#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
企业管理接口
"""

from flask import Blueprint, request, jsonify
import logging
from datetime import datetime
from auth_utils import require_auth, require_role, AuthUtils
from database_config import get_db_manager
from log_utils import log_create, log_update, log_delete, log_error
import uuid

logger = logging.getLogger(__name__)

# 创建蓝图
enterprise_bp = Blueprint('enterprise', __name__, url_prefix='/api/enterprises')

@enterprise_bp.route('/list', methods=['GET'])
@require_auth
@require_role('admin')
def get_enterprises_list():
    """获取企业列表（平台管理员）"""
    try:
        # 获取查询参数
        page = int(request.args.get('page', 1))
        page_size = int(request.args.get('pageSize', 20))
        keyword = request.args.get('keyword', '').strip()
        status = request.args.get('status', '').strip()
        
        # 构建查询条件
        where_conditions = ["1=1"]
        params = []
        
        if keyword:
            where_conditions.append("(name LIKE %s OR short_name LIKE %s OR phone LIKE %s)")
            keyword_pattern = f"%{keyword}%"
            params.extend([keyword_pattern, keyword_pattern, keyword_pattern])
        
        if status:
            where_conditions.append("status = %s")
            params.append(status)
        
        where_clause = " AND ".join(where_conditions)
        
        # 计算偏移量
        offset = (page - 1) * page_size
        
        db_manager = get_db_manager()
        
        # 查询总数
        count_sql = f"SELECT COUNT(*) as total FROM ai_enterprises WHERE {where_clause}"
        count_result = db_manager.execute_query(count_sql, params)
        total = count_result[0]['total']
        
        # 查询企业列表
        sql = f"""
            SELECT id, enterprise_ID, name, short_name, phone, email, status,
                   users_total, products_total, articles_total, published_total,
                   created_at, updated_at
            FROM ai_enterprises 
            WHERE {where_clause}
            ORDER BY created_at DESC
            LIMIT %s OFFSET %s
        """
        params.extend([page_size, offset])
        enterprises = db_manager.execute_query(sql, params)
        
        logger.info(f"获取企业列表成功，总数: {total}")
        
        return jsonify({
            'code': 200,
            'message': 'success',
            'data': {
                'total': total,
                'list': enterprises
            },
            'timestamp': int(datetime.now().timestamp() * 1000)
        })
        
    except Exception as e:
        logger.error(f"[获取企业列表] 处理请求时发生错误: {str(e)}", exc_info=True)
        return jsonify({
            'code': 500,
            'message': '服务器内部错误',
            'data': None
        }), 500

@enterprise_bp.route('/create', methods=['POST'])
@require_auth
@require_role('admin')
def create_enterprise():
    """创建企业（平台管理员）"""
    try:
        data = request.get_json()
        if not data:
            return jsonify({
                'code': 400,
                'message': '请求参数错误',
                'data': None
            }), 400
        
        # 验证必需字段
        required_fields = ['name', 'short_name', 'phone', 'password']
        for field in required_fields:
            if not data.get(field):
                return jsonify({
                    'code': 400,
                    'message': f'缺少必需字段: {field}',
                    'data': None
                }), 400
        
        # 检查手机号是否已存在
        db_manager = get_db_manager()
        check_sql = "SELECT id FROM ai_enterprises WHERE phone = %s"
        existing = db_manager.execute_query(check_sql, (data['phone'],))
        
        if existing:
            return jsonify({
                'code': 409,
                'message': '手机号已被使用',
                'data': None
            }), 409
        
        # 生成企业唯一标识
        enterprise_id = f"ENT-{datetime.now().strftime('%Y%m%d')}-{str(uuid.uuid4())[:8].upper()}"
        
        # 创建企业
        sql = """
            INSERT INTO ai_enterprises 
            (enterprise_ID, name, short_name, phone, password, email, status, 
             users_total, products_total, articles_total, published_total)
            VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)
        """
        from auth_utils import AuthUtils
        hashed_password = AuthUtils.hash_password(data['password'])
        id = db_manager.execute_insert(sql, (
            enterprise_id,
            data['name'],
            data['short_name'],
            data['phone'],
            hashed_password,
            data.get('email', ''),
            'active',
            0, 0, 0, 0
        ))
        
        logger.info(f"创建企业成功: {data['name']}, ID: {enterprise_id}")
        
