update database functionality

src/backend/database.py

@@ -39,11 +39,9 @@ class Database:
             return None
 
     def connect(self):
-        logger.log_info("Connecting to database")
         return sql.connect(self.db_path)
 
     def close_connection(self, conn: sql.Connection):
-        logger.log_info("Closing database connection")
         conn.close()
 
     def create_tables(self):
@@ -115,7 +113,13 @@ class Database:
     def getBookIdBasedOnSignature(self, app_id:str, prof_id:str,signature:str)->int:
         result = self.query_db("SELECT bookdata, id FROM media WHERE app_id=? AND prof_id=?", (app_id,prof_id))
         books = [(load_pickle(i[0]),i[1]) for i in result]
-        book = [i for i in books if i[0].signature == signature][1]
+        # ic(books)
+        book = [i for i in books if i[0].signature == signature][0]
+        return book
+    def getBookBasedOnSignature(self, app_id:str, prof_id:str,signature:str)->BookData:
+        result = self.query_db("SELECT bookdata FROM media WHERE app_id=? AND prof_id=?", (app_id,prof_id))
+        books = [load_pickle(i[0]) for i in result]
+        book = [i for i in books if i.signature == signature][0]
         return book
     def getLastBookId(self)->int:
         return self.query_db("SELECT id FROM media ORDER BY id DESC", one=True)[0]
@@ -210,6 +214,7 @@ class Database:
             delete=False, dir=tempdir_path, mode="wb", suffix=f".{filetype}"
         )
         file.write(blob)
+        print("file created")
         return file.name
     def getFiles(self, app_id:int, prof_id:int)->list[tuple]:
         return self.query_db("SELECT filename, filetyp FROM files WHERE app_id=? AND prof_id=?", (app_id,prof_id))
@@ -315,7 +320,9 @@ class Database:
             - number(List[int]): a list of all currently used apparat numbers
         """
         numbers = self.query_db("SELECT appnr FROM semesterapparat WHERE deletion_status=0")    
-        return [i[0] for i in numbers]
+        numbers = [i[0] for i in numbers]
+        logger.log_info(f"Currently used apparat numbers: {numbers}")
+        return numbers
     def setNewSemesterDate(self, appnr, newDate, dauerapp=False):
         date = datetime.datetime.strptime(newDate, "%d.%m.%Y").strftime("%Y-%m-%d")
         if dauerapp:
@@ -415,7 +422,8 @@ class Database:
         self.query_db(query, params)
     def checkApparatExists(self, apparat_name):
         return True if self.query_db("SELECT appnr FROM semesterapparat WHERE name=?", (apparat_name,), one=True) else False
-
+    def checkApparatExistsById(self, apparat_id):
+        return True if self.query_db("SELECT appnr FROM semesterapparat WHERE appnr=?", (apparat_id,), one=True) else False
     # Statistics
     def statistic_request(self, **kwargs: Any):
         def __query(query):