#!/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, format_datetime_fields
from log_utils import log_create, log_update, log_delete, log_error
import uuid

logger = logging.getLogger('article_server')

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

@enterprise_bp.route('/list', methods=['GET'])
@require_auth
@require_role('admin', 'enterprise')
def get_enterprises_list():
    """获取企业列表（平台管理员）"""
    client_ip = request.environ.get('HTTP_X_FORWARDED_FOR', request.environ.get('REMOTE_ADDR', '未知'))
    logger.info(f"[获取企业列表] 开始处理请求, IP: {client_ip}")
    
    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()
        
        logger.info(f"[获取企业列表] 查询参数: page={page}, pageSize={page_size}, keyword={keyword}, status={status}, IP: {client_ip}")
        
        # 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, 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)
        
        # 为每个企业查询管理员手机号（从ai_users表）
        for enterprise in enterprises:
            phone_sql = """
                SELECT phone
                FROM ai_users
                WHERE enterprise_id = %s AND role = 'enterprise' AND is_enterprise = 1 AND status = 'active'
                LIMIT 1
            """
            phone_result = db_manager.execute_query(phone_sql, (enterprise['id'],))
            enterprise['phone'] = phone_result[0]['phone'] if phone_result and phone_result[0].get('phone') else ''
        
        # 格式化日期时间字段
        enterprises = format_datetime_fields(enterprises)
        
        logger.info(f"[获取企业列表] 查询成功, 总数: {total}, 当前页: {page}, 每页: {page_size}, 返回数量: {len(enterprises)}, IP: {client_ip}")
        
        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', 'enterprise')
def create_enterprise():
    """创建企业（平台管理员）"""
    client_ip = request.environ.get('HTTP_X_FORWARDED_FOR', request.environ.get('REMOTE_ADDR', '未知'))
    logger.info(f"[创建企业] 开始处理创建企业请求, IP: {client_ip}")
    
    try:
        data = request.get_json()
        if not data:
            logger.warning(f"[创建企业] 请求参数为空, IP: {client_ip}")
            return jsonify({
                'code': 400,
                'message': '请求参数错误',
                'data': None
            }), 400
        
        logger.info(f"[创建企业] 收到创建请求, 企业名称: {data.get('name')}, 简称: {data.get('short_name')}, 手机号: {data.get('phone')}, IP: {client_ip}")
        
        # 验证必需字段
        required_fields = ['name', 'short_name', 'phone', 'password']
        for field in required_fields:
            if not data.get(field):
                logger.warning(f"[创建企业] 缺少必需字段: {field}, IP: {client_ip}")
                return jsonify({
                    'code': 400,
                    'message': f'缺少必需字段: {field}',
                    'data': None
                }), 400
        
        db_manager = get_db_manager()
        
        # ✅ 检查手机号是否已存在（ai_users表中role='enterprise'的记录）
        logger.info(f"[创建企业] 检查ai_users表中企业角色手机号是否已存在: {data['phone']}")
        check_user_sql = "SELECT id FROM ai_users WHERE phone = %s AND role = 'enterprise' AND is_enterprise = 1"
        existing_user = db_manager.execute_query(check_user_sql, (data['phone'],))
        
        if existing_user:
            logger.warning(f"[创建企业] ai_users表中企业角色手机号已存在: {data['phone']}, IP: {client_ip}")
            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_str = f"ENT-{datetime.now().strftime('%Y%m%d')}-{str(uuid.uuid4())[:8].upper()}"
        logger.info(f"[创建企业] 生成企业ID: {enterprise_id_str}, 企业名称: {data['name']}")
        
        # 加密密码
        from auth_utils import AuthUtils
        hashed_password = AuthUtils.hash_password(data['password'])
        
        # ✅ （1）创建企业（ai_enterprises表）
        logger.info(f"[创建企业] 开始插入ai_enterprises表, 企业ID: {enterprise_id_str}, 名称: {data['name']}")
        enterprise_sql = """
            INSERT INTO ai_enterprises 
            (enterprise_ID, name, short_name, icon, email, website, address, status, 
             users_total, products_total, published_total, articles_total, released_month_total, linked_to_xhs_num)
            VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)
        """
        
        enterprise_db_id = db_manager.execute_insert(enterprise_sql, (
            enterprise_id_str,
            data['name'],
            data['short_name'],
            data.get('icon', ''), 
            data.get('email', ''),
            data.get('website', ''),
            data.get('address', ''),
            'active',
            0, 0, 0, 0, 0, 0
        ))
        
        logger.info(f"[创建企业] ai_enterprises表插入成功, 数据库ID: {enterprise_db_id}, 企业ID: {enterprise_id_str}")
        
