Started work on giveaways, not completed

CHANGELOG.md

@@ -8,7 +8,7 @@ Experimental changelog. Mostly based on [keepachangelog](https://keepachangelog.
 
 - `.shopadd command` You can now sell commands in the shop. The command will execute as if you were the one running it when someone buys it
   - type `.h .shopadd` for more info
-- 
+- `.stickyroles` Users leaving the server will have their roles saved to the database and reapplied if they rejoin within 30 days.
 
 ## [4.3.22] - 23.04.2023
 

src/Nadeko.Bot.Common/Nadeko.Bot.Common.csproj

@@ -17,7 +17,7 @@
         <PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
         <PackageReference Include="OneOf.SourceGenerator" Version="3.0.263" />
         <PackageReference Include="SixLabors.Fonts" Version="1.0.0-beta17" />
-        <PackageReference Include="SixLabors.ImageSharp" Version="2.1.7" />
+        <PackageReference Include="SixLabors.ImageSharp" Version="2.1.8" />
         <PackageReference Include="SixLabors.ImageSharp.Drawing" Version="1.0.0-beta14" />
         <PackageReference Include="SixLabors.Shapes" Version="1.0.0-beta0009" />
         <PackageReference Include="CommandLineParser" Version="2.9.1" />

src/Nadeko.Bot.Db/Models/giveaway/GiveawayModel.cs

@@ -0,0 +1,12 @@
+namespace NadekoBot.Db.Models;
+
+public sealed class GiveawayModel
+{
+    public int Id { get; set; }
+    public ulong GuildId { get; set; }
+    public ulong MessageId { get; set; }
+    public string Message { get; set; }
+
+    public IList<GiveawayUser> Participants { get; set; } = new List<GiveawayUser>();
+    public DateTime EndsAt { get; set; }
+}

src/Nadeko.Bot.Db/Models/giveaway/GiveawayUser.cs

@@ -0,0 +1,9 @@
+namespace NadekoBot.Db.Models;
+
+public sealed class GiveawayUser
+{
+    public int Id { get; set; }
+    public int GiveawayId { get; set; }
+    public ulong UserId { get; set; }
+    public string Name { get; set; }
+}

src/Nadeko.Bot.Db/Nadeko.Bot.Db.csproj.DotSettings

@@ -0,0 +1,2 @@
+<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
+	<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=models_005Cgiveaway/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>

src/Nadeko.Bot.Modules.Administration/Role/RoleCommands.cs

@@ -189,7 +189,7 @@ public partial class Administration
         [Cmd]
         [RequireContext(ContextType.Guild)]
         [UserPerm(GuildPerm.Administrator)]
-        [BotPerm(GuildPerm.Administrator)]
+        [BotPerm(GuildPerm.ManageRoles)]
         public async Task StickyRoles()
         {
             var newState = await _stickyRoleSvc.ToggleStickyRoles(ctx.Guild.Id);

src/Nadeko.Bot.Modules.Administration/Role/StickyRolesService.cs

@@ -79,7 +79,7 @@ public sealed class StickyRolesService : INService, IReadyExecutor
             {
                 GuildId = guildId,
                 UserId = userId,
-                RoleIds = string.Join(',', guRoles.Select(x => x.Id.ToString())),
+                RoleIds = string.Join(',', guRoles.Where(x => !x.IsEveryone && !x.IsManaged).Select(x => x.Id.ToString())),
                 DateAdded = DateTime.UtcNow
             });
     }

