"""Retirement must remove launch authority without disabling D3 helpers."""
from __future__ import annotations

import ast
from pathlib import Path
import subprocess
import sys
import unittest


ROOT = Path(__file__).resolve().parents[1]


class MonolithRetirementTest(unittest.TestCase):
    def test_classic_ci_deployment_is_absent(self):
        for relative in (
            ".github/workflows/deploy-ci-single-mode-environment.yml",
            "deployments/offline/runtime/deploy_ci_env.py",
            "ops/ec2/ensure_tidb_docker.sh",
        ):
            self.assertFalse((ROOT / relative).exists(), relative)

    def test_shared_modules_cannot_generate_or_start_a_monolithic_server(self):
        for relative in (
            "deployments/offline/runtime/common.py",
            "deploy/online/runtime/common.py",
        ):
            source = (ROOT / relative).read_text()
            tree = ast.parse(source)
            names = {node.name for node in tree.body if isinstance(node, ast.FunctionDef)}
            self.assertFalse(names & {"write_backend_runner", "start_backend", "distribution_server_package_for_tags", "install_systemd_unit"}, relative)
            for node in ast.walk(tree):
                if isinstance(node, ast.Constant) and isinstance(node.value, str):
                    self.assertNotIn("./cmd/crm-server", node.value, relative)
                    self.assertNotIn("./cmd/server", node.value, relative)

    def test_retired_cli_fails_before_reading_environment_or_mutating_host(self):
        for module in ("deploy_offline_env", "deploy_staging_env"):
            result = subprocess.run(
                [sys.executable, str(ROOT / "deployments/offline/runtime" / f"{module}.py"), "--env-file", "/does-not-exist/runtime.env"],
                text=True, capture_output=True, timeout=15,
            )
            self.assertNotEqual(0, result.returncode)
            self.assertIn("Classic monolithic deployment is retired", result.stderr)
            self.assertNotIn("Traceback", result.stderr)


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