from __future__ import annotations

from types import SimpleNamespace
from unittest.mock import patch

from django.test import TestCase, override_settings
from rest_framework.test import APIClient


@override_settings(ROOT_URLCONF="location_data.urls")
class NdviHealthApiTests(TestCase):
    def setUp(self):
        self.client = APIClient()

    @patch("location_data.views.apps.get_app_config")
    def test_ndvi_health_api_returns_payload(self, mock_get_app_config):
        mock_service = SimpleNamespace(
            get_ndvi_health=lambda **_kwargs: {
                "ndviIndex": 0.68,
                "mean_ndvi": 0.68,
                "ndvi_map": {"grid": [[0.61, 0.7]]},
                "vegetation_health_class": "Healthy vegetation",
                "observation_date": "2026-04-02",
                "satellite_source": "sentinel-2",
                "healthData": [
                    {
                        "title": "سلامت پوشش گیاهی",
                        "value": "Healthy vegetation",
                        "color": "success",
                        "icon": "tabler-plant",
                    }
                ],
            }
        )
        mock_get_app_config.return_value = SimpleNamespace(
            get_ndvi_health_service=lambda: mock_service
        )

        response = self.client.post(
            "/ndvi-health/",
            data={"farm_uuid": "550e8400-e29b-41d4-a716-446655440000"},
            format="json",
        )

        self.assertEqual(response.status_code, 200)
        payload = response.json()["data"]
        self.assertEqual(payload["mean_ndvi"], 0.68)
        self.assertEqual(payload["vegetation_health_class"], "Healthy vegetation")

    @patch("location_data.views.apps.get_app_config")
    def test_ndvi_health_api_returns_404_for_missing_farm(self, mock_get_app_config):
        mock_service = SimpleNamespace(
            get_ndvi_health=lambda **_kwargs: (_ for _ in ()).throw(ValueError("Farm not found."))
        )
        mock_get_app_config.return_value = SimpleNamespace(
            get_ndvi_health_service=lambda: mock_service
        )

        response = self.client.post(
            "/ndvi-health/",
            data={"farm_uuid": "550e8400-e29b-41d4-a716-446655440000"},
            format="json",
        )

        self.assertEqual(response.status_code, 404)
        self.assertEqual(response.json()["msg"], "Farm not found.")