.BackgroundServices/EventHubBackgroundServicesModule.cs

@@ -1,5 +1,6 @@
 using EventHub.EntityFrameworkCore;
 using EventHub.Events;
+using EventHub.Organizations;
 using Microsoft.AspNetCore.DataProtection;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
@@ -45,6 +46,8 @@ namespace EventHub
             context.AddBackgroundWorker<EventReminderWorker>();
             context.AddBackgroundWorker<NewEventWorker>();
             context.AddBackgroundWorker<EventTimingChangeWorker>();
+            
+            context.AddBackgroundWorker<OrganizationPremiumEndDateWorker>();
         }
     }
 }

src/EventHub.BackgroundServices/Organizations/OrganizationPremiumEndDateNotifier.cs

@@ -0,0 +1,59 @@
+using System;
+using System.Threading.Tasks;
+using EventHub.Emailing;
+using Microsoft.Extensions.Logging;
+using Volo.Abp.DependencyInjection;
+using Volo.Abp.Domain.Repositories;
+using Volo.Abp.Emailing;
+using Volo.Abp.Identity;
+using Volo.Abp.TextTemplating;
+
+namespace EventHub.Organizations
+{
+    public class OrganizationPremiumEndDateNotifier : ITransientDependency
+    {
+        private readonly IEmailSender _emailSender;
+        private readonly ITemplateRenderer _templateRenderer;
+        private readonly IRepository<IdentityUser, Guid> _userRepository;
+        private readonly ILogger<OrganizationPremiumEndDateNotifier> _logger;
+
+        public OrganizationPremiumEndDateNotifier(
+            IEmailSender emailSender, 
+            ITemplateRenderer templateRenderer,
+            IRepository<IdentityUser, Guid> userRepository,
+            ILogger<OrganizationPremiumEndDateNotifier> logger)
+        {
+            _emailSender = emailSender;
+            _templateRenderer = templateRenderer;
+            _userRepository = userRepository;
+            _logger = logger;
+        }
+        
+        public async Task NotifyAsync(Organization organization)
+        {
+            if (organization is null || organization.IsSendPremiumReminderEmail || !organization.IsPremium)
+            {
+                return;
+            }
+
+            var user = await _userRepository.FindAsync(organization.OwnerUserId);
+            if (user is null)
+            {
+                _logger.LogError("(OrganizationPremiumEndDateNotifier) User not found!");
+                return;
+            }
+            
+            var templateModel = new
+            {
+                OrganizationName = organization.Name,
+                EndDate = organization.PremiumEndDate!.Value.ToShortDateString()
+            };
+
+            await _emailSender.SendAsync(
+                user.Email,
+                "EventHub: Your Premium Organization is expiring!",
+                await _templateRenderer.RenderAsync(EmailTemplates.PremiumEndDateReminder, templateModel)
+            );
+        }
+    }
+}

src/EventHub.BackgroundServices/Organizations/OrganizationPremiumEndDateWorker.cs