src/Nadeko.Bot.Modules.Utility/Giveaway/GiveawayCommands.cs

@@ -0,0 +1,114 @@
+namespace NadekoBot.Modules.Utility;
+
+public partial class Utility
+{
+    [Name("Giveaways")]
+    [Group("ga")]
+    public partial class GiveawayCommands : NadekoModule<GiveawayService>
+    {
+        [Cmd]
+        [UserPerm(GuildPerm.ManageMessages)]
+        [BotPerm(ChannelPerm.ManageMessages | ChannelPerm.AddReactions)]
+        public async Task GiveawayStart(TimeSpan duration, [Leftover] string message)
+        {
+            if (duration > TimeSpan.FromDays(30))
+            {
+                await ReplyErrorLocalizedAsync(strs.giveaway_duration_invalid);
+                return;
+            }
+
+            var eb = _eb.Create(ctx)
+                .WithPendingColor()
+                .WithTitle(GetText(strs.giveaway_starting))
+                .WithDescription(message);
+
+            var startingMsg = await ctx.Channel.EmbedAsync(eb);
+
+            var maybeId =
+                await _service.StartGiveawayAsync(ctx.Guild.Id, ctx.Channel.Id, startingMsg.Id, duration, message);
+
+
+            if (maybeId is not int id)
+            {
+                await startingMsg.DeleteAsync();
+                await ReplyErrorLocalizedAsync(strs.giveaway_max_amount_reached);
+                return;
+            }
+
+            eb
+                .WithTitle(GetText(strs.giveaway_started))
+                .WithFooter($"id: {new kwum(id).ToString()}");
+
+            await startingMsg.AddReactionAsync(new Emoji(GiveawayService.GiveawayEmoji));
+            await startingMsg.ModifyAsync(x => x.Embed = eb.Build());
+        }
+
+        [Cmd]
+        [UserPerm(GuildPerm.ManageMessages)]
+        public async Task GiveawayEnd(kwum id)
+        {
+            var (giveaway, winner) = await _service.EndGiveawayAsync(ctx.Guild.Id, id);
+
+            if (winner is null || giveaway is null)
+                return;
+
+            var eb = _eb.Create(ctx)
+                .WithOkColor()
+                .WithTitle(GetText(strs.giveaway_ended))
+                .WithDescription(giveaway.Message)
+                .AddField(GetText(strs.winner),
+                    $"""
+                     {winner.Name}
+                     <@{winner.UserId}>
+                     {Format.Code(winner.UserId.ToString())}
+                     """,
+                    true);
+
+            await ctx.Channel.EmbedAsync(eb);
+        }
+
+        [Cmd]
+        [UserPerm(GuildPerm.ManageMessages)]
+        public async Task GiveawayReroll(kwum id)
+        {
+        }
+
+        [Cmd]
+        [UserPerm(GuildPerm.ManageMessages)]
+        public async Task GiveawayCancel(kwum id)
+        {
+            var success = await _service.CancelGiveawayAsync(ctx.Guild.Id, id);
+
+            if (!success)
+            {
+                await ReplyConfirmLocalizedAsync(strs.giveaway_not_found);
+                return;
+            }
+
+            await ReplyConfirmLocalizedAsync(strs.giveaway_cancelled);
+        }
+
+        [Cmd]
+        [UserPerm(GuildPerm.ManageMessages)]
+        public async Task GiveawayList()
+        {
+            var giveaways = await _service.GetGiveawaysAsync(ctx.Guild.Id);
+
+            if (!giveaways.Any())
+            {
+                await ReplyErrorLocalizedAsync(strs.no_givaways);
+                return;
+            }
+
+            var eb = _eb.Create(ctx)
+                .WithOkColor();
+
+            foreach (var g in giveaways)
+            {
+                eb.AddField($"id: {new kwum(g.Id)}", g.Message, true);
+            }
+
+            await ctx.Channel.EmbedAsync(eb);
+        }
+    }
+}

