feat(mass-email): ✨ Added the ability to configure the Mass Email, we can now send BCC and we are less likely to be rate limited when not using bcc #4377

src/Ombi.Core.Tests/Senders/MassEmailSenderTests.cs

@@ -38,9 +38,9 @@ namespace Ombi.Core.Tests.Senders
             {
                 Body = "Test",
                 Subject = "Subject",
-                Users = new List<Store.Entities.OmbiUser>
+                Users = new List<OmbiUser>
                 {
-                    new Store.Entities.OmbiUser
+                    new OmbiUser
                     {
                         Id = "a"
                     }
@@ -143,5 +143,86 @@ namespace Ombi.Core.Tests.Senders
 
             _mocker.Verify<IEmailProvider>(x => x.SendAdHoc(It.IsAny<NotificationMessage>(), It.IsAny<EmailNotificationSettings>()), Times.Never);
         }
+
+        [Test]
+        public async Task SendMassEmail_Bcc()
+        {
+            var model = new MassEmailModel
+            {
+                Body = "Test",
+                Subject = "Subject",
+                Bcc = true,
+                Users = new List<OmbiUser>
+                {
+                    new OmbiUser
+                    {
+                        Id = "a"
+                    },
+                    new OmbiUser
+                    {
+                        Id = "b"
+                    }
+                }
+            };
+
+            _mocker.Setup<OmbiUserManager, IQueryable<OmbiUser>>(x => x.Users).Returns(new List<OmbiUser>
+            {
+                new OmbiUser
+                {
+                    Id = "a",
+                    Email = "Test@test.com"
+                },
+                new OmbiUser
+                {
+                    Id = "b",
+                    Email = "b@test.com"
+                }
+            }.AsQueryable().BuildMock().Object);
+
+            var result = await _subject.SendMassEmail(model);
+
+            _mocker.Verify<IEmailProvider>(x => x.SendAdHoc(It.Is<NotificationMessage>(m => m.Subject == model.Subject
+            && m.Message == model.Body
+            && m.Other["bcc"] == "Test@test.com,b@test.com"), It.IsAny<EmailNotificationSettings>()), Times.Once);
+        }
+
+        [Test]
+        public async Task SendMassEmail_Bcc_NoEmails()
+        {
+            var model = new MassEmailModel
+            {
+                Body = "Test",
+                Subject = "Subject",
+                Bcc = true,
+                Users = new List<OmbiUser>
+                {
+                    new OmbiUser
+                    {
+                        Id = "a"
+                    },
+                    new OmbiUser
+                    {
+                        Id = "b"
+                    }
+                }
+            };
+
+            _mocker.Setup<OmbiUserManager, IQueryable<OmbiUser>>(x => x.Users).Returns(new List<OmbiUser>
+            {
+                new OmbiUser
+                {
+                    Id = "a",
+                },
+                new OmbiUser
+                {
+                    Id = "b",
+                }
+            }.AsQueryable().BuildMock().Object);
+
+            var result = await _subject.SendMassEmail(model);
+
+            _mocker.Verify<IEmailProvider>(x => x.SendAdHoc(It.IsAny<NotificationMessage>(), It.IsAny<EmailNotificationSettings>()), Times.Never);
+        }
+
     }
 }

src/Ombi.Core/Models/MassEmailModel.cs

@@ -35,6 +35,8 @@ namespace Ombi.Core.Models
         public string Subject { get; set; }
         public string Body { get; set; }
 
+        public bool Bcc { get; set; }
+
         public List<OmbiUser> Users { get; set; }
     }
 }

src/Ombi.Core/Senders/MassEmailSender.cs

@@ -25,7 +25,9 @@
 //  ************************************************************************/
 #endregion
 
