from flask import request, jsonify, current_app
from app import db
from app.models import AuditLog
from . import api_bp
from .decorators import require_admin
from datetime import datetime, timedelta
import os

@api_bp.route('/logs', methods=['GET'])
@require_admin
def get_logs():
    """获取操作日志列表"""
    try:
        page = request.args.get('page', 1, type=int)
        per_page = min(request.args.get('per_page', 20, type=int), 100)
        action = request.args.get('action')
        target_type = request.args.get('target_type')
        admin_id = request.args.get('admin_id', type=int)
        start_date = request.args.get('start_date')
        end_date = request.args.get('end_date')
        
        query = AuditLog.query
        
        # 添加筛选条件
        if action:
            query = query.filter(AuditLog.action == action)
        if target_type:
            query = query.filter(AuditLog.target_type == target_type)
        if admin_id:
            query = query.filter(AuditLog.admin_id == admin_id)
        if start_date:
            start_datetime = datetime.strptime(start_date, '%Y-%m-%d')
            query = query.filter(AuditLog.create_time >= start_datetime)
        if end_date:
            end_datetime = datetime.strptime(end_date, '%Y-%m-%d') + timedelta(days=1)
            query = query.filter(AuditLog.create_time < end_datetime)
        
        # 按时间倒序排列
        query = query.order_by(AuditLog.create_time.desc())
        
        # 分页
        pagination = query.paginate(page=page, per_page=per_page, error_out=False)
        
        logs = [log.to_dict() for log in pagination.items]
        
        return jsonify({
            'success': True,
            'data': {
                'logs': logs,
                'pagination': {
                    'page': page,
                    'per_page': per_page,
                    'total': pagination.total,
                    'pages': pagination.pages,
                    'has_prev': pagination.has_prev,
                    'has_next': pagination.has_next
                }
            }
        })
    except Exception as e:
        current_app.logger.error(f"获取操作日志列表失败: {str(e)}")
        return jsonify({'success': False, 'message': '服务器内部错误'}), 500

@api_bp.route('/logs/actions', methods=['GET'])
@require_admin
def get_log_actions():
    """获取所有操作类型"""
    try:
        actions = db.session.query(AuditLog.action).distinct().all()
        action_list = [action[0] for action in actions]
        return jsonify({
            'success': True,
            'data': {
                'actions': action_list
            }
        })
    except Exception as e:
        current_app.logger.error(f"获取操作类型列表失败: {str(e)}")
        return jsonify({'success': False, 'message': '服务器内部错误'}), 500

@api_bp.route('/logs/file', methods=['GET'])
@require_admin
def get_log_file():
    """获取系统日志文件内容"""
    try:
        log_file_path = 'logs/kamaxitong.log'
        
        # 检查日志文件是否存在
        if not os.path.exists(log_file_path):
            return jsonify({
                'success': False,
                'message': '日志文件不存在'
            }), 404
        
        # 读取日志文件内容
        with open(log_file_path, 'r', encoding='utf-8') as f:
            # 读取最后1000行日志
            lines = f.readlines()[-1000:]
            log_content = ''.join(lines)
        
        return jsonify({
            'success': True,
            'data': {
                'content': log_content
            }
        })
    except Exception as e:
        current_app.logger.error(f"读取日志文件失败: {str(e)}")
        return jsonify({'success': False, 'message': '服务器内部错误'}), 500