"""
认证 API 集成测试

测试注册、登录、获取当前用户、刷新 Token 等端点
使用同步 TestClient + Mock 数据库会话
"""

from datetime import datetime
from unittest.mock import AsyncMock, MagicMock, patch

from fastapi.testclient import TestClient

from app.core.security import hash_password
from app.models.user import User, UserStatus
from tests.conftest import make_db_result


class TestAuthAPI:
    """认证 API 集成测试"""

    def test_register_user_success(self, client: TestClient, mock_db: AsyncMock):
        """测试用户注册成功"""
        # mock: 邮箱不存在
        mock_db.execute = AsyncMock(
            return_value=make_db_result(scalar=None)
        )
        # mock: commit + refresh 后返回带 id 的 user
        def refresh_side_effect(obj, *args, **kwargs):
            obj.id = 1
            obj.created_at = datetime.utcnow()
            obj.updated_at = datetime.utcnow()
            obj.last_login_at = None
            obj.permissions = None
            obj.status = UserStatus.ACTIVE.value
        mock_db.refresh.side_effect = refresh_side_effect

        response = client.post(
            "/api/auth/register",
            json={
                "email": "newuser@example.com",
                "password": "password123",
                "full_name": "新用户",
                "company_id": 1,
            },
        )
        assert response.status_code == 201
        data = response.json()
        assert data["email"] == "newuser@example.com"
        assert data["full_name"] == "新用户"

    def test_register_duplicate_email(self, client: TestClient, mock_db: AsyncMock):
        """测试重复邮箱注册失败"""
        existing_user = MagicMock()
        mock_db.execute = AsyncMock(
            return_value=make_db_result(scalar=existing_user)
        )

        response = client.post(
            "/api/auth/register",
            json={
                "email": "dup@example.com",
                "password": "password123",
                "full_name": "用户1",
                "company_id": 1,
            },
        )
        assert response.status_code == 400

    def test_login_success(self, client: TestClient, mock_db: AsyncMock):
        """测试登录成功"""
        password = "pass123456"
        user = User(
            id=1,
            company_id=1,
            email="login@example.com",
            hashed_password=hash_password(password),
            full_name="登录用户",
            role="会计",
            status=UserStatus.ACTIVE.value,
            created_at=datetime.utcnow(),
            updated_at=datetime.utcnow(),
        )
        mock_db.execute = AsyncMock(
            return_value=make_db_result(scalar=user)
        )

        response = client.post(
            "/api/auth/login",
            json={"email": "login@example.com", "password": password},
        )
        assert response.status_code == 200
        data = response.json()
        assert "access_token" in data
        assert data["token_type"] == "bearer"
        assert data["user"]["email"] == "login@example.com"

    def test_login_wrong_password(self, client: TestClient, mock_db: AsyncMock):
        """测试密码错误登录失败"""
        user = User(
            id=1,
            company_id=1,
            email="wrong@example.com",
            hashed_password=hash_password("correctpass"),
            full_name="用户",
            status=UserStatus.ACTIVE.value,
            created_at=datetime.utcnow(),
            updated_at=datetime.utcnow(),
        )
        mock_db.execute = AsyncMock(
            return_value=make_db_result(scalar=user)
        )

        response = client.post(
            "/api/auth/login",
            json={"email": "wrong@example.com", "password": "wrongpass"},
        )
        assert response.status_code == 401

    def test_login_nonexistent_user(self, client: TestClient, mock_db: AsyncMock):
        """测试不存在的用户登录失败"""
        mock_db.execute = AsyncMock(
            return_value=make_db_result(scalar=None)
        )

        response = client.post(
            "/api/auth/login",
            json={"email": "nobody@example.com", "password": "anypass"},
        )
        assert response.status_code == 401

    def test_get_current_user_no_token(self, client: TestClient):
        """测试无 Token 访问被拒"""
        response = client.get("/api/auth/me")
        assert response.status_code == 401

    def test_refresh_token(self, client: TestClient, auth_headers: dict, mock_db: AsyncMock):
        """测试刷新 Token"""
        user = User(
            id=1,
            company_id=1,
            email="test@example.com",
            hashed_password="x",
            full_name="测试用户",
            status=UserStatus.ACTIVE.value,
            created_at=datetime.utcnow(),
            updated_at=datetime.utcnow(),
        )
        mock_db.execute = AsyncMock(
            return_value=make_db_result(scalar=user)
        )

        response = client.post("/api/auth/refresh", headers=auth_headers)
        assert response.status_code == 200
        data = response.json()
        assert "access_token" in data

    def test_logout(self, client: TestClient, auth_headers: dict, mock_db: AsyncMock):
        """测试登出"""
        user = User(
            id=1,
            company_id=1,
            email="test@example.com",
            hashed_password="x",
            full_name="测试用户",
            status=UserStatus.ACTIVE.value,
            created_at=datetime.utcnow(),
            updated_at=datetime.utcnow(),
        )
        mock_db.execute = AsyncMock(
            return_value=make_db_result(scalar=user)
        )

        response = client.post("/api/auth/logout", headers=auth_headers)
        assert response.status_code == 200