.atl / .at reworked

src/NadekoBot/Bot.cs

@@ -19,6 +19,7 @@ using NadekoBot.Common.ModuleBehaviors;
 using NadekoBot.Common.Configs;
 using NadekoBot.Db;
 using NadekoBot.Modules.Administration.Services;
+using NadekoBot.Modules.Searches;
 using Serilog;
 
 namespace NadekoBot

src/NadekoBot/Db/Models/AutoTranslateChannel.cs

@@ -0,0 +1,12 @@
+using System.Collections.Generic;
+
+namespace NadekoBot.Services.Database.Models
+{
+    public class AutoTranslateChannel : DbEntity
+    {
+        public ulong GuildId { get; set; }
+        public ulong ChannelId { get; set; }
+        public bool AutoDelete { get; set; }
+        public IList<AutoTranslateUser> Users { get; set; } = new List<AutoTranslateUser>();
+    }
+}

src/NadekoBot/Db/Models/AutoTranslateUser.cs

@@ -0,0 +1,11 @@
+namespace NadekoBot.Services.Database.Models
+{
+    public class AutoTranslateUser : DbEntity
+    {
+        public int ChannelId { get; set; }
+        public AutoTranslateChannel Channel { get; set; }
+        public ulong UserId { get; set; }
+        public string Source { get; set; }
+        public string Target { get; set; }
+    }
+}

src/NadekoBot/Db/NadekoContext.cs

@@ -60,6 +60,8 @@ namespace NadekoBot.Services.Database
         public DbSet<WaifuInfo> WaifuInfo { get; set; }
         public DbSet<ImageOnlyChannel> ImageOnlyChannels { get; set; }
         public DbSet<NsfwBlacklistedTag> NsfwBlacklistedTags { get; set; }
+        public DbSet<AutoTranslateChannel> AutoTranslateChannels { get; set; }
+        public DbSet<AutoTranslateUser> AutoTranslateUsers { get; set; }
 
         public NadekoContext(DbContextOptions<NadekoContext> options) : base(options)
         {
@@ -368,6 +370,21 @@ namespace NadekoBot.Services.Database
             modelBuilder.Entity<NsfwBlacklistedTag>(nbt => nbt
                 .HasIndex(x => x.GuildId)
                 .IsUnique(false));
+
+            var atch = modelBuilder.Entity<AutoTranslateChannel>();
+            atch.HasIndex(x => x.GuildId)
+                .IsUnique(false);
+
+            atch.HasIndex(x => x.ChannelId)
+                .IsUnique();
+
+            atch
+                .HasMany(x => x.Users)
+                .WithOne(x => x.Channel)
+                .OnDelete(DeleteBehavior.Cascade);
+
+            modelBuilder.Entity<AutoTranslateUser>(atu => atu
+                .HasAlternateKey(x => new { x.ChannelId, x.UserId }));
         }
     }
 }

src/NadekoBot/Migrations/20211213145407_atl-rework.cs

@@ -0,0 +1,71 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace NadekoBot.Migrations
+{
+    public partial class atlrework : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "AutoTranslateChannels",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    GuildId = table.Column<ulong>(type: "INTEGER", nullable: false),
+                    ChannelId = table.Column<ulong>(type: "INTEGER", nullable: false),
+                    AutoDelete = table.Column<bool>(type: "INTEGER", nullable: false),
+                    DateAdded = table.Column<DateTime>(type: "TEXT", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AutoTranslateChannels", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "AutoTranslateUsers",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    ChannelId = table.Column<int>(type: "INTEGER", nullable: false),
+                    UserId = table.Column<ulong>(type: "INTEGER", nullable: false),
+                    Source = table.Column<string>(type: "TEXT", nullable: true),
+                    Target = table.Column<string>(type: "TEXT", nullable: true),
+                    DateAdded = table.Column<DateTime>(type: "TEXT", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AutoTranslateUsers", x => x.Id);
+                    table.UniqueConstraint("AK_AutoTranslateUsers_ChannelId_UserId", x => new { x.ChannelId, x.UserId });
+                    table.ForeignKey(
+                        name: "FK_AutoTranslateUsers_AutoTranslateChannels_ChannelId",
+                        column: x => x.ChannelId,
+                        principalTable: "AutoTranslateChannels",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AutoTranslateChannels_ChannelId",
+                table: "AutoTranslateChannels",
+                column: "ChannelId",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AutoTranslateChannels_GuildId",
+                table: "AutoTranslateChannels",
+                column: "GuildId");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "AutoTranslateUsers");
+
+            migrationBuilder.DropTable(
+                name: "AutoTranslateChannels");
+        }
+    }
+}

