Fix linting error and linting config

backend/ruff.toml

@@ -13,8 +13,14 @@ ignore = [
     "TRY003",
     "EM101",
     "EM102",
-    "PLC0405",
+    "SIM108",
+    "C901",
+    "PLR0912",
+    "PLR0915",
+    "PLR0913",
+    "PLC0415",
 ]
 
 [lint.extend-per-file-ignores]
-"test*.py" = ["S101"]
+"test*.py" = ["S101", "S105", "S106", "PT011", "PLR2004"]
+"models*.py" = ["FA102"]

backend/tests/test_crud.py

@@ -1,15 +1,19 @@
-from collections.abc import Generator
+from __future__ import annotations
+
 from datetime import datetime, timedelta, timezone
+from typing import TYPE_CHECKING
 
 import pytest
 from sqlalchemy import create_engine
-from sqlalchemy.engine import Engine
 from sqlalchemy.pool import StaticPool
 from sqlmodel import Session, SQLModel
 
 from trading_journal import crud, models
 
-# TODO: If needed, add failing flow tests, but now only add happy flow.
+if TYPE_CHECKING:
+    from collections.abc import Generator
+
+    from sqlalchemy.engine import Engine
 
 
 @pytest.fixture
@@ -41,16 +45,14 @@ def make_user(session: Session, username: str = "testuser") -> int:
     return user.id
 
 
-def make_cycle(
-    session: Session, user_id: int, friendly_name: str = "Test Cycle"
-) -> int:
+def make_cycle(session: Session, user_id: int, friendly_name: str = "Test Cycle") -> int:
     cycle = models.Cycles(
         user_id=user_id,
         friendly_name=friendly_name,
         symbol="AAPL",
         underlying_currency=models.UnderlyingCurrency.USD,
         status=models.CycleStatus.OPEN,
-        start_date=datetime.now().date(),
+        start_date=datetime.now(timezone.utc).date(),
     )
     session.add(cycle)
     session.commit()
@@ -58,9 +60,7 @@ def make_cycle(
     return cycle.id
 
 
-def make_trade(
-    session: Session, user_id: int, cycle_id: int, friendly_name: str = "Test Trade"
-) -> int:
+def make_trade(session: Session, user_id: int, cycle_id: int, friendly_name: str = "Test Trade") -> int:
     trade = models.Trades(
         user_id=user_id,
         friendly_name=friendly_name,
@@ -68,8 +68,8 @@ def make_trade(
         underlying_currency=models.UnderlyingCurrency.USD,
         trade_type=models.TradeType.LONG_SPOT,
         trade_strategy=models.TradeStrategy.SPOT,
-        trade_date=datetime.now().date(),
-        trade_time_utc=datetime.now(),
+        trade_date=datetime.now(timezone.utc).date(),
+        trade_time_utc=datetime.now(timezone.utc),
         quantity=10,
         price_cents=15000,
         gross_cash_flow_cents=-150000,
@@ -113,7 +113,15 @@ def make_login_session(session: Session, created_at: datetime) -> models.Session
     return login_session
 
 
-def test_create_trade_success_with_cycle(session: Session):
+def _ensure_utc_aware(dt: datetime) -> datetime | None:
+    if dt is None:
+        return None
+    if dt.tzinfo is None:
+        return dt.replace(tzinfo=timezone.utc)
+    return dt.astimezone(timezone.utc)
+
+
+def test_create_trade_success_with_cycle(session: Session) -> None:
     user_id = make_user(session)
     cycle_id = make_cycle(session, user_id)
 
@@ -124,7 +132,7 @@ def test_create_trade_success_with_cycle(session: Session):
         "underlying_currency": models.UnderlyingCurrency.USD,
         "trade_type": models.TradeType.LONG_SPOT,
         "trade_strategy": models.TradeStrategy.SPOT,
-        "trade_time_utc": datetime.now(),
+        "trade_time_utc": datetime.now(timezone.utc),
         "quantity": 10,
         "price_cents": 15000,
         "gross_cash_flow_cents": -150000,
@@ -154,7 +162,7 @@ def test_create_trade_success_with_cycle(session: Session):
     assert actual_trade.cycle_id == trade_data["cycle_id"]
 
 
-def test_create_trade_with_auto_created_cycle(session: Session):
+def test_create_trade_with_auto_created_cycle(session: Session) -> None:
     user_id = make_user(session)
 
     trade_data = {
@@ -164,7 +172,7 @@ def test_create_trade_with_auto_created_cycle(session: Session):
         "underlying_currency": models.UnderlyingCurrency.USD,
         "trade_type": models.TradeType.LONG_SPOT,
         "trade_strategy": models.TradeStrategy.SPOT,
-        "trade_time_utc": datetime.now(),
+        "trade_time_utc": datetime.now(timezone.utc),
         "quantity": 5,
         "price_cents": 15500,
     }
@@ -196,7 +204,7 @@ def test_create_trade_with_auto_created_cycle(session: Session):
     assert auto_cycle.friendly_name.startswith("Auto-created Cycle by trade")
 
 
-def test_create_trade_missing_required_fields(session: Session):
+def test_create_trade_missing_required_fields(session: Session) -> None:
     user_id = make_user(session)
 
     base_trade_data = {
@@ -206,7 +214,7 @@ def test_create_trade_missing_required_fields(session: Session):
         "underlying_currency": models.UnderlyingCurrency.USD,
         "trade_type": models.TradeType.LONG_SPOT,
         "trade_strategy": models.TradeStrategy.SPOT,
-        "trade_time_utc": datetime.now(),
+        "trade_time_utc": datetime.now(timezone.utc),
         "quantity": 10,
         "price_cents": 15000,
     }
@@ -254,7 +262,7 @@ def test_create_trade_missing_required_fields(session: Session):
     assert "price_cents is required" in str(excinfo.value)
 
