added database migrations

migrations/20250901201710_triggers_extension.up.sql

@@ -0,0 +1,21 @@
+-- update Funktion für pass_hash
+
+CREATE OR REPLACE FUNCTION update_zuletzt_geandert()
+RETURNS TRIGGER AS $$
+BEGIN
+    -- Nur wenn hash geändert wurde
+    IF NEW.pass_hash IS DISTINCT FROM OLD.pass_hash THEN
+        NEW.zuletzt_geandert = now();
+    END IF;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER pass_hash_update
+BEFORE UPDATE ON user_password
+FOR EACH ROW
+EXECUTE FUNCTION update_zuletzt_geandert();
+
+-- Adds crypto extension
+
+CREATE EXTENSION IF NOT EXISTS pgcrypto;