"""
Contract tests for camera API endpoints
These tests define the expected behavior - they will FAIL until implementation is complete
"""
import pytest
from httpx import AsyncClient
from fastapi import status


@pytest.mark.asyncio
class TestCamerasList:
    """Contract tests for GET /api/v1/cameras"""

    async def test_list_cameras_success_admin(self, async_client: AsyncClient, auth_token: str):
        """Test listing cameras with admin authentication"""
        response = await async_client.get(
            "/api/v1/cameras",
            headers={"Authorization": f"Bearer {auth_token}"}
        )

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

        # Verify response structure
        assert "cameras" in data
        assert "total" in data
        assert isinstance(data["cameras"], list)
        assert isinstance(data["total"], int)

        # If cameras exist, verify camera structure
        if data["cameras"]:
            camera = data["cameras"][0]
            assert "id" in camera
            assert "name" in camera
            assert "description" in camera
            assert "has_ptz" in camera
            assert "has_video_sensor" in camera
            assert "status" in camera

    async def test_list_cameras_success_operator(self, async_client: AsyncClient, operator_token: str):
        """Test listing cameras with operator role"""
        response = await async_client.get(
            "/api/v1/cameras",
            headers={"Authorization": f"Bearer {operator_token}"}
        )

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

    async def test_list_cameras_success_viewer(self, async_client: AsyncClient, viewer_token: str):
        """Test listing cameras with viewer role (read-only)"""
        response = await async_client.get(
            "/api/v1/cameras",
            headers={"Authorization": f"Bearer {viewer_token}"}
        )

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

    async def test_list_cameras_no_auth(self, async_client: AsyncClient):
        """Test listing cameras without authentication"""
        response = await async_client.get("/api/v1/cameras")

        assert response.status_code == status.HTTP_401_UNAUTHORIZED
        data = response.json()
        assert "error" in data or "detail" in data

    async def test_list_cameras_invalid_token(self, async_client: AsyncClient):
        """Test listing cameras with invalid token"""
        response = await async_client.get(
            "/api/v1/cameras",
            headers={"Authorization": "Bearer invalid_token_here"}
        )

        assert response.status_code == status.HTTP_401_UNAUTHORIZED

    async def test_list_cameras_expired_token(self, async_client: AsyncClient, expired_token: str):
        """Test listing cameras with expired token"""
        response = await async_client.get(
            "/api/v1/cameras",
            headers={"Authorization": f"Bearer {expired_token}"}
        )

        assert response.status_code == status.HTTP_401_UNAUTHORIZED

    async def test_list_cameras_caching(self, async_client: AsyncClient, auth_token: str):
        """Test that camera list is cached (second request should be faster)"""
        # First request - cache miss
        response1 = await async_client.get(
            "/api/v1/cameras",
            headers={"Authorization": f"Bearer {auth_token}"}
        )
        assert response1.status_code == status.HTTP_200_OK

        # Second request - cache hit
        response2 = await async_client.get(
            "/api/v1/cameras",
            headers={"Authorization": f"Bearer {auth_token}"}
        )
        assert response2.status_code == status.HTTP_200_OK

        # Results should be identical
        assert response1.json() == response2.json()

    async def test_list_cameras_empty_result(self, async_client: AsyncClient, auth_token: str):
        """Test listing cameras when none are available"""
        # This test assumes SDK Bridge might return empty list
        response = await async_client.get(
            "/api/v1/cameras",
            headers={"Authorization": f"Bearer {auth_token}"}
        )

        assert response.status_code == status.HTTP_200_OK
        data = response.json()
        assert "cameras" in data
        assert data["total"] >= 0  # Can be 0 if no cameras


@pytest.mark.asyncio
class TestCameraDetail:
    """Contract tests for GET /api/v1/cameras/{camera_id}"""

    async def test_get_camera_success(self, async_client: AsyncClient, auth_token: str):
        """Test getting single camera details"""
        # First get list to find a valid camera ID
        list_response = await async_client.get(
            "/api/v1/cameras",
            headers={"Authorization": f"Bearer {auth_token}"}
        )

        cameras = list_response.json()["cameras"]
        if not cameras:
            pytest.skip("No cameras available for testing")

        camera_id = cameras[0]["id"]