 
-def test_get_trade_by_id(session: Session):
+def test_get_trade_by_id(session: Session) -> None:
     user_id = make_user(session)
     cycle_id = make_cycle(session, user_id)
     trade_data = {
@@ -264,8 +272,8 @@ def test_get_trade_by_id(session: Session):
         "underlying_currency": models.UnderlyingCurrency.USD,
         "trade_type": models.TradeType.LONG_SPOT,
         "trade_strategy": models.TradeStrategy.SPOT,
-        "trade_date": datetime.now().date(),
-        "trade_time_utc": datetime.now(),
+        "trade_date": datetime.now(timezone.utc).date(),
+        "trade_time_utc": datetime.now(timezone.utc),
         "quantity": 10,
         "price_cents": 15000,
         "gross_cash_flow_cents": -150000,
@@ -291,7 +299,7 @@ def test_get_trade_by_id(session: Session):
     assert trade.trade_date == trade_data["trade_date"]
 
 
-def test_get_trade_by_user_id_and_friendly_name(session: Session):
+def test_get_trade_by_user_id_and_friendly_name(session: Session) -> None:
     user_id = make_user(session)
     cycle_id = make_cycle(session, user_id)
     friendly_name = "Unique Trade Name"
@@ -302,8 +310,8 @@ def test_get_trade_by_user_id_and_friendly_name(session: Session):
         "underlying_currency": models.UnderlyingCurrency.USD,
         "trade_type": models.TradeType.LONG_SPOT,
         "trade_strategy": models.TradeStrategy.SPOT,
-        "trade_date": datetime.now().date(),
-        "trade_time_utc": datetime.now(),
+        "trade_date": datetime.now(timezone.utc).date(),
+        "trade_time_utc": datetime.now(timezone.utc),
         "quantity": 10,
         "price_cents": 15000,
         "gross_cash_flow_cents": -150000,
@@ -318,7 +326,7 @@ def test_get_trade_by_user_id_and_friendly_name(session: Session):
     assert trade.user_id == user_id
 
 
-def test_get_trades_by_user_id(session: Session):
+def test_get_trades_by_user_id(session: Session) -> None:
     user_id = make_user(session)
     cycle_id = make_cycle(session, user_id)
     trade_data_1 = {
@@ -328,8 +336,8 @@ def test_get_trades_by_user_id(session: Session):
         "underlying_currency": models.UnderlyingCurrency.USD,
         "trade_type": models.TradeType.LONG_SPOT,
         "trade_strategy": models.TradeStrategy.SPOT,
-        "trade_date": datetime.now().date(),
-        "trade_time_utc": datetime.now(),
+        "trade_date": datetime.now(timezone.utc).date(),
+        "trade_time_utc": datetime.now(timezone.utc),
         "quantity": 10,
         "price_cents": 15000,
         "gross_cash_flow_cents": -150000,
@@ -344,8 +352,8 @@ def test_get_trades_by_user_id(session: Session):
         "underlying_currency": models.UnderlyingCurrency.USD,
         "trade_type": models.TradeType.SHORT_SPOT,
         "trade_strategy": models.TradeStrategy.SPOT,
-        "trade_date": datetime.now().date(),
-        "trade_time_utc": datetime.now(),
+        "trade_date": datetime.now(timezone.utc).date(),
+        "trade_time_utc": datetime.now(timezone.utc),
         "quantity": 5,
         "price_cents": 280000,
         "gross_cash_flow_cents": 1400000,
@@ -362,7 +370,7 @@ def test_get_trades_by_user_id(session: Session):
     assert friendly_names == {"Trade One", "Trade Two"}
 
 
-def test_update_trade_note(session: Session):
+def test_update_trade_note(session: Session) -> None:
     user_id = make_user(session)
     cycle_id = make_cycle(session, user_id)
     trade_id = make_trade(session, user_id, cycle_id)
@@ -379,7 +387,7 @@ def test_update_trade_note(session: Session):
     assert actual_trade.notes == new_note
 
 
-def test_invalidate_trade(session: Session):
+def test_invalidate_trade(session: Session) -> None:
     user_id = make_user(session)
     cycle_id = make_cycle(session, user_id)
     trade_id = make_trade(session, user_id, cycle_id)
@@ -395,7 +403,7 @@ def test_invalidate_trade(session: Session):
     assert actual_trade.is_invalidated is True
 
 
-def test_replace_trade(session: Session):
+def test_replace_trade(session: Session) -> None:
     user_id = make_user(session)
     cycle_id = make_cycle(session, user_id)
     old_trade_id = make_trade(session, user_id, cycle_id)
@@ -407,7 +415,7 @@ def test_replace_trade(session: Session):
         "underlying_currency": models.UnderlyingCurrency.USD,
         "trade_type": models.TradeType.LONG_SPOT,
         "trade_strategy": models.TradeStrategy.SPOT,
-        "trade_time_utc": datetime.now(),
+        "trade_time_utc": datetime.now(timezone.utc),
         "quantity": 20,
         "price_cents": 25000,
     }
@@ -438,7 +446,7 @@ def test_replace_trade(session: Session):
     assert actual_new_trade.replaced_by_trade_id == old_trade_id
 
 
-def test_create_cycle(session: Session):
+def test_create_cycle(session: Session) -> None:
     user_id = make_user(session)
     cycle_data = {
         "user_id": user_id,
@@ -446,7 +454,7 @@ def test_create_cycle(session: Session):
         "symbol": "GOOGL",
         "underlying_currency": models.UnderlyingCurrency.USD,
         "status": models.CycleStatus.OPEN,
-        "start_date": datetime.now().date(),
+        "start_date": datetime.now(timezone.utc).date(),
     }
     cycle = crud.create_cycle(session, cycle_data)
     assert cycle.id is not None
@@ -467,7 +475,7 @@ def test_create_cycle(session: Session):
     assert actual_cycle.start_date == cycle_data["start_date"]
 
