from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session
from app.auth.dependencies import get_current_user
from app.database import get_db
from app.models.account import Account, AccountType
from app.models.user import User
from app.schemas.account import AccountCreate, AccountUpdate, AccountOut, AccountTypeOut

router = APIRouter(prefix="/accounts", tags=["accounts"])


@router.get("/types", response_model=list[AccountTypeOut])
def list_types(db: Session = Depends(get_db), _=Depends(get_current_user)):
    return db.query(AccountType).order_by(AccountType.name).all()


@router.get("", response_model=list[AccountOut])
def list_accounts(db: Session = Depends(get_db), current_user: User = Depends(get_current_user)):
    return db.query(Account).filter(Account.user_id == current_user.id).order_by(Account.name).all()


@router.get("/{account_id}", response_model=AccountOut)
def get_account(account_id: int, db: Session = Depends(get_db), current_user: User = Depends(get_current_user)):
    obj = db.get(Account, account_id)
    if not obj or obj.user_id != current_user.id:
        raise HTTPException(status_code=404, detail="Account not found")
    return obj


@router.post("", response_model=AccountOut, status_code=status.HTTP_201_CREATED)
def create_account(body: AccountCreate, db: Session = Depends(get_db), current_user: User = Depends(get_current_user)):
    obj = Account(
        **body.model_dump(),
        user_id=current_user.id,
        balance=body.initial_balance,
    )
    db.add(obj)
    db.commit()
    db.refresh(obj)
    return obj


@router.patch("/{account_id}", response_model=AccountOut)
def update_account(
    account_id: int, body: AccountUpdate,
    db: Session = Depends(get_db), current_user: User = Depends(get_current_user)
):
    obj = db.get(Account, account_id)
    if not obj or obj.user_id != current_user.id:
        raise HTTPException(status_code=404, detail="Account not found")
    for field, value in body.model_dump(exclude_none=True).items():
        setattr(obj, field, value)
    db.commit()
    db.refresh(obj)
    return obj


@router.delete("/{account_id}", status_code=status.HTTP_204_NO_CONTENT)
def delete_account(account_id: int, db: Session = Depends(get_db), current_user: User = Depends(get_current_user)):
    obj = db.get(Account, account_id)
    if not obj or obj.user_id != current_user.id:
        raise HTTPException(status_code=404, detail="Account not found")
    db.delete(obj)
    db.commit()