        # ✅ （2）创建企业管理员用户（ai_users表）
        logger.info(f"[创建企业] 开始创建企业管理员用户, 手机号: {data['phone']}, 角色: enterprise")
        
        # 用户名使用手机号
        username = data['phone']
        
        # 检查用户名是否已存在
        check_username_sql = "SELECT id FROM ai_users WHERE username = %s"
        existing_username = db_manager.execute_query(check_username_sql, (username,))
        
        if existing_username:
            logger.warning(f"[创建企业] 用户名已存在: {username}, IP: {client_ip}")
            return jsonify({
                'code': 409,
                'message': '用户名已被使用',
                'data': None
            }), 409
        
        user_sql = """
            INSERT INTO ai_users 
            (enterprise_id, enterprise_name, username, password, real_name, email, phone, 
             department, role, status, is_enterprise)
            VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)
        """
        
        user_db_id = db_manager.execute_insert(user_sql, (
            enterprise_db_id,           # enterprise_id
            data['name'],                # enterprise_name
            username,                    # username (使用手机号)
            hashed_password,             # password (使用传入的密码)
            data.get('real_name', data['short_name']),  # real_name
            data.get('email', ''),       # email
            data['phone'],               # phone
            data.get('department', ''),  # department
            'enterprise',                # role (✅ 角色为enterprise)
            'active',                     # status
			1
        ))
        
        logger.info(f"[创建企业] ai_users表插入成功, 用户ID: {user_db_id}, 用户名: {username}, 角色: enterprise")
        
        logger.info(f"[创建企业] 企业创建成功, 企业DB_ID: {enterprise_db_id}, 企业ID: {enterprise_id_str}, 名称: {data['name']}, 管理员用户ID: {user_db_id}, IP: {client_ip}")
        
        # 记录业务日志
        log_create(
            target_type='enterprise',
            target_id=enterprise_db_id,
            description=f"创建企业: {data['name']}, 同时创建企业管理员用户",
            request_data={**data, 'password': '***'},  # 隐藏密码
            response_data={'enterprise_id': enterprise_db_id, 'enterprise_ID': enterprise_id_str, 'user_id': user_db_id}
        )
        
        return jsonify({
            'code': 200,
            'message': '创建成功',
            'data': {
                'id': enterprise_db_id,
                'enterprise_ID': enterprise_id_str,
                'name': data['name'],
                'user_id': user_db_id,
                'username': username
            },
            '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', 'enterprise')
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
        enterprise_update_fields = []
        enterprise_params = []
        user_password = None
        
        if 'name' in data:
            enterprise_update_fields.append("name = %s")
            enterprise_params.append(data['name'])
        
        if 'short_name' in data:
            enterprise_update_fields.append("short_name = %s")
            enterprise_params.append(data['short_name'])
        
        if 'email' in data:
            enterprise_update_fields.append("email = %s")
            enterprise_params.append(data['email'])
        
        if 'password' in data:
            from auth_utils import AuthUtils
            user_password = AuthUtils.hash_password(data['password'])
        
        if not enterprise_update_fields and not user_password:
            return jsonify({
                'code': 400,
                'message': '没有要更新的字段',
                'data': None
            }), 400
        
        # 执行更新企业表
        if enterprise_update_fields:
            enterprise_params.append(enterprise_id)
            sql = f"UPDATE ai_enterprises SET {', '.join(enterprise_update_fields)}, updated_at = NOW() WHERE id = %s"
            db_manager.execute_update(sql, enterprise_params)
        
        # 如果有密码更新，更新ai_users表中的企业管理员密码
        if user_password:
            user_update_sql = "UPDATE ai_users SET password = %s, updated_at = NOW() WHERE enterprise_id = %s AND role = 'enterprise'"
            db_manager.execute_update(user_update_sql, (user_password, enterprise_id))
        
        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', 'enterprise')
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', 'enterprise')
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', 'enterprise')
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('admin','editor','reviewer','publisher','each_title_reviewer','enterprise')
def get_enterprise_info():
    """获取企业信息（企业管理员，包含密码字段）"""
    try:
        current_user = AuthUtils.get_current_user()
        enterprise_id = current_user.get('enterprise_id')
        user_id = current_user.get('user_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()
        
        # 查询企业信息
        enterprise_sql = """
            SELECT id, enterprise_ID, name, short_name, email, status,
                   users_total, products_total, articles_total, published_total,
                   created_at, updated_at
            FROM ai_enterprises 
            WHERE id = %s
        """
        enterprise_result = db_manager.execute_query(enterprise_sql, (enterprise_id,))
        
        if not enterprise_result:
            return jsonify({
                'code': 404,
                'message': '企业不存在',
                'data': None
            }), 404
        
        # 格式化日期时间字段
        enterprise_info = format_datetime_fields(enterprise_result[0])
        
        # 查询企业管理员的手机号（从ai_users表）
        user_sql = """
            SELECT phone
            FROM ai_users
            WHERE enterprise_id = %s AND role = 'enterprise' AND is_enterprise = 1 AND status = 'active'
            LIMIT 1
        """
        user_result = db_manager.execute_query(user_sql, (enterprise_id,))
        
        # 添加phone字段到企业信息中
        if user_result and user_result[0].get('phone'):
            enterprise_info['phone'] = user_result[0]['phone']
        else:
            enterprise_info['phone'] = ''  
        
        logger.info(f"获取企业信息成功（含密码）: ID {enterprise_id}")
        
        return jsonify({
            'code': 200,
            'message': 'success',
            'data': enterprise_info,
            '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')
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（从ai_users表查询企业管理员账号）
        db_manager = get_db_manager()
        user_id = current_user.get('user_id')
        sql = "SELECT password FROM ai_users WHERE id = %s AND role = 'enterprise'"
        result = db_manager.execute_query(sql, (user_id,))
        
        if not result:
            return jsonify({
                'code': 404,
                'message': '用户不存在',
                '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（更新ai_users表中的企业管理员密码）
        hashed_new_password = AuthUtils.hash_password(new_password)
        update_sql = "UPDATE ai_users SET password = %s, updated_at = NOW() WHERE id = %s AND role = 'enterprise'"
        db_manager.execute_update(update_sql, (hashed_new_password, user_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