src/Nadeko.Bot.Modules.Utility/Giveaway/GiveawayService.cs

@@ -0,0 +1,209 @@
+using LinqToDB;
+using LinqToDB.EntityFrameworkCore;
+using NadekoBot.Common.ModuleBehaviors;
+using NadekoBot.Db.Models;
+
+namespace NadekoBot.Modules.Utility;
+
+public sealed class GiveawayService : INService, IReadyExecutor
+{
+    public static string GiveawayEmoji = "🎉";
+
+    private readonly DbService _db;
+    private readonly IBotCredentials _creds;
+    private readonly DiscordSocketClient _client;
+    private GiveawayModel[] _shardGiveaways;
+    private readonly NadekoRandom _rng;
+
+    public GiveawayService(DbService db, IBotCredentials creds, DiscordSocketClient client)
+    {
+        _db = db;
+        _creds = creds;
+        _client = client;
+        _rng = new NadekoRandom();
+
+
+        _client.ReactionAdded += OnReactionAdded;
+        _client.ReactionRemoved += OnReactionRemoved;
+    }
+
+    private async Task OnReactionRemoved(Cacheable<IUserMessage, ulong> msg,
+        Cacheable<IMessageChannel, ulong> arg2,
+        SocketReaction r)
+    {
+        if (!r.User.IsSpecified)
+            return;
+        
+        var user = r.User.Value;
+        
+        if (user.IsBot || user.IsWebhook)
+            return;
+        
+        if (r.Emote is Emoji e && e.Name == GiveawayEmoji)
+        {
+            await LeaveGivawayAsync(msg.Id, user.Id);
+        }
+    }
+
+    private async Task OnReactionAdded(Cacheable<IUserMessage, ulong> msg, Cacheable<IMessageChannel, ulong> ch,
+        SocketReaction r)
+    {
+        if (!r.User.IsSpecified)
+            return;
+
+        var user = r.User.Value;
+
+        if (user.IsBot || user.IsWebhook)
+            return;
+
+        var textChannel = ch.Value as ITextChannel;
+
+        if (textChannel is null)
+            return;
+
+
+        if (r.Emote is Emoji e && e.Name == GiveawayEmoji)
+        {
+            await JoinGivawayAsync(msg.Id, user.Id, user.Username);
+        }
+    }
+
+    public async Task OnReadyAsync()
+    {
+        // load giveaways for this shard from the database
+        await using var ctx = _db.GetDbContext();
+
+        _shardGiveaways = await ctx
+            .GetTable<GiveawayModel>()
+            .Where(x => Linq2DbExpressions.GuildOnShard(x.GuildId, _creds.TotalShards, _client.ShardId))
+            .ToArrayAsync();
+    }
+
+    public async Task<int?> StartGiveawayAsync(ulong guildId, ulong channelId, ulong messageId, TimeSpan duration,
+        string message)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        // first check if there are more than 5 giveaways
+        var count = await ctx
+            .GetTable<GiveawayModel>()
+            .CountAsync(x => x.GuildId == guildId);
+
+        if (count >= 5)
+            return null;
+
+        var endsAt = DateTime.UtcNow + duration;
+        var output = await ctx.GetTable<GiveawayModel>()
+            .InsertWithOutputAsync(() => new GiveawayModel
+            {
+                GuildId = guildId,
+                MessageId = messageId,