 
-def test_update_cycle(session: Session):
+def test_update_cycle(session: Session) -> None:
     user_id = make_user(session)
     cycle_id = make_cycle(session, user_id, friendly_name="Initial Cycle Name")
 
@@ -488,7 +496,7 @@ def test_update_cycle(session: Session):
     assert actual_cycle.status == update_data["status"]
 
 
-def test_update_cycle_immutable_fields(session: Session):
+def test_update_cycle_immutable_fields(session: Session) -> None:
     user_id = make_user(session)
     cycle_id = make_cycle(session, user_id, friendly_name="Initial Cycle Name")
 
@@ -496,8 +504,8 @@ def test_update_cycle_immutable_fields(session: Session):
     update_data = {
         "id": cycle_id + 1,  # Trying to change the ID
         "user_id": user_id + 1,  # Trying to change the user_id
-        "start_date": datetime(2020, 1, 1).date(),  # Trying to change start_date
-        "created_at": datetime(2020, 1, 1),  # Trying to change created_at
+        "start_date": datetime(2020, 1, 1, tzinfo=timezone.utc).date(),  # Trying to change start_date
+        "created_at": datetime(2020, 1, 1, tzinfo=timezone.utc),  # Trying to change created_at
         "friendly_name": "Valid Update",  # Valid field to update
     }
 
@@ -511,7 +519,7 @@ def test_update_cycle_immutable_fields(session: Session):
     )
 
 
-def test_create_user(session: Session):
+def test_create_user(session: Session) -> None:
     user_data = {
         "username": "newuser",
         "password_hash": "newhashedpassword",
@@ -528,7 +536,7 @@ def test_create_user(session: Session):
     assert actual_user.password_hash == user_data["password_hash"]
 
 
-def test_update_user(session: Session):
+def test_update_user(session: Session) -> None:
     user_id = make_user(session, username="updatableuser")
 
     update_data = {
@@ -545,14 +553,14 @@ def test_update_user(session: Session):
     assert actual_user.password_hash == update_data["password_hash"]
 
 
-def test_update_user_immutable_fields(session: Session):
+def test_update_user_immutable_fields(session: Session) -> None:
     user_id = make_user(session, username="immutableuser")
 
     # Attempt to update immutable fields
     update_data = {
         "id": user_id + 1,  # Trying to change the ID
         "username": "newusername",  # Trying to change the username
-        "created_at": datetime(2020, 1, 1),  # Trying to change created_at
+        "created_at": datetime(2020, 1, 1, tzinfo=timezone.utc),  # Trying to change created_at
         "password_hash": "validupdate",  # Valid field to update
     }
 
@@ -566,7 +574,7 @@ def test_update_user_immutable_fields(session: Session):
 
 
 # login sessions
-def test_create_login_session(session: Session):
+def test_create_login_session(session: Session) -> None:
     user_id = make_user(session, username="testuser")
     session_token_hash = "sessiontokenhashed"
     login_session = crud.create_login_session(session, user_id, session_token_hash)
@@ -575,7 +583,7 @@ def test_create_login_session(session: Session):
     assert login_session.session_token_hash == session_token_hash
 
 
-def test_create_login_session_with_invalid_user(session: Session):
+def test_create_login_session_with_invalid_user(session: Session) -> None:
     invalid_user_id = 9999  # Assuming this user ID does not exist
     session_token_hash = "sessiontokenhashed"
     with pytest.raises(ValueError) as excinfo:
@@ -583,40 +591,34 @@ def test_create_login_session_with_invalid_user(session: Session):
     assert "user_id does not exist" in str(excinfo.value)
 
 
-def test_get_login_session_by_token_and_user_id(session: Session):
-    now = datetime.now()
+def test_get_login_session_by_token_and_user_id(session: Session) -> None:
+    now = datetime.now(timezone.utc)
     created_session = make_login_session(session, now)
-    fetched_session = crud.get_login_session_by_token_hash_and_user_id(
-        session, created_session.session_token_hash, created_session.user_id
-    )
+    fetched_session = crud.get_login_session_by_token_hash_and_user_id(session, created_session.session_token_hash, created_session.user_id)
     assert fetched_session is not None
     assert fetched_session.id == created_session.id
     assert fetched_session.user_id == created_session.user_id
     assert fetched_session.session_token_hash == created_session.session_token_hash
 
 
-def test_update_login_session(session: Session):
-    now = datetime.now()
+def test_update_login_session(session: Session) -> None:
+    now = datetime.now(timezone.utc)
     created_session = make_login_session(session, now)
 
     update_data = {
         "last_seen_at": now + timedelta(hours=1),
         "last_used_ip": "192.168.1.1",
     }
-    updated_session = crud.update_login_session(
-        session, created_session.session_token_hash, update_data
-    )
+    updated_session = crud.update_login_session(session, created_session.session_token_hash, update_data)
     assert updated_session is not None
-    assert updated_session.last_seen_at == update_data["last_seen_at"]
+    assert _ensure_utc_aware(updated_session.last_seen_at) == update_data["last_seen_at"]
     assert updated_session.last_used_ip == update_data["last_used_ip"]
 
 
-def test_delete_login_session(session: Session):
-    now = datetime.now()
+def test_delete_login_session(session: Session) -> None:
+    now = datetime.now(timezone.utc)
     created_session = make_login_session(session, now)
 
     crud.delete_login_session(session, created_session.session_token_hash)
-    deleted_session = crud.get_login_session_by_token_hash_and_user_id(
-        session, created_session.session_token_hash, created_session.user_id
-    )
+    deleted_session = crud.get_login_session_by_token_hash_and_user_id(session, created_session.session_token_hash, created_session.user_id)
     assert deleted_session is None

backend/tests/test_db.py

@@ -46,8 +46,7 @@ def database_ctx(db: Database) -> Generator[Database, None, None]:
 
 def test_select_one_executes() -> None:
     db = create_database(None)  # in-memory by default
-    with database_ctx(db):
-        with session_ctx(db) as session:
+    with database_ctx(db), session_ctx(db) as session:
         val = session.exec(text("SELECT 1")).scalar_one()
     assert int(val) == 1
 