        # 记录业务日志
        log_create(
            target_type='enterprise',
            target_id=id,
            description=f"创建企业: {data['name']}",
            request_data=data,
            response_data={'id': id, 'enterprise_ID': enterprise_id}
        )
        
        return jsonify({
            'code': 200,
            'message': '创建成功',
            'data': {
                'id': id,
                'enterprise_ID': enterprise_id,
                'name': data['name']
            },
            'timestamp': int(datetime.now().timestamp() * 1000)
        })
        
    except Exception as e:
        logger.error(f"[创建企业] 处理请求时发生错误: {str(e)}", exc_info=True)
        return jsonify({
            'code': 500,
            'message': '服务器内部错误',
            'data': None
        }), 500

@enterprise_bp.route('/<int:enterprise_id>', methods=['PUT'])
@require_auth
@require_role('admin')
def update_enterprise(enterprise_id):
    """更新企业信息（平台管理员）"""
    try:
        data = request.get_json()
        if not data:
            return jsonify({
                'code': 400,
                'message': '请求参数错误',
                'data': None
            }), 400
        
        # 检查企业是否存在
        db_manager = get_db_manager()
        check_sql = "SELECT id FROM ai_enterprises WHERE id = %s"
        existing = db_manager.execute_query(check_sql, (enterprise_id,))
        
        if not existing:
            return jsonify({
                'code': 404,
                'message': '企业不存在',
                'data': None
            }), 404
        
        # 构建更新字段
        update_fields = []
        params = []
        
        if 'name' in data:
            update_fields.append("name = %s")
            params.append(data['name'])
        
        if 'short_name' in data:
            update_fields.append("short_name = %s")
            params.append(data['short_name'])
        
        if 'email' in data:
            update_fields.append("email = %s")
            params.append(data['email'])
        
        if 'password' in data:
            from auth_utils import AuthUtils
            update_fields.append("password = %s")
            params.append(AuthUtils.hash_password(data['password']))
        
        if not update_fields:
            return jsonify({
                'code': 400,
                'message': '没有要更新的字段',
                'data': None
            }), 400
        
        # 执行更新
        params.append(enterprise_id)
        sql = f"UPDATE ai_enterprises SET {', '.join(update_fields)}, updated_at = NOW() WHERE id = %s"
        db_manager.execute_update(sql, params)
        
        logger.info(f"更新企业成功: ID {enterprise_id}")
        
        # 记录业务日志
        log_update(
            target_type='enterprise',
            target_id=enterprise_id,
            description=f"更新企业信息",
            request_data=data
        )
        
        return jsonify({
            'code': 200,
            'message': '更新成功',
            'data': None,
            'timestamp': int(datetime.now().timestamp() * 1000)
        })
        
    except Exception as e:
        logger.error(f"[更新企业] 处理请求时发生错误: {str(e)}", exc_info=True)
        return jsonify({
            'code': 500,
            'message': '服务器内部错误',
            'data': None
        }), 500

@enterprise_bp.route('/<int:enterprise_id>/status', methods=['PUT'])
@require_auth
@require_role('admin')
def toggle_enterprise_status(enterprise_id):
    """切换企业状态（平台管理员）"""
    try:
        data = request.get_json()
        if not data or 'status' not in data:
            return jsonify({
                'code': 400,
                'message': '缺少status参数',
                'data': None
            }), 400
        
        status = data['status']
        if status not in ['active', 'disabled']:
            return jsonify({
                'code': 400,
                'message': '状态值无效',
                'data': None
            }), 400
        
        db_manager = get_db_manager()
        sql = "UPDATE ai_enterprises SET status = %s, updated_at = NOW() WHERE id = %s"
        affected = db_manager.execute_update(sql, (status, enterprise_id))
        
        if affected == 0:
            return jsonify({
                'code': 404,
                'message': '企业不存在',
                'data': None
            }), 404
        
        logger.info(f"切换企业状态成功: ID {enterprise_id}, 状态: {status}")
        
        # 记录业务日志
        log_update(
            target_type='enterprise',
            target_id=enterprise_id,
            description=f"切换企业状态: {status}",
            request_data=data
        )
        
        return jsonify({
            'code': 200,
            'message': '操作成功',
            'data': None,
            'timestamp': int(datetime.now().timestamp() * 1000)
        })
        
    except Exception as e:
        logger.error(f"[切换企业状态] 处理请求时发生错误: {str(e)}", exc_info=True)
        return jsonify({
            'code': 500,
            'message': '服务器内部错误',
            'data': None
        }), 500

