from __future__ import annotations

import os
import subprocess
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parent.parent


def run_cli(*args: str, cwd: Path | None = None) -> subprocess.CompletedProcess[str]:
    env = {"PYTHONPATH": str(ROOT), **os.environ}
    return subprocess.run(
        [sys.executable, "-m", "kz", *args],
        cwd=cwd or ROOT,
        capture_output=True,
        text=True,
        check=False,
        env=env,
    )


def test_python_module_help_works():
    result = run_cli("--help")
    assert result.returncode == 0
    assert "Task Routing CLI" in result.stdout


def test_python_module_think_request_outputs_yaml():
    result = run_cli("Plane", "Phase", "4", "fuer", "Kommandozentrale")
    assert result.returncode == 0
    assert "task_class: THINK" in result.stdout
    assert "harness: Claude Code" in result.stdout


def test_python_module_save_creates_decision(tmp_path):
    result = run_cli("Plane", "Release", "--save", cwd=tmp_path)
    assert result.returncode == 0
    decision_dir = tmp_path / "DECISIONS"
    assert decision_dir.exists()
    assert any(item.suffix == ".yaml" for item in decision_dir.iterdir())


def test_python_module_save_writes_utf8_yaml(tmp_path):
    result = run_cli("Fixe", "Änderung", "im", "Parser", "--save", cwd=tmp_path)
    assert result.returncode == 0
    decision_file = next((tmp_path / "DECISIONS").glob("*.yaml"))
    content = decision_file.read_text(encoding="utf-8")
    assert "Änderung" in content
    assert "\\x" not in content