feat: unset a channel as a logger

Closes #3

src/db/mod.rs

@@ -39,7 +39,9 @@ WHERE guild_id = ?1
         .fetch_all(&self.pool)
         .await
         .map_err(|e| {
-            error!("Error getting logging channels for guild {guild_id}: {e:?}");
+            error!(
+                "Error getting logging channels for guild {guild_id}: {e:?}"
+            );
             e
         })?;
         Ok(channels.iter().map(|id| id.channel_id as u64).collect())
@@ -70,4 +72,27 @@ VALUES ( ?1, ?2 )
         })
         .map(|_| ())
     }
+
+    pub async fn remove_logging_channel(
+        &self,
+        guild_id: GuildId,
+        channel_id: ChannelId,
+    ) -> Result<()> {
+        let guild_id = guild_id.0 as i64;
+        let channel_id = channel_id.0 as i64;
+        let mut conn = self.pool.acquire().await?;
+        sqlx::query!(r#"
+DELETE FROM guild_log_channels
+WHERE guild_id = ?1 AND channel_id = ?2
+                     "#,
+                     guild_id,
+                     channel_id)
+            .execute(&mut *conn)
+            .await
+            .map_err(|e| {
+                error!("Error removing channel {channel_id} as a logger for guild {guild_id}: {e:?}");
+                e
+            })
+            .map(|_| ())
+    }
 }