Switch to Remora.Discord (#41)

result checks go brrr

this also involves switching to using Discord's modern stuff like embeds
and interactions

and using brand-new for me programming concepts (dependency injection,
results)

---------

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>
Signed-off-by: mctaylors <95250141+mctaylors@users.noreply.github.com>
Co-authored-by: mctaylors <95250141+mctaylors@users.noreply.github.com>
Co-authored-by: nrdk <neroduck@vk.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Data/GuildConfiguration.cs

@@ -0,0 +1,90 @@
+using System.Globalization;
+using Remora.Discord.API.Abstractions.Objects;
+
+namespace Boyfriend.Data;
+
+/// <summary>
+///     Stores per-guild settings that can be set by a member
+///     with <see cref="DiscordPermission.ManageGuild" /> using the /settings command
+/// </summary>
+public class GuildConfiguration {
+    /// <summary>
+    ///     Represents a scheduled event notification receiver.
+    /// </summary>
+    /// <remarks>
+    ///     Used to selectively mention guild members when a scheduled event has started or is about to start.
+    /// </remarks>
+    public enum NotificationReceiver {
+        Interested,
+        Role
+    }
+
+    public static readonly Dictionary<string, CultureInfo> CultureInfoCache = new() {
+        { "en", new CultureInfo("en-US") },
+        { "ru", new CultureInfo("ru-RU") },
+        { "mctaylors-ru", new CultureInfo("tt-RU") }
+    };
+
+    public string Language { get; set; } = "en";
+
+    /// <summary>
+    ///     Controls what message should be sent in <see cref="PublicFeedbackChannel" /> when a new member joins the server.
+    /// </summary>
+    /// <remarks>
+    ///     <list type="bullet">
+    ///         <item>No message will be sent if set to "off", "disable" or "disabled".</item>
+    ///         <item><see cref="Messages.DefaultWelcomeMessage" /> will be sent if set to "default" or "reset"</item>
+    ///     </list>
+    /// </remarks>
+    /// <seealso cref="GuildMemberAddResponder" />
+    public string WelcomeMessage { get; set; } = "default";
+
+    /// <summary>
+    ///     Controls whether or not the <see cref="Messages.Ready" /> message should be sent
+    ///     in <see cref="PrivateFeedbackChannel" /> on startup.
+    /// </summary>
+    /// <seealso cref="GuildCreateResponder" />
+    public bool ReceiveStartupMessages { get; set; }
+
+    public bool RemoveRolesOnMute { get; set; }
+
+    /// <summary>
+    ///     Controls whether or not a guild member's roles are returned if he/she leaves and then joins back.
+    /// </summary>
+    /// <remarks>Roles will not be returned if the member left the guild because of /ban or /kick.</remarks>
+    public bool ReturnRolesOnRejoin { get; set; }
+
+    public bool AutoStartEvents { get; set; }
+
+    /// <summary>
+    ///     Controls what channel should all public messages be sent to.
+    /// </summary>
+    public ulong PublicFeedbackChannel { get; set; }
+
+    /// <summary>
+    ///     Controls what channel should all private, moderator-only messages be sent to.
+    /// </summary>
+    public ulong PrivateFeedbackChannel { get; set; }
+
+    public ulong EventNotificationChannel { get; set; }
+    public ulong DefaultRole              { get; set; }
+    public ulong MuteRole                 { get; set; }
+    public ulong EventNotificationRole    { get; set; }
+
+    /// <summary>
+    ///     Controls what guild members should be mentioned when a scheduled event has started or is about to start.
+    /// </summary>
+    /// <seealso cref="NotificationReceiver" />
+    public List<NotificationReceiver> EventStartedReceivers { get; set; }
+        = new() { NotificationReceiver.Interested, NotificationReceiver.Role };
+
+    /// <summary>
+    ///     Controls the amount of time before a scheduled event to send a reminder in <see cref="EventNotificationChannel" />.
+    /// </summary>
+    public TimeSpan EventEarlyNotificationOffset { get; set; } = TimeSpan.Zero;
+
+    // Do not convert this to a property, else serialization will be attempted
+    public CultureInfo GetCulture() {
+        return CultureInfoCache[Language];
+    }
+}