fix: use postgres drop commands

netoik-git.spec

@@ -58,6 +58,8 @@ rm --recursive %{_tmppath}/gitea_images
 # Create postgres user and db
 if ! runuser --user=postgres -- psql --quiet --tuples-only --command='\du' | grep --quiet gitea; then
   runuser --user=postgres -- createuser gitea
+fi
+if ! runuser --user=postgres -- psql --quiet --tuples-only --command='\l' | grep --quiet gitea; then
   runuser --user=postgres -- createdb --owner=gitea gitea
 fi
 
@@ -95,12 +97,26 @@ systemctl reenable gitea.service
 systemctl restart gitea.service nginx.service
 
 %postun
-# If removing, delete users and db
+# If uninstalling, then delete users and db
 if [ $1 == 0 ]; then
-  userdel --force --remove gitea
-  runuser --user=postgres -- psql --command='DROP DATABASE gitea; DROP USER gitea;'
+	# Remove gitea user if existing
+	if id gitea >/dev/null 2>&1; then
+  	userdel --force --remove gitea
+	fi
+
+	# Remove gitea database if existing
+	if runuser --user=postgres -- psql --quiet --tuples-only --command='\l' | grep --quiet gitea; then
+  	runuser --user=postgres -- dropdb gitea
+	fi
+	if runuser --user=postgres -- psql --quiet --tuples-only --command='\du' | grep --quiet gitea; then
+		runuser --user=postgres -- dropuser gitea
+	fi
+
+	# Remove actrunner users if existing
   for i in $(seq 1 4); do
-    userdel --force --remove actrunner$i
+		if id actrunner$i >/dev/null 2>&1; then
+   		userdel --force --remove actrunner$i
+		fi
   done
 fi