from __future__ import annotations

import os
import stat
import subprocess
from pathlib import Path


def _run_start_server(
    tmp_path: Path,
    *,
    reload_enabled: bool,
) -> subprocess.CompletedProcess[str]:
    fake_python = tmp_path / "fake-python.sh"
    fake_python.write_text(
        """#!/usr/bin/env sh
printf 'ARG:%s\n' "$@"
""",
        encoding="utf-8",
    )
    fake_python.chmod(fake_python.stat().st_mode | stat.S_IEXEC)

    script_path = Path(__file__).resolve().parents[1] / "server_start.sh"
    script_prefix = script_path.read_text(encoding="utf-8").split('case "$MODE" in', 1)[0]
    command = f"""{script_prefix}
PYTHON_BIN="{fake_python}"
SERVER_HOST="127.0.0.1"
SERVER_PORT="8765"
SERVER_RELOAD="{'true' if reload_enabled else 'false'}"
SERVER_WORKERS="1"
start_server
"""
    return subprocess.run(
        ["bash", "-c", command],
        capture_output=True,
        text=True,
        env={**os.environ, "MODE": "test"},
        cwd=script_path.parent,
        check=False,
    )


def test_dependencies_ready_fails_when_jwt_is_missing(tmp_path: Path) -> None:
    fake_python = tmp_path / "fake-python.sh"
    fake_python.write_text(
        """#!/usr/bin/env bash
if [ "$1" = "-c" ]; then
  case "$2" in
    *jwt*) exit 1 ;;
    *) exit 0 ;;
  esac
fi
exit 0
""",
        encoding="utf-8",
    )
    fake_python.chmod(fake_python.stat().st_mode | stat.S_IEXEC)

    script_path = Path(__file__).resolve().parents[1] / "server_start.sh"
    script_prefix = script_path.read_text(encoding="utf-8").split('case "$MODE" in', 1)[0]
    command = f"""{script_prefix}
PYTHON_BIN="{fake_python}"
dependencies_ready
"""
    result = subprocess.run(
        ["bash", "-c", command],
        capture_output=True,
        text=True,
        env={**os.environ, "MODE": "test"},
        cwd=script_path.parent,
        check=False,
    )

    assert result.returncode != 0


def test_reload_watches_only_server_source_directory(tmp_path: Path) -> None:
    result = _run_start_server(tmp_path, reload_enabled=True)

    assert result.returncode == 0, result.stderr
    assert "ARG:--reload" in result.stdout
    assert "ARG:--reload-dir\nARG:src" in result.stdout
    assert "ARG:--app-dir\nARG:src" in result.stdout


def test_non_reload_server_command_remains_unchanged(tmp_path: Path) -> None:
    result = _run_start_server(tmp_path, reload_enabled=False)

    assert result.returncode == 0, result.stderr
    assert "ARG:app.main:app" in result.stdout
    assert "ARG:--host\nARG:127.0.0.1" in result.stdout
    assert "ARG:--port\nARG:8765" in result.stdout
    assert "ARG:--reload" not in result.stdout
    assert "ARG:--reload-dir" not in result.stdout