Add role hoisting / ranking.

Add bot creation for #8.

src/database/migrations/scripts.rs

@@ -11,7 +11,7 @@ struct MigrationInfo {
     revision: i32,
 }
 
-pub const LATEST_REVISION: i32 = 7;
+pub const LATEST_REVISION: i32 = 8;
 
 pub async fn migrate_database() {
     let migrations = get_collection("migrations");
@@ -203,6 +203,15 @@ pub async fn run_migrations(revision: i32) -> i32 {
         .expect("Failed to create message index.");
     }
 
+    if revision <= 7 {
+        info!("Running migration [revision 7 / 2021-08-11]: Add message text index.");
+
+        get_db()
+            .create_collection("bots", None)
+            .await
+            .expect("Failed to create bots collection.");
+    }
+
     // Reminder to update LATEST_REVISION when adding new migrations.
     LATEST_REVISION
 }