@@ -56,9 +55,7 @@ def test_in_memory_persists_across_sessions_when_using_staticpool() -> None:
     db = create_database(None)  # in-memory with StaticPool
     with database_ctx(db):
         with session_ctx(db) as s1:
-            s1.exec(
-                text("CREATE TABLE IF NOT EXISTS t (id INTEGER PRIMARY KEY, val TEXT);")
-            )
+            s1.exec(text("CREATE TABLE IF NOT EXISTS t (id INTEGER PRIMARY KEY, val TEXT);"))
             s1.exec(text("INSERT INTO t (val) VALUES (:v)").bindparams(v="hello"))
         with session_ctx(db) as s2:
             got = s2.exec(text("SELECT val FROM t")).scalar_one()
@@ -67,9 +64,8 @@ def test_in_memory_persists_across_sessions_when_using_staticpool() -> None:
 
 def test_sqlite_pragmas_applied() -> None:
     db = create_database(None)
-    with database_ctx(db):
+    with database_ctx(db), session_ctx(db) as session:
         # PRAGMA returns integer 1 when foreign_keys ON
-        with session_ctx(db) as session:
         fk = session.exec(text("PRAGMA foreign_keys")).scalar_one()
     assert int(fk) == 1
 
@@ -82,16 +78,8 @@ def test_rollback_on_exception() -> None:
         # Create table then insert and raise inside the same session to force rollback
         with pytest.raises(RuntimeError):  # noqa: PT012, SIM117
             with session_ctx(db) as s:
-                s.exec(
-                    text(
-                        "CREATE TABLE IF NOT EXISTS t_rb (id INTEGER PRIMARY KEY, val TEXT);"
-                    )
-                )
-                s.exec(
-                    text("INSERT INTO t_rb (val) VALUES (:v)").bindparams(
-                        v="will_rollback"
-                    )
-                )
+                s.exec(text("CREATE TABLE IF NOT EXISTS t_rb (id INTEGER PRIMARY KEY, val TEXT);"))
+                s.exec(text("INSERT INTO t_rb (val) VALUES (:v)").bindparams(v="will_rollback"))
                 # simulate handler error -> should trigger rollback in get_session
                 raise RuntimeError("simulated failure")
 

backend/tests/test_db_migration.py

@@ -89,12 +89,10 @@ def test_run_migrations_0_to_1(monkeypatch: pytest.MonkeyPatch) -> None:
         with engine.connect() as conn:
             # check tables exist
             rows = conn.execute(
-                text("SELECT name FROM sqlite_master WHERE type='table'")
+                text("SELECT name FROM sqlite_master WHERE type='table'"),
             ).fetchall()
             found_tables = {r[0] for r in rows}
-            assert set(expected_schema.keys()).issubset(found_tables), (
-                f"missing tables: {set(expected_schema.keys()) - found_tables}"
-            )
+            assert set(expected_schema.keys()).issubset(found_tables), f"missing tables: {set(expected_schema.keys()) - found_tables}"
 
             # check user_version
             uv = conn.execute(text("PRAGMA user_version")).fetchone()
@@ -103,14 +101,9 @@ def test_run_migrations_0_to_1(monkeypatch: pytest.MonkeyPatch) -> None:
 
             # validate each table columns
             for tbl_name, cols in expected_schema.items():
-                info_rows = conn.execute(
-                    text(f"PRAGMA table_info({tbl_name})")
-                ).fetchall()
+                info_rows = conn.execute(text(f"PRAGMA table_info({tbl_name})")).fetchall()
                 # map: name -> (type, notnull, pk)
-                actual = {
-                    r[1]: ((r[2] or "").upper(), int(r[3]), int(r[5]))
-                    for r in info_rows
-                }
+                actual = {r[1]: ((r[2] or "").upper(), int(r[3]), int(r[5])) for r in info_rows}
                 for colname, (exp_type, exp_notnull, exp_pk) in cols.items():
                     assert colname in actual, f"{tbl_name}: missing column {colname}"
                     act_type, act_notnull, act_pk = actual[colname]
@@ -122,20 +115,12 @@ def test_run_migrations_0_to_1(monkeypatch: pytest.MonkeyPatch) -> None:
                     assert exp_type in act_base or act_base in exp_type, (
                         f"type mismatch {tbl_name}.{colname}: expected {exp_type}, got {act_base}"
                     )
-                    assert act_notnull == exp_notnull, (
-                        f"notnull mismatch {tbl_name}.{colname}: expected {exp_notnull}, got {act_notnull}"
-                    )
-                    assert act_pk == exp_pk, (
-                        f"pk mismatch {tbl_name}.{colname}: expected {exp_pk}, got {act_pk}"
-                    )
+                    assert act_notnull == exp_notnull, f"notnull mismatch {tbl_name}.{colname}: expected {exp_notnull}, got {act_notnull}"
+                    assert act_pk == exp_pk, f"pk mismatch {tbl_name}.{colname}: expected {exp_pk}, got {act_pk}"
             for tbl_name, fks in expected_fks.items():
-                fk_rows = conn.execute(
-                    text(f"PRAGMA foreign_key_list('{tbl_name}')")
-                ).fetchall()
+                fk_rows = conn.execute(text(f"PRAGMA foreign_key_list('{tbl_name}')")).fetchall()
                 # fk_rows columns: (id, seq, table, from, to, on_update, on_delete, match)
-                actual_fk_list = [
-                    {"table": r[2], "from": r[3], "to": r[4]} for r in fk_rows
-                ]
+                actual_fk_list = [{"table": r[2], "from": r[3], "to": r[4]} for r in fk_rows]
                 for efk in fks:
                     assert efk in actual_fk_list, f"missing FK on {tbl_name}: {efk}"
     finally:

backend/tests/test_settings.py

@@ -12,7 +12,7 @@ def test_default_settings(monkeypatch: pytest.MonkeyPatch) -> None:
 
     s = load_settings()
     assert s.host == "0.0.0.0"  # noqa: S104
-    assert s.port == 8000  # noqa: PLR2004
+    assert s.port == 8000
     assert s.workers == 1
     assert s.log_level == "info"
 
