[Feature] Get current bot application information (#2619)

* initial commit

* Add support for modifying current bot's app

src/Discord.Net.Core/DiscordConfig.cs

@@ -222,5 +222,15 @@ namespace Discord
         ///     The maximum number of thread members that can be gotten per-batch.
         /// </returns>
         public const int MaxThreadMembersPerBatch = 100;
+
+        /// <summary>
+        ///     Returns the max length of an application tag.
+        /// </summary>
+        public const int MaxApplicationTagLength = 20;
+
+        /// <summary>
+        ///     Returns the max length of an application description.
+        /// </summary>
+        public const int MaxApplicationDescriptionLength = 400;
     }
 }

src/Discord.Net.Core/Entities/Applications/IApplication.cs

@@ -36,13 +36,13 @@ namespace Discord
         /// </summary>
         string IconUrl { get; }
         /// <summary>
-        ///     Gets if the bot is public.
+        ///     Gets if the bot is public. <see langword="null" /> if not set.
         /// </summary>
-        bool IsBotPublic { get; }
+        bool? IsBotPublic { get; }
         /// <summary>
-        ///     Gets if the bot requires code grant.
+        ///     Gets if the bot requires code grant. <see langword="null" /> if not set.
         /// </summary>
-        bool BotRequiresCodeGrant { get; }
+        bool? BotRequiresCodeGrant { get; }
         /// <summary>
         ///     Gets the team associated with this application if there is one.
         /// </summary>
@@ -75,5 +75,24 @@ namespace Discord
         /// </summary>
         public string VerifyKey { get; }
 
+        /// <summary>
+        ///     Gets the partial guild object of the application's developer's support server. <see langword="null" /> if not set.
+        /// </summary>
+        public PartialGuild Guild { get; }
+
+        /// <summary>
+        ///     Gets the redirect uris configured for the application.
+        /// </summary>
+        public IReadOnlyCollection<string> RedirectUris { get;}
+
+        /// <summary>
+        ///      Gets application's interactions endpoint url. <see langword="null" /> if not set.
+        /// </summary>
+        public string InteractionsEndpointUrl { get; }
+
+        /// <summary>
+        ///     Gets the approximate count of the guild the application was added to. <see langword="null" /> if not returned.
+        /// </summary>
+        public int? ApproximateGuildCount { get; }
     }
 }

src/Discord.Net.Core/Entities/Applications/ModifyApplicationProperties.cs

@@ -0,0 +1,32 @@
+namespace Discord;
+
+/// <summary>
+///     Represents properties used to modify current application's bot.
+/// </summary>
+public class ModifyApplicationProperties
+{
+    /// <summary>
+    ///     Gets or sets the http interactions endpoint configured for the application.     
+    /// </summary>
+    public Optional<string> InteractionsEndpointUrl { get; set; }
+
+    /// <summary>
+    ///     Gets or sets the role connections verification endpoint configured for the application.
+    /// </summary>
+    public Optional<string> RoleConnectionsEndpointUrl { get; set; }
+
+    /// <summary>
+    ///     Gets or sets the description of the application.
+    /// </summary>
+    public Optional<string> Description { get; set; }
+
+    /// <summary>
+    ///     Gets or sets application's tags
+    /// </summary>
+    public Optional<string[]> Tags { get; set; }
+
+    /// <summary>
+    ///     Gets or sets the icon of the application.
+    /// </summary>
+    public Optional<Image?> Icon { get; set; }
+}

src/Discord.Net.Core/Entities/Guilds/PartialGuild.cs

@@ -2,13 +2,19 @@ using System;
 
 namespace Discord;
 
-public class InviteGuild : ISnowflakeEntity
+/// <summary>
+///     Represents a partial guild object.
+/// </summary>
+/// <remarks>
+///     Most of the fields can have <see langword="null" /> value.
+/// </remarks>
+public class PartialGuild : ISnowflakeEntity
 {
     /// <inheritdoc />
     public DateTimeOffset CreatedAt => SnowflakeUtils.FromSnowflake(Id);
 
