"""Exercise mounted CLI scripts against the exact image Kanban API."""

from __future__ import annotations

import json
import os
import sys
import tempfile
import unittest
from pathlib import Path
from unittest import mock


_HOME = tempfile.TemporaryDirectory(prefix="hermes-lane-compatibility-")
os.environ["HERMES_HOME"] = _HOME.name
os.environ["HERMES_CLI_LANE_CONCURRENCY"] = "1"
lane_source = Path(os.environ["HERMES_CLI_LANE_SOURCE"])
sys.path.insert(0, str(lane_source))

from cli_lane_capabilities import (  # noqa: E402
    detect_kanban_capabilities,
    initialize_kanban_capabilities,
    runtime_health,
)
from cli_lane_config import TerminalIdentity  # noqa: E402
from cli_lane_dispatch import recover_orphans  # noqa: E402
from cli_lane_finalization import _finalize_document_db  # noqa: E402
from hermes_cli import kanban_db  # noqa: E402


class MountedLaneCompatibilityTests(unittest.TestCase):
    """Verify safe behavior before and after the image API patch."""

    def setUp(self) -> None:
        self.connection = kanban_db.connect()

    def tearDown(self) -> None:
        self.connection.close()

    @staticmethod
    def _document(summary: str) -> dict:
        return {
            "result": json.dumps(
                {
                    "status": "completed",
                    "summary": summary,
                    "changed_files": [],
                    "tests_run": ["mixed source compatibility"],
                    "artifacts": [],
                    "findings": [],
                    "blockers": [],
                },
                sort_keys=True,
            ),
            "summary": summary,
            "metadata": {"matrix": os.environ["HERMES_COMPATIBILITY_MODE"]},
        }

    def test_exact_image_api_matrix(self) -> None:
        mode = os.environ["HERMES_COMPATIBILITY_MODE"]
        capabilities = initialize_kanban_capabilities(kanban_db)
        self.assertTrue(capabilities.exact_run_completion)
        self.assertEqual(capabilities.ready, mode == "patched")
        self.assertEqual(runtime_health()["state"], "ready" if mode == "patched" else "deferred")
        self.assertLess(Path(_HOME.name, "cli-lanes/runtime-health.json").stat().st_size, 2048)

    def test_current_active_run_completion_stays_safe(self) -> None:
        task_id = kanban_db.create_task(self.connection, title="active accepted result")
        self.assertIsNotNone(kanban_db.claim_task(self.connection, task_id))
        run_id = kanban_db.get_task(self.connection, task_id).current_run_id
        outcome = _finalize_document_db(
            kanban_db,
            TerminalIdentity("default", task_id, run_id, "pending"),
            self._document("active result"),
        )
        self.assertEqual(outcome, "committed")
        self.assertEqual(kanban_db.get_task(self.connection, task_id).status, "done")

    def test_ended_run_replay_is_enabled_only_after_patch(self) -> None:
        mode = os.environ["HERMES_COMPATIBILITY_MODE"]
        task_id = kanban_db.create_task(self.connection, title="ended accepted result")
        self.assertIsNotNone(kanban_db.claim_task(self.connection, task_id))
        run_id = kanban_db.get_task(self.connection, task_id).current_run_id
        self.assertTrue(
            kanban_db.block_task(
                self.connection,
                task_id,
                reason="simulate post-journal error",
                expected_run_id=run_id,
            )
        )
        outcome = _finalize_document_db(
            kanban_db,
            TerminalIdentity("default", task_id, run_id, "pending"),
            self._document("ended result"),
        )
        self.assertEqual(outcome, "committed" if mode == "patched" else "deferred")

    def test_old_reclaim_api_is_never_called_unguarded(self) -> None:
        capabilities = detect_kanban_capabilities(kanban_db)
        if capabilities.exact_run_reclaim:
            self.skipTest("patched API exercises guarded reclaim in the exact-run suite")
        with mock.patch.object(
            kanban_db,
            "reclaim_task",
            side_effect=AssertionError("legacy unguarded reclaim called"),
        ), mock.patch("cli_lane_dispatch.recover_pending_finalizations", return_value=0):
            recover_orphans()


def main() -> int:
    """Run the compatibility matrix for the selected exact image source."""
    result = unittest.TextTestRunner(verbosity=2).run(
        unittest.defaultTestLoader.loadTestsFromTestCase(MountedLaneCompatibilityTests)
    )
    return 0 if result.wasSuccessful() else 1


if __name__ == "__main__":
    raise SystemExit(main())