@@ -26,8 +26,8 @@ def test_env_overrides(monkeypatch: pytest.MonkeyPatch) -> None:
 
     s = load_settings()
     assert s.host == "127.0.0.1"
-    assert s.port == 9000  # noqa: PLR2004
-    assert s.workers == 3  # noqa: PLR2004
+    assert s.port == 9000
+    assert s.workers == 3
     assert s.log_level == "debug"
 
 
@@ -40,6 +40,6 @@ def test_yaml_config_file(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> No
 
     s = load_settings()
     assert s.host == "10.0.0.5"
-    assert s.port == 8088  # noqa: PLR2004
-    assert s.workers == 5  # noqa: PLR2004
+    assert s.port == 8088
+    assert s.workers == 5
     assert s.log_level == "debug"

backend/trading_journal/crud.py

@@ -1,13 +1,18 @@
+from __future__ import annotations
+
 from datetime import datetime, timedelta, timezone
-from typing import Mapping
+from typing import TYPE_CHECKING
 
 from sqlalchemy.exc import IntegrityError
 from sqlmodel import Session, select
 
 from trading_journal import models
 
+if TYPE_CHECKING:
+    from collections.abc import Mapping
 
-def _check_enum(enum_cls, value, field_name: str):
+
+def _check_enum(enum_cls: any, value: any, field_name: str) -> any:
     if value is None:
         raise ValueError(f"{field_name} is required")
     # already an enum member
@@ -34,19 +39,13 @@ def create_trade(session: Session, trade_data: Mapping) -> models.Trades:
         raise ValueError("symbol is required")
     if "underlying_currency" not in payload:
         raise ValueError("underlying_currency is required")
-    payload["underlying_currency"] = _check_enum(
-        models.UnderlyingCurrency, payload["underlying_currency"], "underlying_currency"
-    )
+    payload["underlying_currency"] = _check_enum(models.UnderlyingCurrency, payload["underlying_currency"], "underlying_currency")
     if "trade_type" not in payload:
         raise ValueError("trade_type is required")
-    payload["trade_type"] = _check_enum(
-        models.TradeType, payload["trade_type"], "trade_type"
-    )
+    payload["trade_type"] = _check_enum(models.TradeType, payload["trade_type"], "trade_type")
     if "trade_strategy" not in payload:
         raise ValueError("trade_strategy is required")
-    payload["trade_strategy"] = _check_enum(
-        models.TradeStrategy, payload["trade_strategy"], "trade_strategy"
-    )
+    payload["trade_strategy"] = _check_enum(models.TradeStrategy, payload["trade_strategy"], "trade_strategy")
     # trade_time_utc is the creation moment: always set to now (caller shouldn't provide)
     now = datetime.now(timezone.utc)
     payload.pop("trade_time_utc", None)
@@ -67,9 +66,7 @@ def create_trade(session: Session, trade_data: Mapping) -> models.Trades:
     if "gross_cash_flow_cents" not in payload:
         payload["gross_cash_flow_cents"] = -quantity * price_cents
     if "net_cash_flow_cents" not in payload:
-        payload["net_cash_flow_cents"] = (
-            payload["gross_cash_flow_cents"] - commission_cents
-        )
+        payload["net_cash_flow_cents"] = payload["gross_cash_flow_cents"] - commission_cents
 
     # If no cycle_id provided, create Cycle instance but don't call create_cycle()
     created_cycle = None
@@ -78,8 +75,7 @@ def create_trade(session: Session, trade_data: Mapping) -> models.Trades:
             "user_id": user_id,
             "symbol": payload["symbol"],
             "underlying_currency": payload["underlying_currency"],
-            "friendly_name": "Auto-created Cycle by trade "
-            + payload.get("friendly_name", ""),
+            "friendly_name": "Auto-created Cycle by trade " + payload.get("friendly_name", ""),
             "status": models.CycleStatus.OPEN,
             "start_date": payload["trade_date"],
         }
@@ -92,7 +88,6 @@ def create_trade(session: Session, trade_data: Mapping) -> models.Trades:
         cycle = session.get(models.Cycles, cycle_id)
         if cycle is None:
             raise ValueError("cycle_id does not exist")
-        else:
         if cycle.user_id != user_id:
             raise ValueError("cycle.user_id does not match trade.user_id")
 
@@ -119,9 +114,7 @@ def get_trade_by_id(session: Session, trade_id: int) -> models.Trades | None:
     return session.get(models.Trades, trade_id)
 
 
-def get_trade_by_user_id_and_friendly_name(
-    session: Session, user_id: int, friendly_name: str
-) -> models.Trades | None:
+def get_trade_by_user_id_and_friendly_name(session: Session, user_id: int, friendly_name: str) -> models.Trades | None:
     statement = select(models.Trades).where(
         models.Trades.user_id == user_id,
         models.Trades.friendly_name == friendly_name,
@@ -169,17 +162,14 @@ def invalidate_trade(session: Session, trade_id: int) -> models.Trades:
     return trade
 