     /// <inheritdoc/>
-    public ulong Id { get; private set; }
+    public ulong Id { get; internal set; }
 
     /// <summary>
     ///     Gets the name of this guild.
@@ -16,7 +22,7 @@ public class InviteGuild : ISnowflakeEntity
     /// <returns>
     ///     A string containing the name of this guild.
     /// </returns>
-    public string Name { get; private set; }
+    public string Name { get; internal set; }
 
     /// <summary>
     ///     Gets the description for the guild.
@@ -24,7 +30,7 @@ public class InviteGuild : ISnowflakeEntity
     /// <returns>
     ///     The description for the guild; <see langword="null" /> if none is set.
     /// </returns>
-    public string Description { get; private set; }
+    public string Description { get; internal set; }
 
     /// <summary>
     ///     Gets the ID of this guild's splash image.
@@ -32,7 +38,7 @@ public class InviteGuild : ISnowflakeEntity
     /// <returns>
     ///     An identifier for the splash image; <see langword="null" /> if none is set.
     /// </returns>
-    public string SplashId { get; private set; }
+    public string SplashId { get; internal set; }
 
     /// <summary>
     ///     Gets the URL of this guild's splash image.
@@ -48,7 +54,7 @@ public class InviteGuild : ISnowflakeEntity
     /// <returns>
     ///     An identifier for the banner image; <see langword="null" /> if none is set.
     /// </returns>
-    public string BannerId { get; private set; }
+    public string BannerId { get; internal set; }
 
     /// <summary>
     ///     Gets the URL of this guild's banner image.
@@ -64,7 +70,7 @@ public class InviteGuild : ISnowflakeEntity
     /// <returns>
     ///     A flags enum containing all the features for the guild.
     /// </returns>
-    public GuildFeatures Features { get; private set; }
+    public GuildFeatures Features { get; internal set; }
 
     /// <summary>
     ///     Gets the ID of this guild's icon.
@@ -72,7 +78,7 @@ public class InviteGuild : ISnowflakeEntity
     /// <returns>
     ///     An identifier for the splash image; <see langword="null" /> if none is set.
     /// </returns>
-    public string IconId { get; private set; }
+    public string IconId { get; internal set; }
 
     /// <summary>
     ///     Gets the URL of this guild's icon.
@@ -87,9 +93,9 @@ public class InviteGuild : ISnowflakeEntity
     ///     Gets the level of requirements a user must fulfill before being allowed to post messages in this guild.
     /// </summary>
     /// <returns>
-    ///     The level of requirements.
+    ///     The level of requirements. <see langword="null" /> if none is was returned.
     /// </returns>
-    public VerificationLevel VerificationLevel { get; private set; }
+    public VerificationLevel? VerificationLevel { get; internal set; }
 
     /// <summary>
     ///     Gets the code for this guild's vanity invite URL.
@@ -97,7 +103,7 @@ public class InviteGuild : ISnowflakeEntity
     /// <returns>
     ///     A string containing the vanity invite code for this guild; <see langword="null" /> if none is set.
     /// </returns>
-    public string VanityURLCode { get; private set; }
+    public string VanityURLCode { get; internal set; }
 
     /// <summary>
     ///     Gets the number of premium subscribers of this guild.
@@ -106,17 +112,17 @@ public class InviteGuild : ISnowflakeEntity
     ///     This is the number of users who have boosted this guild.
     /// </remarks>
     /// <returns>
-    ///     The number of premium subscribers of this guild; 
+    ///     The number of premium subscribers of this guild; <see langword="null" /> if none was returned.
     /// </returns>
-    public int PremiumSubscriptionCount { get; private set; }
+    public int? PremiumSubscriptionCount { get; internal set; }
 
     /// <summary>
     ///     Gets the NSFW level of this guild.
     /// </summary>
     /// <returns>
-    ///     The NSFW level of this guild.
+    ///     The NSFW level of this guild. <see langword="null" /> if none was returned.
     /// </returns>
-    public NsfwLevel NsfwLevel { get; private set; }
+    public NsfwLevel? NsfwLevel { get; internal set; }
 