+                Message = message,
+                EndsAt = endsAt,
+            });
+
+        return output.Id;
+    }
+
+
+    public async Task<(GiveawayModel? giveaway, GiveawayUser? winner)> EndGiveawayAsync(ulong guildId, int id)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        var giveaway = await ctx
+            .GetTable<GiveawayModel>()
+            .Where(x => x.GuildId == guildId && x.Id == id)
+            .LoadWith(x => x.Participants)
+            .FirstOrDefaultAsyncLinqToDB();
+
+        if (giveaway is null)
+            return default;
+
+        await ctx
+            .GetTable<GiveawayModel>()
+            .Where(x => x.Id == id)
+            .DeleteAsync();
+
+        if (giveaway.Participants.Count == 0)
+            return default;
+        
+        if (giveaway.Participants.Count == 1)
+            return (giveaway, giveaway.Participants[0]);
+
+        return (giveaway, giveaway.Participants[_rng.Next(0, giveaway.Participants.Count - 1)]);
+    }
+
+    public async Task RerollGiveawayAsync(ulong guildId, int id)
+    {
+    }
+
+    public async Task<bool> CancelGiveawayAsync(ulong guildId, int id)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        var count = await ctx
+            .GetTable<GiveawayModel>()
+            .Where(x => x.GuildId == guildId && x.Id == id)
+            .DeleteAsync();
+
+        // todo clear cache
+
+        return count > 0;
+    }
+
+    public async Task<IReadOnlyCollection<GiveawayModel>> GetGiveawaysAsync(ulong guildId)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        return await ctx
+            .GetTable<GiveawayModel>()
+            .Where(x => x.GuildId == guildId)
+            .ToListAsync();
+    }
+
+    public async Task<bool> JoinGivawayAsync(ulong messageId, ulong userId, string userName)
+    {
+        await using var ctx = _db.GetDbContext();
+
+        var giveaway = await ctx
+            .GetTable<GiveawayModel>()
+            .Where(x => x.MessageId == messageId)
+            .FirstOrDefaultAsyncLinqToDB();
+
+        if (giveaway is null)
+            return false;
+
+        // add the user to the database
+        await ctx.GetTable<GiveawayUser>()
+            .InsertAsync(
+                () => new GiveawayUser()
+                {
+                    UserId = userId,
+                    GiveawayId = giveaway.Id,
+                    Name = userName,
+                }
+            );
+
+        return true;
+    }
+
+    public async Task<bool> LeaveGivawayAsync(ulong messageId, ulong userId)
+    {
+        await using var ctx = _db.GetDbContext();
+        
+        var giveaway = await ctx
+            .GetTable<GiveawayModel>()
+            .Where(x => x.MessageId == messageId)
+            .FirstOrDefaultAsyncLinqToDB();
+        
+        if (giveaway is null)
+            return false;
+        
+        await ctx
+            .GetTable<GiveawayUser>()
+            .Where(x => x.UserId == userId && x.GiveawayId == giveaway.Id)
+            .DeleteAsync();
+        
+        return true;
+    }
+}

