- Added a simple bank system. Users can deposit, withdraw and check the balance of their currency in the bank.

- Users can't check other user's bank balances.
- Added a button on a .$ command which, when clicked, sends you a message with your bank balance that only you can see.
- Updated pagination, it now uses buttons instead of reactions
- using .h <command group> (atm only .bank is a proper group) will list commands with their descriptions in that group

CHANGELOG.md

@@ -1,3 +1,4 @@
+
 # Changelog
 
 Experimental changelog. Mostly based on [keepachangelog](https://keepachangelog.com/en/1.0.0/) except date format. a-c-f-r-o
@@ -13,6 +14,13 @@ Experimental changelog. Mostly based on [keepachangelog](https://keepachangelog.
   - Old embed format will still work
   - There shouldn't be any breaking changes
 - Added `.stondel` command which, when toggled, will make the bot delete online stream messages on the server when the stream goes offline
+- Added a simple bank system.
+  - Users can deposit, withdraw and check the balance of their currency in the bank.
+  - Users can't check other user's bank balances.
+- Added a button on a .$ command which, when clicked, sends you a message with your bank balance that only you can see.
+- Added `.h <command group>`  
+  - Using this command will list all commands in the specified group
+  - Atm only .bank is a proper group (`.h bank`)
 
 ### Changed
 

src/Nadeko.Medusa/Extensions/MedusaExtensions.cs

@@ -5,6 +5,20 @@ namespace NadekoBot;
 
 public static class MedusaExtensions
 {
+    // public static Task<IUserMessage> EmbedAsync(this IMessageChannel ch,
+    //     IEmbedBuilder embed,
+    //     string msg = "",
+    //     MessageComponent? components = null)
+    // {
+    //     return ch.SendMessageAsync(msg,
+    //         embed: embed.Build(),
+    //         components: components,
+    //         options: new()
+    //         {
+    //             RetryMode = RetryMode.AlwaysRetry
+    //         });
+    // }
+
     public static Task<IUserMessage> EmbedAsync(this IMessageChannel ch,
         IEmbedBuilder embed,
         string msg = "",
@@ -37,7 +51,7 @@ public static class MedusaExtensions
     public static Task<IUserMessage> SendErrorAsync(this AnyContext ctx, string msg)
         => ctx.Channel.SendErrorAsync(ctx, msg);
 
-    // localized
+    // reaction responses
     public static Task ConfirmAsync(this AnyContext ctx)
         => ctx.Message.AddReactionAsync(new Emoji("✅"));
 
@@ -50,6 +64,7 @@ public static class MedusaExtensions
     public static Task WaitAsync(this AnyContext ctx)
         => ctx.Message.AddReactionAsync(new Emoji("🤔"));
 
+    // localized
     public static Task<IUserMessage> ErrorLocalizedAsync(this AnyContext ctx, string key, params object[]? args)
         => ctx.SendErrorAsync(ctx.GetText(key));
 

src/NadekoBot/Common/NadekoInteractionBase.cs

@@ -0,0 +1,80 @@
+namespace NadekoBot;
+
+
+public abstract class NadekoInteraction
+{
+    // improvements:
+    //  - state in OnAction
+    //  - configurable delay
+    //  - 
+    public abstract string Name { get; }
+    public abstract IEmote Emote { get; }
+    public Func<SocketMessageComponent, Task> OnAction { get; }
+
+    protected readonly DiscordSocketClient _client;
+
+    protected readonly TaskCompletionSource<bool> _interactionCompletedSource;
+
+    protected ulong _authorId;
+    protected IUserMessage message;
+
+    protected NadekoInteraction(DiscordSocketClient client, ulong authorId, Func<SocketMessageComponent, Task> onAction)
+    {
+        _client = client;
+        _authorId = authorId;
+        OnAction = onAction;
+        _interactionCompletedSource = new(TaskCreationOptions.RunContinuationsAsynchronously);
+    }
+
+    public async Task RunAsync(IUserMessage msg)
+    {
+        message = msg;
+
+        _client.InteractionCreated += OnInteraction;
+        await Task.WhenAny(Task.Delay(10_000), _interactionCompletedSource.Task);
+        _client.InteractionCreated -= OnInteraction;
+
+        await msg.ModifyAsync(m => m.Components = new ComponentBuilder().Build());
+    }
+
+    private async Task OnInteraction(SocketInteraction arg)
+    {
+        if (arg is not SocketMessageComponent smc)
+            return;
+
+        if (smc.Message.Id != message.Id)
+            return;
+
+        if (smc.Data.CustomId != Name)
+            return;
+
+        if (smc.User.Id != _authorId)
+        {
+            await arg.DeferAsync();
+            return;
+        }
+
+        _ = Task.Run(async () =>
+        {
+            await OnAction(smc);
+            
+            // this should only be a thing on single-response buttons
+            _interactionCompletedSource.TrySetResult(true);
+
+            if (!smc.HasResponded)
+            {
+                await smc.DeferAsync();
+            }
+        });
+    }
+
+
+    public MessageComponent CreateComponent()
+    {
+        var comp = new ComponentBuilder()
+            .WithButton(new ButtonBuilder(style: ButtonStyle.Secondary, emote: Emote, customId: Name));
+
+        return comp.Build();
+    }
+}
+    

src/NadekoBot/Common/NadekoModule.cs

@@ -1,5 +1,6 @@
 #nullable disable
 using System.Globalization;
+using MessageType = NadekoBot.Extensions.MessageType;
 
