Implement flag handling and migration status checks; refactor database test functions and update requirements

cli.py

@@ -3,6 +3,7 @@ import logging
 import time
 import os
 import sys
+from flags import status
 
 
 print("loading")
@@ -129,7 +130,6 @@ def exit_programm():
     print("")
     print("Disconnect DB")
     print("logout")
-    os.remove("migration_status.flag")
     print("shutting down")
     time.sleep(0.75)
     os.system('cls' if os.name == 'nt' else 'clear')
@@ -178,7 +178,7 @@ def menu():
 
 
 #The Terminal App Starts here
-time.sleep(5)
+time.sleep(2)
 print(r"""
 ##      ##    ##########
 ###    ###    ##      ##
@@ -187,8 +187,8 @@ print(r"""
 ##  ##  ##    ##      ##
 ##      ##    ##      ##
 """)
+while not status.get_migration():
+    time.sleep(0.5)
 logging.info("Menu is starting")
 time.sleep(2.5)
-while not os.path.exists("migration_status.flag"):
-    time.sleep(0.5)
 menu()

flags/status.py

@@ -0,0 +1,50 @@
+import threading
+from watchdog.events import PatternMatchingEventHandler
+from watchdog.observers import Observer
+import os
+import time
+
+FLAGS_DIR = os.path.dirname(os.path.abspath(__file__))
+
+
+
+class FlagHandler(PatternMatchingEventHandler):
+    def __init__(self, shared_state, lock):
+        super().__init__(patterns=["*.flag"], ignore_directories=True)
+        self.shared_state = shared_state
+        self.lock = lock
+
+    def on_created(self, event):
+        try:
+            with open(event.src_path, "r") as f:
+                content = f.read().strip()
+        except FileNotFoundError:
+            return
+        try:
+            os.remove(event.src_path)
+        except FileNotFoundError:
+            pass
+        with self.lock:
+            self.shared_state["current"] = content
+        time.sleep(2)
+
+shared_state = {"current": None}
+lock = threading.Lock()
+
+observer = Observer()
+observer.schedule(FlagHandler(shared_state, lock), path=FLAGS_DIR, recursive=False)
+observer.start()
+
+def get_status():
+    with lock:
+        current = shared_state["current"]
+    if current == "db_check_done":
+        return False
+    return current
+
+def get_migration():
+    with lock:
+            current = shared_state["current"]
+    if current == "migration_done":
+        return True
+    return False

main.py

@@ -5,6 +5,7 @@ import os
 import auth.api_security as auth
 import time
 import threading
+from tests import db_test
     
 try:
     os.remove("api.log")
@@ -43,24 +44,39 @@ def run_migration():
     )
     process.wait()
     migration_done = (process.returncode == 0)
-    with open("migration_status.flag", "w") as f:
-        f.write("done" if migration_done else "failed")
+    with open("flags/migration_status.flag", "w") as f:
+        f.write("migration_done" if migration_done else "failed")
 
-thread = threading.Thread(target=run_migration)
-thread.start()
+
+
+#DB test
+def run_db_test():
+    tokens = db_test.test_table("tokens", ["tokens", "time", "end_date"])
+    user = db_test.test_table("user", ["username", "password", "role"])
+    items = db_test.test_table("luggage", ["clothes", "weight", "pieces"])
+    time.sleep(5)
+    if tokens == True & user == True & items == True:
+        with open("flags/db.flag", "w") as f:
+                f.write("db_check_done")
+    else:
+        os._exit(1)
 
 #cli and api
 log_file = open("api_server.log", "w", encoding="utf-8")
 api_process = subprocess.Popen(
-    ["fastapi", "dev", "api_server.py"], 
+    ["fastapi", "dev", "api_server.py", "--reload-dir", "web", "--reload-dir", "api", "--reload-dir", "api_server.py",], 
     stdout=log_file,
     stderr=log_file,
     env=env
 )
 cli_process = subprocess.Popen([sys.executable, "cli.py"])
 
-api_process.wait()
-cli_process.wait()
+db_thread = threading.Thread(target=run_db_test)
+db_thread.start()
+thread = threading.Thread(target=run_migration)
+thread.start()
+threading.Thread(target=api_process.wait, daemon=True).start()
+threading.Thread(target=cli_process.wait, daemon=True).start()
 
 # automatic durataion validation check
 while True:

requirements.txt

@@ -5,4 +5,6 @@ Jinja2==3.1.6
 MarkupSafe==3.0.3
 itsdangerous==2.2.0
 alembic==1.20.0
-SQLAlchemy==2.0.54
+SQLAlchemy==2.0.54
+watchdog==6.0.0
+#watchfiles==1.2.0

tests/db_test.py

@@ -0,0 +1,46 @@
+import sys
+import os
+
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
+
+
+
+import os
+import db
+import logging
+import sys
+from migration import alembic_scipt as alembic
+from sqlalchemy import inspect
+
+session = db.session
+engine = db.engine
+
+def test_column(engine, tablename, row):
+    try:
+        inspector = inspect(engine)
+        columns = [col["name"] for col in inspector.get_columns(tablename)]
+        return row in columns
+    except Exception as e:
+        logging.error(e)
+
+
+def test_table(table, columns):
+    for column in columns:
+        try:
+            exists = test_column(engine, table, column)
+            if exists == False:
+                logging.error(f"DB has not all columns. {column} is missing")
+                print(f"Column {column} is missing")
+                sys.exit()
+                os._exit(1)
+                return False
+            else:
+                logging.info("Column fine")
+        except Exception as e:
+            logging.error(e)
+    return True
+
+def migration_check():
+    if alembic.check_db() == False:
+        print("migrating")
+        logging.info("DB is migrating")