add custom prefixes for servers to set

src/commands/mod.rs

@@ -6,6 +6,7 @@ mod yeehaw;
 mod gambling;
 mod eval;
 mod self_roles;
+mod settings;
 
 use crate::common::{Data, Error};
 
@@ -22,5 +23,6 @@ pub fn commands() -> Vec<Command<Data, Error>> {
         gambling::shop::buy(),
         eval::eval(),
         self_roles::role(),
+        settings::setting(),
     ]
 }

src/commands/settings.rs

@@ -0,0 +1,30 @@
+use crate::common::{Context, Error};
+
+#[poise::command(prefix_command, slash_command, required_permissions = "MANAGE_GUILD")]
+async fn prefix(ctx: Context<'_>, prefix: String) -> Result<(), Error> {
+    let guild = match ctx.guild_id() {
+        Some(g) => g,
+        None => {
+            ctx.reply("This command must be ran within a guild.").await?;
+            return Ok(());
+        }
+    };
+
+    let mut tx = ctx.data().database.begin().await?;
+
+    sqlx::query("INSERT INTO settings (guildid, prefix) VALUES ($1, $2) ON CONFLICT (guildid) DO UPDATE SET prefix = EXCLUDED.prefix")
+        .bind(guild.get() as i64)
+        .bind(&prefix)
+        .execute(&mut *tx).await?;
+
+    tx.commit().await?;
+
+    ctx.reply(format!("This server's custom prefix has been updated to `{prefix}`.")).await?;
+
+    Ok(())
+}
+
+#[poise::command(prefix_command, slash_command, subcommands("prefix"), subcommand_required)]
+pub async fn setting(_ctx: Context<'_>) -> Result<(), Error> {
+    Ok(())
+}