 // ReSharper disable InconsistentNaming
 
@@ -30,19 +31,14 @@ public abstract class NadekoModule : ModuleBase
     protected string GetText(in LocStr data)
         => Strings.GetText(data, Culture);
     
-    public Task<IUserMessage> SendErrorAsync(string error)
-        => ctx.Channel.SendErrorAsync(_eb, error);
-
     public Task<IUserMessage> SendErrorAsync(
         string title,
         string error,
         string url = null,
-        string footer = null)
+        string footer = null, 
+        NadekoInteraction inter = null)
         => ctx.Channel.SendErrorAsync(_eb, title, error, url, footer);
     
-    public Task<IUserMessage> SendConfirmAsync(string text)
-        => ctx.Channel.SendConfirmAsync(_eb, text);
-
     public Task<IUserMessage> SendConfirmAsync(
         string title,
         string text,
@@ -50,25 +46,33 @@ public abstract class NadekoModule : ModuleBase
         string footer = null)
         => ctx.Channel.SendConfirmAsync(_eb, title, text, url, footer);
 
-    public Task<IUserMessage> SendPendingAsync(string text)
-        => ctx.Channel.SendPendingAsync(_eb, text);
+    // 
+    public Task<IUserMessage> SendErrorAsync(string text, NadekoInteraction inter = null)
+        => ctx.Channel.SendAsync(_eb, text, MessageType.Error, inter);
+    public Task<IUserMessage> SendConfirmAsync(string text, NadekoInteraction inter = null)
+        => ctx.Channel.SendAsync(_eb, text, MessageType.Ok, inter);
+    public Task<IUserMessage> SendPendingAsync(string text, NadekoInteraction inter = null)
+        => ctx.Channel.SendAsync(_eb, text, MessageType.Pending, inter);
 
-    public Task<IUserMessage> ErrorLocalizedAsync(LocStr str)
-        => SendErrorAsync(GetText(str));
     
-    public Task<IUserMessage> PendingLocalizedAsync(LocStr str)
-        => SendPendingAsync(GetText(str));
+    // localized normal
+    public Task<IUserMessage> ErrorLocalizedAsync(LocStr str, NadekoInteraction inter = null)
+        => SendErrorAsync(GetText(str), inter);
 
-    public Task<IUserMessage> ConfirmLocalizedAsync(LocStr str)
-        => SendConfirmAsync(GetText(str));
+    public Task<IUserMessage> PendingLocalizedAsync(LocStr str, NadekoInteraction inter = null)
+        => SendPendingAsync(GetText(str), inter);
 
-    public Task<IUserMessage> ReplyErrorLocalizedAsync(LocStr str)
+    public Task<IUserMessage> ConfirmLocalizedAsync(LocStr str, NadekoInteraction inter = null)
+        => SendConfirmAsync(GetText(str), inter);
+
+    // localized replies
+    public Task<IUserMessage> ReplyErrorLocalizedAsync(LocStr str, NadekoInteraction inter = null)
         => SendErrorAsync($"{Format.Bold(ctx.User.ToString())} {GetText(str)}");
 
-    public Task<IUserMessage> ReplyPendingLocalizedAsync(LocStr str)
+    public Task<IUserMessage> ReplyPendingLocalizedAsync(LocStr str, NadekoInteraction inter = null)
         => SendPendingAsync($"{Format.Bold(ctx.User.ToString())} {GetText(str)}");
 