src/Nadeko.Bot.Modules.Utility/Nadeko.Bot.Modules.Utility.csproj

@@ -24,8 +24,4 @@
         <ProjectReference Include="..\Nadeko.Bot.Generators.Cloneable\Nadeko.Bot.Generators.Cloneable.csproj" OutputItemType="Analyzer" />
     </ItemGroup>
 
-    <ItemGroup>
-      <Folder Include="_common\Db\" />
-    </ItemGroup>
-
 </Project>

src/NadekoBot/Db/NadekoContext.cs

@@ -493,6 +493,25 @@ public abstract class NadekoContext : DbContext
         }).IsUnique());
         
         #endregion
+        
+        
+        #region Giveaway
+
+        modelBuilder.Entity<GiveawayModel>()
+            .HasMany(x => x.Participants)
+            .WithOne()
+            .HasForeignKey(x => x.GiveawayId)
+            .OnDelete(DeleteBehavior.Cascade);
+        
+        modelBuilder.Entity<GiveawayUser>(gu => gu
+            .HasIndex(x => new
+            {
+                x.GiveawayId,
+                x.UserId
+            })
+            .IsUnique());
+        
+        #endregion
     }
 
 #if DEBUG

src/NadekoBot/Migrations/Mysql/20240424152958_giveaway.cs

@@ -0,0 +1,73 @@
+using System;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace NadekoBot.Db.Migrations.Mysql
+{
+    /// <inheritdoc />
+    public partial class giveaway : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "giveawaymodel",
+                columns: table => new
+                {
+                    id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("MySql:ValueGenerationStrategy", MySqlValueGenerationStrategy.IdentityColumn),
+                    guildid = table.Column<ulong>(type: "bigint unsigned", nullable: false),
+                    messageid = table.Column<ulong>(type: "bigint unsigned", nullable: false),
+                    message = table.Column<string>(type: "longtext", nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    endsat = table.Column<DateTime>(type: "datetime(6)", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("pk_giveawaymodel", x => x.id);
+                })
+                .Annotation("MySql:CharSet", "utf8mb4");
+
+            migrationBuilder.CreateTable(
+                name: "giveawayuser",
+                columns: table => new
+                {
+                    id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("MySql:ValueGenerationStrategy", MySqlValueGenerationStrategy.IdentityColumn),
+                    giveawayid = table.Column<int>(type: "int", nullable: false),
+                    userid = table.Column<ulong>(type: "bigint unsigned", nullable: false),
+                    name = table.Column<string>(type: "longtext", nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4")
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("pk_giveawayuser", x => x.id);
+                    table.ForeignKey(
+                        name: "fk_giveawayuser_giveawaymodel_giveawayid",
+                        column: x => x.giveawayid,
+                        principalTable: "giveawaymodel",
+                        principalColumn: "id",
+                        onDelete: ReferentialAction.Cascade);
+                })
+                .Annotation("MySql:CharSet", "utf8mb4");
+
+            migrationBuilder.CreateIndex(
+                name: "ix_giveawayuser_giveawayid_userid",
+                table: "giveawayuser",
+                columns: new[] { "giveawayid", "userid" },
+                unique: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "giveawayuser");
+
+            migrationBuilder.DropTable(
+                name: "giveawaymodel");
+        }
+    }
+}

src/NadekoBot/Migrations/Mysql/MysqlContextModelSnapshot.cs

@@ -3073,6 +3073,70 @@ namespace NadekoBot.Db.Migrations.Mysql
                     b.ToTable("followedstream", (string)null);
                 });
 
+            modelBuilder.Entity("NadekoBot.Db.Models.GiveawayModel", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int")
+                        .HasColumnName("id");
+
+                    MySqlPropertyBuilderExtensions.UseMySqlIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("EndsAt")
+                        .HasColumnType("datetime(6)")
+                        .HasColumnName("endsat");
+
+                    b.Property<ulong>("GuildId")
+                        .HasColumnType("bigint unsigned")
+                        .HasColumnName("guildid");
+
+                    b.Property<string>("Message")
+                        .IsRequired()
+                        .HasColumnType("longtext")
+                        .HasColumnName("message");
+
+                    b.Property<ulong>("MessageId")
+                        .HasColumnType("bigint unsigned")
+                        .HasColumnName("messageid");
+
+                    b.HasKey("Id")
+                        .HasName("pk_giveawaymodel");
+
+                    b.ToTable("giveawaymodel", (string)null);
+                });
+
+            modelBuilder.Entity("NadekoBot.Db.Models.GiveawayUser", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int")
+                        .HasColumnName("id");
+
+                    MySqlPropertyBuilderExtensions.UseMySqlIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("GiveawayId")
+                        .HasColumnType("int")
+                        .HasColumnName("giveawayid");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("longtext")
+                        .HasColumnName("name");
+
+                    b.Property<ulong>("UserId")
+                        .HasColumnType("bigint unsigned")
+                        .HasColumnName("userid");
+
+                    b.HasKey("Id")
+                        .HasName("pk_giveawayuser");
+
+                    b.HasIndex("GiveawayId", "UserId")
+                        .IsUnique()
+                        .HasDatabaseName("ix_giveawayuser_giveawayid_userid");
+
+                    b.ToTable("giveawayuser", (string)null);
+                });
+
             modelBuilder.Entity("NadekoBot.Db.Models.PatronQuota", b =>
                 {
                     b.Property<ulong>("UserId")
@@ -3703,6 +3767,16 @@ namespace NadekoBot.Db.Migrations.Mysql
                         .HasConstraintName("fk_followedstream_guildconfigs_guildconfigid");
                 });
 
