"""银行账户前端查询接口。"""

from fastapi import APIRouter, Depends
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession

from app.dependencies import get_current_user, get_db
from app.models.bank_account import BankAccount
from app.models.user import User

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


@router.get("/default-account")
async def get_default_account(
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
):
    """获取默认银行账户信息（前端展示用）。

    优先返回标记为默认的启用账户；如果没有默认账户，返回第一个启用账户。
    """
    # 先查默认账户
    result = await db.execute(
        select(BankAccount).where(
            BankAccount.is_active.is_(True),
            BankAccount.is_default.is_(True),
        )
    )
    account = result.scalar_one_or_none()

    # 没有默认账户则取第一个启用账户
    if account is None:
        result = await db.execute(
            select(BankAccount).where(
                BankAccount.is_active.is_(True),
            ).order_by(BankAccount.created_at.asc())
        )
        account = result.scalar_one_or_none()

    if account is None:
        return {
            "has_account": False,
            "account": None,
        }

    return {
        "has_account": True,
        "account": {
            "id": account.id,
            "accountName": account.account_name,
            "bankName": account.bank_name,
            "accountNo": account.account_no,
            "description": account.description,
        },
    }


@router.get("/accounts")
async def list_active_accounts(
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
):
    """获取所有启用的银行账户列表（前端展示用）。"""
    result = await db.execute(
        select(BankAccount).where(
            BankAccount.is_active.is_(True),
        ).order_by(BankAccount.is_default.desc(), BankAccount.created_at.asc())
    )
    accounts = result.scalars().all()
    return {
        "items": [
            {
                "id": a.id,
                "accountName": a.account_name,
                "bankName": a.bank_name,
                "accountNo": a.account_no,
                "isDefault": a.is_default,
                "description": a.description,
            }
            for a in accounts
        ]
    }