#!/usr/bin/env python3
# -*- coding: UTF-8 -*-
'''
@Project :domainScanDemo
@File    :add_backlink_count_column.py
@IDE     :PyCharm
@Author  :梦伴
@Date    :2026/4/10 03:50
@explain : 为domains表添加backlink_count字段
'''

import psycopg2
from app.config import config


def add_backlink_count_column():
    """
    为domains表添加backlink_count字段
    """
    try:
        # 连接数据库
        conn = psycopg2.connect(
            host=config.DB_HOST,
            port=config.DB_PORT,
            database=config.DB_DATABASE,
            user=config.DB_USER,
            password=config.DB_PASSWORD
        )
        print(f"成功连接到数据库: {config.DB_HOST}:{config.DB_PORT}/{config.DB_DATABASE}")
        
        # 创建游标
        cur = conn.cursor()
        
        # 添加backlink_count字段
        add_column_sql = """
        ALTER TABLE domains ADD COLUMN IF NOT EXISTS backlink_count INTEGER DEFAULT 0
        """
        cur.execute(add_column_sql)
        print("添加backlink_count字段成功")
        
        # 添加字段注释
        add_comment_sql = """
        COMMENT ON COLUMN domains.backlink_count IS '友情链接数量'
        """
        cur.execute(add_comment_sql)
        print("添加字段注释成功")
        
        # 创建索引
        create_index_sql = """
        CREATE INDEX IF NOT EXISTS idx_domains_backlink_count ON domains(backlink_count)
        """
        cur.execute(create_index_sql)
        print("创建索引成功")
        
        # 提交事务
        conn.commit()
        print("事务提交成功")
        
        # 关闭游标和连接
        cur.close()
        conn.close()
        print("连接关闭成功")
        
        return True
    except Exception as e:
        print(f"添加backlink_count字段失败: {e}")
        return False


if __name__ == "__main__":
    print("开始为domains表添加backlink_count字段...")
    success = add_backlink_count_column()
    if success:
        print("backlink_count字段添加成功！")
    else:
        print("backlink_count字段添加失败！")