     /// <summary>
     ///     Gets the Welcome Screen of this guild
@@ -124,33 +130,18 @@ public class InviteGuild : ISnowflakeEntity
     /// <returns>
     ///     The welcome screen of this guild. <see langword="null" /> if none is set.
     /// </returns>
-    public WelcomeScreen WelcomeScreen { get; private set; }
+    public WelcomeScreen WelcomeScreen { get; internal set; }
+
+    /// <summary>
+    ///     Gets the approximate member count in the guild. <see langword="null" /> if none was returned.
+    /// </summary>
+    public int? ApproximateMemberCount { get; internal set; }
+
+    /// <summary>
+    ///     Gets the approximate presence count in the guild.<see langword="null" /> if none was returned.
+    /// </summary>
+    public int? ApproximatePresenceCount { get; internal set; }
+
+    internal PartialGuild() { }
 
-    internal InviteGuild(
-        ulong id,
-        string name,
-        string description,
-        string splashId,
-        string bannerId,
-        GuildFeatures features,
-        string iconId,
-        VerificationLevel verificationLevel,
-        string vanityURLCode,
-        int premiumSubscriptionCount,
-        NsfwLevel nsfwLevel,
-        WelcomeScreen welcomeScreen)
-    {
-        Id = id;
-        Name = name;
-        Description = description;
-        SplashId = splashId;
-        BannerId = bannerId;
-        Features = features;
-        IconId = iconId;
-        VerificationLevel = verificationLevel;
-        VanityURLCode = vanityURLCode;
-        PremiumSubscriptionCount = premiumSubscriptionCount;
-        NsfwLevel = nsfwLevel;
-        WelcomeScreen = welcomeScreen;
-    }
 }

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

@@ -14,10 +14,12 @@ namespace Discord.API
         public ulong Id { get; set; }
         [JsonProperty("icon")]
         public string Icon { get; set; }
+
         [JsonProperty("bot_public")]
-        public bool IsBotPublic { get; set; }
+        public Optional<bool> IsBotPublic { get; set; }
         [JsonProperty("bot_require_code_grant")]
-        public bool BotRequiresCodeGrant { get; set; }
+        public Optional<bool> BotRequiresCodeGrant { get; set; }
+
         [JsonProperty("install_params")]
         public Optional<InstallParams> InstallParams { get; set; }
         [JsonProperty("team")]
@@ -28,8 +30,20 @@ namespace Discord.API
         public Optional<User> Owner { get; set; }
         [JsonProperty("tags")]
         public Optional<string[]> Tags { get; set; }
+
+        [JsonProperty("verify_key")]
+        public string VerifyKey { get; set; }
+
+        [JsonProperty("approximate_guild_count")]
+        public Optional<int> ApproximateGuildCount { get; set; }
+
+        [JsonProperty("guild")]
+        public Optional<PartialGuild> PartialGuild { get; set; }
+
+        /// Urls
         [JsonProperty("terms_of_service_url")]
         public string TermsOfService { get; set; }
+
         [JsonProperty("privacy_policy_url")]
         public string PrivacyPolicy { get; set; }
 
@@ -39,7 +53,11 @@ namespace Discord.API
         [JsonProperty("role_connections_verification_url")]
         public Optional<string> RoleConnectionsUrl { get; set; }
 
-        [JsonProperty("verify_key")]
+        [JsonProperty("interactions_endpoint_url")]
-        public string VerifyKey { get; set; }
+        public Optional<string> InteractionsEndpointUrl { get; set; }
+
+        [JsonProperty("redirect_uris")]
+        public Optional<string[]> RedirectUris { get; set; }
+
     }
 }

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

@@ -9,7 +9,7 @@ namespace Discord.API
         public string Code { get; set; }
 
         [JsonProperty("guild")]
-        public Optional<InviteGuild> Guild { get; set; }
+        public Optional<PartialGuild> Guild { get; set; }
 