 
-def replace_trade(
-    session: Session, old_trade_id: int, new_trade_data: Mapping
-) -> models.Trades:
+def replace_trade(session: Session, old_trade_id: int, new_trade_data: Mapping) -> models.Trades:
     invalidate_trade(session, old_trade_id)
     if hasattr(new_trade_data, "dict"):
         data = new_trade_data.dict(exclude_unset=True)
     else:
         data = dict(new_trade_data)
     data["replaced_by_trade_id"] = old_trade_id
-    new_trade = create_trade(session, data)
-    return new_trade
+    return create_trade(session, data)
 
 
 # Cycles
@@ -196,9 +186,7 @@ def create_cycle(session: Session, cycle_data: Mapping) -> models.Cycles:
         raise ValueError("symbol is required")
     if "underlying_currency" not in payload:
         raise ValueError("underlying_currency is required")
-    payload["underlying_currency"] = _check_enum(
-        models.UnderlyingCurrency, payload["underlying_currency"], "underlying_currency"
-    )
+    payload["underlying_currency"] = _check_enum(models.UnderlyingCurrency, payload["underlying_currency"], "underlying_currency")
     if "status" not in payload:
         raise ValueError("status is required")
     payload["status"] = _check_enum(models.CycleStatus, payload["status"], "status")
@@ -219,9 +207,7 @@ def create_cycle(session: Session, cycle_data: Mapping) -> models.Cycles:
 IMMUTABLE_CYCLE_FIELDS = {"id", "user_id", "start_date", "created_at"}
 
 
-def update_cycle(
-    session: Session, cycle_id: int, update_data: Mapping
-) -> models.Cycles:
+def update_cycle(session: Session, cycle_id: int, update_data: Mapping) -> models.Cycles:
     cycle: models.Cycles | None = session.get(models.Cycles, cycle_id)
     if cycle is None:
         raise ValueError("cycle_id does not exist")
@@ -237,9 +223,9 @@ def update_cycle(
         if k not in allowed:
             continue
         if k == "underlying_currency":
-            v = _check_enum(models.UnderlyingCurrency, v, "underlying_currency")
+            v = _check_enum(models.UnderlyingCurrency, v, "underlying_currency")  # noqa: PLW2901
         if k == "status":
-            v = _check_enum(models.CycleStatus, v, "status")
+            v = _check_enum(models.CycleStatus, v, "status")  # noqa: PLW2901
         setattr(cycle, k, v)
     session.add(cycle)
     try:
@@ -337,9 +323,7 @@ def create_login_session(
     return s
 
 
-def get_login_session_by_token_hash_and_user_id(
-    session: Session, session_token_hash: str, user_id: int
-) -> models.Sessions | None:
+def get_login_session_by_token_hash_and_user_id(session: Session, session_token_hash: str, user_id: int) -> models.Sessions | None:
     statement = select(models.Sessions).where(
         models.Sessions.session_token_hash == session_token_hash,
         models.Sessions.user_id == user_id,
@@ -352,14 +336,12 @@ def get_login_session_by_token_hash_and_user_id(
 IMMUTABLE_SESSION_FIELDS = {"id", "user_id", "session_token_hash", "created_at"}
 
 
-def update_login_session(
-    session: Session, session_token_hashed: str, update_session: Mapping
-) -> models.Sessions | None:
+def update_login_session(session: Session, session_token_hashed: str, update_session: Mapping) -> models.Sessions | None:
     login_session: models.Sessions | None = session.exec(
         select(models.Sessions).where(
             models.Sessions.session_token_hash == session_token_hashed,
             models.Sessions.expires_at > datetime.now(timezone.utc),
-        )
+        ),
     ).first()
     if login_session is None:
         return None
@@ -385,7 +367,7 @@ def delete_login_session(session: Session, session_token_hash: str) -> None:
     login_session: models.Sessions | None = session.exec(
         select(models.Sessions).where(
             models.Sessions.session_token_hash == session_token_hash,
-        )
+        ),
     ).first()
     if login_session is None:
         return

backend/trading_journal/db.py

@@ -24,17 +24,13 @@ class Database:
     ) -> None:
         self._database_url = database_url or "sqlite:///:memory:"
 
-        default_connect = (
-            {"check_same_thread": False, "timeout": 30}
-            if self._database_url.startswith("sqlite")
-            else {}
-        )
+        default_connect = {"check_same_thread": False, "timeout": 30} if self._database_url.startswith("sqlite") else {}
         merged_connect = {**default_connect, **(connect_args or {})}
 
         if self._database_url == "sqlite:///:memory:":
             logger = logging.getLogger(__name__)
             logger.warning(
-                "Using in-memory SQLite database; all data will be lost when the application stops."
+                "Using in-memory SQLite database; all data will be lost when the application stops.",
             )
             self._engine = create_engine(
                 self._database_url,
@@ -43,15 +39,11 @@ class Database:
                 poolclass=StaticPool,
             )
         else:
-            self._engine = create_engine(
-                self._database_url, echo=echo, connect_args=merged_connect
-            )
+            self._engine = create_engine(self._database_url, echo=echo, connect_args=merged_connect)
 
         if self._database_url.startswith("sqlite"):
 