@@ -0,0 +1,99 @@
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using Volo.Abp.BackgroundWorkers;
+using Volo.Abp.Domain.Repositories;
+using Volo.Abp.Linq;
+using Volo.Abp.Threading;
+using Volo.Abp.Timing;
+using Volo.Abp.Uow;
+
+namespace EventHub.Organizations
+{
+    public class OrganizationPremiumEndDateWorker : AsyncPeriodicBackgroundWorkerBase
+    {
+        public OrganizationPremiumEndDateWorker(AbpAsyncTimer timer, IServiceScopeFactory serviceScopeFactory) : base(timer, serviceScopeFactory)
+        {
+            Timer.Period = (int)TimeSpan.FromDays(1).TotalMilliseconds;
+        }
+
+        [UnitOfWork(isTransactional: false)]
+        protected override async Task DoWorkAsync(PeriodicBackgroundWorkerContext workerContext)
+        {
+            var organizationPremiumEndDateNotifier = workerContext.ServiceProvider.GetRequiredService<OrganizationPremiumEndDateNotifier>();
+            var organizationRepository = workerContext.ServiceProvider.GetRequiredService<IRepository<Organization, Guid>>();
+            var asyncExecuter = workerContext.ServiceProvider.GetRequiredService<IAsyncQueryableExecuter>();
+            var clock = workerContext.ServiceProvider.GetRequiredService<IClock>();
+
+            await SendPremiumReminderEmail(organizationRepository, organizationPremiumEndDateNotifier, asyncExecuter, clock);
+            await UpdatePremiumExpiredOrganization(organizationRepository, asyncExecuter, clock);
+        }
+
+        private async Task SendPremiumReminderEmail(
+            IRepository<Organization, Guid> organizationRepository,
+            OrganizationPremiumEndDateNotifier organizationPremiumEndDateNotifier, 
+            IAsyncQueryableExecuter asyncExecuter,
+            IClock clock)
+        {
+            var oneMonthLater = clock.Now.AddMonths(1);
+            var queryable = await organizationRepository.GetQueryableAsync();
+            var query = queryable.Where(x =>
+                x.IsSendPremiumReminderEmail == false &&
+                x.PremiumEndDate <= oneMonthLater
+            );
+
+            var organizations = await asyncExecuter.ToListAsync(query);
+
+            foreach (var organization in organizations)
+            {
+                try
+                {
+                    if (organization.IsPremium)
+                    {
+                        if (organization.PremiumEndDate >= clock.Now)
+                        {
+                            await organizationPremiumEndDateNotifier.NotifyAsync(organization);
+                        }
+
+                        organization.IsSendPremiumReminderEmail = true;
+                        await organizationRepository.UpdateAsync(organization);
+                    }
+                }
+                catch (Exception ex)
+                {
+                    Logger.LogException(ex);
+                }
+            }
+        }
+        
+        private async Task UpdatePremiumExpiredOrganization(IRepository<Organization, Guid> organizationRepository, IAsyncQueryableExecuter asyncExecuter, IClock clock)
+        {
+            var queryable = await organizationRepository.GetQueryableAsync();
+            var query = queryable.Where(x =>
+                x.PremiumEndDate >= clock.Now
+            );
+
+            var organizations = await asyncExecuter.ToListAsync(query);
+
+            foreach (var organization in organizations)
+            {
+                try
+                {
+                    if (!organization.IsPremium)
+                    {
+                        continue;
+                    }
+
+                    organization.DowngradeToPremium();
+                    await organizationRepository.UpdateAsync(organization);
+                }
+                catch (Exception ex)
+                {
+                    Logger.LogException(ex);
+                }
+            }
+        }
+    }
+}

src/EventHub.Domain/Emailing/EmailTemplateDefinitionProvider.cs

@@ -73,6 +73,15 @@ namespace EventHub.Emailing
                         isInlineLocalized: true
                     )
             );
+            
+            context.Add(
+                new TemplateDefinition(
+                        EmailTemplates.PremiumEndDateReminder)
+                    .WithVirtualFilePath(
+                        "/Emailing/Templates/PremiumEndDateReminder.tpl",
+                        isInlineLocalized: true
+                    )
+            );
         }
     }
 }

src/EventHub.Domain/Emailing/EmailTemplates.cs

@@ -15,5 +15,7 @@ namespace EventHub.Emailing
         public const string PaymentRequestCompleted = "EventHub.Organization.PaymentRequestCompleted";
         
         public const string PaymentRequestFailed = "EventHub.Organization.PaymentRequestFailed";
+        
+        public const string PremiumEndDateReminder = "EventHub.Organization.PremiumEndDateReminder";
     }
 }

