from flask import request, jsonify, current_app
from . import api_bp
from .license import require_admin
import os

# 系统设置配置项映射
CONFIG_MAPPING = {
    # 基本设置
    'site_name': 'SITE_NAME',
    'admin_email': 'ADMIN_EMAIL',
    'max_failed_attempts': 'MAX_FAILED_ATTEMPTS',
    'lockout_minutes': 'LOCKOUT_MINUTES',
    'max_unbind_times': 'MAX_UNBIND_TIMES',
    'auth_secret_key': 'AUTH_SECRET_KEY',
    
    # 卡密设置
    'license_key_length': 'LICENSE_KEY_LENGTH',
    'license_key_prefix': 'LICENSE_KEY_PREFIX',
    'trial_prefix': 'TRIAL_PREFIX',
    'offline_cache_days': 'OFFLINE_CACHE_DAYS',
    
    # API设置
    'api_version': 'API_VERSION',
    'items_per_page': 'ITEMS_PER_PAGE',
    
    # 文件上传设置
    'max_content_length': 'MAX_CONTENT_LENGTH',
    'upload_folder': 'UPLOAD_FOLDER',
    
    # 会话设置
    'session_lifetime_hours': 'SESSION_LIFETIME_HOURS'
}

@require_admin
@api_bp.route('/settings', methods=['POST'])
def save_settings():
    """保存系统设置"""
    try:
        data = request.get_json()
        if not data:
            return jsonify({'success': False, 'message': '请求数据为空'}), 400
        
        # 获取当前应用配置
        app_config = current_app.config
        
        # 更新配置项
        updated_configs = {}
        for key, value in data.items():
            if key in CONFIG_MAPPING:
                config_key = CONFIG_MAPPING[key]
                # 类型转换
                if key in ['max_failed_attempts', 'lockout_minutes', 'max_unbind_times', 
                          'license_key_length', 'offline_cache_days', 'items_per_page']:
                    value = int(value)
                elif key == 'max_content_length':
                    # 转换为字节
                    value = int(value) * 1024 * 1024
                elif key == 'session_lifetime_hours':
                    # 转换为秒
                    value = int(value) * 3600
                
                # 更新配置
                app_config[config_key] = value
                updated_configs[config_key] = value
        
        # 特殊处理会话生命周期
        if 'SESSION_LIFETIME_HOURS' in updated_configs:
            from datetime import timedelta
            app_config['PERMANENT_SESSION_LIFETIME'] = timedelta(seconds=updated_configs['SESSION_LIFETIME_HOURS'])
        
        return jsonify({
            'success': True, 
            'message': '设置保存成功',
            'updated_configs': updated_configs
        })
        
    except Exception as e:
        current_app.logger.error(f"保存设置失败: {str(e)}")
        return jsonify({'success': False, 'message': '服务器内部错误'}), 500