src/NadekoBot/Migrations/NadekoContextModelSnapshot.cs

@@ -340,6 +340,62 @@ namespace NadekoBot.Migrations
                     b.ToTable("AutoCommands");
                 });
 
+            modelBuilder.Entity("NadekoBot.Services.Database.Models.AutoTranslateChannel", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<bool>("AutoDelete")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<ulong>("ChannelId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime?>("DateAdded")
+                        .HasColumnType("TEXT");
+
+                    b.Property<ulong>("GuildId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ChannelId")
+                        .IsUnique();
+
+                    b.HasIndex("GuildId");
+
+                    b.ToTable("AutoTranslateChannels");
+                });
+
+            modelBuilder.Entity("NadekoBot.Services.Database.Models.AutoTranslateUser", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("ChannelId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime?>("DateAdded")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Source")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Target")
+                        .HasColumnType("TEXT");
+
+                    b.Property<ulong>("UserId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasAlternateKey("ChannelId", "UserId");
+
+                    b.ToTable("AutoTranslateUsers");
+                });
+
             modelBuilder.Entity("NadekoBot.Services.Database.Models.BanTemplate", b =>
                 {
                     b.Property<int>("Id")
@@ -2194,6 +2250,17 @@ namespace NadekoBot.Migrations
                     b.Navigation("GuildConfig");
                 });
 
+            modelBuilder.Entity("NadekoBot.Services.Database.Models.AutoTranslateUser", b =>
+                {
+                    b.HasOne("NadekoBot.Services.Database.Models.AutoTranslateChannel", "Channel")
+                        .WithMany("Users")
+                        .HasForeignKey("ChannelId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Channel");
+                });
+
             modelBuilder.Entity("NadekoBot.Services.Database.Models.CommandAlias", b =>
                 {
                     b.HasOne("NadekoBot.Services.Database.Models.GuildConfig", null)
@@ -2541,6 +2608,11 @@ namespace NadekoBot.Migrations
                     b.Navigation("IgnoredChannels");
                 });
 
+            modelBuilder.Entity("NadekoBot.Services.Database.Models.AutoTranslateChannel", b =>
+                {
+                    b.Navigation("Users");
+                });
+
             modelBuilder.Entity("NadekoBot.Services.Database.Models.GuildConfig", b =>
                 {
                     b.Navigation("AntiAltSetting");

src/NadekoBot/Modules/Searches/Services/AtlExtensions.cs

@@ -0,0 +1,13 @@
+using System.Linq;
+using System.Threading.Tasks;
+using LinqToDB.EntityFrameworkCore;
+using NadekoBot.Services.Database.Models;
+
+namespace NadekoBot.Modules.Searches
+{
+    public static class AtlExtensions
+    {
+        public static Task<AutoTranslateChannel> GetByChannelId(this IQueryable<AutoTranslateChannel> set, ulong channelId)
+            => set.FirstOrDefaultAsyncLinqToDB(x => x.ChannelId == channelId);
+    }
+}

