feat: CRUD-API Konten/Buchungen/Kategorien/Regeln

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

finance/app/routers/accounts.py

@@ -0,0 +1,58 @@
+from decimal import Decimal
+
+from fastapi import APIRouter, Depends, HTTPException
+from pydantic import BaseModel, ConfigDict
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from app.auth import require_auth
+from app.db import get_session
+from app.models.tables import Account
+from app.services.balances import account_balance
+
+router = APIRouter(prefix="/api/accounts", tags=["accounts"],
+                   dependencies=[Depends(require_auth)])
+
+
+class AccountIn(BaseModel):
+    bank: str
+    iban: str
+    name: str
+    type: str = "giro"
+
+
+class AccountOut(AccountIn):
+    model_config = ConfigDict(from_attributes=True)
+    id: int
+    balance: Decimal = Decimal("0")
+
+
+@router.get("", response_model=list[AccountOut])
+def list_accounts(session: Session = Depends(get_session)):
+    out = []
+    for acc in session.execute(select(Account)).scalars():
+        item = AccountOut.model_validate(acc)
+        item.balance = account_balance(session, acc)
+        out.append(item)
+    return out
+
+
+@router.get("/{account_id}", response_model=AccountOut)
+def get_account(account_id: int, session: Session = Depends(get_session)):
+    acc = session.get(Account, account_id)
+    if acc is None:
+        raise HTTPException(404, "Konto nicht gefunden")
+    item = AccountOut.model_validate(acc)
+    item.balance = account_balance(session, acc)
+    return item
+
+
+@router.post("", response_model=AccountOut, status_code=201)
+def create_account(data: AccountIn, session: Session = Depends(get_session)):
+    if session.execute(select(Account).where(Account.iban == data.iban)).scalar():
+        raise HTTPException(409, "IBAN existiert bereits")
+    acc = Account(**data.model_dump())
+    session.add(acc)
+    session.commit()
+    session.refresh(acc)
+    return AccountOut.model_validate(acc)