-    public Task<IUserMessage> ReplyConfirmLocalizedAsync(LocStr str)
+    public Task<IUserMessage> ReplyConfirmLocalizedAsync(LocStr str, NadekoInteraction inter = null)
         => SendConfirmAsync($"{Format.Bold(ctx.User.ToString())} {GetText(str)}");
 
     public async Task<bool> PromptUserConfirmAsync(IEmbedBuilder embed)

src/NadekoBot/Db/Models/BankUser.cs

@@ -0,0 +1,9 @@
+using NadekoBot.Services.Database.Models;
+
+namespace NadekoBot.Db.Models;
+
+public class BankUser : DbEntity
+{
+    public ulong UserId { get; set; }
+    public long Balance { get; set; }
+}

src/NadekoBot/Db/NadekoContext.cs

@@ -52,6 +52,8 @@ public abstract class NadekoContext : DbContext
 
     public DbSet<Permissionv2> Permissions { get; set; }
     
+    public DbSet<BankUser> BankUsers { get; set; }
+
     #region Mandatory Provider-Specific Values
 
     protected abstract string CurrencyTransactionOtherIdDefaultValue { get; }
@@ -402,6 +404,12 @@ public abstract class NadekoContext : DbContext
             x.ChannelId,
             x.UserId
         }));
+
+        #region BANK
+
+        modelBuilder.Entity<BankUser>(bu => bu.HasIndex(x => x.UserId).IsUnique());
+
+        #endregion
     }
 
 #if DEBUG

src/NadekoBot/Migrations/MySql/20220429044757_bank.cs

@@ -0,0 +1,42 @@
+using System;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace NadekoBot.Migrations.Mysql
+{
+    public partial class bank : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "bankusers",
+                columns: table => new
+                {
+                    id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("MySql:ValueGenerationStrategy", MySqlValueGenerationStrategy.IdentityColumn),
+                    userid = table.Column<ulong>(type: "bigint unsigned", nullable: false),
+                    balance = table.Column<long>(type: "bigint", nullable: false),
+                    dateadded = table.Column<DateTime>(type: "datetime(6)", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("pk_bankusers", x => x.id);
+                })
+                .Annotation("MySql:CharSet", "utf8mb4");
+
+            migrationBuilder.CreateIndex(
+                name: "ix_bankusers_userid",
+                table: "bankusers",
+                column: "userid",
+                unique: true);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "bankusers");
+        }
+    }
+}

src/NadekoBot/Migrations/MySql/MysqlContextModelSnapshot.cs

@@ -19,6 +19,35 @@ namespace NadekoBot.Migrations.Mysql
                 .HasAnnotation("ProductVersion", "6.0.3")
                 .HasAnnotation("Relational:MaxIdentifierLength", 64);
 
+            modelBuilder.Entity("NadekoBot.Db.Models.BankUser", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int")
+                        .HasColumnName("id");
+
+                    b.Property<long>("Balance")
+                        .HasColumnType("bigint")
+                        .HasColumnName("balance");
+
+                    b.Property<DateTime?>("DateAdded")
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("dateadded");
+
+                    b.Property<ulong>("UserId")
+                        .HasColumnType("bigint unsigned")
+                        .HasColumnName("userid");
+
+                    b.HasKey("Id")
+                        .HasName("pk_bankusers");
+
+                    b.HasIndex("UserId")
+                        .IsUnique()
+                        .HasDatabaseName("ix_bankusers_userid");
+
+                    b.ToTable("bankusers", (string)null);
+                });
+
             modelBuilder.Entity("NadekoBot.Db.Models.ClubApplicants", b =>
                 {
                     b.Property<int>("ClubId")

src/NadekoBot/Migrations/Postgresql/20220429044808_bank.cs

@@ -0,0 +1,41 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace NadekoBot.Migrations.PostgreSql
+{
+    public partial class bank : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "bankusers",
+                columns: table => new
+                {
+                    id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    userid = table.Column<decimal>(type: "numeric(20,0)", nullable: false),
+                    balance = table.Column<long>(type: "bigint", nullable: false),
+                    dateadded = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("pk_bankusers", x => x.id);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "ix_bankusers_userid",
+                table: "bankusers",
+                column: "userid",
+                unique: true);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "bankusers");
+        }
+    }
+}

src/NadekoBot/Migrations/Postgresql/PostgreSqlContextModelSnapshot.cs

@@ -22,6 +22,37 @@ namespace NadekoBot.Migrations.PostgreSql
 
             NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
 
+            modelBuilder.Entity("NadekoBot.Db.Models.BankUser", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer")
+                        .HasColumnName("id");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<long>("Balance")
+                        .HasColumnType("bigint")
+                        .HasColumnName("balance");
+
+                    b.Property<DateTime?>("DateAdded")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("dateadded");
+
+                    b.Property<decimal>("UserId")
+                        .HasColumnType("numeric(20,0)")
+                        .HasColumnName("userid");
+
+                    b.HasKey("Id")
+                        .HasName("pk_bankusers");
+
+                    b.HasIndex("UserId")
+                        .IsUnique()
+                        .HasDatabaseName("ix_bankusers_userid");
+
+                    b.ToTable("bankusers", (string)null);
+                });
+
             modelBuilder.Entity("NadekoBot.Db.Models.ClubApplicants", b =>
                 {
                     b.Property<int>("ClubId")