src/EventHub.Domain/Emailing/Templates/PremiumEndDateReminder.tpl

@@ -0,0 +1,334 @@
+<!DOCTYPE html>
+<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" lang="en">
+
+<head>
+	<title></title>
+	<meta charset="UTF-8">
+	<meta name="viewport" content="width=device-width, initial-scale=1.0">
+	<!--[if mso]><xml><o:OfficeDocumentSettings><o:PixelsPerInch>96</o:PixelsPerInch><o:AllowPNG/></o:OfficeDocumentSettings></xml><![endif]-->
+	<style>
+		* {
+			box-sizing: border-box;
+		}
+
+		body {
+			margin: 0;
+			padding: 0;
+		}
+
+		th.column {
+			padding: 0
+		}
+
+		a[x-apple-data-detectors] {
+			color: inherit !important;
+			text-decoration: inherit !important;
+		}
+
+		#MessageViewBody a {
+			color: inherit;
+			text-decoration: none;
+		}
+
+		p {
+			line-height: inherit
+		}
+
+		@media (max-width:660px) {
+			.row-content {
+				width: 100% !important;
+			}
+
+			.stack .column {
+				width: 100%;
+				display: block;
+			}
+		}
+	</style>
+</head>
+
+<body style="background-color: #f8f8f9; margin: 0; padding: 0; -webkit-text-size-adjust: none; text-size-adjust: none;">
+	<table class="nl-container" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; background-color: #f8f8f9;">
+		<tbody>
+			<tr>
+				<td>
+					<table class="row row-1" align="center" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+						<tbody>
+							<tr>
+								<td>
+									<table class="row-content stack" align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; background-color: #fff;" width="640">
+										<tbody>
+											<tr>
+												<th class="column" width="100%" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; font-weight: 400; text-align: left; vertical-align: top; padding-top: 0px; padding-bottom: 0px; border-top: 0px; border-right: 0px; border-bottom: 0px; border-left: 0px;">
+													<table class="divider_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+														<tr>
+															<td style="padding-bottom:12px;padding-top:60px;">
+																<div align="center">
+																	<table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+																		<tr>
+																			<td class="divider_inner" style="font-size: 1px; line-height: 1px; border-top: 0px solid #BBBBBB;"><span></span></td>
+																		</tr>
+																	</table>
+																</div>
+															</td>
+														</tr>
+													</table>
+													<table class="image_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+														<tr>
+															<td style="padding-left:40px;padding-right:40px;width:100%;">
+																<div align="center" style="line-height:10px"><a href="{{app_url}}" target="_blank" style="outline:none" tabindex="-1"><img src="{{app_url}}//assets/eventhub-logo.svg" style="display: block; height: auto; border: 0; width: 352px; max-width: 100%;" width="352" alt="EventHub" title="EventHub"></a></div>
+															</td>
+														</tr>
+													</table>
+													<table class="divider_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+														<tr>
+															<td style="padding-top:50px;">
+																<div align="center">
+																	<table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+																		<tr>
+																			<td class="divider_inner" style="font-size: 1px; line-height: 1px; border-top: 0px solid #BBBBBB;"><span></span></td>
+																		</tr>
+																	</table>
+																</div>
+															</td>
+														</tr>
+													</table>
+													<table class="text_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; word-break: break-word;">
+														<tr>
+															<td style="padding-bottom:10px;padding-left:40px;padding-right:40px;padding-top:10px;">
+																<div style="font-family: sans-serif">
+																	<div style="font-size: 12px; color: #555555; line-height: 1.2; font-family: Montserrat, Trebuchet MS, Lucida Grande, Lucida Sans Unicode, Lucida Sans, Tahoma, sans-serif;">
+																		<p style="margin: 0; font-size: 16px; text-align: center;"><span style="font-size:30px;color:#2b303a;"><strong>Your Premium Organization is expiring</strong></span></p>
+																	</div>
+																</div>
+															</td>
+														</tr>
+													</table>
+													<table class="text_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; word-break: break-word;">
+														<tr>
+															<td style="padding-bottom:10px;padding-left:40px;padding-right:40px;padding-top:10px;">
+																<div style="font-family: sans-serif">
+																	<div style="font-size: 12px; font-family: Montserrat, Trebuchet MS, Lucida Grande, Lucida Sans Unicode, Lucida Sans, Tahoma, sans-serif; color: #555555; line-height: 1.5;">
+																		<p style="margin: 0; font-size: 14px; text-align: center;">If you want to take advantage of the privileges, you can extend the premium period.</p>
+																	</div>
+																</div>
+															</td>
+														</tr>
+													</table>
+													<table class="divider_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+														<tr>
+															<td style="padding-top:50px;">
+																<div align="center">
+																	<table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+																		<tr>
+																			<td class="divider_inner" style="font-size: 1px; line-height: 1px; border-top: 0px solid #BBBBBB;"><span></span></td>
+																		</tr>
+																	</table>
+																</div>
+															</td>
+														</tr>
+													</table>
+												</th>
+											</tr>
+										</tbody>
+									</table>
+								</td>
+							</tr>
+						</tbody>
+					</table>
+					<table class="row row-2" align="center" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+						<tbody>
+							<tr>
+								<td>
