The Milestone Commit (#48)

mctaylors:
- updated readme 7 times (and only adding new logo from /about)
-
[removed](https://github.com/TeamOctolings/Boyfriend/pull/48/commits/aeeb3d4399c31df70b47ccdf59f6963fdb68e9ec)
bot footer from created event embed on the second try
-
[changed](https://github.com/TeamOctolings/Boyfriend/pull/48/commits/4b9b91d9e4d2289d9aad4e600f5ca6a424638a6e)
cdn from discord to upload.systems

Octol1ttle:
- Guild settings code has been overhauled. Instead of instances of a
`GuildConfiguration` class being (de-)serialized when used with listing
and setting options provided by reflection, there are now multiple
`Option` classes responsible for the type of option they are storing.
The classes support getting a value, validating and setting values with
Results, and getting a user-friendly representation of these values.
This makes use of polymorphism, providing clean and easier to use and
refactor code.
- Gateway event responders have been split into their own separate
files, which should make it easier to find and modify responders when
needed.
- Warning suppressions regarding unused and never instantiated classes
have been replaced by `[ImplicitUse]` annotations provided by
`JetBrains.Annotations`. This avoids hiding real issues and provides a
better way to suppress false warnings while being explicit.
- It is no longer possible to execute some slash commands if they are
run without the correct permissions
- Dependencies are now more explicitly defined

neroduckale:
 - Made easter eggs case-insensitive

---------

Signed-off-by: Macintosh II <95250141+mctaylors@users.noreply.github.com>
Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>
Co-authored-by: Octol1ttle <l1ttleofficial@outlook.com>
Co-authored-by: nrdk <neroduck@vk.com>

src/Responders/GuildLoadedResponder.cs

@@ -0,0 +1,63 @@
+using Boyfriend.Data;
+using Boyfriend.Services;
+using JetBrains.Annotations;
+using Microsoft.Extensions.Logging;
+using Remora.Discord.API.Abstractions.Gateway.Events;
+using Remora.Discord.API.Abstractions.Rest;
+using Remora.Discord.API.Gateway.Events;
+using Remora.Discord.Extensions.Embeds;
+using Remora.Discord.Gateway.Responders;
+using Remora.Results;
+
+namespace Boyfriend.Responders;
+
+/// <summary>
+///     Handles sending a <see cref="Ready" /> message to a guild that has just initialized if that guild
+///     has <see cref="GuildSettings.ReceiveStartupMessages" /> enabled
+/// </summary>
+[UsedImplicitly]
+public class GuildLoadedResponder : IResponder<IGuildCreate> {
+    private readonly IDiscordRestChannelAPI        _channelApi;
+    private readonly GuildDataService              _dataService;
+    private readonly ILogger<GuildLoadedResponder> _logger;
+    private readonly IDiscordRestUserAPI           _userApi;
+
+    public GuildLoadedResponder(
+        IDiscordRestChannelAPI channelApi, GuildDataService dataService, ILogger<GuildLoadedResponder> logger,
+        IDiscordRestUserAPI    userApi) {
+        _channelApi = channelApi;
+        _dataService = dataService;
+        _logger = logger;
+        _userApi = userApi;
+    }
+
+    public async Task<Result> RespondAsync(IGuildCreate gatewayEvent, CancellationToken ct = default) {
+        if (!gatewayEvent.Guild.IsT0) return Result.FromSuccess(); // Guild is not IAvailableGuild
+
+        var guild = gatewayEvent.Guild.AsT0;
+        _logger.LogInformation("Joined guild \"{Name}\"", guild.Name);
+
+        var cfg = await _dataService.GetSettings(guild.ID, ct);
+        if (!GuildSettings.ReceiveStartupMessages.Get(cfg))
+            return Result.FromSuccess();
+        if (GuildSettings.PrivateFeedbackChannel.Get(cfg).Empty())
+            return Result.FromSuccess();
+
+        var currentUserResult = await _userApi.GetCurrentUserAsync(ct);
+        if (!currentUserResult.IsDefined(out var currentUser)) return Result.FromError(currentUserResult);
+
+        Messages.Culture = GuildSettings.Language.Get(cfg);
+        var i = Random.Shared.Next(1, 4);
+
+        var embed = new EmbedBuilder().WithSmallTitle(currentUser.GetTag(), currentUser)
+            .WithTitle($"Beep{i}".Localized())
+            .WithDescription(Messages.Ready)
+            .WithCurrentTimestamp()
+            .WithColour(ColorsList.Blue)
+            .Build();
+        if (!embed.IsDefined(out var built)) return Result.FromError(embed);
+
+        return (Result)await _channelApi.CreateMessageAsync(
+            GuildSettings.PrivateFeedbackChannel.Get(cfg), embeds: new[] { built }, ct: ct);
+    }
+}