src/NadekoBot/Migrations/Sqlite/20220428051304_bank.cs

@@ -0,0 +1,40 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace NadekoBot.Migrations
+{
+    public partial class bank : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "BankUsers",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    UserId = table.Column<ulong>(type: "INTEGER", nullable: false),
+                    Balance = table.Column<long>(type: "INTEGER", nullable: false),
+                    DateAdded = table.Column<DateTime>(type: "TEXT", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_BankUsers", x => x.Id);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_BankUsers_UserId",
+                table: "BankUsers",
+                column: "UserId",
+                unique: true);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "BankUsers");
+        }
+    }
+}

src/NadekoBot/Migrations/Sqlite/NadekoSqliteContextModelSnapshot.cs

@@ -17,6 +17,29 @@ namespace NadekoBot.Migrations
 #pragma warning disable 612, 618
             modelBuilder.HasAnnotation("ProductVersion", "6.0.3");
 
+            modelBuilder.Entity("NadekoBot.Db.Models.BankUser", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<long>("Balance")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime?>("DateAdded")
+                        .HasColumnType("TEXT");
+
+                    b.Property<ulong>("UserId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId")
+                        .IsUnique();
+
+                    b.ToTable("BankUsers");
+                });
+
             modelBuilder.Entity("NadekoBot.Db.Models.ClubApplicants", b =>
                 {
                     b.Property<int>("ClubId")

src/NadekoBot/Modules/Gambling/Bank/BankCommands.cs

@@ -0,0 +1,61 @@
+using NadekoBot.Modules.Gambling.Bank;
+using NadekoBot.Modules.Gambling.Common;
+using NadekoBot.Modules.Gambling.Services;
+
+namespace NadekoBot.Modules.Gambling;
+
+// todo .h [group] should show commands in that group 
+public partial class Gambling
+{
+    [Name("Bank")]
+    [Group("bank")]
+    public partial class BankCommands : GamblingModule<IBankService>
+    {
+        private readonly IBankService _bank;
+
+        public BankCommands(GamblingConfigService gcs, IBankService bank) : base(gcs)
+        {
+            _bank = bank;
+        }
+
+        [Cmd]
+        public async partial Task BankDeposit(ShmartNumber amount)
+        {
+            if (amount <= 0)
+                return;
+            
+            if (await _bank.DepositAsync(ctx.User.Id, amount))
+            {
+                await ReplyConfirmLocalizedAsync(strs.bank_deposited(N(amount)));
+            }
+            else
+            {
+                await ReplyErrorLocalizedAsync(strs.not_enough(CurrencySign));
+            }
+        }
+        
+        [Cmd]
+        public async partial Task BankWithdraw(ShmartNumber amount)
+        {
+            if (amount <= 0)
+                return;
+            
+            if (await _bank.WithdrawAsync(ctx.User.Id, amount))
+            {
+                await ReplyConfirmLocalizedAsync(strs.bank_withdrew(N(amount)));
+            }
+            else
+            {
+                await ReplyErrorLocalizedAsync(strs.bank_withdraw_insuff(CurrencySign));
+            }
+        }
+        
+        [Cmd]
+        public async partial Task BankBalance()
+        {
+            var bal = await _bank.GetBalanceAsync(ctx.User.Id);
+
+            await ReplyConfirmLocalizedAsync(strs.bank_balance(N(bal)));
+        }
+    }
+}

src/NadekoBot/Modules/Gambling/Bank/BankService.cs

@@ -0,0 +1,77 @@
+using LinqToDB;
+using LinqToDB.EntityFrameworkCore;
+
+namespace NadekoBot.Modules.Gambling.Bank;
+
+public sealed class BankService : IBankService, INService
+{
+    private readonly ICurrencyService _cur;
+    private readonly DbService _db;
+
+    public BankService(ICurrencyService cur, DbService db)
+    {
+        _cur = cur;
+        _db = db;
+    }
+
+    public async Task<bool> DepositAsync(ulong userId, long amount)
+    {
+        if (amount <= 0)
+            throw new ArgumentOutOfRangeException(nameof(amount));
+        
+        if (!await _cur.RemoveAsync(userId, amount, new("bank", "deposit")))
+            return false;
+
+        await using var ctx = _db.GetDbContext();
+        await ctx.BankUsers
+                 .ToLinqToDBTable()
+                 .InsertOrUpdateAsync(() => new()
+                     {
+                         UserId = userId,
+                         Balance = amount
+                     },
+                     (old) => new()
+                     {
+                         Balance = old.Balance + amount
+                     },
+                     () => new()
+                     {
+                         UserId = userId
+                     });
+
+        return true;
+    }
+
+    public async Task<bool> WithdrawAsync(ulong userId, long amount)
+    {
+        if (amount <= 0)
+            throw new ArgumentOutOfRangeException(nameof(amount));
+        
+        await using var ctx = _db.GetDbContext();
+        var rows = await ctx.BankUsers
+                 .ToLinqToDBTable()
+                 .Where(x => x.UserId == userId && x.Balance >= amount)
+                 .UpdateAsync((old) => new()
+                 {
+                     Balance = old.Balance - amount
+                 });
+
+        if (rows > 0)
+        {
+            await _cur.AddAsync(userId, amount, new("bank", "withdraw"));
+            return true;
+        }
+
+        return false;
+    }
+
+    public async Task<long> GetBalanceAsync(ulong userId)
+    {
+        await using var ctx = _db.GetDbContext();
+        return (await ctx.BankUsers
+                         .ToLinqToDBTable()
+                         .FirstOrDefaultAsync(x => x.UserId == userId))
+               ?.Balance
+               ?? 0;
+    }
+}

