Webhook command

Add a command to view the webhook, as some users wish to use the webhook to edit past reminders.

src/commands/moderation_cmds.rs

@@ -124,6 +124,39 @@ You may want to use one of the popular timezones below, otherwise click [here](h
     Ok(())
 }
 
+/// View the webhook being used to send reminders to this channel
+#[poise::command(
+    slash_command,
+    identifying_name = "webhook_url",
+    required_permissions = "ADMINISTRATOR"
+)]
+pub async fn webhook(ctx: Context<'_>) -> Result<(), Error> {
+    match ctx.channel_data().await {
+        Ok(data) => {
+            if let (Some(id), Some(token)) = (data.webhook_id, data.webhook_token) {
+                let _ = ctx
+                    .send(|b| {
+                        b.ephemeral(true).content(format!(
+                            "**Warning!**
+This link can be used by users to anonymously send messages, with or without permissions.
+Do not share it!
+|| https://discord.com/api/webhooks/{}/{} ||",
+                            id, token,
+                        ))
+                    })
+                    .await;
+            } else {
+                let _ = ctx.say("No webhook configured on this channel.").await;
+            }
+        }
+        Err(_) => {
+            let _ = ctx.say("No webhook configured on this channel.").await;
+        }
+    }
+
+    Ok(())
+}
+
 async fn macro_name_autocomplete(ctx: Context<'_>, partial: String) -> Vec<String> {
     sqlx::query!(
         "