         [JsonProperty("channel")]
         public InviteChannel Channel { get; set; }

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

@@ -2,7 +2,7 @@ using Newtonsoft.Json;
 
 namespace Discord.API
 {
-    internal class InviteGuild
+    internal class PartialGuild
     {
         [JsonProperty("id")]
         public ulong Id { get; set; }
@@ -23,10 +23,10 @@ namespace Discord.API
         public Optional<string> IconHash { get; set; }
 
         [JsonProperty("features")]
-        public GuildFeatures Features { get; set; }
+        public Optional<GuildFeatures> Features { get; set; }
 
         [JsonProperty("verification_level")]
-        public VerificationLevel VerificationLevel { get; set; }
+        public Optional<VerificationLevel> VerificationLevel { get; set; }
 
         [JsonProperty("vanity_url_code")]
         public Optional<string> VanityUrlCode { get; set; }
@@ -38,9 +38,16 @@ namespace Discord.API
         public Optional<bool?> Nsfw { get; set; }
 
         [JsonProperty("nsfw_level")]
-        public NsfwLevel NsfwLevel { get; set; }
+        public Optional<NsfwLevel> NsfwLevel { get; set; }
 
         [JsonProperty("welcome_screen")]
         public Optional<WelcomeScreen> WelcomeScreen { get; set; }
+
+        [JsonProperty("approximate_member_count")]
+        public Optional<int> ApproximateMemberCount { get; set; }
+
+        [JsonProperty("approximate_presence_count")]
+        public Optional<int> ApproximatePresenceCount { get; set; }
+
     }
 }

src/Discord.Net.Rest/API/Rest/ModifyCurrentApplicationBotParams.cs

@@ -0,0 +1,21 @@
+using Newtonsoft.Json;
+
+namespace Discord.API.Rest;
+
+internal class ModifyCurrentApplicationBotParams
+{
+    [JsonProperty("interactions_endpoint_url")]
+    public Optional<string> InteractionsEndpointUrl { get; set; }
+
+    [JsonProperty("role_connections_verification_url")]
+    public Optional<string> RoleConnectionsEndpointUrl { get; set; }
+
+    [JsonProperty("description")]
+    public Optional<string> Description { get; set; }
+
+    [JsonProperty("tags")]
+    public Optional<string[]> Tags { get; set; }
+
+    [JsonProperty("icon")]
+    public Optional<Image?> Icon { get; set; }
+}

src/Discord.Net.Rest/ClientHelper.cs

@@ -17,6 +17,34 @@ namespace Discord.Rest
             return RestApplication.Create(client, model);
         }
 
+        public static async Task<RestApplication> GetCurrentBotApplicationAsync(BaseDiscordClient client, RequestOptions options)
+        {
+            var model = await client.ApiClient.GetCurrentBotApplicationAsync(options).ConfigureAwait(false);
+            return RestApplication.Create(client, model);
+        }
+
+        public static async Task<API.Application> ModifyCurrentBotApplicationAsync(BaseDiscordClient client, Action<ModifyApplicationProperties> func, RequestOptions options)
+        {
+            var args = new ModifyApplicationProperties();
+            func(args);
+
+            if(args.Tags.IsSpecified)
+                foreach (var tag in args.Tags.Value)
+                    Preconditions.AtMost(tag.Length, DiscordConfig.MaxApplicationTagLength, nameof(args.Tags), $"An application tag must have length less or equal to {DiscordConfig.MaxApplicationTagLength}");
+
+            if(args.Description.IsSpecified)
+                Preconditions.AtMost(args.Description.Value.Length, DiscordConfig.MaxApplicationDescriptionLength, nameof(args.Description), $"An application description tag mus have length less or equal to {DiscordConfig.MaxApplicationDescriptionLength}");
+
+            return await client.ApiClient.ModifyCurrentBotApplicationAsync(new()
+            {
+                Description = args.Description,
+                Tags = args.Tags,
+                Icon = args.Icon.IsSpecified ? args.Icon.Value?.ToModel() : Optional<API.Image?>.Unspecified,
+                InteractionsEndpointUrl = args.InteractionsEndpointUrl,
+                RoleConnectionsEndpointUrl = args.RoleConnectionsEndpointUrl,
+            }, options);
+        }
+
         public static async Task<RestChannel> GetChannelAsync(BaseDiscordClient client,
             ulong id, RequestOptions options)
         {