src/NadekoBot/Modules/Gambling/Bank/IBankService.cs

@@ -0,0 +1,8 @@
+namespace NadekoBot.Modules.Gambling.Bank;
+
+public interface IBankService
+{
+    Task<bool> DepositAsync(ulong userId, long amount);
+    Task<bool> WithdrawAsync(ulong userId, long amount);
+    Task<long> GetBalanceAsync(ulong userId);
+}

src/NadekoBot/Modules/Gambling/Gambling.cs

@@ -3,6 +3,7 @@ using LinqToDB;
 using LinqToDB.EntityFrameworkCore;
 using NadekoBot.Db;
 using NadekoBot.Db.Models;
+using NadekoBot.Modules.Gambling.Bank;
 using NadekoBot.Modules.Gambling.Common;
 using NadekoBot.Modules.Gambling.Services;
 using NadekoBot.Services.Currency;
@@ -40,6 +41,7 @@ public partial class Gambling : GamblingModule<GamblingService>
     private readonly NumberFormatInfo _enUsCulture;
     private readonly DownloadTracker _tracker;
     private readonly GamblingConfigService _configService;
+    private readonly IBankService _bank;
 
     private IUserMessage rdMsg;
 
@@ -49,13 +51,16 @@ public partial class Gambling : GamblingModule<GamblingService>
         IDataCache cache,
         DiscordSocketClient client,
         DownloadTracker tracker,
-        GamblingConfigService configService)
+        GamblingConfigService configService,
+        IBankService bank)
         : base(configService)
     {
         _db = db;
         _cs = currency;
         _cache = cache;
         _client = client;
+        _bank = bank;
+        
         _enUsCulture = new CultureInfo("en-US", false).NumberFormat;
         _enUsCulture.NumberDecimalDigits = 0;
         _enUsCulture.NumberGroupSeparator = " ";
@@ -312,6 +317,31 @@ public partial class Gambling : GamblingModule<GamblingService>
             _ => $"{type.Titleize()} - {subType.Titleize()}"
         };
 
+
+    public sealed class CashInteraction : NadekoInteraction
+    {
+        public override string Name
+            => "CASH_OPEN_BANK";
+
+        public override IEmote Emote
+            => new Emoji("🏦");
+
+        public CashInteraction(
+            [NotNull] DiscordSocketClient client,
+            ulong authorId,
+            Func<SocketMessageComponent, Task> onAction)
+            : base(client, authorId, onAction)
+        {
+            
+        }
+
+        public static CashInteraction Create(
+            DiscordSocketClient client,
+            ulong userId,
+            Func<SocketMessageComponent, Task> onAction)
+            => new(client, userId, onAction);
+    }
+    
     [Cmd]
     [Priority(0)]
     public async partial Task Cash(ulong userId)
@@ -320,15 +350,31 @@ public partial class Gambling : GamblingModule<GamblingService>
         await ReplyConfirmLocalizedAsync(strs.has(Format.Code(userId.ToString()), cur));
     }
     
+    private async Task BankAction(SocketMessageComponent smc)
+    {
+        var balance = await _bank.GetBalanceAsync(ctx.User.Id);
+        await smc.RespondAsync(GetText(strs.bank_balance(N(balance))), ephemeral: true);
+    }
+    
     [Cmd]
     [Priority(1)]
     public async partial Task Cash([Leftover] IUser user = null)
     {
         user ??= ctx.User;
         var cur = await GetBalanceStringAsync(user.Id);
+
+        if (user == ctx.User)
+        {
+            var inter = CashInteraction.Create(_client, ctx.User.Id, BankAction);
+            await ConfirmLocalizedAsync(strs.has(Format.Bold(user.ToString()), cur), inter);
+        }
+        else
+        {
             await ConfirmLocalizedAsync(strs.has(Format.Bold(user.ToString()), cur));
         }
 
