#!/usr/bin/env python3
"""
配置管理 API 路由
"""

import os
import json
import shutil
from datetime import datetime
from flask import jsonify, request
from config import PROJECTS_FILE, ALERT_CONFIG_FILE
from utils import log_message


def load_full_config():
    """加载完整配置（合并项目和预警配置）"""
    # 加载 projects.json 完整数据
    try:
        with open(PROJECTS_FILE, 'r', encoding='utf-8') as f:
            projects_data = json.load(f)
    except:
        projects_data = {'server': {}, 'projects': [], 'external_services': []}
    
    # 加载预警配置
    alert_config = {}
    if os.path.exists(ALERT_CONFIG_FILE):
        try:
            with open(ALERT_CONFIG_FILE, 'r', encoding='utf-8') as f:
                alert_config = json.load(f)
        except:
            pass
    
    # 合并配置
    config = {
        "version": "1.0",
        "exported_at": datetime.now().strftime('%Y-%m-%d %H:%M:%S'),
        "server": projects_data.get('server', {}),
        "projects": projects_data.get('projects', []),
        "external_services": projects_data.get('external_services', []),
        "web_settings": alert_config.get('web_settings', {}),
        "alerts": alert_config.get('thresholds', {})
    }
    return config


def save_full_config(config):
    """保存完整配置"""
    # 保存 projects 部分
    projects_data = {
        "server": config.get('server', {}),
        "projects": config.get('projects', []),
        "external_services": config.get('external_services', [])
    }
    with open(PROJECTS_FILE, 'w', encoding='utf-8') as f:
        json.dump(projects_data, f, ensure_ascii=False, indent=2)
    
    # 保存预警配置和网页设置
    alert_config = {
        "web_settings": config.get('web_settings', {}),
        "thresholds": config.get('alerts', {})
    }
    with open(ALERT_CONFIG_FILE, 'w', encoding='utf-8') as f:
        json.dump(alert_config, f, ensure_ascii=False, indent=2)
    
    return True


def register_config_routes(app):
    """注册配置管理相关路由"""
    
    @app.route('/api/config/export', methods=['GET'])
    def api_config_export():
        """导出配置文件"""
        try:
            config = load_full_config()
            return jsonify(config)
        except Exception as e:
            return jsonify({'error': str(e)}), 500
    
    @app.route('/api/config/import', methods=['POST'])
    def api_config_import():
        """导入配置文件"""
        try:
            config = request.get_json()
            if not config:
                return jsonify({'error': '无效的配置数据'}), 400
            
            # 验证配置结构
            required_keys = ['server', 'projects']
            for key in required_keys:
                if key not in config:
                    return jsonify({'error': f'缺少必要字段: {key}'}), 400
            
            # 备份当前配置
            backup_time = datetime.now().strftime('%Y%m%d_%H%M%S')
            if os.path.exists(PROJECTS_FILE):
                shutil.copy(PROJECTS_FILE, f'{PROJECTS_FILE}.bak.{backup_time}')
            if os.path.exists(ALERT_CONFIG_FILE):
                shutil.copy(ALERT_CONFIG_FILE, f'{ALERT_CONFIG_FILE}.bak.{backup_time}')
            
            # 保存新配置
            save_full_config(config)
            
            log_message(f"配置导入成功: {len(config.get('projects', []))} 个项目")
            
            return jsonify({
                'message': '配置导入成功',
                'projects_count': len(config.get('projects', [])),
                'services_count': len(config.get('external_services', []))
            })
        except Exception as e:
            return jsonify({'error': str(e)}), 500
    
    @app.route('/api/web-settings', methods=['GET'])
    def api_get_web_settings():
        """获取网页设置"""
        try:
            if os.path.exists(ALERT_CONFIG_FILE):
                with open(ALERT_CONFIG_FILE, 'r', encoding='utf-8') as f:
                    config = json.load(f)
                    web_settings = config.get('web_settings', {})
                    return jsonify(web_settings)
            return jsonify({'external_ip': '121.40.164.32', 'refresh_interval': 30})
        except Exception as e:
            return jsonify({'error': str(e)}), 500
    
    @app.route('/api/web-settings', methods=['POST'])
    def api_save_web_settings():
        """保存网页设置"""
        try:
            settings = request.get_json()
            
            # 加载现有配置
            existing_config = {}
            if os.path.exists(ALERT_CONFIG_FILE):
                try:
                    with open(ALERT_CONFIG_FILE, 'r', encoding='utf-8') as f:
                        existing_config = json.load(f)
                except:
                    pass
            
            # 更新网页设置
            existing_config['web_settings'] = settings
            
            with open(ALERT_CONFIG_FILE, 'w', encoding='utf-8') as f:
                json.dump(existing_config, f, ensure_ascii=False, indent=2)
            
            return jsonify({'message': '保存成功'})
        except Exception as e:
            return jsonify({'error': str(e)}), 500