+									<table class="row-content" align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; background-color: #fff;" width="640">
+										<tbody>
+											<tr>
+												<th class="column" width="50%" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; font-weight: 400; text-align: left; vertical-align: top;">
+													<table width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+														<tr>
+															<td style="width:20px;background-color:#FFF">&nbsp;</td>
+															<td style="background-color:#f3fafa;border-right:8px solid #FFF;border-top:0px;border-bottom:0px;width:300px;">
+																<table class="divider_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+																	<tr>
+																		<td>
+																			<div align="center">
+																				<table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+																					<tr>
+																						<td class="divider_inner" style="font-size: 1px; line-height: 1px; border-top: 4px solid #D54560;"><span></span></td>
+																					</tr>
+																				</table>
+																			</div>
+																		</td>
+																	</tr>
+																</table>
+																<table class="text_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; word-break: break-word;">
+																	<tr>
+																		<td style="padding-bottom:40px;padding-left:5px;padding-right:5px;padding-top:35px;">
+																			<div style="font-family: sans-serif">
+																				<div style="font-size: 12px; color: #555555; line-height: 1.5; font-family: Montserrat, Trebuchet MS, Lucida Grande, Lucida Sans Unicode, Lucida Sans, Tahoma, sans-serif;">
+																					<p style="margin: 0; font-size: 16px; text-align: center;"><span style="color:#a2a9ad;"><strong>Organization name</strong></span></p>
+																					<p style="margin: 0; font-size: 16px; text-align: center;"><span style="color:#2b303a;"><span style="font-size:20px;"><strong>{{model.organization_name}}</strong></span></span></p>
+																				</div>
+																			</div>
+																		</td>
+																	</tr>
+																</table>
+															</td>
+														</tr>
+													</table>
+												</th>
+												<th class="column" width="50%" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; font-weight: 400; text-align: left; vertical-align: top;">
+													<table width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+														<tr>
+															<td style="background-color:#f3fafa;border-left:8px solid #FFF;border-top:0px;border-bottom:0px;width:300px;">
+																<table class="divider_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+																	<tr>
+																		<td>
+																			<div align="center">
+																				<table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+																					<tr>
+																						<td class="divider_inner" style="font-size: 1px; line-height: 1px; border-top: 4px solid #D54560;"><span></span></td>
+																					</tr>
+																				</table>
+																			</div>
+																		</td>
+																	</tr>
+																</table>
+																<table class="text_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; word-break: break-word;">
+																	<tr>
+																		<td style="padding-bottom:40px;padding-left:5px;padding-right:5px;padding-top:35px;">
+																			<div style="font-family: sans-serif">
+																				<div style="font-size: 12px; color: #555555; line-height: 1.5; font-family: Montserrat, Trebuchet MS, Lucida Grande, Lucida Sans Unicode, Lucida Sans, Tahoma, sans-serif;">
+																					<p style="margin: 0; font-size: 16px; text-align: center; mso-line-height-alt: 18px;"><span style="color:#a2a9ad;font-size:12px;"><strong>End Date</strong></span></p>
+																					<p style="margin: 0; font-size: 16px; text-align: center;"><span style="color:#2b303a;"><span style="font-size:20px;"><strong>{{model.end_date}}</strong></span></span></p>
+																				</div>
+																			</div>
+																		</td>
+																	</tr>
+																</table>
+															</td>
+															<td style="width:20px;background-color:#FFF">&nbsp;</td>
+														</tr>
+													</table>
+												</th>
+											</tr>
+										</tbody>
+									</table>
+								</td>
+							</tr>
+						</tbody>
+					</table>
+					<table class="row row-3" align="center" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+						<tbody>
+							<tr>
+								<td>
+									<table class="row-content stack" align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; background-color: #fff;" width="640">
+										<tbody>
+											<tr>
+												<th class="column" width="100%" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; font-weight: 400; text-align: left; vertical-align: top; padding-top: 0px; padding-bottom: 0px; border-top: 0px; border-right: 0px; border-bottom: 0px; border-left: 0px;">
+													<table class="button_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+														<tr>
+															<td style="padding-left:10px;padding-right:10px;padding-top:20px;text-align:center;">
+																<div align="center">
