feat: add basic premium scaffolding

PluralKit.Bot/BotConfig.cs

@@ -36,6 +36,10 @@ public class BotConfig
     public bool IsBetaBot { get; set; } = false!;
     public string BetaBotAPIUrl { get; set; }
 
+    public String? PremiumSubscriberEmoji { get; set; }
+    public String? PremiumLifetimeEmoji { get; set; }
+    public String? PremiumDashboardUrl { get; set; }
+
     public record ClusterSettings
     {
         // this is zero-indexed

PluralKit.Bot/CommandMeta/CommandTree.cs

@@ -92,6 +92,7 @@ public partial class CommandTree
         if (ctx.Match("sus")) return ctx.Execute<Fun>(null, m => m.Sus(ctx));
         if (ctx.Match("error")) return ctx.Execute<Fun>(null, m => m.Error(ctx));
         if (ctx.Match("stats", "status")) return ctx.Execute<Misc>(null, m => m.Stats(ctx));
+        if (ctx.Match("premium")) return ctx.Execute<Misc>(null, m => m.Premium(ctx));
         if (ctx.Match("permcheck"))
             return ctx.Execute<Checks>(PermCheck, m => m.PermCheckGuild(ctx));
         if (ctx.Match("proxycheck"))

PluralKit.Bot/CommandSystem/Context/Context.cs

@@ -28,6 +28,8 @@ public class Context
 
     private Command? _currentCommand;
 
+    private BotConfig _botConfig;
+
     public Context(ILifetimeScope provider, int shardId, Guild? guild, Channel channel, MessageCreateEvent message,
                                                     int commandParseOffset, PKSystem senderSystem, SystemConfig config,
                                                     GuildConfig? guildConfig, string[] prefixes)
@@ -46,6 +48,7 @@ public class Context
         _metrics = provider.Resolve<IMetrics>();
         _provider = provider;
         _commandMessageService = provider.Resolve<CommandMessageService>();
+        _botConfig = provider.Resolve<BotConfig>();
         CommandPrefix = message.Content?.Substring(0, commandParseOffset);
         DefaultPrefix = prefixes[0];
         Parameters = new Parameters(message.Content?.Substring(commandParseOffset));
@@ -74,6 +77,23 @@ public class Context
     public readonly SystemConfig Config;
     public DateTimeZone Zone => Config?.Zone ?? DateTimeZone.Utc;
 
+    public bool Premium
+    {
+        get
+        {
+            if (Config?.PremiumLifetime ?? false) return true;
+            // generate _this_ current instant _before_ the check, otherwise it will always be true...
+            var premiumUntil = Config?.PremiumUntil ?? SystemClock.Instance.GetCurrentInstant();
+            return SystemClock.Instance.GetCurrentInstant() < premiumUntil;
+        }
+    }
+
+    public string PremiumEmoji => (Config?.PremiumLifetime ?? false)
+        ? ($"<:lifetime_premium:{_botConfig.PremiumLifetimeEmoji}>" ?? "\u2729")
+        : Premium
+            ? ($"<:premium_subscriber:{_botConfig.PremiumSubscriberEmoji}>" ?? "\u2729")
+            : "";
+
     public readonly string CommandPrefix;
     public readonly string DefaultPrefix;
     public readonly Parameters Parameters;

PluralKit.Bot/Commands/Misc.cs

@@ -31,6 +31,32 @@ public class Misc
         _shards = shards;
     }
 
+    public async Task Premium(Context ctx)
+    {
+        ctx.CheckSystem();
+
+        String message;
+
+        if (ctx.Config?.PremiumLifetime ?? false)
+        {
+            message = $"Your system has lifetime PluralKit Premium. {ctx.PremiumEmoji} Thanks for the support!";
+        }
+        else if (ctx.Premium)
+        {
+            message = $"Your system has PluralKit Premium active until <t:{ctx.Config.PremiumUntil?.ToUnixTimeSeconds()}>. {ctx.PremiumEmoji} Thanks for the support!";
+        }
+        else
+        {
+            message = "PluralKit Premium is not currently active for your system.";
+            if (ctx.Config?.PremiumUntil != null)
+            {
+                message += $" The subscription expired at <t:{ctx.Config.PremiumUntil?.ToUnixTimeSeconds()}> (<t:{ctx.Config.PremiumUntil?.ToUnixTimeSeconds()}:R>)";
+            }
+        }
+
+        await ctx.Reply(message + $"\n\nManage your subscription at <{_botConfig.PremiumDashboardUrl}>");
+    }
+
     public async Task Invite(Context ctx)
     {
         var permissions =

PluralKit.Bot/Services/EmbedService.cs

@@ -21,14 +21,16 @@ public class EmbedService
     private readonly IDatabase _db;
     private readonly ModelRepository _repo;
     private readonly DiscordApiClient _rest;
+    private readonly BotConfig _config;
     private readonly CoreConfig _coreConfig;
 
-    public EmbedService(IDatabase db, ModelRepository repo, IDiscordCache cache, DiscordApiClient rest, CoreConfig coreConfig)
+    public EmbedService(IDatabase db, ModelRepository repo, IDiscordCache cache, DiscordApiClient rest, BotConfig config, CoreConfig coreConfig)
     {
         _db = db;
         _repo = repo;
         _cache = cache;
         _rest = rest;
+        _config = config;
         _coreConfig = coreConfig;
     }
 
@@ -192,7 +194,7 @@ public class EmbedService
                     new MessageComponent()
                     {
                         Type = ComponentType.Text,
-                        Content = $"-# System ID: `{system.DisplayHid(cctx.Config)}`\n-# Created: {system.Created.FormatZoned(cctx.Zone)}",
+                        Content = $"-# System ID: `{system.DisplayHid(cctx.Config)}`{cctx.PremiumEmoji}\n-# Created: {system.Created.FormatZoned(cctx.Zone)}",
                     },
                 ],
                 Accessory = new MessageComponent()

PluralKit.Core/Models/SystemConfig.cs

@@ -28,6 +28,9 @@ public class SystemConfig
     public ProxySwitchAction ProxySwitch { get; }
     public string NameFormat { get; }
 
+    public bool PremiumLifetime { get; }
+    public Instant? PremiumUntil { get; }
+
     public enum HidPadFormat
     {
         None = 0,

crates/migrate/data/migrations/54.sql

@@ -0,0 +1,7 @@
+-- database version 54
+-- initial support for premium
+
+alter table system_config add column premium_until timestamp;
+alter table system_config add column premium_lifetime bool default false;
+
+update info set schema_version = 54;

crates/models/src/system_config.rs

@@ -1,3 +1,4 @@
+use chrono::NaiveDateTime;
 use pk_macros::pk_model;
 
 use sqlx::{postgres::PgTypeInfo, Database, Decode, Postgres, Type};
@@ -87,4 +88,8 @@ struct SystemConfig {
     name_format: Option<String>,
     #[json = "description_templates"]
     description_templates: Vec<String>,
+    #[json = "premium_until"]
+    premium_until: Option<NaiveDateTime>,
+    #[json = "premium_lifetime"]
+    premium_lifetime: bool
 }