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


ROOT = Path(__file__).resolve().parents[1]
SCRIPT = ROOT / "scripts" / "build_tsl_playbook.py"


class BuildTslPlaybookTests(unittest.TestCase):
    def test_builds_minimal_tsl_playbook_tree(self):
        with tempfile.TemporaryDirectory() as tmp_dir:
            output = Path(tmp_dir) / "tsl-playbook"

            result = subprocess.run(
                [sys.executable, str(SCRIPT), "--output", str(output)],
                capture_output=True,
                text=True,
            )

            self.assertEqual(result.returncode, 0, msg=result.stderr)
            self.assertEqual(
                sorted(path.name for path in output.iterdir()),
                ["AGENTS.md", "docs", "skills"],
            )
            self.assertFalse((output / "playbook.toml").exists())
            self.assertFalse((output / ".agents").exists())
            self.assertFalse((output / "docs" / "index.md").exists())

            self.assertTrue((output / "docs" / "tsl" / "index.md").is_file())
            self.assertTrue(
                (output / "skills" / "tsl-api-reference" / "SKILL.md").is_file()
            )
            self.assertTrue(
                (
                    output
                    / "skills"
                    / "tsl-api-reference"
                    / "scripts"
                    / "lookup.py"
                ).is_file()
            )

            agents_text = (output / "AGENTS.md").read_text(encoding="utf-8")
            self.assertIn("# TSL Agent Instructions", agents_text)
            self.assertIn("docs/tsl/index.md", agents_text)
            self.assertIn("tsl-api-reference", agents_text)
            self.assertNotIn(".agents/index.md", agents_text)
            self.assertNotIn(".agents/tsl/index.md", agents_text)

            source_docs = count_files(ROOT / "docs" / "tsl")
            output_docs = count_files(output / "docs" / "tsl")
            self.assertEqual(output_docs, source_docs)

            source_skill = count_files(ROOT / "skills" / "tsl-api-reference")
            output_skill = count_files(output / "skills" / "tsl-api-reference")
            self.assertEqual(output_skill, source_skill)


def count_files(path: Path) -> int:
    return sum(1 for item in path.rglob("*") if item.is_file())


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