# app/api/user.py

from fastapi import APIRouter, Depends, HTTPException, status
from fastapi.logger import logger
import traceback
import sys
from sqlalchemy.orm import Session
from app.schemas.user import UserCreate, UserResponse, PasswordUpdateRequest
from app.crud.user import create_user
from app.models.user import User
from app.core.database import SessionLocal
from app.core.deps import get_current_user
from app.core.security import verify_password, get_password_hash

router = APIRouter()

# DB 세션 주입 함수
def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()

@router.post("/", response_model=UserResponse)
def register_user(user_create: UserCreate, db: Session = Depends(get_db)):
    return create_user(db, user_create)

@router.get("/me", response_model=UserResponse)
def get_my_profile(current_user: User = Depends(get_current_user)):
    return current_user

@router.put("/me/password", status_code=204)
def update_password(
    pw_req: PasswordUpdateRequest,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    try:
        if not verify_password(pw_req.current_password, current_user.password_hash):
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail="현재 비밀번호가 일치하지 않습니다."
            )

        print("기존:", current_user.password_hash)
        print("신규:", get_password_hash(pw_req.new_password))

        current_user = db.merge(current_user)  # 세션에 붙임
        current_user.password_hash = get_password_hash(pw_req.new_password)
        db.flush()
        db.expunge(current_user)
        print("✅ flush 완료됨. 커밋 시도 중...")
        db.commit()
        print("✅ 커밋 완료됨.")
    except Exception as e:
        logger.error(f"❌ 비밀번호 변경 중 예외 발생: {e}")
        traceback.print_exc(file=sys.stdout)  # ← 여기가 핵심
        raise