Update flake with postgres server

.gitignore

@@ -4,6 +4,8 @@ build/
 !gradle/wrapper/gradle-wrapper.jar
 !**/src/main/**/build/
 !**/src/test/**/build/
+.postgres
+/db-migration.sql
 
 ### STS ###
 .apt_generated

flake.nix

@@ -41,6 +41,10 @@
         echo "Launching misael"
         ${jdk}/bin/java -jar ${misael}/misael.jar --spring.datasource.url=$MISAEL_DATABASE --spring.datasource.password=$MISAEL_PASSWORD "$@"
       '';
+      postgres-server = pkgs.writeShellScriptBin "postgres-server" ''
+            mkdir -p .postgres
+            ${pkgs.podman}/bin/podman run -e POSTGRES_USER=misael -e POSTGRES_PASSWORD=misael-dev -e POSTGRES_DB=misael --volume ./.postgres:/var/lib/postgresql -p 127.0.0.1:5432:5432 postgres:18.4 & > .postgres/postgres.log &
+      '';
     in {
       packages.${system} = {
         default = self.packages.${system}.misael;
@@ -50,6 +54,7 @@
       apps.${system} = {
         default = self.apps.${system}.misael;
         misael = { type = "app"; program = "${misael-launcher}/bin/misael"; };
+        postgres-server = { type = "app"; program = "${postgres-server}/bin/postgres-server"; };
       };
 
       devShells.${system} = {

src/main/resources/db/migration/V5__new_privileges.sql

@@ -2,7 +2,13 @@ alter table role_privileges drop constraint role_privileges_privileges_check;
 alter table role_privileges add constraint role_privileges_privileges_check
     check (privileges in ('LIST_USERS','ADD_USERS','LIST_QUIZZ','CREATE_QUIZZ','VIEW_ALL_FORMS'));
 
-insert into role_privileges VALUES
-    ((select id from roles where "name" = 'ADMIN'),'CREATE_QUIZZ');
-insert into role_privileges VALUES
+do $$
+begin
+if exists (select id from roles where "name" = 'ADMIN')
+then
+    insert into role_privileges VALUES
+        ((select id from roles where "name" = 'ADMIN'),'CREATE_QUIZZ'),
         ((select id from roles where "name" = 'ADMIN'),'VIEW_ALL_FORMS');
+end if;
+end
+$$