fix: git postgres config bug when a different version is installed

src/install/db.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import logging
 import re
 from contextlib import suppress
@@ -8,6 +10,10 @@
 from helperFunctions.install import InstallationError, OperateInDirectory, check_distribution
 
 POSTGRES_VERSION = 17
+POSTGRES_UPDATE_MESSAGE = (
+    'Please see  "https://github.com/fkie-cad/FACT_core/wiki/Upgrading-the-PostgreSQL-Database" for information on how'
+    'to upgrade your PostgreSQL version.'
+)
 
 
 def install_postgres(version: int = POSTGRES_VERSION):
@@ -35,28 +41,27 @@ def configure_postgres(version: int = POSTGRES_VERSION):
     run('sudo service postgresql restart', shell=True, check=True)
 
 
-def postgres_is_up_to_date():
+def get_postgres_version() -> int:
     proc = run(split('psql --version'), text=True, capture_output=True, check=True)
     match = re.search(r'PostgreSQL\)? (\d+).\d+', proc.stdout)
     if match:
-        return int(match.groups()[0]) >= POSTGRES_VERSION
-    logging.warning('PostgreSQL version could not be identified. Is it installed?')
-    return True
+        return int(match.groups()[0])
+    raise InstallationError(
+        f'PostgreSQL is installed but version could not be identified: {proc.stdout}. {POSTGRES_UPDATE_MESSAGE}'
+    )
 
 
 def main():
+    postgres_version: int | None = None
     try:
-        if not postgres_is_up_to_date():
-            logging.warning(
-                'PostgreSQL is installed but the version is not up to date. Please see '
-                '"https://github.com/fkie-cad/FACT_core/wiki/Upgrading-the-PostgreSQL-Database" for information on how'
-                'to upgrade your PostgreSQL version.'
-            )
+        postgres_version = get_postgres_version()
+        if not postgres_version >= POSTGRES_VERSION:
+            logging.warning(f'PostgreSQL is installed but the version is not up to date. {POSTGRES_UPDATE_MESSAGE}')
         logging.info('Skipping PostgreSQL installation. Reason: Already installed.')
     except (CalledProcessError, FileNotFoundError):  # psql binary was not found
         logging.info('Setting up PostgreSQL database')
         install_postgres()
-    configure_postgres()
+    configure_postgres(postgres_version)
 
     # initializing DB
     logging.info('Initializing PostgreSQL database')