+            modelBuilder.Entity("NadekoBot.Db.Models.GiveawayUser", b =>
+                {
+                    b.HasOne("NadekoBot.Db.Models.GiveawayModel", null)
+                        .WithMany("Participants")
+                        .HasForeignKey("GiveawayId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired()
+                        .HasConstraintName("fk_giveawayuser_giveawaymodel_giveawayid");
+                });
+
             modelBuilder.Entity("Nadeko.Bot.Db.Models.AntiSpamSetting", b =>
                 {
                     b.Navigation("IgnoredChannels");
@@ -3819,6 +3893,11 @@ namespace NadekoBot.Db.Migrations.Mysql
 
                     b.Navigation("Members");
                 });
+
+            modelBuilder.Entity("NadekoBot.Db.Models.GiveawayModel", b =>
+                {
+                    b.Navigation("Participants");
+                });
 #pragma warning restore 612, 618
         }
     }

src/NadekoBot/Migrations/Postgresql/20240424152951_giveaway.cs

@@ -0,0 +1,69 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace NadekoBot.Db.Migrations
+{
+    /// <inheritdoc />
+    public partial class giveaway : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "giveawaymodel",
+                columns: table => new
+                {
+                    id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    guildid = table.Column<decimal>(type: "numeric(20,0)", nullable: false),
+                    messageid = table.Column<decimal>(type: "numeric(20,0)", nullable: false),
+                    message = table.Column<string>(type: "text", nullable: false),
+                    endsat = table.Column<DateTime>(type: "timestamp without time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("pk_giveawaymodel", x => x.id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "giveawayuser",
+                columns: table => new
+                {
+                    id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    giveawayid = table.Column<int>(type: "integer", nullable: false),
+                    userid = table.Column<decimal>(type: "numeric(20,0)", nullable: false),
+                    name = table.Column<string>(type: "text", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("pk_giveawayuser", x => x.id);
+                    table.ForeignKey(
+                        name: "fk_giveawayuser_giveawaymodel_giveawayid",
+                        column: x => x.giveawayid,
+                        principalTable: "giveawaymodel",
+                        principalColumn: "id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "ix_giveawayuser_giveawayid_userid",
+                table: "giveawayuser",
+                columns: new[] { "giveawayid", "userid" },
+                unique: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "giveawayuser");
+
+            migrationBuilder.DropTable(
+                name: "giveawaymodel");
+        }
+    }
+}

src/NadekoBot/Migrations/Postgresql/PostgreSqlContextModelSnapshot.cs

@@ -3072,6 +3072,70 @@ namespace NadekoBot.Db.Migrations
                     b.ToTable("followedstream", (string)null);
                 });
 
+            modelBuilder.Entity("NadekoBot.Db.Models.GiveawayModel", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer")
+                        .HasColumnName("id");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("EndsAt")
+                        .HasColumnType("timestamp without time zone")
+                        .HasColumnName("endsat");
+
+                    b.Property<decimal>("GuildId")
+                        .HasColumnType("numeric(20,0)")
+                        .HasColumnName("guildid");
+
+                    b.Property<string>("Message")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("message");
+
+                    b.Property<decimal>("MessageId")
+                        .HasColumnType("numeric(20,0)")
+                        .HasColumnName("messageid");
+
+                    b.HasKey("Id")
+                        .HasName("pk_giveawaymodel");
+
+                    b.ToTable("giveawaymodel", (string)null);
+                });
+
+            modelBuilder.Entity("NadekoBot.Db.Models.GiveawayUser", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer")
+                        .HasColumnName("id");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("GiveawayId")
+                        .HasColumnType("integer")
+                        .HasColumnName("giveawayid");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text")
+                        .HasColumnName("name");
+
+                    b.Property<decimal>("UserId")
+                        .HasColumnType("numeric(20,0)")
+                        .HasColumnName("userid");
+
+                    b.HasKey("Id")
+                        .HasName("pk_giveawayuser");
+
+                    b.HasIndex("GiveawayId", "UserId")
+                        .IsUnique()
+                        .HasDatabaseName("ix_giveawayuser_giveawayid_userid");
+
+                    b.ToTable("giveawayuser", (string)null);
+                });
+
             modelBuilder.Entity("NadekoBot.Db.Models.PatronQuota", b =>
                 {
                     b.Property<decimal>("UserId")
@@ -3700,6 +3764,16 @@ namespace NadekoBot.Db.Migrations
                         .HasConstraintName("fk_followedstream_guildconfigs_guildconfigid");
                 });
 