src/Discord.Net.Rest/DiscordRestApiClient.cs

@@ -2282,11 +2282,27 @@ namespace Discord.API
 
             return await SendAsync<IReadOnlyCollection<UserGuild>>("GET", () => $"users/@me/guilds?limit={limit}&after={afterGuildId}&with_counts=true", new BucketIds(), options: options).ConfigureAwait(false);
         }
+
         public async Task<Application> GetMyApplicationAsync(RequestOptions options = null)
         {
             options = RequestOptions.CreateOrClone(options);
             return await SendAsync<Application>("GET", () => "oauth2/applications/@me", new BucketIds(), options: options).ConfigureAwait(false);
         }
+
+        public async Task<Application> GetCurrentBotApplicationAsync(RequestOptions options = null)
+        {
+            options = RequestOptions.CreateOrClone(options);
+            return await SendAsync<Application>("GET", () => "applications/@me", new BucketIds(), options: options).ConfigureAwait(false);
+        }
+
+        public async Task<Application> ModifyCurrentBotApplicationAsync(ModifyCurrentApplicationBotParams args, RequestOptions options = null)
+        {
+            Preconditions.NotNull(args, nameof(args));
+            options = RequestOptions.CreateOrClone(options);
+
+            return await SendJsonAsync<Application>("PATCH", () => "applications/@me", args, new BucketIds(), options: options);
+        }
+
         public async Task<User> ModifySelfAsync(Rest.ModifyCurrentUserParams args, RequestOptions options = null)
         {
             Preconditions.NotNull(args, nameof(args));

src/Discord.Net.Rest/DiscordRestClient.cs

@@ -19,6 +19,8 @@ namespace Discord.Rest
     {
         #region DiscordRestClient
         private RestApplication _applicationInfo;
+        private RestApplication _currentBotApplication;
+
         internal static JsonSerializer Serializer = new JsonSerializer() { ContractResolver = new DiscordContractResolver(), NullValueHandling = NullValueHandling.Include };
 
         /// <summary>
@@ -170,6 +172,22 @@ namespace Discord.Rest
             return _applicationInfo ??= await ClientHelper.GetApplicationInfoAsync(this, options).ConfigureAwait(false);
         }
 
+        public async Task<RestApplication> GetCurrentBotInfoAsync(RequestOptions options = null)
+        {
+            return _currentBotApplication = await ClientHelper.GetCurrentBotApplicationAsync(this, options);
+        }
+
+        public async Task<RestApplication> ModifyCurrentBotApplicationAsync(Action<ModifyApplicationProperties> args, RequestOptions options = null)
+        {
+            var model = await ClientHelper.ModifyCurrentBotApplicationAsync(this, args, options);
+
+            if (_currentBotApplication is null)
+                _currentBotApplication = RestApplication.Create(this, model);
+            else
+                _currentBotApplication.Update(model);
+            return _currentBotApplication;
+        }
+
         public Task<RestChannel> GetChannelAsync(ulong id, RequestOptions options = null)
             => ClientHelper.GetChannelAsync(this, id, options);
         public Task<IReadOnlyCollection<IRestPrivateChannel>> GetPrivateChannelsAsync(RequestOptions options = null)

src/Discord.Net.Rest/Entities/Invites/RestInvite.cs

@@ -36,7 +36,7 @@ namespace Discord.Rest
         /// <returns>
         ///     A partial guild object representing the guild that the invite points to.
         /// </returns>
-        public InviteGuild InviteGuild { get; private set; }
+        public PartialGuild PartialGuild { get; private set; }
 
