from flask import Blueprint, render_template, jsonify, request, send_from_directory, current_app
from .auth import login_required
import logging
import os
import time
from datetime import datetime
import platform
import psutil
from collections import deque

# 创建系统信息蓝图
system_bp = Blueprint('system', __name__)
logger = logging.getLogger("SystemBlueprint")

# 页面路由
@system_bp.route('/wx_logs')
@login_required
def wx_logs():
    return render_template('wx_logs.html')

# API路由
@system_bp.route('/api/system_info')
@login_required
def api_system_info():
    try:
        # 获取系统信息
        system_info = {
            "os": platform.system(),
            "os_version": platform.version(),
            "python_version": platform.python_version(),
            "cpu_usage": psutil.cpu_percent(),
            "memory_usage": psutil.virtual_memory().percent,
            "disk_usage": psutil.disk_usage('/').percent,
            "uptime": time.time() - psutil.boot_time(),
            "timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        }

        return jsonify({"success": True, "data": system_info})
    except Exception as e:
        logger.error(f"获取系统信息失败: {e}")
        return jsonify({"success": False, "error": str(e)}), 500

@system_bp.route('/api/wx_logs')
@login_required
def api_wx_logs():
    try:
        log_type = request.args.get('type', 'info')  # 默认显示info日志
        lines = request.args.get('lines', 100, type=int)  # 默认显示最后100行

        # 修正日志文件路径计算，获取项目根目录
        # 从当前文件位置向上导航3层到项目根目录
        # blueprints -> dashboard -> admin -> WeChatRobot
        project_root = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..', '..'))
        
        if log_type == 'error':
            log_file = os.path.join(project_root, 'wx_error.log')
        else:
            log_file = os.path.join(project_root, 'wx_info.log')
        
        # logger.info(f"尝试读取日志文件: {log_file}")

        # 读取日志文件
        log_content = []
        if os.path.exists(log_file):
            with open(log_file, 'r', encoding='utf-8', errors='ignore') as f:
                # 使用deque获取最后N行
                log_content = list(deque(f, lines))
        else:
            logger.warning(f"日志文件不存在: {log_file}")
            
            # 尝试列出项目根目录下的所有日志文件，帮助调试
            try:
                all_files = [f for f in os.listdir(project_root) if f.endswith('.log')]
                logger.info(f"项目根目录下的日志文件: {all_files}")
            except Exception as e:
                logger.error(f"列出目录文件失败: {e}")

        return jsonify({
            "success": True,
            "data": {
                "log_type": log_type,
                "log_file": log_file,
                "content": log_content,
                "lines": len(log_content)
            }
        })
    except Exception as e:
        logger.error(f"获取微信日志失败: {e}")
        return jsonify({"success": False, "error": str(e)}), 500