src/NadekoBot/Modules/Searches/Services/ITranslateService.cs

@@ -0,0 +1,14 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace NadekoBot.Modules.Searches
+{
+    public interface ITranslateService
+    {
+        public Task<string> Translate(string source, string target, string text = null);
+        Task<bool> ToggleAtl(ulong guildId, ulong channelId, bool autoDelete);
+        IEnumerable<string> GetLanguages();
+        Task<bool?> RegisterUserAsync(ulong userId, ulong channelId, string @from, string to);
+        Task<bool> UnregisterUser(ulong channelId, ulong userId);
+    }
+}

src/NadekoBot/Modules/Searches/Services/SearchesService.cs

@@ -1,10 +1,6 @@
-using Discord;
-using Discord.WebSocket;
-using Microsoft.EntityFrameworkCore;
-using NadekoBot.Common;
+using NadekoBot.Common;
 using NadekoBot.Modules.Searches.Common;
 using NadekoBot.Services;
-using NadekoBot.Services.Database.Models;
 using NadekoBot.Extensions;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
@@ -13,18 +9,14 @@ using SixLabors.ImageSharp.Drawing.Processing;
 using SixLabors.ImageSharp.PixelFormats;
 using SixLabors.ImageSharp.Processing;
 using System;
-using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Net;
 using System.Net.Http;
-using System.Threading;
 using System.Threading.Tasks;
 using AngleSharp.Html.Dom;
 using AngleSharp.Html.Parser;
-using NadekoBot.Db;
-using NadekoBot.Modules.Administration;
 using Serilog;
 using HorizontalAlignment = SixLabors.Fonts.HorizontalAlignment;
 using Image = SixLabors.ImageSharp.Image;
@@ -34,71 +26,31 @@ namespace NadekoBot.Modules.Searches.Services
     public class SearchesService : INService
     {
         private readonly IHttpClientFactory _httpFactory;
-        private readonly DiscordSocketClient _client;
         private readonly IGoogleApiService _google;
-        private readonly DbService _db;
         private readonly IImageCache _imgs;
         private readonly IDataCache _cache;
         private readonly FontProvider _fonts;
         private readonly IBotCredentials _creds;
-        private readonly IEmbedBuilderService _eb;
         private readonly NadekoRandom _rng;
 
-        public ConcurrentDictionary<ulong, bool> TranslatedChannels { get; } = new ConcurrentDictionary<ulong, bool>();
-        // (userId, channelId)
-        public ConcurrentDictionary<(ulong UserId, ulong ChannelId), string> UserLanguages { get; } = new ConcurrentDictionary<(ulong, ulong), string>();
-
         public List<WoWJoke> WowJokes { get; } = new List<WoWJoke>();
         public List<MagicItem> MagicItems { get; } = new List<MagicItem>();
         private readonly List<string> _yomamaJokes;
 
-        public SearchesService(DiscordSocketClient client, IGoogleApiService google,
-            DbService db, Bot bot, IDataCache cache, IHttpClientFactory factory,
-            FontProvider fonts, IBotCredentials creds, IEmbedBuilderService eb)
+        public SearchesService(IGoogleApiService google, 
+            IDataCache cache,
+            IHttpClientFactory factory,
+            FontProvider fonts,
+            IBotCredentials creds)
         {
             _httpFactory = factory;
-            _client = client;
             _google = google;
-            _db = db;
             _imgs = cache.LocalImages;
             _cache = cache;
             _fonts = fonts;
             _creds = creds;
-            _eb = eb;
             _rng = new NadekoRandom();
 