-            def _enable_sqlite_pragmas(
-                dbapi_conn: DBAPIConnection, _connection_record: object
-            ) -> None:
+            def _enable_sqlite_pragmas(dbapi_conn: DBAPIConnection, _connection_record: object) -> None:
                 try:
                     cur = dbapi_conn.cursor()
                     cur.execute("PRAGMA journal_mode=WAL;")

backend/trading_journal/db_migration.py

@@ -60,7 +60,7 @@ def run_migrations(engine: Engine, target_version: int | None = None) -> int:
                 fn = MIGRATIONS.get(cur_version)
                 if fn is None:
                     raise RuntimeError(
-                        f"No migration from {cur_version} -> {cur_version + 1}"
+                        f"No migration from {cur_version} -> {cur_version + 1}",
                     )
                 # call migration with Engine (fn should use transactions)
                 fn(engine)

backend/trading_journal/models.py

@@ -1,4 +1,4 @@
-from datetime import date, datetime  # noqa: TC003
+from datetime import date, datetime
 from enum import Enum
 
 from sqlmodel import (
@@ -65,28 +65,18 @@ class FundingSource(str, Enum):
 
 class Trades(SQLModel, table=True):
     __tablename__ = "trades"
-    __table_args__ = (
-        UniqueConstraint(
-            "user_id", "friendly_name", name="uq_trades_user_friendly_name"
-        ),
-    )
+    __table_args__ = (UniqueConstraint("user_id", "friendly_name", name="uq_trades_user_friendly_name"),)
 
     id: int | None = Field(default=None, primary_key=True)
     user_id: int = Field(foreign_key="users.id", nullable=False, index=True)
     # allow null while user may omit friendly_name; uniqueness enforced per-user by constraint
-    friendly_name: str | None = Field(
-        default=None, sa_column=Column(Text, nullable=True)
-    )
+    friendly_name: str | None = Field(default=None, sa_column=Column(Text, nullable=True))
     symbol: str = Field(sa_column=Column(Text, nullable=False))
-    underlying_currency: UnderlyingCurrency = Field(
-        sa_column=Column(Text, nullable=False)
-    )
+    underlying_currency: UnderlyingCurrency = Field(sa_column=Column(Text, nullable=False))
     trade_type: TradeType = Field(sa_column=Column(Text, nullable=False))
     trade_strategy: TradeStrategy = Field(sa_column=Column(Text, nullable=False))
     trade_date: date = Field(sa_column=Column(Date, nullable=False))
-    trade_time_utc: datetime = Field(
-        sa_column=Column(DateTime(timezone=True), nullable=False)
-    )
+    trade_time_utc: datetime = Field(sa_column=Column(DateTime(timezone=True), nullable=False))
     expiry_date: date | None = Field(default=None, nullable=True)
     strike_price_cents: int | None = Field(default=None, nullable=True)
     quantity: int = Field(sa_column=Column(Integer, nullable=False))
@@ -95,36 +85,22 @@ class Trades(SQLModel, table=True):
     commission_cents: int = Field(sa_column=Column(Integer, nullable=False))
     net_cash_flow_cents: int = Field(sa_column=Column(Integer, nullable=False))
     is_invalidated: bool = Field(default=False, nullable=False)
-    invalidated_at: datetime | None = Field(
-        default=None, sa_column=Column(DateTime(timezone=True), nullable=True)
-    )
-    replaced_by_trade_id: int | None = Field(
-        default=None, foreign_key="trades.id", nullable=True
-    )
+    invalidated_at: datetime | None = Field(default=None, sa_column=Column(DateTime(timezone=True), nullable=True))
+    replaced_by_trade_id: int | None = Field(default=None, foreign_key="trades.id", nullable=True)
     notes: str | None = Field(default=None, sa_column=Column(Text, nullable=True))
-    cycle_id: int | None = Field(
-        default=None, foreign_key="cycles.id", nullable=True, index=True
-    )
+    cycle_id: int | None = Field(default=None, foreign_key="cycles.id", nullable=True, index=True)
     cycle: "Cycles" = Relationship(back_populates="trades")
 
 
 class Cycles(SQLModel, table=True):
     __tablename__ = "cycles"
-    __table_args__ = (
-        UniqueConstraint(
-            "user_id", "friendly_name", name="uq_cycles_user_friendly_name"
-        ),
-    )
+    __table_args__ = (UniqueConstraint("user_id", "friendly_name", name="uq_cycles_user_friendly_name"),)
 
     id: int | None = Field(default=None, primary_key=True)
     user_id: int = Field(foreign_key="users.id", nullable=False, index=True)
-    friendly_name: str | None = Field(
-        default=None, sa_column=Column(Text, nullable=True)
-    )
+    friendly_name: str | None = Field(default=None, sa_column=Column(Text, nullable=True))
     symbol: str = Field(sa_column=Column(Text, nullable=False))
-    underlying_currency: UnderlyingCurrency = Field(
-        sa_column=Column(Text, nullable=False)
-    )
+    underlying_currency: UnderlyingCurrency = Field(sa_column=Column(Text, nullable=False))
     status: CycleStatus = Field(sa_column=Column(Text, nullable=False))
     funding_source: FundingSource = Field(sa_column=Column(Text, nullable=True))
     capital_exposure_cents: int | None = Field(default=None, nullable=True)
@@ -149,17 +125,9 @@ class Sessions(SQLModel, table=True):
     id: int | None = Field(default=None, primary_key=True)
     user_id: int = Field(foreign_key="users.id", nullable=False, index=True)
     session_token_hash: str = Field(sa_column=Column(Text, nullable=False, unique=True))
-    created_at: datetime = Field(
-        sa_column=Column(DateTime(timezone=True), nullable=False)
-    )
-    expires_at: datetime = Field(
-        sa_column=Column(DateTime(timezone=True), nullable=False, index=True)
-    )
-    last_seen_at: datetime | None = Field(
-        sa_column=Column(DateTime(timezone=True), nullable=True)
-    )
-    last_used_ip: str | None = Field(
-        default=None, sa_column=Column(Text, nullable=True)
-    )
+    created_at: datetime = Field(sa_column=Column(DateTime(timezone=True), nullable=False))
+    expires_at: datetime = Field(sa_column=Column(DateTime(timezone=True), nullable=False, index=True))
+    last_seen_at: datetime | None = Field(sa_column=Column(DateTime(timezone=True), nullable=True))
+    last_used_ip: str | None = Field(default=None, sa_column=Column(Text, nullable=True))
     user_agent: str | None = Field(default=None, sa_column=Column(Text, nullable=True))
     device_name: str | None = Field(default=None, sa_column=Column(Text, nullable=True))