@enterprise_bp.route('/<int:enterprise_id>', methods=['DELETE'])
@require_auth
@require_role('admin')
def delete_enterprise(enterprise_id):
    """删除企业（平台管理员）"""
    try:
        db_manager = get_db_manager()
        
        # 检查企业是否存在
        check_sql = "SELECT id, name FROM ai_enterprises WHERE id = %s"
        existing = db_manager.execute_query(check_sql, (enterprise_id,))
        
        if not existing:
            return jsonify({
                'code': 404,
                'message': '企业不存在',
                'data': None
            }), 404
        
        # 物理删除企业（API文档要求）
        sql = "DELETE FROM ai_enterprises WHERE id = %s"
        db_manager.execute_update(sql, (enterprise_id,))
        
        logger.info(f"删除企业成功: {existing[0]['name']}")
        
        # 记录业务日志
        log_delete(
            target_type='enterprise',
            target_id=enterprise_id,
            description=f"删除企业: {existing[0]['name']}"
        )
        
        return jsonify({
            'code': 200,
            'message': '删除成功',
            'data': None,
            'timestamp': int(datetime.now().timestamp() * 1000)
        })
        
    except Exception as e:
        logger.error(f"[删除企业] 处理请求时发生错误: {str(e)}", exc_info=True)
        return jsonify({
            'code': 500,
            'message': '服务器内部错误',
            'data': None
        }), 500

@enterprise_bp.route('/stats', methods=['GET'])
@require_auth
@require_role('admin')
def get_enterprises_stats():
    """获取企业统计（平台管理员）"""
    try:
        db_manager = get_db_manager()
        
        sql = """
            SELECT 
                COUNT(*) as total_count,
                SUM(CASE WHEN status = 'active' THEN 1 ELSE 0 END) as active_count,
                SUM(CASE WHEN status = 'disabled' THEN 1 ELSE 0 END) as disabled_count,
                SUM(users_total) as total_users,
                SUM(products_total) as total_products,
                SUM(articles_total) as total_articles,
                SUM(published_total) as total_published
            FROM ai_enterprises
            WHERE status != 'deleted'
        """
        result = db_manager.execute_query(sql)
        stats = result[0] if result else {}
        
        logger.info("获取企业统计成功")
        
        return jsonify({
            'code': 200,
            'message': 'success',
            'data': stats,
            'timestamp': int(datetime.now().timestamp() * 1000)
        })
        
    except Exception as e:
        logger.error(f"[获取企业统计] 处理请求时发生错误: {str(e)}", exc_info=True)
        return jsonify({
            'code': 500,
            'message': '服务器内部错误',
            'data': None
        }), 500

# 企业管理员接口
@enterprise_bp.route('/info', methods=['GET'])
@require_auth
@require_role('enterprise_admin')
def get_enterprise_info():
    """获取企业信息（企业管理员）"""
    try:
        current_user = AuthUtils.get_current_user()
        enterprise_id = current_user.get('enterprise_id')
        
        if not enterprise_id:
            return jsonify({
                'code': 400,
                'message': '无法获取企业ID',
                'data': None
            }), 400
        
        db_manager = get_db_manager()
        sql = """
            SELECT id, enterprise_ID, name, short_name, phone, email, status,
                   users_total, products_total, articles_total, published_total,
                   created_at, updated_at
            FROM ai_enterprises 
            WHERE id = %s
        """
        result = db_manager.execute_query(sql, (enterprise_id,))
        
        if not result:
            return jsonify({
                'code': 404,
                'message': '企业不存在',
                'data': None
            }), 404
        
        logger.info(f"获取企业信息成功: ID {enterprise_id}")
        
        return jsonify({
            'code': 200,
            'message': 'success',
            'data': result[0],
            'timestamp': int(datetime.now().timestamp() * 1000)
        })
        
    except Exception as e:
        logger.error(f"[获取企业信息] 处理请求时发生错误: {str(e)}", exc_info=True)
        return jsonify({
            'code': 500,
            'message': '服务器内部错误',
            'data': None
        }), 500

