import json
import tempfile
import unittest
from pathlib import Path

from approach.vlm.gpt4v.gpt4v import get_steam_app_data, load_app_metadata_cache


class AppMetadataCacheTests(unittest.TestCase):
    def test_json_cache_supplies_app_context(self):
        with tempfile.TemporaryDirectory() as tmpdir:
            cache_path = Path(tmpdir) / "app_metadata.json"
            cache_path.write_text(
                json.dumps(
                    {
                        "123": {
                            "app_name": "Pinned App",
                            "app_description": "Pinned description",
                        }
                    }
                ),
                encoding="utf-8",
            )

            cache = load_app_metadata_cache(cache_path)

        self.assertEqual(
            get_steam_app_data("123", "123_4.jpg", metadata_cache=cache),
            ("Pinned App", "Pinned description"),
        )

    def test_cache_missing_app_id_fails_closed(self):
        with self.assertRaises(KeyError):
            get_steam_app_data("999", "999_1.jpg", metadata_cache={})

    def test_jsonl_cache_is_keyed_by_app_id(self):
        with tempfile.TemporaryDirectory() as tmpdir:
            cache_path = Path(tmpdir) / "app_metadata.jsonl"
            cache_path.write_text(
                json.dumps(
                    {
                        "app_id": 456,
                        "name": "JSONL App",
                        "description": "JSONL description",
                    }
                )
                + "\n",
                encoding="utf-8",
            )

            cache = load_app_metadata_cache(cache_path)

        self.assertEqual(
            get_steam_app_data("456", "456_7.jpg", metadata_cache=cache),
            ("JSONL App", "JSONL description"),
        )

    def test_duplicate_jsonl_app_id_is_rejected(self):
        with tempfile.TemporaryDirectory() as tmpdir:
            cache_path = Path(tmpdir) / "app_metadata.jsonl"
            cache_path.write_text(
                "\n".join(
                    [
                        json.dumps(
                            {
                                "app_id": 123,
                                "app_name": "First",
                                "app_description": "Description",
                            }
                        ),
                        json.dumps(
                            {
                                "app_id": "123",
                                "app_name": "Second",
                                "app_description": "Description",
                            }
                        ),
                    ]
                )
                + "\n",
                encoding="utf-8",
            )

            with self.assertRaises(ValueError):
                load_app_metadata_cache(cache_path)

    def test_duplicate_json_object_key_is_rejected(self):
        with tempfile.TemporaryDirectory() as tmpdir:
            cache_path = Path(tmpdir) / "app_metadata.json"
            cache_path.write_text(
                '{"123":{"app_name":"First","app_description":"One"},'
                '"123":{"app_name":"Second","app_description":"Two"}}',
                encoding="utf-8",
            )

            with self.assertRaises(ValueError):
                load_app_metadata_cache(cache_path)

    def test_mapping_key_and_record_app_id_must_match(self):
        with tempfile.TemporaryDirectory() as tmpdir:
            cache_path = Path(tmpdir) / "app_metadata.json"
            cache_path.write_text(
                json.dumps(
                    {
                        "123": {
                            "app_id": "456",
                            "app_name": "Mismatch",
                            "app_description": "Description",
                        }
                    }
                ),
                encoding="utf-8",
            )

            with self.assertRaises(ValueError):
                load_app_metadata_cache(cache_path)

    def test_missing_cache_fields_fail_closed(self):
        with self.assertRaises(ValueError):
            get_steam_app_data("123", "123_4.jpg", metadata_cache={"123": {"app_name": "App"}})


if __name__ == "__main__":
    unittest.main()