         /// <inheritdoc cref="IInvite.Application" />
         public RestApplication Application { get; private set; }
@@ -85,28 +85,7 @@ namespace Discord.Rest
 
             if (model.Guild.IsSpecified)
             {
-                InviteGuild = new InviteGuild
+                PartialGuild = PartialGuildExtensions.Create(model.Guild.Value);
-                (model.Guild.Value.Id,
-                    model.Guild.Value.Name,
-                    model.Guild.Value.Description.IsSpecified ? model.Guild.Value.Description.Value : null,
-                    model.Guild.Value.Splash.IsSpecified ? model.Guild.Value.Splash.Value : null,
-                    model.Guild.Value.BannerHash.IsSpecified ? model.Guild.Value.BannerHash.Value : null,
-                    model.Guild.Value.Features,
-                    model.Guild.Value.IconHash.IsSpecified ? model.Guild.Value.IconHash.Value : null,
-                    model.Guild.Value.VerificationLevel,
-                    model.Guild.Value.VanityUrlCode.IsSpecified ? model.Guild.Value.VanityUrlCode.Value : null,
-                    model.Guild.Value.PremiumSubscriptionCount.GetValueOrDefault(0),
-                    model.Guild.Value.NsfwLevel,
-                    model.Guild.Value.WelcomeScreen.IsSpecified
-                        ? new WelcomeScreen(
-                            model.Guild.Value.WelcomeScreen.Value.Description.IsSpecified ? model.Guild.Value.WelcomeScreen.Value.Description.Value : null,
-                            model.Guild.Value.WelcomeScreen.Value.WelcomeChannels.Select(ch =>
-                                new WelcomeScreenChannel(
-                                    ch.ChannelId,
-                                    ch.Description,
-                                    ch.EmojiName.IsSpecified ? ch.EmojiName.Value : null,
-                                    ch.EmojiId.IsSpecified ? ch.EmojiId.Value : null)).ToImmutableArray())
-                        : null);
             }
 
             if(model.Application.IsSpecified)

src/Discord.Net.Rest/Entities/RestApplication.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Collections.Immutable;
 using System.Diagnostics;
 using System.Threading.Tasks;
+
 using Model = Discord.API.Application;
 
 namespace Discord.Rest
@@ -24,9 +25,9 @@ namespace Discord.Rest
         /// <inheritdoc />
         public ApplicationFlags Flags { get; private set; }
         /// <inheritdoc />
-        public bool IsBotPublic { get; private set; }
+        public bool? IsBotPublic { get; private set; }
         /// <inheritdoc />
-        public bool BotRequiresCodeGrant { get; private set; }
+        public bool? BotRequiresCodeGrant { get; private set; }
         /// <inheritdoc />
         public ITeam Team { get; private set; }
         /// <inheritdoc />
@@ -48,6 +49,18 @@ namespace Discord.Rest
         /// <inheritdoc />
         public string IconUrl => CDN.GetApplicationIconUrl(Id, _iconId);
 
+        /// <inheritdoc />
+        public PartialGuild Guild { get; private set; }
+
+        /// <inheritdoc />
+        public int? ApproximateGuildCount { get; private set; }
+
+        /// <inheritdoc />
+        public IReadOnlyCollection<string> RedirectUris { get; private set; }
+
+        /// <inheritdoc />
+        public string InteractionsEndpointUrl { get; private set; }
+
         public ApplicationInstallParams InstallParams { get; private set; }
 
         public IReadOnlyCollection<string> Tags { get; private set; }
@@ -68,13 +81,13 @@ namespace Discord.Rest
             RPCOrigins = model.RPCOrigins.IsSpecified ? model.RPCOrigins.Value.ToImmutableArray() : ImmutableArray<string>.Empty;
             Name = model.Name;
             _iconId = model.Icon;
-            IsBotPublic = model.IsBotPublic;
+            IsBotPublic = model.IsBotPublic.IsSpecified ? model.IsBotPublic.Value : null;
-            BotRequiresCodeGrant = model.BotRequiresCodeGrant;
+            BotRequiresCodeGrant = model.BotRequiresCodeGrant.IsSpecified ? model.BotRequiresCodeGrant.Value : null;
             Tags = model.Tags.GetValueOrDefault(null)?.ToImmutableArray() ?? ImmutableArray<string>.Empty;
             PrivacyPolicy = model.PrivacyPolicy;
             TermsOfService = model.TermsOfService;
             var installParams = model.InstallParams.GetValueOrDefault(null);
-            InstallParams = new ApplicationInstallParams(installParams?.Scopes ?? new string[0], (GuildPermission?)installParams?.Permission ?? null);
+            InstallParams = new ApplicationInstallParams(installParams?.Scopes ?? Array.Empty<string>(), (GuildPermission?)installParams?.Permission);
 