+using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Logging;
@@ -64,6 +66,63 @@ namespace Ombi.Core.Senders
             var customization = await _customizationService.GetSettingsAsync();
             var email = await _emailService.GetSettingsAsync();
             var messagesSent = new List<Task>();
+            if (model.Bcc)
+            {
+                await SendBccMails(model, customization, email, messagesSent);
+            }
+            else
+            {
+                await SendIndividualEmails(model, customization, email, messagesSent);
+            }
+
+            await Task.WhenAll(messagesSent);
+
+            return true;
+        }
+
+        private async Task SendBccMails(MassEmailModel model, CustomizationSettings customization, EmailNotificationSettings email, List<Task> messagesSent)
+        {
+            var resolver = new NotificationMessageResolver();
+            var curlys = new NotificationMessageCurlys();
+
+            var validUsers = new List<OmbiUser>();
+            foreach (var user in model.Users)
+            {
+                var fullUser = await _userManager.Users.FirstOrDefaultAsync(x => x.Id == user.Id);
+                if (!fullUser.Email.HasValue())
+                {
+                    _log.LogInformation("User {0} has no email, cannot send mass email to this user", fullUser.UserName);
+                    continue;
+                }
+
+                validUsers.Add(fullUser);
+            }
+            
+            if (!validUsers.Any())
+            {
+                return;
+            }
+
+            var firstUser = validUsers.FirstOrDefault();
+
+            var bccAddress = string.Join(',', validUsers.Select(x => x.Email));
+            curlys.Setup(firstUser, customization);
+            var template = new NotificationTemplates() { Message = model.Body, Subject = model.Subject };
+            var content = resolver.ParseMessage(template, curlys);
+            var msg = new NotificationMessage
+            {
+                Message = content.Message,
+                Subject = content.Subject,
+                Other = new Dictionary<string, string> { { "bcc", bccAddress } }
+            };
+
+            messagesSent.Add(_email.SendAdHoc(msg, email));
+        }
+
+        private async Task SendIndividualEmails(MassEmailModel model, CustomizationSettings customization, EmailNotificationSettings email, List<Task> messagesSent)
+        {
+            var resolver = new NotificationMessageResolver();
+            var curlys = new NotificationMessageCurlys();
             foreach (var user in model.Users)
             {
                 var fullUser = await _userManager.Users.FirstOrDefaultAsync(x => x.Id == user.Id);
@@ -72,8 +131,6 @@ namespace Ombi.Core.Senders
                     _log.LogInformation("User {0} has no email, cannot send mass email to this user", fullUser.UserName);
                     continue;
                 }
-                var resolver = new NotificationMessageResolver();
-                var curlys = new NotificationMessageCurlys();
                 curlys.Setup(fullUser, customization);
                 var template = new NotificationTemplates() { Message = model.Body, Subject = model.Subject };
                 var content = resolver.ParseMessage(template, curlys);
@@ -83,13 +140,19 @@ namespace Ombi.Core.Senders
                     To = fullUser.Email,
                     Subject = content.Subject
                 };
-                messagesSent.Add(_email.SendAdHoc(msg, email));
+                messagesSent.Add(DelayEmail(msg, email));
                 _log.LogInformation("Sent mass email to user {0} @ {1}", fullUser.UserName, fullUser.Email);
             }
+        }
 
-            await Task.WhenAll(messagesSent);
-
-            return true;
+        /// <summary>
+        /// This will add a 2 second delay, this is to help with concurrent connection limits
+        /// <see href="https://github.com/Ombi-app/Ombi/issues/4377"/>
+        /// </summary>
+        private async Task DelayEmail(NotificationMessage msg, EmailNotificationSettings email)
+        {
+            await Task.Delay(2000);
+            await _email.SendAdHoc(msg, email);
         }
     }
 }

src/Ombi.Notifications/GenericEmailProvider.cs

@@ -64,7 +64,20 @@ namespace Ombi.Notifications
                     MessageId = messageId
                 };
                 message.From.Add(new MailboxAddress(string.IsNullOrEmpty(settings.SenderName) ? settings.SenderAddress : settings.SenderName, settings.SenderAddress));
-                message.To.Add(new MailboxAddress(model.To, model.To));
+                if (model.To.HasValue())
+                {
+                    message.To.Add(new MailboxAddress(model.To, model.To));
+                }
+
+                // Check for BCC
+                if (model.Other.TryGetValue("bcc", out var bcc))
+                {
+                    var bccList = bcc.Split(',', StringSplitOptions.RemoveEmptyEntries);
+                    foreach (var item in bccList)
+                    {
+                        message.Bcc.Add(new MailboxAddress(item, item));
+                    }
+                }
                 
                 using (var client = new SmtpClient())
                 {

src/Ombi/.vscode/settings.json

@@ -10,13 +10,13 @@
     "cSpell.words": [
         "usermanagement"
     ],
-    "discord.enabled": true,
     "conventionalCommits.scopes": [
         "discover",
         "request-limits",
         "notifications",
         "settings",
         "user-management",
-        "newsletter"
+        "newsletter",
+        "mass-email"
     ]
 }

src/Ombi/ClientApp/src/app/interfaces/IUser.ts

@@ -121,6 +121,7 @@ export interface IMassEmailModel {
     subject: string;
     body: string;
     users: IUser[];
+    bcc: boolean;
 }
 
 export interface INotificationPreferences {

src/Ombi/ClientApp/src/app/settings/massemail/massemail.component.html

@@ -3,15 +3,15 @@
 <wiki></wiki>
 <fieldset>
     <legend>Mass Email</legend>
-
+<div class="row">
     <div class="col-md-6">
             <div class="form-group">
                         <input type="text" class="form-control form-control-custom " id="subject" name="subject" placeholder="Subject" [(ngModel)]="subject" [ngClass]="{'form-error': missingSubject}">
                         <small *ngIf="missingSubject" class="error-text">Hey! We need a subject!</small>
                 </div>
 
