Migrate Hailo detector key and support hailo device (#24327)

* Migrate Hailo detector key and support hailo device

* Fix missing check

frigate/test/test_plus.py

@@ -0,0 +1,79 @@
+"""Tests for Frigate+ model metadata."""
+
+import json
+import os
+import tempfile
+import unittest
+from unittest.mock import MagicMock, patch
+
+from frigate.plus import PlusApi, load_plus_model_info
+
+
+class TestHailoAlias(unittest.TestCase):
+    """Frigate+ reports Hailo models by the detector's pre-rename key.
+
+    Both the model list and a cached info file have to carry the current key,
+    or every Hailo model reads as unsupported.
+    """
+
+    def _get_models(self, models: list[dict]) -> list[dict]:
+        api = PlusApi.__new__(PlusApi)
+        response = MagicMock(ok=True, json=lambda: {"list": models})
+
+        with patch.object(PlusApi, "_get", return_value=response):
+            return api.get_models()["list"]
+
+    def test_the_model_list_gains_the_current_key(self):
+        models = self._get_models([{"supportedDetectors": ["hailo8l"]}])
+
+        self.assertEqual(models[0]["supportedDetectors"], ["hailo8l", "hailo"])
+
+    def test_the_old_key_is_kept_for_older_versions(self):
+        models = self._get_models([{"supportedDetectors": ["hailo8l"]}])
+
+        self.assertIn("hailo8l", models[0]["supportedDetectors"])
+
+    def test_other_detectors_are_untouched(self):
+        models = self._get_models([{"supportedDetectors": ["openvino", "onnx"]}])
+
+        self.assertEqual(models[0]["supportedDetectors"], ["openvino", "onnx"])
+
+    def test_a_model_already_naming_both_is_unchanged(self):
+        models = self._get_models([{"supportedDetectors": ["hailo8l", "hailo"]}])
+
+        self.assertEqual(models[0]["supportedDetectors"], ["hailo8l", "hailo"])
+
+    def test_an_empty_list(self):
+        self.assertEqual(self._get_models([]), [])
+
+
+class TestLoadPlusModelInfo(unittest.TestCase):
+    def setUp(self):
+        self.cache = tempfile.TemporaryDirectory()
+        self.addCleanup(self.cache.cleanup)
+        patcher = patch("frigate.plus.MODEL_CACHE_DIR", self.cache.name)
+        patcher.start()
+        self.addCleanup(patcher.stop)
+
+    def _write(self, model_id: str, content: str) -> None:
+        with open(os.path.join(self.cache.name, f"{model_id}.json"), "w") as f:
+            f.write(content)
+
+    def test_a_cached_hailo_model_gains_the_current_key(self):
+        self._write("abc", json.dumps({"supportedDetectors": ["hailo8l"]}))
+
+        self.assertEqual(
+            load_plus_model_info("abc")["supportedDetectors"], ["hailo8l", "hailo"]
+        )
+
+    def test_a_missing_file(self):
+        self.assertIsNone(load_plus_model_info("nope"))
+
+    def test_an_unreadable_file(self):
+        self._write("bad", "{not json")
+
+        self.assertIsNone(load_plus_model_info("bad"))
+
+
+if __name__ == "__main__":
+    unittest.main(verbosity=2)