- Removed NadekoCommand and Aliases attribute from all commands

- All commands must be marked as partial
- Added [Cmd] Attribute to all commands
- Cmd Attribute comes from the source generator which adds [NadekoCommand] and [Aliases] Attribute to each command
- Should be updated in the future probably to be more performant and maybe add extra data to the commands
- Started reorganizing modules and submodules

src/NadekoBot/Modules/Administration/Timezone/TimeZoneCommands.cs

@@ -0,0 +1,75 @@
+#nullable disable
+using NadekoBot.Modules.Administration.Services;
+
+namespace NadekoBot.Modules.Administration;
+
+public partial class Administration
+{
+    [Group]
+    public partial class TimeZoneCommands : NadekoSubmodule<GuildTimezoneService>
+    {
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        public async partial Task Timezones(int page = 1)
+        {
+            page--;
+
+            if (page is < 0 or > 20)
+                return;
+
+            var timezones = TimeZoneInfo.GetSystemTimeZones().OrderBy(x => x.BaseUtcOffset).ToArray();
+            var timezonesPerPage = 20;
+
+            var curTime = DateTimeOffset.UtcNow;
+
+            var i = 0;
+            var timezoneStrings = timezones.Select(x => (x, ++i % 2 == 0))
+                                           .Select(data =>
+                                           {
+                                               var (tzInfo, flip) = data;
+                                               var nameStr = $"{tzInfo.Id,-30}";
+                                               var offset = curTime.ToOffset(tzInfo.GetUtcOffset(curTime))
+                                                                   .ToString("zzz");
+                                               if (flip)
+                                                   return $"{offset} {Format.Code(nameStr)}";
+                                               return $"{Format.Code(offset)} {nameStr}";
+                                           });
+
+
+            await ctx.SendPaginatedConfirmAsync(page,
+                curPage => _eb.Create()
+                              .WithOkColor()
+                              .WithTitle(GetText(strs.timezones_available))
+                              .WithDescription(string.Join("\n",
+                                  timezoneStrings.Skip(curPage * timezonesPerPage).Take(timezonesPerPage))),
+                timezones.Length,
+                timezonesPerPage);
+        }
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        public async partial Task Timezone()
+            => await ReplyConfirmLocalizedAsync(strs.timezone_guild(_service.GetTimeZoneOrUtc(ctx.Guild.Id)));
+
+        [Cmd]
+        [RequireContext(ContextType.Guild)]
+        [UserPerm(GuildPerm.Administrator)]
+        public async partial Task Timezone([Leftover] string id)
+        {
+            TimeZoneInfo tz;
+            try { tz = TimeZoneInfo.FindSystemTimeZoneById(id); }
+            catch { tz = null; }
+
+
+            if (tz is null)
+            {
+                await ReplyErrorLocalizedAsync(strs.timezone_not_found);
+                return;
+            }
+
+            _service.SetTimeZone(ctx.Guild.Id, tz);
+
+            await SendConfirmAsync(tz.ToString());
+        }
+    }
+}