from __future__ import annotations

import importlib.util
import json
import tempfile
import unittest
from contextlib import redirect_stdout
from io import StringIO
from pathlib import Path


REPO_ROOT = Path(__file__).resolve().parents[1]
CATALOG = REPO_ROOT / "skills" / "tester" / "scripts" / "catalog.py"


def load_catalog_module():
    spec = importlib.util.spec_from_file_location("tester_catalog", CATALOG)
    assert spec and spec.loader
    module = importlib.util.module_from_spec(spec)
    spec.loader.exec_module(module)
    return module


class TesterCatalogRootTests(unittest.TestCase):
    def test_discovers_parent_and_nested_project_without_merging_cases(self) -> None:
        catalog = load_catalog_module()
        with tempfile.TemporaryDirectory() as temp:
            root = Path(temp)
            for project, name in ((root, "backend"), (root / "app", "Writes")):
                (project / ".pouch" / "tester").mkdir(parents=True)
                (project / ".pouch" / "tester" / "catalog.yaml").write_text(
                    f"project:\n  name: {name}\n", encoding="utf-8"
                )

            self.assertEqual(catalog.discover_catalog_roots(root), [root, root / "app"])

    def test_roots_command_reports_each_catalog_path(self) -> None:
        catalog = load_catalog_module()
        with tempfile.TemporaryDirectory() as temp:
            root = Path(temp)
            app = root / "app" / ".pouch" / "tester"
            app.mkdir(parents=True)
            (app / "catalog.yaml").write_text("project:\n  name: Writes\n", encoding="utf-8")
            output = StringIO()
            with redirect_stdout(output):
                self.assertEqual(catalog.cmd_roots(root), 0)
            payload = json.loads(output.getvalue())
            self.assertEqual(payload["count"], 1)
            self.assertEqual(payload["roots"][0]["relative"], "app")
            self.assertEqual(payload["roots"][0]["project"], "Writes")


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