             if (model.Flags.IsSpecified)
                 Flags = model.Flags.Value;
@@ -86,6 +99,16 @@ namespace Discord.Rest
             CustomInstallUrl = model.CustomInstallUrl.IsSpecified ? model.CustomInstallUrl.Value : null;
             RoleConnectionsVerificationUrl = model.RoleConnectionsUrl.IsSpecified ? model.RoleConnectionsUrl.Value : null;
             VerifyKey = model.VerifyKey;
+
+            if (model.PartialGuild.IsSpecified)
+                Guild = PartialGuildExtensions.Create(model.PartialGuild.Value);
+
+            InteractionsEndpointUrl = model.InteractionsEndpointUrl.IsSpecified ? model.InteractionsEndpointUrl.Value : null;
+
+            if (model.RedirectUris.IsSpecified)
+                RedirectUris = model.RedirectUris.Value.ToImmutableArray();
+
+            ApproximateGuildCount = model.ApproximateGuildCount.IsSpecified ? model.ApproximateGuildCount.Value : null;
         }
 
         /// <exception cref="InvalidOperationException">Unable to update this object from a different application token.</exception>

src/Discord.Net.Rest/Extensions/PartialGuildExtensions.cs

@@ -0,0 +1,35 @@
+using System.Collections.Immutable;
+using System.Linq;
+
+namespace Discord.Rest;
+
+internal static class PartialGuildExtensions
+{
+    public static PartialGuild Create(API.PartialGuild model)
+        => new PartialGuild
+        {
+            Id = model.Id,
+            Name = model.Name,
+            Description = model.Description.IsSpecified ? model.Description.Value : null,
+            SplashId = model.Splash.IsSpecified ? model.Splash.Value : null,
+            BannerId = model.BannerHash.IsSpecified ? model.BannerHash.Value : null,
+            Features = model.Features.IsSpecified ? model.Features.Value : null,
+            IconId = model.IconHash.IsSpecified ? model.IconHash.Value : null,
+            VerificationLevel = model.VerificationLevel.IsSpecified ? model.VerificationLevel.Value : null,
+            VanityURLCode = model.VanityUrlCode.IsSpecified ? model.VanityUrlCode.Value : null,
+            PremiumSubscriptionCount = model.PremiumSubscriptionCount.IsSpecified ? model.PremiumSubscriptionCount.Value : null,
+            NsfwLevel = model.NsfwLevel.IsSpecified ? model.NsfwLevel.Value : null,
+            WelcomeScreen = model.WelcomeScreen.IsSpecified
+                ? new WelcomeScreen(
+                    model.WelcomeScreen.Value.Description.IsSpecified ? model.WelcomeScreen.Value.Description.Value : null,
+                    model.WelcomeScreen.Value.WelcomeChannels.Select(ch =>
+                        new WelcomeScreenChannel(
+                            ch.ChannelId,
+                            ch.Description,
+                            ch.EmojiName.IsSpecified ? ch.EmojiName.Value : null,
+                            ch.EmojiId.IsSpecified ? ch.EmojiId.Value : null)).ToImmutableArray())
+                : null,
+            ApproximateMemberCount = model.ApproximateMemberCount.IsSpecified ? model.ApproximateMemberCount.Value : null,
+            ApproximatePresenceCount = model.ApproximatePresenceCount.IsSpecified ? model.ApproximatePresenceCount.Value : null
+        };
+}