+																	<!--[if mso]><v:roundrect xmlns:v="urn:schemas-microsoft-com:vml" xmlns:w="urn:schemas-microsoft-com:office:word" href="{{app_url}}/pricing/{{model.organization_name}}" style="height:58px;width:134px;v-text-anchor:middle;" arcsize="104%" stroke="false" fillcolor="#d54560"><w:anchorlock/><v:textbox inset="0px,0px,0px,0px"><center style="color:#ffffff; font-family:Tahoma, sans-serif; font-size:14px"><![endif]--><a href="{{app_url}}/pricing/{{model.organization_name}}" target="_blank" style="text-decoration:none;display:inline-block;color:#ffffff;background-color:#d54560;border-radius:60px;width:auto;border-top:1px solid #d54560;border-right:1px solid #d54560;border-bottom:1px solid #d54560;border-left:1px solid #d54560;padding-top:15px;padding-bottom:15px;font-family:Montserrat, Trebuchet MS, Lucida Grande, Lucida Sans Unicode, Lucida Sans, Tahoma, sans-serif;text-align:center;mso-border-alt:none;word-break:keep-all;"><span style="padding-left:30px;padding-right:30px;font-size:14px;display:inline-block;letter-spacing:normal;"><span style="font-size: 12px; line-height: 2; word-break: break-word; mso-line-height-alt: 24px;"><span style="font-size: 14px; line-height: 28px;" data-mce-style="font-size: 14px; line-height: 28px;">Extend Now</span></span></span></a>
+																	<!--[if mso]></center></v:textbox></v:roundrect><![endif]-->
+																</div>
+															</td>
+														</tr>
+													</table>
+													<table class="divider_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+														<tr>
+															<td style="padding-bottom:12px;padding-top:24px;">
+																<div align="center">
+																	<table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+																		<tr>
+																			<td class="divider_inner" style="font-size: 1px; line-height: 1px; border-top: 0px solid #BBBBBB;"><span></span></td>
+																		</tr>
+																	</table>
+																</div>
+															</td>
+														</tr>
+													</table>
+												</th>
+											</tr>
+										</tbody>
+									</table>
+								</td>
+							</tr>
+						</tbody>
+					</table>
+					<table class="row row-4" align="center" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+						<tbody>
+							<tr>
+								<td>
+									<table class="row-content stack" align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; background-color: #2b303a;" width="640">
+										<tbody>
+											<tr>
+												<th class="column" width="100%" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; font-weight: 400; text-align: left; vertical-align: top; padding-top: 0px; padding-bottom: 0px; border-top: 0px; border-right: 0px; border-bottom: 0px; border-left: 0px;">
+													<table class="divider_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+														<tr>
+															<td>
+																<div align="center">
+																	<table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+																		<tr>
+																			<td class="divider_inner" style="font-size: 1px; line-height: 1px; border-top: 4px solid #D54560;"><span></span></td>
+																		</tr>
+																	</table>
+																</div>
+															</td>
+														</tr>
+													</table>
+													<table class="html_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+														<tr>
+															<td>
+																<div style="font-family:Montserrat, Trebuchet MS, Lucida Grande, Lucida Sans Unicode, Lucida Sans, Tahoma, sans-serif;" align="center"><div class="cont" style=" padding: 25px 0px 0; margin-top: 0px;">
+  <a href="{{app_url}}" style="font-size: 14px;  font-family: Arial, sans-serif;  color: #777;  font-weight: bold; margin-right: 30px; margin-bottom: 20px; text-decoration: none; display: inline-block;">Home</a>
+  <a href="{{app_url}}/events" style="font-size: 14px;  font-family: Arial, sans-serif;  color: #777;  font-weight: bold; margin-right: 30px; margin-bottom: 20px; text-decoration: none; display: inline-block;">Events</a>
+  <a href="{{app_url}}/organizations" style="font-size: 14px;  font-family: Arial, sans-serif;  color: #777;  font-weight: bold; margin-right: 30px; margin-bottom: 20px; text-decoration: none; display: inline-block;">Organizations</a>
+  <a href="{{app_url}}/terms-service" style="font-size: 14px;  font-family: Arial, sans-serif;  color: #777;  font-weight: bold; margin-right: 30px; margin-bottom: 20px; text-decoration: none; display: inline-block;">Term
+    of Service</a>
+  <a href="{{app_url}}/privacy-policy" style="font-size: 14px;  font-family: Arial, sans-serif;  color: #777;  font-weight: bold; margin-right:  0px; margin-bottom: 20px; text-decoration: none; display: inline-block;">Privacy
+    Policy</a>
+</div></div>
+															</td>
+														</tr>
+													</table>
+													<table class="divider_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+														<tr>
+															<td style="padding-bottom:10px;padding-left:40px;padding-right:40px;padding-top:10px;">
+																<div align="center">
+																	<table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt;">
+																		<tr>
+																			<td class="divider_inner" style="font-size: 1px; line-height: 1px; border-top: 1px solid #555961;"><span></span></td>
+																		</tr>
+																	</table>
+																</div>
+															</td>
+														</tr>
+													</table>
+													<table class="text_block" width="100%" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace: 0pt; mso-table-rspace: 0pt; word-break: break-word;">
+														<tr>
+															<td style="padding-bottom:30px;padding-left:40px;padding-right:40px;padding-top:20px;">
+																<div style="font-family: sans-serif">
+																	<div style="font-size: 12px; font-family: Montserrat, Trebuchet MS, Lucida Grande, Lucida Sans Unicode, Lucida Sans, Tahoma, sans-serif; color: #555555; line-height: 1.2;">
+																		<p style="margin: 0; font-size: 14px; text-align: center;"><span style="color:#95979c;font-size:12px;">EventHub - Powered by Volosoft</span></p>
+																	</div>
+																</div>
+															</td>
+														</tr>
+													</table>
+												</th>
+											</tr>
+										</tbody>
+									</table>
+								</td>
+							</tr>
+						</tbody>
+					</table>
+				</td>
+			</tr>
+		</tbody>
+	</table><!-- End -->
+</body>
+
+</html>