-            //translate commands
-            _client.MessageReceived += (msg) =>
-            {
-                var _ = Task.Run(async () =>
-                {
-                    try
-                    {
-                        if (!(msg is SocketUserMessage umsg))
-                            return;
-
-                        if (!TranslatedChannels.TryGetValue(umsg.Channel.Id, out var autoDelete))
-                            return;
-
-                        var key = (umsg.Author.Id, umsg.Channel.Id);
-
-                        if (!UserLanguages.TryGetValue(key, out string langs))
-                            return;
-
-                        var text = await Translate(langs, umsg.Resolve(TagHandling.Ignore))
-                                            .ConfigureAwait(false);
-                        if (autoDelete)
-                            try { await umsg.DeleteAsync().ConfigureAwait(false); } catch { }
-                        
-                        await umsg.Channel.SendConfirmAsync(_eb, $"{umsg.Author.Mention} `:` "
-                            + text.Replace("<@ ", "<@", StringComparison.InvariantCulture)
-                                  .Replace("<@! ", "<@!", StringComparison.InvariantCulture)).ConfigureAwait(false);
-                    }
-                    catch { }
-                });
-                return Task.CompletedTask;
-            };
-
             //joke commands
             if (File.Exists("data/wowjokes.json"))
             {
@@ -340,19 +292,6 @@ namespace NadekoBot.Modules.Searches.Services
                 _rng.Next(1, max).ToString("000") + ".png";
         }
 
-        public async Task<string> Translate(string langs, string text = null)
-        {
-            if (string.IsNullOrWhiteSpace(text))
-                throw new ArgumentException("Text is empty or null", nameof(text));
-            var langarr = langs.ToLowerInvariant().Split('>');
-            if (langarr.Length != 2)
-                throw new ArgumentException("Langs does not have 2 parts separated by a >", nameof(langs));
-            var from = langarr[0];
-            var to = langarr[1];
-            text = text?.Trim();
-            return (await _google.Translate(text, from, to).ConfigureAwait(false)).SanitizeMentions(true);
-        }
-
         private readonly object yomamaLock = new object();
         private int yomamaJokeIndex = 0;
         public Task<string> GetYomamaJoke()

