"""数据库 CRUD 操作"""

from typing import List, Optional
from sqlalchemy.orm import Session, joinedload

from app.models import MarketRegime, Account, Strategy, RegimeMatch
from app.schemas import (
    MarketRegimeCreate, MarketRegimeUpdate,
    AccountCreate, AccountUpdate,
    StrategyCreate, StrategyUpdate,
    RegimeMatchCreate, RegimeMatchUpdate,
)


# ── 大盘阶段 ──

def get_regimes(db: Session) -> List[MarketRegime]:
    return db.query(MarketRegime).order_by(MarketRegime.id).all()


def get_regime(db: Session, regime_id: int) -> Optional[MarketRegime]:
    return db.query(MarketRegime).filter(MarketRegime.id == regime_id).first()


def create_regime(db: Session, data: MarketRegimeCreate) -> MarketRegime:
    obj = MarketRegime(**data.model_dump())
    db.add(obj)
    db.commit()
    db.refresh(obj)
    return obj


def update_regime(db: Session, regime_id: int, data: MarketRegimeUpdate) -> Optional[MarketRegime]:
    obj = get_regime(db, regime_id)
    if not obj:
        return None
    for k, v in data.model_dump(exclude_unset=True).items():
        setattr(obj, k, v)
    db.commit()
    db.refresh(obj)
    return obj


def delete_regime(db: Session, regime_id: int) -> bool:
    obj = get_regime(db, regime_id)
    if not obj:
        return False
    db.delete(obj)
    db.commit()
    return True


# ── 账户 ──

def get_accounts(db: Session) -> List[Account]:
    return db.query(Account).order_by(Account.id).all()


def get_account(db: Session, account_id: int) -> Optional[Account]:
    return db.query(Account).filter(Account.id == account_id).first()


def create_account(db: Session, data: AccountCreate) -> Account:
    obj = Account(**data.model_dump())
    db.add(obj)
    db.commit()
    db.refresh(obj)
    return obj


def update_account(db: Session, account_id: int, data: AccountUpdate) -> Optional[Account]:
    obj = get_account(db, account_id)
    if not obj:
        return None
    for k, v in data.model_dump(exclude_unset=True).items():
        setattr(obj, k, v)
    db.commit()
    db.refresh(obj)
    return obj


def delete_account(db: Session, account_id: int) -> bool:
    obj = get_account(db, account_id)
    if not obj:
        return False
    db.delete(obj)
    db.commit()
    return True


# ── 策略 ──

def get_strategies(db: Session) -> List[Strategy]:
    return db.query(Strategy).order_by(Strategy.id).all()


def get_strategy(db: Session, strategy_id: int) -> Optional[Strategy]:
    return db.query(Strategy).filter(Strategy.id == strategy_id).first()


def create_strategy(db: Session, data: StrategyCreate) -> Strategy:
    obj = Strategy(**data.model_dump())
    db.add(obj)
    db.commit()
    db.refresh(obj)
    return obj


def update_strategy(db: Session, strategy_id: int, data: StrategyUpdate) -> Optional[Strategy]:
    obj = get_strategy(db, strategy_id)
    if not obj:
        return None
    for k, v in data.model_dump(exclude_unset=True).items():
        setattr(obj, k, v)
    db.commit()
    db.refresh(obj)
    return obj


def delete_strategy(db: Session, strategy_id: int) -> bool:
    obj = get_strategy(db, strategy_id)
    if not obj:
        return False
    db.delete(obj)
    db.commit()
    return True


# ── 匹配绑定 ──

def get_matches(db: Session) -> List[RegimeMatch]:
    return (
        db.query(RegimeMatch)
        .options(
            joinedload(RegimeMatch.regime),
            joinedload(RegimeMatch.account),
            joinedload(RegimeMatch.strategy),
        )
        .order_by(RegimeMatch.id)
        .all()
    )


def get_match(db: Session, match_id: int) -> Optional[RegimeMatch]:
    return db.query(RegimeMatch).filter(RegimeMatch.id == match_id).first()


def create_match(db: Session, data: RegimeMatchCreate) -> RegimeMatch:
    obj = RegimeMatch(**data.model_dump())
    db.add(obj)
    db.commit()
    db.refresh(obj)
    return obj


def update_match(db: Session, match_id: int, data: RegimeMatchUpdate) -> Optional[RegimeMatch]:
    obj = get_match(db, match_id)
    if not obj:
        return None
    for k, v in data.model_dump(exclude_unset=True).items():
        setattr(obj, k, v)
    db.commit()
    db.refresh(obj)
    return obj


def delete_match(db: Session, match_id: int) -> bool:
    obj = get_match(db, match_id)
    if not obj:
        return False
    db.delete(obj)
    db.commit()
    return True