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

ROOT = Path(__file__).resolve().parents[2]
SCRIPT = ROOT / "scripts" / "playbook.py"


def run_cli(*args):
    return subprocess.run(
        [sys.executable, str(SCRIPT), *args],
        capture_output=True,
        text=True,
    )


class PlaybookCliTests(unittest.TestCase):
    def test_help_shows_usage(self):
        result = run_cli("-h")
        self.assertEqual(result.returncode, 0)
        self.assertIn("Usage:", result.stdout + result.stderr)

    def test_missing_config_is_error(self):
        result = run_cli()
        self.assertNotEqual(result.returncode, 0)
        self.assertIn("-config", result.stdout + result.stderr)

    def test_action_order(self):
        config_body = """
[playbook]
project_root = "."

[format_md]

[sync_standards]
langs = ["tsl"]
"""
        with tempfile.TemporaryDirectory() as tmp_dir:
            config_path = Path(tmp_dir) / "playbook.toml"
            config_path.write_text(config_body, encoding="utf-8")
            result = run_cli("-config", str(config_path))

        self.assertEqual(result.returncode, 0)
        output = result.stdout + result.stderr
        self.assertIn("sync_standards", output)
        self.assertIn("format_md", output)

    def test_vendor_creates_snapshot(self):
        with tempfile.TemporaryDirectory() as tmp_dir:
            config_body = f"""
[playbook]
project_root = "{tmp_dir}"

[vendor]
langs = ["tsl"]
"""
            config_path = Path(tmp_dir) / "playbook.toml"
            config_path.write_text(config_body, encoding="utf-8")

            result = run_cli("-config", str(config_path))

            snapshot = Path(tmp_dir) / "docs/standards/playbook/SOURCE.md"
            self.assertEqual(result.returncode, 0)
            self.assertTrue(snapshot.is_file())

    def test_sync_memory_bank_creates_memory_bank(self):
        with tempfile.TemporaryDirectory() as tmp_dir:
            config_body = f"""
[playbook]
project_root = "{tmp_dir}"

[sync_memory_bank]
project_name = "Demo"
"""
            config_path = Path(tmp_dir) / "playbook.toml"
            config_path.write_text(config_body, encoding="utf-8")

            result = run_cli("-config", str(config_path))

            memory_bank = Path(tmp_dir) / "memory-bank/project-brief.md"
            self.assertEqual(result.returncode, 0)
            self.assertTrue(memory_bank.is_file())

    def test_sync_standards_creates_agents(self):
        with tempfile.TemporaryDirectory() as tmp_dir:
            config_body = f"""
[playbook]
project_root = "{tmp_dir}"

[sync_standards]
langs = ["tsl"]
"""
            config_path = Path(tmp_dir) / "playbook.toml"
            config_path.write_text(config_body, encoding="utf-8")

            result = run_cli("-config", str(config_path))

            agents_index = Path(tmp_dir) / ".agents/tsl/index.md"
            self.assertEqual(result.returncode, 0)
            self.assertTrue(agents_index.is_file())

    def test_sync_standards_agents_block_has_blank_lines(self):
        with tempfile.TemporaryDirectory() as tmp_dir:
            config_body = f"""
[playbook]
project_root = "{tmp_dir}"

[sync_standards]
langs = ["tsl"]
"""
            config_path = Path(tmp_dir) / "playbook.toml"
            config_path.write_text(config_body, encoding="utf-8")

            result = run_cli("-config", str(config_path))
            self.assertEqual(result.returncode, 0)

            agents_md = Path(tmp_dir) / "AGENTS.md"
            lines = agents_md.read_text(encoding="utf-8").splitlines()
            start_idx = lines.index("<!-- playbook:agents:start -->")
            end_idx = lines.index("<!-- playbook:agents:end -->")
            block = lines[start_idx : end_idx + 1]
            self.assertEqual(block[1], "")
            bullet_idx = next(i for i, line in enumerate(block) if line.startswith("- "))
            self.assertEqual(block[bullet_idx - 1], "")

    def test_install_skills(self):
        with tempfile.TemporaryDirectory() as tmp_dir:
            target = Path(tmp_dir) / "codex"
            config_body = f"""
[playbook]
project_root = "{tmp_dir}"

[install_skills]
codex_home = "{target}"
mode = "list"
skills = ["brainstorming"]
"""
            config_path = Path(tmp_dir) / "playbook.toml"
            config_path.write_text(config_body, encoding="utf-8")

            result = run_cli("-config", str(config_path))

            skill_file = target / "skills/brainstorming/SKILL.md"
            self.assertEqual(result.returncode, 0)
            self.assertTrue(skill_file.is_file())

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