        # Now get camera detail
        response = await async_client.get(
            f"/api/v1/cameras/{camera_id}",
            headers={"Authorization": f"Bearer {auth_token}"}
        )

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

        # Verify camera structure
        assert data["id"] == camera_id
        assert "name" in data
        assert "description" in data
        assert "has_ptz" in data
        assert "has_video_sensor" in data
        assert "status" in data

    async def test_get_camera_not_found(self, async_client: AsyncClient, auth_token: str):
        """Test getting non-existent camera"""
        response = await async_client.get(
            "/api/v1/cameras/99999",  # Non-existent ID
            headers={"Authorization": f"Bearer {auth_token}"}
        )

        assert response.status_code == status.HTTP_404_NOT_FOUND
        data = response.json()
        assert "error" in data or "detail" in data

    async def test_get_camera_invalid_id(self, async_client: AsyncClient, auth_token: str):
        """Test getting camera with invalid ID format"""
        response = await async_client.get(
            "/api/v1/cameras/invalid",
            headers={"Authorization": f"Bearer {auth_token}"}
        )

        # Should return 422 (validation error) or 404 (not found)
        assert response.status_code in [status.HTTP_422_UNPROCESSABLE_ENTITY, status.HTTP_404_NOT_FOUND]

    async def test_get_camera_no_auth(self, async_client: AsyncClient):
        """Test getting camera without authentication"""
        response = await async_client.get("/api/v1/cameras/1")

        assert response.status_code == status.HTTP_401_UNAUTHORIZED

    async def test_get_camera_all_roles(self, async_client: AsyncClient, auth_token: str,
                                       operator_token: str, viewer_token: str):
        """Test that all roles can read camera details"""
        # All roles (viewer, operator, administrator) should be able to read cameras
        for token in [viewer_token, operator_token, auth_token]:
            response = await async_client.get(
                "/api/v1/cameras/1",
                headers={"Authorization": f"Bearer {token}"}
            )
            # Should succeed or return 404 (if camera doesn't exist), but not 403
            assert response.status_code in [status.HTTP_200_OK, status.HTTP_404_NOT_FOUND]

    async def test_get_camera_caching(self, async_client: AsyncClient, auth_token: str):
        """Test that camera details are cached"""
        camera_id = 1

        # First request - cache miss
        response1 = await async_client.get(
            f"/api/v1/cameras/{camera_id}",
            headers={"Authorization": f"Bearer {auth_token}"}
        )

        # Second request - cache hit (if camera exists)
        response2 = await async_client.get(
            f"/api/v1/cameras/{camera_id}",
            headers={"Authorization": f"Bearer {auth_token}"}
        )

        # Both should have same status code
        assert response1.status_code == response2.status_code

        # If successful, results should be identical
        if response1.status_code == status.HTTP_200_OK:
            assert response1.json() == response2.json()


@pytest.mark.asyncio
class TestCameraIntegration:
    """Integration tests for camera endpoints with SDK Bridge"""

    async def test_camera_data_consistency(self, async_client: AsyncClient, auth_token: str):
        """Test that camera data is consistent between list and detail endpoints"""
        # Get camera list
        list_response = await async_client.get(
            "/api/v1/cameras",
            headers={"Authorization": f"Bearer {auth_token}"}
        )

        if list_response.status_code != status.HTTP_200_OK:
            pytest.skip("Camera list not available")

        cameras = list_response.json()["cameras"]
        if not cameras:
            pytest.skip("No cameras available")

        # Get first camera detail
        camera_id = cameras[0]["id"]
        detail_response = await async_client.get(
            f"/api/v1/cameras/{camera_id}",
            headers={"Authorization": f"Bearer {auth_token}"}
        )

        assert detail_response.status_code == status.HTTP_200_OK

        # Verify consistency
        list_camera = cameras[0]
        detail_camera = detail_response.json()

        assert list_camera["id"] == detail_camera["id"]
        assert list_camera["name"] == detail_camera["name"]
        assert list_camera["status"] == detail_camera["status"]
