from pathlib import Path
import subprocess
import sys
import tempfile
import unittest


ROOT = Path(__file__).parents[2]
CHECKER = ROOT / "scripts" / "verify_observability_manifests.py"


class ObservabilityManifestTest(unittest.TestCase):
    def run_checker(self, directory=None):
        command = [sys.executable, str(CHECKER)]
        if directory is not None:
            command += ["--directory", str(directory)]
        return subprocess.run(command, cwd=ROOT, text=True, capture_output=True)

    def test_checked_in_resources_match_service_and_metric_contract(self):
        result = self.run_checker()
        self.assertEqual(result.returncode, 0, result.stderr)

    def test_checker_rejects_wrong_namespace_and_broad_scrape(self):
        with tempfile.TemporaryDirectory() as directory:
            target = Path(directory)
            for name in ("prometheus-service-monitor.yaml", "prometheus-rules.yaml"):
                (target / name).write_text((ROOT / "deploy/observability" / name).read_text())
            monitor = target / "prometheus-service-monitor.yaml"
            monitor.write_text(monitor.read_text().replace("path: /metrics", "path: /").replace("- cosmic-clash", "- default"))
            result = self.run_checker(target)
            self.assertNotEqual(result.returncode, 0)
            self.assertIn("namespace", result.stderr)


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