+            modelBuilder.Entity("NadekoBot.Db.Models.GiveawayUser", b =>
+                {
+                    b.HasOne("NadekoBot.Db.Models.GiveawayModel", null)
+                        .WithMany("Participants")
+                        .HasForeignKey("GiveawayId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired()
+                        .HasConstraintName("fk_giveawayuser_giveawaymodel_giveawayid");
+                });
+
             modelBuilder.Entity("Nadeko.Bot.Db.Models.AntiSpamSetting", b =>
                 {
                     b.Navigation("IgnoredChannels");
@@ -3816,6 +3890,11 @@ namespace NadekoBot.Db.Migrations
 
                     b.Navigation("Members");
                 });
+
+            modelBuilder.Entity("NadekoBot.Db.Models.GiveawayModel", b =>
+                {
+                    b.Navigation("Participants");
+                });
 #pragma warning restore 612, 618
         }
     }

src/NadekoBot/Migrations/Sqlite/20240424152943_giveaway.cs

@@ -0,0 +1,68 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace NadekoBot.Db.Migrations.Sqlite
+{
+    /// <inheritdoc />
+    public partial class giveaway : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "GiveawayModel",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    GuildId = table.Column<ulong>(type: "INTEGER", nullable: false),
+                    MessageId = table.Column<ulong>(type: "INTEGER", nullable: false),
+                    Message = table.Column<string>(type: "TEXT", nullable: false),
+                    EndsAt = table.Column<DateTime>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_GiveawayModel", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "GiveawayUser",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    GiveawayId = table.Column<int>(type: "INTEGER", nullable: false),
+                    UserId = table.Column<ulong>(type: "INTEGER", nullable: false),
+                    Name = table.Column<string>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_GiveawayUser", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_GiveawayUser_GiveawayModel_GiveawayId",
+                        column: x => x.GiveawayId,
+                        principalTable: "GiveawayModel",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_GiveawayUser_GiveawayId_UserId",
+                table: "GiveawayUser",
+                columns: new[] { "GiveawayId", "UserId" },
+                unique: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "GiveawayUser");
+
+            migrationBuilder.DropTable(
+                name: "GiveawayModel");
+        }
+    }
+}

src/NadekoBot/Migrations/Sqlite/SqliteContextModelSnapshot.cs

@@ -2280,6 +2280,54 @@ namespace NadekoBot.Db.Migrations.Sqlite
                     b.ToTable("FollowedStream");
                 });
 
+            modelBuilder.Entity("NadekoBot.Db.Models.GiveawayModel", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("EndsAt")
+                        .HasColumnType("TEXT");
+
+                    b.Property<ulong>("GuildId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Message")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<ulong>("MessageId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("GiveawayModel");
+                });
+
+            modelBuilder.Entity("NadekoBot.Db.Models.GiveawayUser", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("GiveawayId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<ulong>("UserId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("GiveawayId", "UserId")
+                        .IsUnique();
+
+                    b.ToTable("GiveawayUser");
+                });
+
             modelBuilder.Entity("NadekoBot.Db.Models.PatronQuota", b =>
                 {
                     b.Property<ulong>("UserId")
@@ -2822,6 +2870,15 @@ namespace NadekoBot.Db.Migrations.Sqlite
                         .HasForeignKey("GuildConfigId");
                 });
 