+    }
+
     [Cmd]
     [RequireContext(ContextType.Guild)]
     [Priority(0)]

src/NadekoBot/Modules/Help/Help.cs

@@ -266,6 +266,20 @@ public partial class Help : NadekoModule<HelpService>
         await ctx.Channel.EmbedAsync(embed);
     }
 
+    private async Task Group(ModuleInfo group)
+    {
+        var eb = _eb.Create(ctx)
+                    .WithTitle(GetText(strs.cmd_group_commands(group.Name)))
+                    .WithOkColor();
+
+        foreach (var cmd in group.Commands)
+        {
+            eb.AddField(prefix + cmd.Aliases.First(), cmd.RealSummary(_strings, _medusae, Culture, prefix));
+        }
+
+        await ctx.Channel.EmbedAsync(eb);
+    }
+
     [Cmd]
     [Priority(0)]
     public async partial Task H([Leftover] string fail)
@@ -278,6 +292,20 @@ public partial class Help : NadekoModule<HelpService>
             return;
         }
 
+        if (fail.StartsWith(prefix))
+            fail = fail.Substring(prefix.Length);
+        
+        var group = _cmds.Modules
+                         .SelectMany(x => x.Submodules)
+                         .Where(x => !string.IsNullOrWhiteSpace(x.Group))
+                         .FirstOrDefault(x => x.Group.Equals(fail, StringComparison.InvariantCultureIgnoreCase));
+
+        if (group is not null)
+        {
+            await Group(group);
+            return;
+        }
+
         await ReplyErrorLocalizedAsync(strs.command_not_found);
     }
 

src/NadekoBot/_Extensions/Extensions.cs

@@ -121,7 +121,7 @@ public static class Extensions
             args = strings.GetCommandStrings(cmd.Summary, culture).Args;
         }
         
-        return args.Map(arg => GetFullUsage(cmd.Name, arg, prefix));
+        return args.Map(arg => GetFullUsage(cmd.Aliases.First(), arg, prefix));
     }
 
     private static string GetFullUsage(string commandName, string args, string prefix)

src/NadekoBot/_Extensions/IMessageChannelExtensions.cs

@@ -2,53 +2,116 @@ namespace NadekoBot.Extensions;
 
 public static class MessageChannelExtensions
 {
-    public static Task<IUserMessage> EmbedAsync(
-        this IMessageChannel ch,
-        IEmbedBuilder embed,
-        string msg = "",
+    // main overload that all other send methods reduce to
+    public static Task<IUserMessage> SendAsync(
+        this IMessageChannel channel,
+        string? plainText,
+        Embed? embed = null,
+        IReadOnlyCollection<Embed>? embeds = null,
+        bool sanitizeAll = false,
         MessageComponent? components = null)
-        => ch.SendMessageAsync(msg,
-            embed: embed.Build(),
+    {
+        plainText = sanitizeAll
+            ? plainText?.SanitizeAllMentions() ?? ""
+            : plainText?.SanitizeMentions() ?? "";
+
+        return channel.SendMessageAsync(plainText,
+            embed: embed,
+            embeds: embeds is null
+                ? null
+                : embeds as Embed[] ?? embeds.ToArray(),
             components: components,
             options: new()
             {
                 RetryMode = RetryMode.AlwaysRetry
             });
+    }
+
+    public static async Task<IUserMessage> SendAsync(
+        this IMessageChannel channel,
+        string? plainText,
+        NadekoInteraction? inter,
+        Embed? embed = null,
+        IReadOnlyCollection<Embed>? embeds = null,
+        bool sanitizeAll = false)
+    {
+        var msg = await channel.SendAsync(plainText,
+            embed,
+            embeds,
+            sanitizeAll,
+            inter?.CreateComponent());
+        
+        if (inter is not null)
+            await inter.RunAsync(msg);
+
+        return msg;
+    }
 
     public static Task<IUserMessage> SendAsync(
         this IMessageChannel channel,
-        string? plainText,
-        Embed? embed = null,
-        Embed[]? embeds = null,
+        SmartText text,
         bool sanitizeAll = false)
-    {
-        plainText = sanitizeAll ? plainText?.SanitizeAllMentions() ?? "" : plainText?.SanitizeMentions() ?? "";
-
-        return channel.SendMessageAsync(plainText, embed: embed, embeds: embeds);
-    }
-
-    public static Task<IUserMessage> SendAsync(this IMessageChannel channel, SmartText text, bool sanitizeAll = false)
         => text switch
         {
-            SmartEmbedText set => channel.SendAsync(set.PlainText, set.GetEmbed().Build(), sanitizeAll: sanitizeAll),
-            SmartPlainText st => channel.SendAsync(st.Text, null, sanitizeAll: sanitizeAll),
+            SmartEmbedText set => channel.SendAsync(set.PlainText,
+                set.GetEmbed().Build(),
+                sanitizeAll: sanitizeAll),
+            SmartPlainText st => channel.SendAsync(st.Text,
+                default(Embed),
+                sanitizeAll: sanitizeAll),
             SmartEmbedTextArray arr => channel.SendAsync(arr.Content,
                 embeds: arr.GetEmbedBuilders().Map(e => e.Build())),
             _ => throw new ArgumentOutOfRangeException(nameof(text))
         };
 