src/EventHub.Domain/Organizations/Organization.cs

@@ -33,6 +33,8 @@ namespace EventHub.Organizations
 
         public DateTime? PremiumEndDate { get; private set; }
 
+        public bool IsSendPremiumReminderEmail { get; set; }
+
         private Organization()
         {
         }
@@ -76,8 +78,13 @@ namespace EventHub.Organizations
             return this;
         }
         
-        internal Organization DowngradeToPremium(IClock clock)
+        public Organization DowngradeToPremium()
         {
+            if (!IsPremium)
+            {
+                return this;
+            }
+            
             SetPremiumStatus(false);
 
             return this;

src/EventHub.EntityFrameworkCore/Migrations/20211027131803_Added_IsSendPremiumReminderEmail_To_Organization.cs

@@ -0,0 +1,26 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace EventHub.Migrations
+{
+    public partial class Added_IsSendPremiumReminderEmail_To_Organization : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<bool>(
+                name: "IsSendPremiumReminderEmail",
+                table: "EhOrganizations",
+                type: "boolean",
+                nullable: false,
+                defaultValue: false);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "IsSendPremiumReminderEmail",
+                table: "EhOrganizations");
+        }
+    }
+}

src/EventHub.EntityFrameworkCore/Migrations/EventHubDbContextModelSnapshot.cs

@@ -305,6 +305,9 @@ namespace EventHub.Migrations
                     b.Property<bool>("IsPremium")
                         .HasColumnType("boolean");
 
+                    b.Property<bool>("IsSendPremiumReminderEmail")
+                        .HasColumnType("boolean");
+
                     b.Property<DateTime?>("LastModificationTime")
                         .HasColumnType("timestamp with time zone")
                         .HasColumnName("LastModificationTime");

src/EventHub.Web/Pages/Pricing.cshtml

@@ -1,4 +1,4 @@
-@page
+@page "/pricing/{organizationName}"
 @using EventHub.Localization
 @using Microsoft.AspNetCore.Mvc.Localization
 @model EventHub.Web.Pages.Pricing

src/EventHub.Web/Pages/Pricing.cshtml.cs

@@ -45,17 +45,17 @@ namespace EventHub.Web.Pages
 
         public async Task OnGetAsync()
         {
-            if (_premiumPlanInfoOptionsSnapshot.Value.IsActive)
-            {
-                PremiumPlanInfo = _premiumPlanInfoOptionsSnapshot.Value;
-            }
-
             Organization = await _organizationAppService.GetProfileAsync(OrganizationName);
-
             if (CurrentUser.UserName != Organization.OwnerUserName)
             {
                 throw new AbpAuthorizationException();
             }
+            
+            if (_premiumPlanInfoOptionsSnapshot.Value.IsActive)
+            {
+                PremiumPlanInfo = _premiumPlanInfoOptionsSnapshot.Value;
+            }
+
         }
 
         public async Task<IActionResult> OnPostUpgradeAsync()