@enterprise_bp.route('/info', methods=['PUT'])
@require_auth
@require_role('enterprise_admin')
def update_enterprise_info():
    """更新企业信息（企业管理员）"""
    try:
        current_user = AuthUtils.get_current_user()
        enterprise_id = current_user.get('enterprise_id')
        
        if not enterprise_id:
            return jsonify({
                'code': 400,
                'message': '无法获取企业ID',
                'data': None
            }), 400
        
        data = request.get_json()
        if not data:
            return jsonify({
                'code': 400,
                'message': '请求参数错误',
                'data': None
            }), 400
        
        # 构建更新字段（企业管理员只能更新部分字段）
        update_fields = []
        params = []
        
        if 'short_name' in data:
            update_fields.append("short_name = %s")
            params.append(data['short_name'])
        
        if 'email' in data:
            update_fields.append("email = %s")
            params.append(data['email'])
        
        if not update_fields:
            return jsonify({
                'code': 400,
                'message': '没有要更新的字段',
                'data': None
            }), 400
        
        db_manager = get_db_manager()
        params.append(enterprise_id)
        sql = f"UPDATE ai_enterprises SET {', '.join(update_fields)}, updated_at = NOW() WHERE id = %s"
        db_manager.execute_update(sql, params)
        
        logger.info(f"企业管理员更新企业信息成功: ID {enterprise_id}")
        
        # 记录业务日志
        log_update(
            target_type='enterprise',
            target_id=enterprise_id,
            description=f"更新企业信息（企业管理员）",
            request_data=data
        )
        
        return jsonify({
            'code': 200,
            'message': '更新成功',
            'data': None,
            'timestamp': int(datetime.now().timestamp() * 1000)
        })
        
    except Exception as e:
        logger.error(f"[更新企业信息] 处理请求时发生错误: {str(e)}", exc_info=True)
        return jsonify({
            'code': 500,
            'message': '服务器内部错误',
            'data': None
        }), 500

@enterprise_bp.route('/change-password', methods=['PUT'])
@require_auth
@require_role('enterprise_admin')
def change_password():
    """修改企业密码（企业管理员）"""
    try:
        current_user = AuthUtils.get_current_user()
        enterprise_id = current_user.get('enterprise_id')
        
        if not enterprise_id:
            return jsonify({
                'code': 400,
                'message': '无法获取企业ID',
                'data': None
            }), 400
        
        data = request.get_json()
        if not data:
            return jsonify({
                'code': 400,
                'message': '请求参数错误',
                'data': None
            }), 400
        
        old_password = data.get('old_password')
        new_password = data.get('new_password')
        
        if not old_password or not new_password:
            return jsonify({
                'code': 400,
                'message': '旧密码和新密码不能为空',
                'data': None
            }), 400
        
        # 获取当前密码
        db_manager = get_db_manager()
        sql = "SELECT password FROM ai_enterprises WHERE id = %s"
        result = db_manager.execute_query(sql, (enterprise_id,))
        
        if not result:
            return jsonify({
                'code': 404,
                'message': '企业不存在',
                'data': None
            }), 404
        
        current_password = result[0]['password']
        
        # 验证旧密码
        if not AuthUtils.verify_password(old_password, current_password):
            logger.warning(f"企业修改密码失败 - 旧密码错误: 企业ID {enterprise_id}")
            return jsonify({
                'code': 401,
                'message': '旧密码错误',
                'data': None
            }), 401
        
        # 更新密码
        hashed_new_password = AuthUtils.hash_password(new_password)
        update_sql = "UPDATE ai_enterprises SET password = %s, updated_at = NOW() WHERE id = %s"
        db_manager.execute_update(update_sql, (hashed_new_password, enterprise_id))
        
        logger.info(f"企业修改密码成功: ID {enterprise_id}")
        
        # 记录业务日志
        log_update(
            target_type='enterprise',
            target_id=enterprise_id,
            description=f"修改企业密码",
            request_data={'old_password': '***', 'new_password': '***'}  # 隐藏密码
        )
        
        return jsonify({
            'code': 200,
            'message': '密码修改成功',
            'data': None,
            'timestamp': int(datetime.now().timestamp() * 1000)
        })
        
    except Exception as e:
        logger.error(f"[修改密码] 处理请求时发生错误: {str(e)}", exc_info=True)
        return jsonify({
            'code': 500,
            'message': '服务器内部错误',
            'data': None
        }), 500