"""
Mind CLI — macOS Service 注册。

通过 launchd plist 实现 `mind start` 开机自启。
"""

import os
import platform
import shutil
import subprocess
import sys
import textwrap

_LABEL = "club.brainwork.mindcli"
_PLIST_DIR = os.path.expanduser("~/Library/LaunchAgents")
_PLIST_PATH = os.path.join(_PLIST_DIR, f"{_LABEL}.plist")
_LOG_PATH = os.path.expanduser("~/Library/Logs/mindcli.log")


def _find_mind_executable() -> str:
    """定位 mind 可执行文件路径。"""
    # 优先使用 which
    result = shutil.which("mind")
    if result:
        return result
    # 回退：当前 Python 的 scripts 目录
    scripts_dir = os.path.join(os.path.dirname(sys.executable), "mind")
    if os.path.isfile(scripts_dir):
        return scripts_dir
    raise FileNotFoundError(
        "找不到 mind 可执行文件。请确认已运行 `pip install -e .` 安装 mindos-cli。"
    )


def install_service() -> None:
    """
    注册 Mind CLI 为 macOS launchd 服务。

    生成 plist → launchctl load → 开机自启。
    """
    if platform.system() != "Darwin":
        print("⚠️ install-service 目前仅支持 macOS。")
        print("   Linux 用户请手动创建 systemd unit。")
        return

    mind_path = _find_mind_executable()
    os.makedirs(_PLIST_DIR, exist_ok=True)

    plist_content = textwrap.dedent(f"""\
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
      "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
    <plist version="1.0">
    <dict>
        <key>Label</key>
        <string>{_LABEL}</string>

        <key>ProgramArguments</key>
        <array>
            <string>{mind_path}</string>
            <string>start</string>
        </array>

        <key>RunAtLoad</key>
        <true/>

        <key>KeepAlive</key>
        <true/>

        <key>StandardOutPath</key>
        <string>{_LOG_PATH}</string>

        <key>StandardErrorPath</key>
        <string>{_LOG_PATH}</string>

        <key>ThrottleInterval</key>
        <integer>10</integer>
    </dict>
    </plist>
    """)

    with open(_PLIST_PATH, "w") as f:
        f.write(plist_content)

    # launchctl load
    subprocess.run(["launchctl", "load", _PLIST_PATH], check=True)

    print(f"✅ Mind CLI 已注册为 launchd 服务")
    print(f"   Plist:  {_PLIST_PATH}")
    print(f"   Log:    {_LOG_PATH}")
    print(f"   Binary: {mind_path}")
    print(f"\n   服务将在登录时自动启动。")
    print(f"   手动启动：launchctl start {_LABEL}")
    print(f"   手动停止：launchctl stop {_LABEL}")


def uninstall_service() -> None:
    """
    注销 Mind CLI launchd 服务。

    launchctl unload → 删除 plist。
    """
    if platform.system() != "Darwin":
        print("⚠️ uninstall-service 目前仅支持 macOS。")
        return

    if not os.path.isfile(_PLIST_PATH):
        print(f"⚠️ 未找到 plist: {_PLIST_PATH}")
        print(f"   Mind CLI 可能未注册为服务。")
        return

    subprocess.run(["launchctl", "unload", _PLIST_PATH], check=False)
    os.remove(_PLIST_PATH)

    print(f"✅ Mind CLI 服务已注销")
    print(f"   已删除: {_PLIST_PATH}")