-    // this is a huge problem, because now i don't have
-    // access to embed builder service
-    // as this is an extension of the message channel
-    public static Task<IUserMessage> SendErrorAsync(
+    public static Task<IUserMessage> EmbedAsync(
+        this IMessageChannel ch,
+        IEmbedBuilder? embed,
+        string plainText = "",
+        IReadOnlyCollection<IEmbedBuilder>? embeds = null,
+        NadekoInteraction? inter = null)
+        => ch.SendAsync(plainText,
+            inter,
+            embed: embed?.Build(),
+            embeds: embeds?.Map(x => x.Build()));
+    
+    public static Task<IUserMessage> SendAsync(
         this IMessageChannel ch,
         IEmbedBuilderService eb,
+        string text,
+        MessageType type,
+        NadekoInteraction? inter = null)
+    {
+        var builder = eb.Create().WithDescription(text);
+
+        builder = (type switch
+        {
+            MessageType.Error => builder.WithErrorColor(),
+            MessageType.Ok => builder.WithOkColor(),
+            MessageType.Pending => builder.WithPendingColor(),
+            _ => throw new ArgumentOutOfRangeException(nameof(type))
+        });
+
+        return ch.EmbedAsync(builder, inter: inter);
+    }
+    
+    // regular send overloads
+    public static Task<IUserMessage> SendErrorAsync(this IMessageChannel ch, IEmbedBuilderService eb, string text)
+        => ch.SendAsync(eb, text, MessageType.Error);
+    
+    public static Task<IUserMessage> SendConfirmAsync(this IMessageChannel ch, IEmbedBuilderService eb, string text)
+        => ch.SendAsync(eb, text, MessageType.Ok);
+    
+    public static Task<IUserMessage> SendAsync(
+        this IMessageChannel ch,
+        IEmbedBuilderService eb,
+        MessageType type,
         string title,
-        string error,
+        string text,
         string? url = null,
         string? footer = null)
     {
-        var embed = eb.Create().WithErrorColor().WithDescription(error).WithTitle(title);
+        var embed = eb.Create().WithDescription(text).WithTitle(title);
 
         if (url is not null && Uri.IsWellFormedUriString(url, UriKind.Absolute))
             embed.WithUrl(url);
@@ -56,14 +119,18 @@ public static class MessageChannelExtensions
         if (!string.IsNullOrWhiteSpace(footer))
             embed.WithFooter(footer);
 
-        return ch.SendMessageAsync("", embed: embed.Build());
+        embed = type switch
+        {
+            MessageType.Error => embed.WithErrorColor(),
+            MessageType.Ok => embed.WithOkColor(),
+            MessageType.Pending => embed.WithPendingColor(),
+            _ => throw new ArgumentOutOfRangeException(nameof(type))
+        };
+        
+        return ch.EmbedAsync(embed);
     }
 
-    public static Task<IUserMessage> SendErrorAsync(this IMessageChannel ch, IEmbedBuilderService eb, string error)
-        => ch.SendMessageAsync("", embed: eb.Create().WithErrorColor().WithDescription(error).Build());
-
-    public static Task<IUserMessage> SendPendingAsync(this IMessageChannel ch, IEmbedBuilderService eb, string message)
-        => ch.SendMessageAsync("", embed: eb.Create().WithPendingColor().WithDescription(message).Build());
+    // embed title and optional footer overloads
     
     public static Task<IUserMessage> SendConfirmAsync(
         this IMessageChannel ch,
@@ -72,20 +139,18 @@ public static class MessageChannelExtensions
         string text,
         string? url = null,
         string? footer = null)
-    {
-        var embed = eb.Create().WithOkColor().WithDescription(text).WithTitle(title);
+        => ch.SendAsync(eb, MessageType.Ok, title, text, url, footer);
     
-        if (url is not null && Uri.IsWellFormedUriString(url, UriKind.Absolute))
-            embed.WithUrl(url);
+    public static Task<IUserMessage> SendErrorAsync(
+        this IMessageChannel ch,
+        IEmbedBuilderService eb,
+        string title,
+        string text,
+        string? url = null,
+        string? footer = null)
+        => ch.SendAsync(eb, MessageType.Error, title, text, url, footer);
 