+            modelBuilder.Entity("NadekoBot.Db.Models.GiveawayUser", b =>
+                {
+                    b.HasOne("NadekoBot.Db.Models.GiveawayModel", null)
+                        .WithMany("Participants")
+                        .HasForeignKey("GiveawayId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
             modelBuilder.Entity("Nadeko.Bot.Db.Models.AntiSpamSetting", b =>
                 {
                     b.Navigation("IgnoredChannels");
@@ -2938,6 +2995,11 @@ namespace NadekoBot.Db.Migrations.Sqlite
 
                     b.Navigation("Members");
                 });
+
+            modelBuilder.Entity("NadekoBot.Db.Models.GiveawayModel", b =>
+                {
+                    b.Navigation("Participants");
+                });
 #pragma warning restore 612, 618
         }
     }

src/NadekoBot/NadekoBot.csproj

@@ -69,7 +69,7 @@
         <PackageReference Include="SharpToken" Version="1.2.14" />
 
         <PackageReference Include="SixLabors.Fonts" Version="1.0.0-beta17" />
-        <PackageReference Include="SixLabors.ImageSharp" Version="2.1.7" />
+        <PackageReference Include="SixLabors.ImageSharp" Version="2.1.8" />
         <PackageReference Include="SixLabors.ImageSharp.Drawing" Version="1.0.0-beta14" />
         <PackageReference Include="SixLabors.Shapes" Version="1.0.0-beta0009" />
         <PackageReference Include="StackExchange.Redis" Version="2.6.122" />

src/NadekoBot/data/aliases.yml

@@ -1394,3 +1394,13 @@ doas:
   - execas
 cacheusers:
   - cacheusers
+giveawaystart:
+  - start
+giveawayend:
+  - end
+giveawaycancel:
+  - cancel
+giveawayreroll:
+  - reroll
+giveawaylist:
+  - list

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

@@ -2390,3 +2390,25 @@ stickyroles:
   desc: "Toggles whether the bot will save the leaving users' roles, and reapply them once they re-join. The roles will be stored for up to 30 days."
   args:
     - ""
+giveawaystart:
+  desc: "Starts a giveaway. Specify the duration (between 1 minute and 30 days) followed by the prize."
+  args:
+    - "12h We are giving away one copy of our latest album!"
+    - "15m Quick giveaway for a free course!"
+    - "1d Join to win 1000$!"
+giveawayend:
+  desc: "Prematurely ends a giveaway and chooses a winner. Specify the ID of the giveaway to end."
+  args:
+    - "ab3"
+giveawaycancel:
+  desc: "Cancels a giveaway. Specify the ID of the giveaway to cancel."
+  args:
+    - "ab3"
+giveawayreroll:
+  desc: "Rerolls a giveaway. Specify the ID of the giveaway to reroll. The winner will not be chosen."
+  args:
+    - "cd3"
+giveawaylist:
+  desc: "Lists all active giveaways."
+  args:
+    - ""

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

@@ -1066,5 +1066,14 @@
   "cache_users_pending": "Updating users, please wait...",
   "cache_users_done": "{0} users were added and {1} users were updated.",
   "sticky_roles_enabled": "Sticky roles enabled. Leaving users' roles will be restored when they rejoin the server.",
-  "sticky_roles_disabled": "Sticky roles disabled."
+  "sticky_roles_disabled": "Sticky roles disabled.",
+  "giveaway_duration_invalid": "Giveaway may not be shorter than 1 minute or longer than 30 days",
+  "giveaway_started": "Giveaway Started!",
+  "giveaway_max_amount_reached": "You've reached the maximum amount of giveaways you can have on this server.",
+  "giveaway_not_found": "Giveaway not found.",
+  "giveaway_ended": "Giveaway ended",
+  "no_givaways": "There are no active giveaways on this server.",
+  "giveaway_cancelled": "Giveaway cancelled.",
+  "giveaway_starting": "Starting giveaway...",
+  "winner": "Winner"
 }

src/NadekoBot/remove-migration.ps1

@@ -0,0 +1,4 @@
+dotnet ef migrations remove -c SqliteContext
+dotnet ef migrations remove -c PostgreSqlContext -f
+dotnet ef migrations remove -c MysqlContext -f
+