[Feature] Support for multiple subscription tiers (#3036)

Author: Misha-133

src/Discord.Net.Core/Entities/AppSubscriptions/ISubscription.cs

@@ -23,6 +23,11 @@ public interface ISubscription : ISnowflakeEntity
     /// </summary>
     IReadOnlyCollection<ulong> EntitlementIds { get; }
 
+    /// <summary>
+    ///     Gets the SKUs that this user will be subscribed to at renewal.
+    /// </summary>
+    IReadOnlyCollection<ulong> RenewalSKUIds { get; }
+
     /// <summary>
     ///     Gets the start of the current subscription period.
     /// </summary>

src/Discord.Net.Rest/API/Common/Subscription.cs

@@ -17,6 +17,9 @@ internal class Subscription
     [JsonProperty("entitlement_ids")]
     public ulong[] EntitlementIds { get; set; }
 
+    [JsonProperty("renewal_sku_ids")]
+    public ulong[] RenewalSKUIds { get; set; }
+
     [JsonProperty("current_period_start")]
     public DateTimeOffset CurrentPeriodStart { get; set; }
 

src/Discord.Net.Rest/Entities/AppSubscriptions/RestSubscription.cs

@@ -21,6 +21,9 @@ public class RestSubscription : RestEntity<ulong>, ISubscription
     /// <inheritdoc />
     public IReadOnlyCollection<ulong> EntitlementIds { get; private set; }
 
+    /// <inheritdoc />
+    public IReadOnlyCollection<ulong> RenewalSKUIds { get; private set; }
+
     /// <inheritdoc />
     public DateTimeOffset CurrentPeriodStart { get; private set; }
 
@@ -52,6 +55,7 @@ internal void Update(API.Subscription model)
         UserId = model.UserId;
         SKUIds = model.SKUIds.ToImmutableArray();
         EntitlementIds = model.EntitlementIds.ToImmutableArray();
+        RenewalSKUIds = model.RenewalSKUIds?.ToImmutableArray() ?? [];
         CurrentPeriodStart = model.CurrentPeriodStart;
         CurrentPeriodEnd = model.CurrentPeriodEnd;
         Status = model.Status;

src/Discord.Net.WebSocket/Entities/AppSubscriptions/SocketSubscription.cs

@@ -21,6 +21,9 @@ public class SocketSubscription : SocketEntity<ulong>, ISubscription
     /// <inheritdoc />
     public IReadOnlyCollection<ulong> EntitlementIds { get; private set; }
 
+    /// <inheritdoc />
+    public IReadOnlyCollection<ulong> RenewalSKUIds { get; private set; }
+
     /// <inheritdoc />
     public DateTimeOffset CurrentPeriodStart { get; private set; }
 
@@ -52,6 +55,7 @@ internal void Update(API.Subscription model)
         UserId = model.UserId;
         SKUIds = model.SKUIds.ToImmutableArray();
         EntitlementIds = model.EntitlementIds.ToImmutableArray();
+        RenewalSKUIds = model.RenewalSKUIds?.ToImmutableArray() ?? [];
         CurrentPeriodStart = model.CurrentPeriodStart;
         CurrentPeriodEnd = model.CurrentPeriodEnd;
         Status = model.Status;