-        if (!string.IsNullOrWhiteSpace(footer))
-            embed.WithFooter(footer);
-
-        return ch.SendMessageAsync("", embed: embed.Build());
-    }
-
-    public static Task<IUserMessage> SendConfirmAsync(this IMessageChannel ch, IEmbedBuilderService eb, string text)
-        => ch.SendMessageAsync("", embed: eb.Create().WithOkColor().WithDescription(text).Build());
+    // weird stuff
     
     public static Task<IUserMessage> SendTableAsync<T>(
         this IMessageChannel ch,
@@ -142,7 +207,7 @@ public static class MessageChannelExtensions
 
         var component = new ComponentBuilder()
                         .WithButton(new ButtonBuilder()
-                                    .WithStyle(ButtonStyle.Secondary)
+                                    .WithStyle(ButtonStyle.Primary)
                                     .WithCustomId(BUTTON_LEFT)
                                     .WithDisabled(lastPage == 0)
                                     .WithEmote(_arrowLeft))
@@ -165,6 +230,9 @@ public static class MessageChannelExtensions
                 if (smc.Message.Id != msg.Id)
                     return;
 
+                if (smc.Data.CustomId != BUTTON_LEFT && smc.Data.CustomId != BUTTON_RIGHT)
+                    return;
+                
                 await si.DeferAsync();
                 if (smc.User.Id != ctx.User.Id)
                     return;
@@ -210,12 +278,36 @@ public static class MessageChannelExtensions
         await msg.ModifyAsync(mp => mp.Components = new ComponentBuilder().Build());
     }
 
+    private static readonly Emoji _okEmoji = new Emoji("✅");
+    private static readonly Emoji _warnEmoji = new Emoji("⚠️");
+    private static readonly Emoji _errorEmoji = new Emoji("❌");
+    
+    public static Task ReactAsync(this ICommandContext ctx, MessageType type)
+    {
+        var emoji = type switch
+        {
+            MessageType.Error => _errorEmoji,
+            MessageType.Pending => _warnEmoji,
+            MessageType.Ok => _okEmoji,
+            _ => throw new ArgumentOutOfRangeException(nameof(type)),
+        };
+
+        return ctx.Message.AddReactionAsync(emoji);
+    }
+
     public static Task OkAsync(this ICommandContext ctx)
-        => ctx.Message.AddReactionAsync(new Emoji("✅"));
+        => ctx.ReactAsync(MessageType.Ok);
 
     public static Task ErrorAsync(this ICommandContext ctx)
-        => ctx.Message.AddReactionAsync(new Emoji("❌"));
+        => ctx.ReactAsync(MessageType.Error);
 
     public static Task WarningAsync(this ICommandContext ctx)
-        => ctx.Message.AddReactionAsync(new Emoji("⚠️"));
+        => ctx.ReactAsync(MessageType.Pending);
+}
+
+public enum MessageType
+{
+    Ok,
+    Pending,
+    Error
 }

src/NadekoBot/data/aliases.yml

@@ -519,7 +519,7 @@ streamoffline:
 - sto
 - stoff
 streamonlinedelete:
-- streamonlinedelte
+- streamonlinedelete
 - stondel
 streammessage:
 - streammsg
@@ -1286,3 +1286,15 @@ medusalist:
 medusainfo:
   - medusainfo
   - meinfo
+bankdeposit:
+  - deposit
+  - d
+  - dep
+bankwithdraw:
+  - withdraw
+  - w
+  - with
+bankbalance:
+  - balance
+  - b
+  - bal

src/NadekoBot/data/strings/commands/commands.en-US.yml

@@ -2185,4 +2185,15 @@ medusalist:
     Read about the medusa system [here](https://nadekobot.readthedocs.io/en/latest/medusa/creating-a-medusa/)
   args:
     - ""
-  
+bankdeposit:
+  desc: "Deposits the specified amount of currency into the bank for later use."
+  args:
+    - "50"
+bankwithdraw:
+  desc: "Withdraws the specified amount of currency from the bank if available."
+  args:
+    - "49"
+bankbalance:
+  desc: "Shows your current bank balance available for withdrawal."
+  args:
+    - ""

src/NadekoBot/data/strings/responses/responses.en-US.json

@@ -993,5 +993,10 @@
   "medusa_unloaded": "Medusa {0} has been unloaded.",
   "medusa_empty": "Medusa wasn't loaded as it didn't contain any Sneks.",
   "medusa_already_loaded": "Medusa {0} is already loaded",
-  "medusa_invalid_not_found": "Medusa with that name wasn't found or the file was invalid"
+  "medusa_invalid_not_found": "Medusa with that name wasn't found or the file was invalid",
+  "bank_balance": "You have {0} in your bank account.",
+  "bank_deposited": "You deposited {0} to your bank account.",
+  "bank_withdrew": "You withdrew {0} from your bank account.",
+  "bank_withdraw_insuff": "You don't have sufficient {0} in your bank account.",
+  "cmd_group_commands": "'{0}' command group" 
 }