-            <div class="form-group" >
-                    <textarea rows="10" type="text" class="form-control-custom form-control " id="themeContent" name="themeContent" [(ngModel)]="message"></textarea>
+                <div class="form-group" >
+                    <textarea rows="10" type="text" class="form-control-custom form-control" id="themeContent" name="themeContent" [(ngModel)]="message" placeholder="This supports HTML"></textarea>
                 </div>
 
                 <div class="form-group">
@@ -20,7 +20,14 @@
                     <small>May appear differently on email clients</small>
                     <hr/>
                     <div [innerHTML]="message"></div>
+                    <hr/>
                 </div>
+                <small>This will send out the Mass email BCC'ing all of the selected users rather than sending individual messages</small>
+                <div class="md-form-field">
+                    <mat-slide-toggle [(ngModel)]="bcc">BCC</mat-slide-toggle>
+                  </div>
+                  <br>
+                  <br>
                 <div class="form-group">
                         <div>
                             <button type="submit" id="save" (click)="send()" class="mat-focus-indicator btn-spacing mat-raised-button mat-button-base mat-accent">Send</button>
@@ -28,23 +35,21 @@
                     </div>
     </div>
     <div class="col-md-6">
-        <!--Users Section--> 
-         <label class="control-label">Recipients</label>
+        <!--Users Section-->
+         <label class="control-label">Recipients with Email Addresses</label>
         <div class="form-group">
-                <div class="checkbox">
-                    <input type="checkbox" id="all" (click)="selectAllUsers()">
-                    <label for="all">Select All</label>
-                </div>
+            <div class="md-form-field">
+                <mat-slide-toggle (change)="selectAllUsers($event)">Select All</mat-slide-toggle>
+              </div>
             </div>
 
             <div class="form-group" *ngFor="let u of users">
-                    <div class="checkbox">
-                        <input type="checkbox" id="user{{u.user.id}}" [(ngModel)]="u.selected">
-                        <label for="user{{u.user.id}}">{{u.user.userName}}</label>
-                    </div>
+                <div class="md-form-field">
+                    <mat-slide-toggle id="user{{u.user.id}}" [(ngModel)]="u.selected">{{u.user.userName}} ({{u.user.emailAddress}})</mat-slide-toggle>
+                  </div>
                 </div>
     </div>
-
+</div>
 
 
 </fieldset>

src/Ombi/ClientApp/src/app/settings/massemail/massemail.component.ts

@@ -12,6 +12,7 @@ export class MassEmailComponent implements OnInit {
     public users: IMassEmailUserModel[] = [];
     public message: string;
     public subject: string;
+    public bcc: boolean;
 
     public missingSubject = false;
 
@@ -26,17 +27,19 @@ export class MassEmailComponent implements OnInit {
     public ngOnInit(): void {
        this.identityService.getUsers().subscribe(x => {
         x.forEach(u => {
-            this.users.push({
-                user: u,
-                selected: false,
-            });
+            if (u.emailAddress) {
+                this.users.push({
+                    user: u,
+                    selected: false,
+                });
+            }
         });
        });
        this.settingsService.getEmailSettingsEnabled().subscribe(x => this.emailEnabled = x);
     }
 
-    public selectAllUsers() {
-        this.users.forEach(u => u.selected = !u.selected);
+    public selectAllUsers(event: any) {
+        this.users.forEach(u => u.selected = event.checked);
     }
 
     public send() {
@@ -44,10 +47,10 @@ export class MassEmailComponent implements OnInit {
             this.missingSubject = true;
             return;
         }
-        if(!this.emailEnabled) {
-            this.notification.error("You have not yet setup your email notifications, do that first!");
-            return;
-        }
+        // if(!this.emailEnabled) {
+        //     this.notification.error("You have not yet setup your email notifications, do that first!");
+        //     return;
+        // }
         this.missingSubject = false;
         // Where(x => x.selected).Select(x => x.user)
         const selectedUsers = this.users.filter(u => {
@@ -63,6 +66,7 @@ export class MassEmailComponent implements OnInit {
             users: selectedUsers,
             subject: this.subject,
             body: this.message,
+            bcc: this.bcc,
         };
         this.notification.info("Sending","Sending mass email... Please wait");
         this.notificationMessageService.sendMassEmail(model).subscribe(x => {