src/NadekoBot/Modules/Searches/Services/TranslateService.cs

@@ -0,0 +1,216 @@
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Threading.Tasks;
+using Discord;
+using Discord.Net;
+using LinqToDB;
+using LinqToDB.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore;
+using NadekoBot.Common.ModuleBehaviors;
+using NadekoBot.Extensions;
+using NadekoBot.Services;
+
+namespace NadekoBot.Modules.Searches
+{
+    public sealed class TranslateService : ITranslateService, ILateExecutor, IReadyExecutor, INService
+    {
+        private readonly IGoogleApiService _google;
+        private readonly DbService _db;
+        private readonly IEmbedBuilderService _eb;
+        private readonly Bot _bot;
+
+        private readonly ConcurrentDictionary<ulong, bool> _atcs = new();
+        private readonly ConcurrentDictionary<ulong, ConcurrentDictionary<ulong, (string From, string To)>> _users = new();
+
+        public TranslateService(IGoogleApiService google,
+            DbService db,
+            IEmbedBuilderService eb,
+            Bot bot)
+        {
+            _google = google;
+            _db = db;
+            _eb = eb;
+            _bot = bot;
+        }
+
+        public async Task OnReadyAsync()
+        {
+            var ctx = _db.GetDbContext();
+
+            var guilds = _bot.AllGuildConfigs.Select(x => x.GuildId).ToList();
+            var cs = await ctx.AutoTranslateChannels
+                .Include(x => x.Users)
+                .Where(x => guilds.Contains(x.GuildId))
+                .ToListAsyncEF();
+
+            foreach (var c in cs)
+            {
+                _atcs[c.ChannelId] = c.AutoDelete;
+                _users[c.ChannelId] = new(c.Users.ToDictionary(x => x.UserId, x => (x.Source, x.Target)));
+            }
+        }
+
+        
+        public async Task LateExecute(IGuild guild, IUserMessage msg)
+        {
+            if (msg is IUserMessage { Channel: ITextChannel tch } um)
+            {
+                if (!_atcs.TryGetValue(tch.Id, out var autoDelete))
+                    return;
+
+                if (!_users.TryGetValue(tch.Id, out var users)
+                    || !users.TryGetValue(um.Author.Id, out var langs))
+                    return;
+
+                var output = await _google.Translate(msg.Content, langs.From, langs.To);
+
+                if (string.IsNullOrWhiteSpace(output))
+                    return;
+
+                var embed = _eb.Create()
+                    .WithOkColor();
+                
+                if (autoDelete)
+                {
+                    embed
+                        .WithAuthor(um.Author.ToString(), um.Author.GetAvatarUrl())
+                        .AddField(langs.From, um.Content)
+                        .AddField(langs.To, output);
+
+                    await tch.EmbedAsync(embed);
+                    
+                    try
+                    {
+                        await um.DeleteAsync();
+                    }
+                    catch (HttpException ex) when (ex.HttpCode == HttpStatusCode.Forbidden)
+                    {
+                        _atcs.TryUpdate(tch.Id, false, true);
+                    }
+
+                    return;
+                }
+
+                await um.ReplyAsync(embed: embed
+                    .AddField(langs.To, output)
+                    .Build());
+            }
+        }
+
+        public async Task<string> Translate(string source, string target, string text = null)
+        {
+            if (string.IsNullOrWhiteSpace(text))
+                throw new ArgumentException("Text is empty or null", nameof(text));
+
+            var res = await _google.Translate(text, source, target).ConfigureAwait(false);
+            return res.SanitizeMentions(true);
+        }
+
+        public async Task<bool> ToggleAtl(ulong guildId, ulong channelId, bool autoDelete)
+        {
+            var ctx = _db.GetDbContext();
+
+            var old = await ctx.AutoTranslateChannels
+                .ToLinqToDBTable()
+                .FirstOrDefaultAsyncLinqToDB(x => x.ChannelId == channelId);
+            
+            if (old is null)
+            {
+                ctx.AutoTranslateChannels
+                    .Add(new()
+                    {
+                        GuildId = guildId,
+                        ChannelId = channelId,
+                        AutoDelete = autoDelete,
+                    });
+                
+                await ctx.SaveChangesAsync();
+
+                _atcs[channelId] = autoDelete;
+                _users[channelId] = new();
+                
+                return true;
+            }
+
+            // if autodelete value is different, update the autodelete value
+            // instead of disabling
+            if (old.AutoDelete != autoDelete)
+            {
+                old.AutoDelete = autoDelete;
+                await ctx.SaveChangesAsync();
+                _atcs[channelId] = autoDelete;
+                return true;
+            }
+
+            await ctx.AutoTranslateChannels
+                .ToLinqToDBTable()
+                .DeleteAsync(x => x.ChannelId == channelId);
+            
+            await ctx.SaveChangesAsync();
+            _atcs.TryRemove(channelId, out _);
+            _users.TryRemove(channelId, out _);
+
+            return false;
+        }
+
+
+        public async Task<bool?> RegisterUserAsync(ulong userId, ulong channelId, string from, string to)
+        {
+            var ctx = _db.GetDbContext();
+            var ch = await ctx.AutoTranslateChannels
+                .ToLinqToDBTable()
+                .GetByChannelId(channelId);
+            
+            if (ch is null)
+                return null;
+
+            var user = ch.Users
+                .FirstOrDefault(x => x.UserId == userId);
+
+            if (user is null)
+            {
+                ch.Users.Add(user = new()
+                {
+                    Source = from,
+                    Target = to,
+                    UserId = userId,
+                });
+                
+                await ctx.SaveChangesAsync();
+
+                var dict = _users.GetOrAdd(channelId, new ConcurrentDictionary<ulong, (string, string)>());
+                dict[userId] = (from, to);
+
+                return true;
+            }
+
+            ctx.AutoTranslateUsers.Remove(user);
+            await ctx.SaveChangesAsync();
+            
+            if (_users.TryGetValue(channelId, out var inner))
+                inner.TryRemove(userId, out _);
+            
+            return true;
+        }
+
+        public async Task<bool> UnregisterUser(ulong channelId, ulong userId)
+        {
+            var ctx = _db.GetDbContext();
+            var rows = await ctx.AutoTranslateUsers
+                .ToLinqToDBTable()
+                .DeleteAsync(x => x.UserId == userId &&
+                                  x.Channel.ChannelId == channelId);
+
+            if (_users.TryGetValue(channelId, out var inner))
+                inner.TryRemove(userId, out _);
+            
+            await ctx.SaveChangesAsync();
+            return rows > 0;
+        }
+        
+        public IEnumerable<string> GetLanguages() => _google.Languages;
+    } 
+}