backend/trading_journal/models_v1.py

@@ -1,4 +1,4 @@
-from datetime import date, datetime  # noqa: TC003
+from datetime import date, datetime
 from enum import Enum
 
 from sqlmodel import (
@@ -65,28 +65,18 @@ class FundingSource(str, Enum):
 
 class Trades(SQLModel, table=True):
     __tablename__ = "trades"
-    __table_args__ = (
-        UniqueConstraint(
-            "user_id", "friendly_name", name="uq_trades_user_friendly_name"
-        ),
-    )
+    __table_args__ = (UniqueConstraint("user_id", "friendly_name", name="uq_trades_user_friendly_name"),)
 
     id: int | None = Field(default=None, primary_key=True)
     user_id: int = Field(foreign_key="users.id", nullable=False, index=True)
     # allow null while user may omit friendly_name; uniqueness enforced per-user by constraint
-    friendly_name: str | None = Field(
-        default=None, sa_column=Column(Text, nullable=True)
-    )
+    friendly_name: str | None = Field(default=None, sa_column=Column(Text, nullable=True))
     symbol: str = Field(sa_column=Column(Text, nullable=False))
-    underlying_currency: UnderlyingCurrency = Field(
-        sa_column=Column(Text, nullable=False)
-    )
+    underlying_currency: UnderlyingCurrency = Field(sa_column=Column(Text, nullable=False))
     trade_type: TradeType = Field(sa_column=Column(Text, nullable=False))
     trade_strategy: TradeStrategy = Field(sa_column=Column(Text, nullable=False))
     trade_date: date = Field(sa_column=Column(Date, nullable=False))
-    trade_time_utc: datetime = Field(
-        sa_column=Column(DateTime(timezone=True), nullable=False)
-    )
+    trade_time_utc: datetime = Field(sa_column=Column(DateTime(timezone=True), nullable=False))
     expiry_date: date | None = Field(default=None, nullable=True)
     strike_price_cents: int | None = Field(default=None, nullable=True)
     quantity: int = Field(sa_column=Column(Integer, nullable=False))
@@ -95,36 +85,22 @@ class Trades(SQLModel, table=True):
     commission_cents: int = Field(sa_column=Column(Integer, nullable=False))
     net_cash_flow_cents: int = Field(sa_column=Column(Integer, nullable=False))
     is_invalidated: bool = Field(default=False, nullable=False)
-    invalidated_at: datetime | None = Field(
-        default=None, sa_column=Column(DateTime(timezone=True), nullable=True)
-    )
-    replaced_by_trade_id: int | None = Field(
-        default=None, foreign_key="trades.id", nullable=True
-    )
+    invalidated_at: datetime | None = Field(default=None, sa_column=Column(DateTime(timezone=True), nullable=True))
+    replaced_by_trade_id: int | None = Field(default=None, foreign_key="trades.id", nullable=True)
     notes: str | None = Field(default=None, sa_column=Column(Text, nullable=True))
-    cycle_id: int | None = Field(
-        default=None, foreign_key="cycles.id", nullable=True, index=True
-    )
+    cycle_id: int | None = Field(default=None, foreign_key="cycles.id", nullable=True, index=True)
     cycle: "Cycles" = Relationship(back_populates="trades")
 
 
 class Cycles(SQLModel, table=True):
     __tablename__ = "cycles"
-    __table_args__ = (
-        UniqueConstraint(
-            "user_id", "friendly_name", name="uq_cycles_user_friendly_name"
-        ),
-    )
+    __table_args__ = (UniqueConstraint("user_id", "friendly_name", name="uq_cycles_user_friendly_name"),)
 
     id: int | None = Field(default=None, primary_key=True)
     user_id: int = Field(foreign_key="users.id", nullable=False, index=True)
-    friendly_name: str | None = Field(
-        default=None, sa_column=Column(Text, nullable=True)
-    )
+    friendly_name: str | None = Field(default=None, sa_column=Column(Text, nullable=True))
     symbol: str = Field(sa_column=Column(Text, nullable=False))
-    underlying_currency: UnderlyingCurrency = Field(
-        sa_column=Column(Text, nullable=False)
-    )
+    underlying_currency: UnderlyingCurrency = Field(sa_column=Column(Text, nullable=False))
     status: CycleStatus = Field(sa_column=Column(Text, nullable=False))
     funding_source: FundingSource = Field(sa_column=Column(Text, nullable=True))
     capital_exposure_cents: int | None = Field(default=None, nullable=True)
@@ -149,17 +125,9 @@ class Sessions(SQLModel, table=True):
     id: int | None = Field(default=None, primary_key=True)
     user_id: int = Field(foreign_key="users.id", nullable=False, index=True)
     session_token_hash: str = Field(sa_column=Column(Text, nullable=False, unique=True))
-    created_at: datetime = Field(
-        sa_column=Column(DateTime(timezone=True), nullable=False)
-    )
-    expires_at: datetime = Field(
-        sa_column=Column(DateTime(timezone=True), nullable=False, index=True)
-    )
-    last_seen_at: datetime | None = Field(
-        sa_column=Column(DateTime(timezone=True), nullable=True)
-    )
-    last_used_ip: str | None = Field(
-        default=None, sa_column=Column(Text, nullable=True)
-    )
+    created_at: datetime = Field(sa_column=Column(DateTime(timezone=True), nullable=False))
+    expires_at: datetime = Field(sa_column=Column(DateTime(timezone=True), nullable=False, index=True))
+    last_seen_at: datetime | None = Field(sa_column=Column(DateTime(timezone=True), nullable=True))
+    last_used_ip: str | None = Field(default=None, sa_column=Column(Text, nullable=True))
     user_agent: str | None = Field(default=None, sa_column=Column(Text, nullable=True))
     device_name: str | None = Field(default=None, sa_column=Column(Text, nullable=True))