additional logging and error handling

src/wce_crm/backend/backend.py

@@ -8,6 +8,7 @@ import polars as pl
 import sqlalchemy as sql
 
 from wce_crm import db
+from wce_crm.logging import logger_back as logger
 
 
 class CompanyInfo(TypedDict):
@@ -83,6 +84,7 @@ def _transform_for_gui_output(
 
 def comp_search_choices() -> tuple[tuple[str, int], ...]:
     # TODO no reload functionality
+    logger.debug("[Call backend] comp_search_choices")
     q = db.DF_CRM_MASTER.lazy()
     counter = pl.int_range(0, pl.len()).over(pl.col.ma_unternehmensname)
     q = q.with_columns(
@@ -98,6 +100,7 @@ def comp_search_choices() -> tuple[tuple[str, int], ...]:
 def comp_search_get_info(
     ma_id: int,
 ) -> CompanyInfo:
+    logger.debug("[Call backend] comp_search_get_info")
     df = db.DF_CRM_MASTER.filter(pl.col.ma_id == ma_id)
     if df.height > 1 or df.height == 0:
         raise ValueError(f"Größe des zurückgelieferten Datenpakets ungültig: {df.height}")
@@ -111,6 +114,7 @@ def contact_person_search_choices(
     use_both_names: bool,
 ) -> tuple[tuple[str, int], ...]:
     # TODO no reload functionality
+    logger.debug("[Call backend] contact_person_search_choices")
     q = db.DF_CONTACT_PERSON.lazy()
     if ma_id is not None:
         q = q.filter(pl.col.ma_id == ma_id)
@@ -136,6 +140,7 @@ def contact_person_search_choices(
 def contact_person_search_get_info(
     an_id: int,
 ) -> ContactPersonInfo:
+    logger.debug("[Call backend] contact_person_search_get_info")
     df = db.DF_CONTACT_PERSON.filter(pl.col.an_id == an_id)
     if df.height > 1 or df.height == 0:
         raise ValueError(f"Größe des zurückgelieferten Datenpakets ungültig: {df.height}")
@@ -147,6 +152,7 @@ def contact_person_search_get_info(
 def insert_initial_recording(
     data: dict[str, Any],
 ) -> None:
+    logger.debug("[Call backend] insert_initial_recording")
     stmt = db.grunderfassung_unternehmen.insert().values(data)
     with db.ENGINE.begin() as conn:
         conn.execute(stmt)
@@ -156,6 +162,7 @@ def update_initial_recording(
     id_: int,
     data: dict[str, Any],
 ) -> None:
+    logger.debug("[Call backend] update_initial_recording")
     stmt = (
         db.grunderfassung_unternehmen.update()
         .where(db.grunderfassung_unternehmen.c.erfassung_id == id_)
@@ -168,6 +175,7 @@ def update_initial_recording(
 def get_initial_recording(
     id_: int,
 ) -> dict[str, Any]:
+    logger.debug("[Call backend] get_initial_recording")
     stmt = db.grunderfassung_unternehmen.select().where(
         db.grunderfassung_unternehmen.c.erfassung_id == id_
     )
@@ -190,6 +198,7 @@ class FrontpageCompany:
 
 
 def get_company_list() -> list[FrontpageCompany]:
+    logger.debug("[Call backend] get_company_list")
     stmt = sql.select(
         db.grunderfassung_unternehmen.c.erfassung_id,
         db.grunderfassung_unternehmen.c.Partnersuche__un_suche,