src/NadekoBot/Modules/Searches/TranslatorCommands.cs

@@ -2,35 +2,29 @@
 using Discord.Commands;
 using NadekoBot.Extensions;
 using System.Threading.Tasks;
-using System.Linq;
 using NadekoBot.Common.Attributes;
-using NadekoBot.Services;
-using NadekoBot.Modules.Searches.Services;
 
 namespace NadekoBot.Modules.Searches
 {
     public partial class Searches
     {
         [Group]
-        public class TranslateCommands : NadekoSubmodule
+        public class TranslateCommands : NadekoSubmodule<ITranslateService>
         {
-            private readonly SearchesService _searches;
-            private readonly IGoogleApiService _google;
-
-            public TranslateCommands(SearchesService searches, IGoogleApiService google)
-            {
-                _searches = searches;
-                _google = google;
-            }
-
             [NadekoCommand, Aliases]
-            public async Task Translate(string langs, [Leftover] string text = null)
+            public async Task Translate(string from, string to, [Leftover] string text = null)
             {
                 try
                 {
                     await ctx.Channel.TriggerTypingAsync().ConfigureAwait(false);
-                    var translation = await _searches.Translate(langs, text).ConfigureAwait(false);
-                    await SendConfirmAsync(GetText(strs.translation) + " " + langs, translation).ConfigureAwait(false);
+                    var translation = await _service.Translate(from, to, text).ConfigureAwait(false);
+
+                    var embed = _eb.Create(ctx)
+                        .WithOkColor()
+                        .AddField(from, text, false)
+                        .AddField(to, translation, false);
+
+                    await ctx.Channel.EmbedAsync(embed);
                 }
                 catch
                 {
@@ -38,27 +32,6 @@ namespace NadekoBot.Modules.Searches
                 }
             }
 
-            //[NadekoCommand, Usage, Description, Aliases]
-            //[OwnerOnly]
-            //public async Task Obfuscate([Leftover] string txt)
-            //{
-            //    var lastItem = "en";
-            //    foreach (var item in _google.Languages.Except(new[] { "en" }).Where(x => x.Length < 4))
-            //    {
-            //        var txt2 = await _searches.Translate(lastItem + ">" + item, txt);
-            //        await ctx.Channel.EmbedAsync(_eb.Create()
-            //            .WithOkColor()
-            //            .WithTitle(lastItem + ">" + item)
-            //            .AddField("Input", txt)
-            //            .AddField("Output", txt2));
-            //        txt = txt2;
-            //        await Task.Delay(500);
-            //        lastItem = item;
-            //    }
-            //    txt = await _searches.Translate(lastItem + ">en", txt);
-            //    await SendConfirmAsync("Final output:\n\n" + txt);
-            //}
-
             public enum AutoDeleteAutoTranslate
             {
                 Del,
@@ -68,56 +41,49 @@ namespace NadekoBot.Modules.Searches
             [NadekoCommand, Aliases]
             [RequireContext(ContextType.Guild)]
             [UserPerm(GuildPerm.Administrator)]
+            [BotPerm(ChannelPerm.ManageMessages)]
             [OwnerOnly]
             public async Task AutoTranslate(AutoDeleteAutoTranslate autoDelete = AutoDeleteAutoTranslate.Nodel)
             {
-                var channel = (ITextChannel)ctx.Channel;
-
-                if (autoDelete == AutoDeleteAutoTranslate.Del)
-                {
-                    _searches.TranslatedChannels.AddOrUpdate(channel.Id, true, (key, val) => true);
-                    await ReplyConfirmLocalizedAsync(strs.atl_ad_started).ConfigureAwait(false);
-                    return;
-                }
-                
-                if (_searches.TranslatedChannels.TryRemove(channel.Id, out _))
-                {
-                    await ReplyConfirmLocalizedAsync(strs.atl_stopped).ConfigureAwait(false);
-                    return;
-                }
-                if (_searches.TranslatedChannels.TryAdd(channel.Id, autoDelete == AutoDeleteAutoTranslate.Del))
+                var toggle = await _service.ToggleAtl(ctx.Guild.Id, ctx.Channel.Id, autoDelete == AutoDeleteAutoTranslate.Del);
+                if (toggle)
                 {
                     await ReplyConfirmLocalizedAsync(strs.atl_started).ConfigureAwait(false);
                 }
+                else
+                {
+                    await ReplyConfirmLocalizedAsync(strs.atl_stopped).ConfigureAwait(false);
+                }
             }
 
