import json
import tempfile
import unittest
from pathlib import Path
from unittest.mock import patch

from fastapi.testclient import TestClient

from music_server.app import create_app


class AppUpdateRouteTests(unittest.TestCase):
    def test_app_version_json_returns_server_apk_download_url(self):
        with tempfile.TemporaryDirectory() as tmp:
            release_dir = Path(tmp)
            version_json = release_dir / "version.json"
            apk_path = release_dir / "MusicFree_latest_release_universal.apk"
            version_json.write_text(
                json.dumps(
                    {
                        "version": "9.9.9",
                        "changeLog": ["server app update"],
                        "download": ["https://official.example/download"],
                    }
                ),
                encoding="utf-8",
            )
            apk_path.write_bytes(b"fake-apk")

            with patch.dict(
                "os.environ",
                {
                    "MUSICFREE_VERSION_JSON": str(version_json),
                    "MUSICFREE_APK_PATH": str(apk_path),
                    "MUSIC_SERVER_CACHE_RECONCILE_INTERVAL_SECONDS": "0",
                },
                clear=False,
            ):
                client = TestClient(create_app())

                response = client.get("/app/version.json")

        self.assertEqual(200, response.status_code)
        self.assertIn("application/json", response.headers.get("content-type", ""))
        payload = response.json()
        self.assertEqual("9.9.9", payload["version"])
        self.assertEqual(["server app update"], payload["changeLog"])
        self.assertEqual(
            ["http://testserver/app/MusicFree_latest_release_universal.apk"],
            payload["download"],
        )

    def test_app_apk_route_serves_configured_apk_file(self):
        with tempfile.TemporaryDirectory() as tmp:
            release_dir = Path(tmp)
            version_json = release_dir / "version.json"
            apk_path = release_dir / "MusicFree_latest_release_universal.apk"
            version_json.write_text(
                json.dumps({"version": "9.9.9", "changeLog": [], "download": []}),
                encoding="utf-8",
            )
            apk_path.write_bytes(b"fake-apk")

            with patch.dict(
                "os.environ",
                {
                    "MUSICFREE_VERSION_JSON": str(version_json),
                    "MUSICFREE_APK_PATH": str(apk_path),
                    "MUSIC_SERVER_CACHE_RECONCILE_INTERVAL_SECONDS": "0",
                },
                clear=False,
            ):
                client = TestClient(create_app())

                response = client.get("/app/MusicFree_latest_release_universal.apk")

        self.assertEqual(200, response.status_code)
        self.assertEqual(b"fake-apk", response.content)
        self.assertIn(
            "application/vnd.android.package-archive",
            response.headers.get("content-type", ""),
        )


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