86 lines
3.1 KiB
Python
86 lines
3.1 KiB
Python
"""认证服务：注册、登录、登出、Session 校验。"""
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from app.core.errors import (
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AuthRequiredError,
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ConflictError,
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InvalidCredentialsError,
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)
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from app.core.security import hash_password, verify_password
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from app.core.session import create_session, delete_session, get_session_user
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from app.models.user import User
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from app.repositories.plan_repo import PlanRepository
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from app.repositories.user_repo import UserRepository
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from sqlalchemy.orm import Session
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class AuthService:
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def __init__(self, session: Session) -> None:
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self._session = session
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self._user_repo = UserRepository(session)
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self._plan_repo = PlanRepository(session)
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def register(self, username: str, email: str, password: str) -> tuple[User, str]:
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"""注册新用户。返回 (user, session_token)。
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Raises:
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ConflictError: 用户名或邮箱已存在
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"""
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username_taken, email_taken = self._user_repo.exists_username_or_email(username, email)
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if username_taken:
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raise ConflictError("用户名已被占用。", code="USERNAME_TAKEN")
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if email_taken:
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raise ConflictError("邮箱已被注册。", code="EMAIL_TAKEN")
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plan = self._plan_repo.get_or_create_free()
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user = self._user_repo.create(
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username=username,
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email=email,
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password_hash=hash_password(password),
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plan_id=plan.id,
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)
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self._session.commit()
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token = create_session(user.id)
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return user, token
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def login(self, username_or_email: str, password: str) -> tuple[User, str]:
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"""登录。返回 (user, session_token)。
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Raises:
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InvalidCredentialsError: 用户名/邮箱或密码错误
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"""
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user = self._user_repo.get_by_username_or_email(username_or_email)
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if user is None:
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raise InvalidCredentialsError()
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if not verify_password(password, user.password_hash):
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raise InvalidCredentialsError()
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if user.status != "active":
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raise InvalidCredentialsError("账户已被禁用。")
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token = create_session(user.id)
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return user, token
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def logout(self, session_token: str) -> None:
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"""登出：删除 session。"""
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delete_session(session_token)
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def get_current_user(self, session_token: str | None) -> User:
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"""根据 session token 获取当前用户。
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Raises:
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AuthRequiredError: 未登录或 session 已过期
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"""
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if not session_token:
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raise AuthRequiredError()
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user_id = get_session_user(session_token)
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if user_id is None:
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raise AuthRequiredError("登录已过期，请重新登录。")
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user = self._user_repo.get_by_id(user_id)
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if user is None or user.status != "active":
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raise AuthRequiredError()
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return user
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def change_password(self, user: User, new_password: str) -> None:
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"""修改密码。"""
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self._user_repo.update_password(user, hash_password(new_password))
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self._session.commit() |