             [NadekoCommand, Aliases]
             [RequireContext(ContextType.Guild)]
-            public async Task AutoTransLang([Leftover] string langs = null)
+            public async Task AutoTransLang()
             {
-                var ucp = (ctx.User.Id, ctx.Channel.Id);
-
-                if (string.IsNullOrWhiteSpace(langs))
+                if (await _service.UnregisterUser(ctx.Channel.Id, ctx.User.Id))
                 {
-                    if (_searches.UserLanguages.TryRemove(ucp, out langs))
-                        await ReplyConfirmLocalizedAsync(strs.atl_removed).ConfigureAwait(false);
+                    await ReplyConfirmLocalizedAsync(strs.atl_removed).ConfigureAwait(false);
+                }
+            }
+            
+            [NadekoCommand, Aliases]
+            [RequireContext(ContextType.Guild)]
+            public async Task AutoTransLang(string from, string to)
+            {
+                var succ = await _service.RegisterUserAsync(ctx.User.Id, ctx.Channel.Id, from, to);
+
+                if (succ is null)
+                {
+                    await ReplyErrorLocalizedAsync(strs.atl_not_enabled);
                     return;
                 }
-
-                var langarr = langs.ToLowerInvariant().Split('>');
-                if (langarr.Length != 2)
-                    return;
-                var from = langarr[0];
-                var to = langarr[1];
-
-                if (!_google.Languages.Contains(from) || !_google.Languages.Contains(to))
+                
+                if (succ is false)
                 {
                     await ReplyErrorLocalizedAsync(strs.invalid_lang).ConfigureAwait(false);
                     return;
                 }
 
-                _searches.UserLanguages.AddOrUpdate(ucp, langs, (key, val) => langs);
-
                 await ReplyConfirmLocalizedAsync(strs.atl_set(from, to));
             }
 
@@ -125,7 +91,7 @@ namespace NadekoBot.Modules.Searches
             [RequireContext(ContextType.Guild)]
             public async Task Translangs()
             {
-                await ctx.Channel.SendTableAsync(_google.Languages, str => $"{str,-15}", 3).ConfigureAwait(false);
+                await ctx.Channel.SendTableAsync(_service.GetLanguages(), str => $"{str,-15}", 3).ConfigureAwait(false);
             }
 
         }

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

@@ -1306,7 +1306,7 @@ poll:
 autotranslang:
   desc: "Sets your source and target language to be used with `{0}at`. Specify no parameters to remove previously set value."
   args:
-    - "en>fr"
+    - "en fr"
 autotranslate:
   desc: "Starts automatic translation of all messages by users who set their `{0}atl` in this channel. You can set \"del\" parameter to automatically delete all translated user messages."
   args:

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

@@ -450,6 +450,7 @@
   "atl_set": "Your auto-translate language has been set to {0}>{1}",
   "atl_started": "Started automatic translation of messages on this channel.",
   "atl_stopped": "Stopped automatic translation of messages on this channel.",
+  "atl_not_enabled": "Automatic translation is not enabled on this channel.",
   "bad_input_format": "Bad input format, or something went wrong.",
   "card_not_found": "Couldn't find that card.",
   "catfact": "fact",