Random quotes

Commands/RandomQuoteCommand.cs

@@ -0,0 +1,41 @@
+using Discord;
+using Discord.WebSocket;
+using QuoteBot.Data;
+using SimpleDiscordNet.Commands;
+
+namespace QuoteBot.Commands;
+
+public class RandomQuoteCommand {
+
+    [SlashCommand("random-quote", "Display a random quote from this server.")]
+    public async Task Execute(SocketSlashCommand cmd, DiscordSocketClient client) {
+        if (cmd.Channel.GetChannelType() == ChannelType.DM) {
+            await cmd.RespondWithEmbedAsync("Quote", "You can't do this in your DMs.", ResponseType.Error, ephemeral: false);
+            return;
+        }
+
+        Quote? quote = Program.Storage.GetRandomQuote(cmd.GuildId!.Value);
+
+        if (quote == null) {
+            await cmd.RespondWithEmbedAsync("Quote",
+                "This server has no quotes yet, quote someone by running /quote, /quote-user to by replying to a message and pinging me.",
+                ResponseType.Error);
+            return;
+        }
+
+        bool hasId = ulong.TryParse(quote.Quotee, out ulong quoteeId);
+        IUser? quotee = hasId ? await client.GetUserAsync(quoteeId) : null;
+        string quoteeDisplay = quotee?.Username ?? quote.Quotee;
+
+        IUser? quoter = await client.GetUserAsync(quote.Quoter);
+        string quoterDisplay = quoter?.Username ?? quote.Quoter.ToString();
+
+        EmbedBuilder embedBuilder = new();
+        embedBuilder.WithTitle(quoteeDisplay);
+        embedBuilder.WithDescription($"\"{quote.Text}\"");
+        embedBuilder.WithFooter("Quoted by " + quoterDisplay);
+        embedBuilder.WithColor(Color.Green);
+
+        await cmd.RespondAsync(embed: embedBuilder.Build());
+    }
+}

Data/Storage/IStorageService.cs

@@ -8,4 +8,5 @@ public interface IStorageService {
     void SetQuoteSettings(ulong guild, ulong channel, string form);
     ulong? GetQuoteChannel(ulong guild);
     string? GetQuoteForm(ulong guild);
+    Quote? GetRandomQuote(ulong guild);
 }

Data/Storage/SqliteStorageService.cs

@@ -77,4 +77,22 @@ public void SetQuoteSettings(ulong guild, ulong channel, string form) {
         }
         return reader.GetString(0);
     }
+
+    public Quote? GetRandomQuote(ulong guild) {
+        using SQLiteCommand cmd = new("SELECT quoter, quotee, message_id, quote, quoted_message_channel, quoted_message_id FROM quotes WHERE guild = @guild ORDER BY RANDOM() LIMIT 1;", _connection);
+        cmd.Parameters.AddWithValue("guild", guild.ToString());
+        using SQLiteDataReader reader = cmd.ExecuteReader();
+        if (!reader.Read()) {
+            return null;
+        }
+        return new Quote(
+            ulong.Parse(reader.GetString(0)),
+            reader.GetString(1),
+            guild,
+            ulong.Parse(reader.GetString(2)),
+            reader.GetString(3),
+            ulong.Parse(reader.GetString(4)),
+            ulong.Parse(reader.GetString(5))
+        );
+    }
 }