#!/usr/bin/env python3
# -*- coding: utf-8 -*-

"""
调试工具 - 用于分析 Clash Core 的运行环境
"""

import os
import sys
import subprocess
import logging
import platform
import json

logger = logging.getLogger(__name__)

def check_binary(binary_path):
    """检查二进制文件，并返回详细信息"""
    results = {
        "path": binary_path,
        "exists": os.path.exists(binary_path),
        "size": 0,
        "permissions": "",
        "file_type": "",
        "ldd_output": "",
        "system_info": get_system_info()
    }
    
    if results["exists"]:
        try:
            # 获取文件大小
            results["size"] = os.path.getsize(binary_path)
            
            # 获取文件权限
            results["permissions"] = oct(os.stat(binary_path).st_mode)[-3:]
            
            # 检查是否可执行
            results["is_executable"] = os.access(binary_path, os.X_OK)
            
            # 获取文件类型 (file 命令)
            try:
                file_output = subprocess.check_output(["file", binary_path], universal_newlines=True)
                results["file_type"] = file_output.strip()
            except Exception as e:
                results["file_type_error"] = str(e)
            
            # 获取库依赖 (ldd 命令)
            try:
                ldd_output = subprocess.check_output(["ldd", binary_path], universal_newlines=True)
                results["ldd_output"] = ldd_output.strip()
            except Exception as e:
                results["ldd_error"] = str(e)
            
            # 尝试直接执行获取版本或帮助
            try:
                version_output = subprocess.check_output([binary_path, "-v"], stderr=subprocess.STDOUT, universal_newlines=True, timeout=2)
                results["version_output"] = version_output.strip()
            except Exception as e:
                results["version_error"] = str(e)
                
                # 如果 -v 失败，尝试 --version
                try:
                    version_output = subprocess.check_output([binary_path, "--version"], stderr=subprocess.STDOUT, universal_newlines=True, timeout=2)
                    results["version_output"] = version_output.strip()
                except Exception as e2:
                    results["version_error_alt"] = str(e2)
            
        except Exception as e:
            results["error"] = str(e)
    
    return results

def get_system_info():
    """获取系统信息"""
    info = {
        "platform": platform.platform(),
        "system": platform.system(),
        "release": platform.release(),
        "version": platform.version(),
        "architecture": platform.machine(),
        "python_version": sys.version,
        "cwd": os.getcwd(),
        "env": {key: value for key, value in os.environ.items()}
    }
    return info

def check_clash_environment(clash_path, config_path):
    """检查 Clash 运行环境"""
    results = {
        "clash_binary": check_binary(clash_path),
        "config_file": {
            "path": config_path,
            "exists": os.path.exists(config_path),
            "size": 0,
            "content_preview": ""
        },
        "directory_info": {}
    }
    
    # 检查配置文件
    if results["config_file"]["exists"]:
        try:
            results["config_file"]["size"] = os.path.getsize(config_path)
            with open(config_path, 'r', encoding='utf-8') as f:
                content = f.read(1000)  # 读取前1000个字符
                results["config_file"]["content_preview"] = content
        except Exception as e:
            results["config_file"]["error"] = str(e)
    
    # 检查目录结构
    dirs_to_check = [
        os.path.dirname(clash_path),
        os.path.dirname(config_path),
        ".",
        "./data",
        "./clash_core",
        "./subconverter"
    ]
    
    for dir_path in dirs_to_check:
        try:
            if os.path.exists(dir_path):
                files = os.listdir(dir_path)
                results["directory_info"][dir_path] = {
                    "exists": True,
                    "files": files,
                    "permissions": oct(os.stat(dir_path).st_mode)[-3:]
                }
            else:
                results["directory_info"][dir_path] = {
                    "exists": False
                }
        except Exception as e:
            results["directory_info"][dir_path] = {
                "error": str(e)
            }
    
    return results

def run_debug_diagnostics(clash_path, config_path):
    """运行调试诊断，并记录结果"""
    logger.info("运行调试诊断...")
    
    try:
        results = check_clash_environment(clash_path, config_path)
        logger.info("诊断完成")
        
        # 将结果保存到文件
        diagnostics_file = "clash_diagnostics.json"
        with open(diagnostics_file, 'w', encoding='utf-8') as f:
            json.dump(results, f, indent=2, ensure_ascii=False)
        logger.info(f"诊断结果已保存到 {diagnostics_file}")
        
        # 打印关键信息
        if results["clash_binary"]["exists"]:
            logger.info(f"Clash 二进制文件: {results['clash_binary']['path']}")
            logger.info(f"  - 大小: {results['clash_binary']['size']} 字节")
            logger.info(f"  - 权限: {results['clash_binary']['permissions']}")
            logger.info(f"  - 文件类型: {results['clash_binary']['file_type']}")
            logger.info(f"  - 可执行: {results['clash_binary'].get('is_executable', False)}")
        else:
            logger.error(f"Clash 二进制文件不存在: {results['clash_binary']['path']}")
        
        if results["config_file"]["exists"]:
            logger.info(f"配置文件: {results['config_file']['path']}")
            logger.info(f"  - 大小: {results['config_file']['size']} 字节")
            preview = results["config_file"].get("content_preview", "")
            if preview:
                logger.info(f"  - 内容预览: {preview[:100]}...")
        else:
            logger.error(f"配置文件不存在: {results['config_file']['path']}")
        
        return results
    
    except Exception as e:
        logger.error(f"诊断过程中出错: {str(e)}")
        return {"error": str(e)}