# tests/api/test_users.py
"""
Tests for user routes.
"""
import pytest
import pytest_asyncio
from fastapi import status
from uuid import uuid4


@pytest_asyncio.fixture
async def superuser_token(client, async_test_superuser):
    """Get access token for superuser."""
    response = await client.post(
        "/api/v1/auth/login",
        json={
            "email": "superuser@example.com",
            "password": "SuperPassword123!"
        }
    )
    assert response.status_code == 200
    return response.json()["access_token"]


@pytest_asyncio.fixture
async def user_token(client, async_test_user):
    """Get access token for regular user."""
    response = await client.post(
        "/api/v1/auth/login",
        json={
            "email": "testuser@example.com",
            "password": "TestPassword123!"
        }
    )
    assert response.status_code == 200
    return response.json()["access_token"]


class TestListUsers:
    """Tests for GET /users endpoint (superuser only)."""

    @pytest.mark.asyncio
    async def test_list_users_success(self, client, superuser_token):
        """Test listing users successfully (covers lines 87-100)."""
        response = await client.get(
            "/api/v1/users",
            headers={"Authorization": f"Bearer {superuser_token}"}
        )

        assert response.status_code == status.HTTP_200_OK
        data = response.json()
        assert "data" in data
        assert "pagination" in data
        assert isinstance(data["data"], list)

    @pytest.mark.asyncio
    async def test_list_users_with_is_superuser_filter(self, client, superuser_token):
        """Test listing users with is_superuser filter (covers line 74)."""
        response = await client.get(
            "/api/v1/users?is_superuser=true",
            headers={"Authorization": f"Bearer {superuser_token}"}
        )

        assert response.status_code == status.HTTP_200_OK
        data = response.json()
        assert "data" in data


class TestGetCurrentUser:
    """Tests for GET /users/me endpoint."""

    @pytest.mark.asyncio
    async def test_get_current_user_success(self, client, async_test_user, user_token):
        """Test getting current user profile."""
        response = await client.get(
            "/api/v1/users/me",
            headers={"Authorization": f"Bearer {user_token}"}
        )

        assert response.status_code == status.HTTP_200_OK
        data = response.json()
        assert data["email"] == "testuser@example.com"
        assert data["id"] == str(async_test_user.id)


class TestUpdateCurrentUser:
    """Tests for PATCH /users/me endpoint."""

    @pytest.mark.asyncio
    async def test_update_current_user_success(self, client, user_token):
        """Test updating current user profile (covers lines 150-151)."""
        response = await client.patch(
            "/api/v1/users/me",
            headers={"Authorization": f"Bearer {user_token}"},
            json={"first_name": "UpdatedName"}
        )

        assert response.status_code == status.HTTP_200_OK
        data = response.json()
        assert data["first_name"] == "UpdatedName"

    @pytest.mark.asyncio
    async def test_update_current_user_database_error(self, client, user_token):
        """Test database error handling during update (covers lines 162-169)."""
        from unittest.mock import patch

        with patch('app.api.routes.users.user_crud.update', side_effect=Exception("DB error")):
            with pytest.raises(Exception):
                await client.patch(
                    "/api/v1/users/me",
                    headers={"Authorization": f"Bearer {user_token}"},
                    json={"first_name": "Updated"}
                )


class TestGetUser:
    """Tests for GET /users/{user_id} endpoint."""

    @pytest.mark.asyncio
    async def test_get_user_success(self, client, async_test_user, superuser_token):
        """Test getting user by ID."""
        response = await client.get(
            f"/api/v1/users/{async_test_user.id}",
            headers={"Authorization": f"Bearer {superuser_token}"}
        )

        assert response.status_code == status.HTTP_200_OK
        data = response.json()
        assert data["id"] == str(async_test_user.id)

    @pytest.mark.asyncio
    async def test_get_user_not_found(self, client, superuser_token):
        """Test getting non-existent user (covers lines 210-216)."""
        fake_id = uuid4()
        response = await client.get(
            f"/api/v1/users/{fake_id}",
            headers={"Authorization": f"Bearer {superuser_token}"}
        )

        assert response.status_code == status.HTTP_404_NOT_FOUND


class TestChangePassword:
    """Tests for PATCH /users/me/password endpoint."""

    @pytest.mark.asyncio
    async def test_change_password_success(self, client, async_test_db):
        """Test changing password successfully (covers lines 261-284)."""
        test_engine, AsyncTestingSessionLocal = async_test_db

        # Create a fresh user
        async with AsyncTestingSessionLocal() as session:
            from app.models.user import User
            from app.core.auth import get_password_hash

            new_user = User(
                email="changepass@example.com",
                password_hash=get_password_hash("OldPassword123!"),
                first_name="Change",
                last_name="Pass"
            )
            session.add(new_user)
            await session.commit()

        # Login
        login_response = await client.post(
            "/api/v1/auth/login",
            json={
                "email": "changepass@example.com",
                "password": "OldPassword123!"
            }
        )
        token = login_response.json()["access_token"]

        # Change password
        response = await client.patch(
            "/api/v1/users/me/password",
            headers={"Authorization": f"Bearer {token}"},
            json={
                "current_password": "OldPassword123!",
                "new_password": "NewPassword456!"
            }
        )

        assert response.status_code == status.HTTP_200_OK
        data = response.json()
        assert data["success"] is True

        # Verify new password works
        login_response = await client.post(
            "/api/v1/auth/login",
            json={
                "email": "changepass@example.com",
                "password": "NewPassword456!"
            }
        )
        assert login_response.status_code == status.HTTP_200_OK