#!/usr/bin/env python3
"""
Skill 发布脚本

使用方式:
  uv run python publish.py
"""

import os
import sys
import shutil
import subprocess
import tempfile


TARGET_REPO_URL = "https://github.com/lanyuanxiaoyao/skills.git"
TARGET_PATH = "skills/lyxy-document-reader"


def check_build_dir(build_dir: str) -> None:
    """
    检查 build/ 目录是否存在

    Args:
        build_dir: build 目录路径

    Raises:
        SystemExit: 目录不存在时退出
    """
    if not os.path.exists(build_dir):
        print("错误: build/ 目录不存在")
        print("请先运行 build.py:")
        print("  uv run python build.py")
        sys.exit(1)


def check_build_skill_md(build_skill_md_path: str) -> None:
    """
    检查 build/SKILL.md 是否存在

    Args:
        build_skill_md_path: build/SKILL.md 路径

    Raises:
        SystemExit: 文件不存在时退出
    """
    if not os.path.exists(build_skill_md_path):
        print("错误: build/SKILL.md 不存在")
        print("请先运行 build.py:")
        print("  uv run python build.py")
        sys.exit(1)


def parse_version_from_skill_md(skill_md_path: str) -> str:
    """
    从 SKILL.md 解析出版本号

    Args:
        skill_md_path: SKILL.md 路径

    Returns:
        版本号字符串

    Raises:
        SystemExit: 解析失败时退出
    """
    with open(skill_md_path, "r", encoding="utf-8") as f:
        content = f.read()

    # 简单解析 YAML frontmatter 中的 version
    lines = content.split("\n")
    in_frontmatter = False
    in_metadata = False
    for line in lines:
        stripped = line.strip()
        if stripped == "---":
            if not in_frontmatter:
                in_frontmatter = True
            else:
                break
            continue
        if in_frontmatter:
            if stripped == "metadata:":
                in_metadata = True
            elif in_metadata and stripped.startswith("version:"):
                # 提取版本号，去掉引号
                version_part = stripped.split(":", 1)[1].strip()
                version = version_part.strip('"').strip("'")
                return version
            elif in_metadata and stripped and not stripped.startswith(" "):
                # metadata 块结束
                in_metadata = False

    print("错误: 无法从 build/SKILL.md 解析版本号")
    print("请检查 build/SKILL.md 是否包含 metadata.version 字段")
    sys.exit(1)


def run_git_command(repo_dir: str, args: list[str]) -> subprocess.CompletedProcess:
    """
    在指定目录运行 git 命令

    Args:
        repo_dir: 仓库目录
        args: git 命令参数列表

    Returns:
        subprocess.CompletedProcess

    Raises:
        subprocess.CalledProcessError: 命令失败时
    """
    cmd = ["git"] + args
    return subprocess.run(
        cmd,
        cwd=repo_dir,
        check=True,
        capture_output=True,
        text=True
    )


def clone_repo(temp_dir: str) -> str:
    """
    在临时目录 clone 目标仓库

    Args:
        temp_dir: 临时目录路径

    Returns:
        仓库目录路径

    Raises:
        SystemExit: clone 失败时退出
    """
    repo_dir = os.path.join(temp_dir, "skills-repo")

    try:
        run_git_command(temp_dir, ["clone", "--depth", "1", TARGET_REPO_URL, "skills-repo"])
    except subprocess.CalledProcessError as e:
        print(f"错误: Clone 仓库失败")
        print(f"  返回码: {e.returncode}")
        print(f"  标准输出: {e.stdout}")
        print(f"  错误输出: {e.stderr}")
        sys.exit(1)

    return repo_dir


def clear_target_dir(repo_dir: str) -> str:
    """
    清空目标路径目录

    Args:
        repo_dir: 仓库目录

    Returns:
        目标目录路径
    """
    target_dir = os.path.join(repo_dir, TARGET_PATH)

    if os.path.exists(target_dir):
        shutil.rmtree(target_dir)

    os.makedirs(target_dir, exist_ok=True)
    return target_dir


def copy_build_contents(build_dir: str, target_dir: str) -> None:
    """
    复制 build/ 内容到目标目录

    Args:
        build_dir: build 源目录
        target_dir: 目标目录
    """
    for item in os.listdir(build_dir):
        src = os.path.join(build_dir, item)
        dst = os.path.join(target_dir, item)

        if os.path.isdir(src):
            shutil.copytree(src, dst)
        else:
            shutil.copy2(src, dst)


def git_commit_and_push(repo_dir: str, version: str) -> None:
    """
    执行 git add / commit / push

    Args:
        repo_dir: 仓库目录
        version: 版本号

    Raises:
        SystemExit: git 操作失败时退出
    """
    commit_message = f"publish: lyxy-document-reader {version}"

    try:
        run_git_command(repo_dir, ["add", "."])
        run_git_command(repo_dir, ["commit", "-m", commit_message])
        run_git_command(repo_dir, ["push"])
    except subprocess.CalledProcessError as e:
        print(f"错误: Git 操作失败")
        print(f"  返回码: {e.returncode}")
        print(f"  标准输出: {e.stdout}")
        print(f"  错误输出: {e.stderr}")
        sys.exit(1)


def main() -> None:
    """
    主函数：执行完整的发布流程
    """
    # 路径配置
    project_root = os.path.dirname(os.path.abspath(__file__))
    build_dir = os.path.join(project_root, "build")
    build_skill_md_path = os.path.join(build_dir, "SKILL.md")

    # 检查 build/ 目录
    check_build_dir(build_dir)
    check_build_skill_md(build_skill_md_path)

    # 解析版本号
    version = parse_version_from_skill_md(build_skill_md_path)

    # 使用临时目录
    with tempfile.TemporaryDirectory(prefix="lyxy-publish-") as temp_dir:
        # Clone 仓库
        repo_dir = clone_repo(temp_dir)

        # 清空目标路径
        target_dir = clear_target_dir(repo_dir)

        # 复制内容
        copy_build_contents(build_dir, target_dir)

        # Git 提交并推送
        git_commit_and_push(repo_dir, version)


if __name__ == "__main__":
    main()