Organization autoscaling (#1585)

* Add autoscale fields to Organization

* Add autoscale setting changes

* Autoscale organizations

updates InviteUsersAsync to support all invite sources.

sends an email to org owners when organization autoscaled

* All organizations autoscale

Disabling autoscaling can be done by setting max seats to current seats.

We only warn about autoscaling on the first autoscaling event.

* Fix tests

* Bug fixes

* Simplify subscription update logic

* Void invoices that fail to delete

Stripe no longer allows deletion of draft invoices that were created as part of subscription updates. It's necessary to void out these invoices without sending tem to the client.

* Notify org owners when their subscription runs out of seats

* Use datetime for notifications

Allows for later re-sending email if we want to periodically remind
owners

* Do not update subscription if it already matches new quatity

* Include all migrations

* Remove unnecessary inline styling

* SubscriptionUpdate handles update decisions

* Remove unnecessary html setter

* PR review

* Use minimum access for class methods

src/Core/Models/Api/Request/Organizations/OrganizationCreateRequestModel.cs

@@ -40,6 +40,7 @@ namespace Bit.Core.Models.Api
         public string BillingAddressPostalCode { get; set; }
         [StringLength(2)]
         public string BillingAddressCountry { get; set; }
+        public int? MaxAutoscaleSeats { get; set; }
 
         public virtual OrganizationSignup ToOrganizationSignup(User user)
         {
@@ -52,6 +53,7 @@ namespace Bit.Core.Models.Api
                 PaymentMethodType = PaymentMethodType,
                 PaymentToken = PaymentToken,
                 AdditionalSeats = AdditionalSeats,
+                MaxAutoscaleSeats = MaxAutoscaleSeats,
                 AdditionalStorageGb = AdditionalStorageGb.GetValueOrDefault(0),
                 PremiumAccessAddon = PremiumAccessAddon,
                 BillingEmail = BillingEmail,

src/Core/Models/Api/Request/Organizations/OrganizationSubscriptionUpdateRequestModel.cs

@@ -0,0 +1,11 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace Bit.Core.Models.Api
+{
+    public class OrganizationSubscriptionUpdateRequestModel
+    {
+        [Required]
+        public int SeatAdjustment { get; set; }
+        public int? MaxAutoscaleSeats { get; set; }
+    }
+}

src/Core/Models/Api/Response/OrganizationResponseModel.cs

@@ -30,6 +30,7 @@ namespace Bit.Core.Models.Api
             Plan = new PlanResponseModel(Utilities.StaticStore.Plans.FirstOrDefault(plan => plan.Type == organization.PlanType));
             PlanType = organization.PlanType;
             Seats = organization.Seats;
+            MaxAutoscaleSeats = organization.MaxAutoscaleSeats;
             MaxCollections = organization.MaxCollections;
             MaxStorageGb = organization.MaxStorageGb;
             UsePolicies = organization.UsePolicies;
@@ -59,6 +60,7 @@ namespace Bit.Core.Models.Api
         public PlanResponseModel Plan { get; set; }
         public PlanType PlanType { get; set; }
         public int? Seats { get; set; }
+        public int? MaxAutoscaleSeats { get; set; } = null;
         public short? MaxCollections { get; set; }
         public short? MaxStorageGb { get; set; }
         public bool UsePolicies { get; set; }

src/Core/Models/Business/OrganizationLicense.cs

@@ -177,7 +177,7 @@ namespace Bit.Core.Models.Business
             }
         }
 
-        public bool CanUse(GlobalSettings globalSettings)
+        public bool CanUse(IGlobalSettings globalSettings)
         {
             if (!Enabled || Issued > DateTime.UtcNow || Expires < DateTime.UtcNow)
             {

src/Core/Models/Business/OrganizationSignup.cs

@@ -12,5 +12,6 @@ namespace Bit.Core.Models.Business
         public string CollectionName { get; set; }
         public PaymentMethodType? PaymentMethodType { get; set; }
         public string PaymentToken { get; set; }
+        public int? MaxAutoscaleSeats { get; set; } = null;
     }
 }

src/Core/Models/Business/SubscriptionUpdate.cs

@@ -1,7 +1,6 @@
 using System.Linq;
 using Bit.Core.Models.Table;
 using Stripe;
-using StaticStore = Bit.Core.Models.StaticStore;
 
 namespace Bit.Core.Models.Business
 {
@@ -11,6 +10,10 @@ namespace Bit.Core.Models.Business
 
         public abstract SubscriptionItemOptions RevertItemOptions(Subscription subscription);
         public abstract SubscriptionItemOptions UpgradeItemOptions(Subscription subscription);
+
+        public bool UpdateNeeded(Subscription subscription) =>
+            (SubscriptionItem(subscription)?.Quantity ?? 0) != (UpgradeItemOptions(subscription).Quantity ?? 0);
+
         protected SubscriptionItem SubscriptionItem(Subscription subscription) =>
             subscription.Items?.Data?.FirstOrDefault(i => i.Plan.Id == PlanId);
     }

src/Core/Models/Mail/OrganizationSeatsAutoscaledViewModel.cs

@@ -0,0 +1,11 @@
+using System;
+
+namespace Bit.Core.Models.Mail
+{
+    public class OrganizationSeatsAutoscaledViewModel : BaseMailModel
+    {
+        public Guid OrganizationId { get; set; }
+        public int InitialSeatCount { get; set; }
+        public int CurrentSeatCount { get; set; }
+    }
+}

src/Core/Models/Mail/OrganizationSeatsMaxReachedViewModel.cs

@@ -0,0 +1,10 @@
+using System;
+
+namespace Bit.Core.Models.Mail
+{
+    public class OrganizationSeatsMaxReachedViewModel : BaseMailModel
+    {
+        public Guid OrganizationId { get; set; }
+        public int MaxSeatCount { get; set; }
+    }
+}

src/Core/Models/StaticStore/Plan.cs

@@ -15,6 +15,7 @@ namespace Bit.Core.Models.StaticStore
         public short? BaseStorageGb { get; set; }
         public short? MaxCollections { get; set; }
         public short? MaxUsers { get; set; }
+        public bool AllowSeatAutoscale { get; set; }
 
         public bool HasAdditionalSeatsOption { get; set; }
         public int? MaxAdditionalSeats { get; set; }

src/Core/Models/Table/Organization.cs

@@ -66,6 +66,8 @@ namespace Bit.Core.Models.Table
         public DateTime? ExpirationDate { get; set; }
         public DateTime CreationDate { get; internal set; } = DateTime.UtcNow;
         public DateTime RevisionDate { get; internal set; } = DateTime.UtcNow;
+        public int? MaxAutoscaleSeats { get; set; } = null;
+        public DateTime? OwnersNotifiedOfAutoscaling { get; set; } = null;
 
         public void SetNewId()
         {