from sqlalchemy.orm import Session

from app.common.errors.app_error import ConflictAppError
from app.models.entities import User
from app.modules.users.repository import UsersRepository


class UsersService:
    def __init__(self, db: Session) -> None:
        self.db = db
        self.repository = UsersRepository(db)

    def update_profile(self, user: User, payload) -> dict:
        if payload.username and payload.username != user.username:
            existing = self.repository.get_by_username(payload.username)
            if existing and existing.id != user.id:
                raise ConflictAppError("username already exists", code=10011)
            user.username = payload.username
        if payload.nickname is not None:
            user.nickname = payload.nickname
        if payload.avatar_url is not None:
            user.avatar_url = payload.avatar_url
        self.db.commit()
        return {
            "publicId": user.public_id,
            "username": user.username or "",
            "nickname": user.nickname,
            "avatarUrl": user.avatar_url,
            "email": user.email or "",
        }