import sqlite3
import mysql.connector
import tqdm
import os

TABLE_NAME = 'mp_synthesis_papers_info'
input('TABLE_NAME = {} ?'.format(TABLE_NAME))

cur_dir = os.path.dirname(os.path.abspath(__file__))

# MySQL connection setup
mysql_connection = mysql.connector.connect(
    host='100.84.94.73',
    user='metadata_mat_papers',
    password='siat-mic',
    database='metadata_mat_papers'
)

try:
    mysql_cursor = mysql_connection.cursor()
    
    # 编写query语句
    # query = f"SELECT pdf_url FROM {TABLE_NAME} WHERE scihub_downlowded IN ('broken', 'timeout', 'failed') and pdf_url IS NOT NULL;"
    query = f"SELECT pdf_url FROM {TABLE_NAME} WHERE scihub_downlowded IS NULL AND pdf_url IS NOT NULL;"
    mysql_cursor.execute(query)
    records = mysql_cursor.fetchall()

    for record in tqdm.tqdm(records):
        # pdf_path = os.path.join(cur_dir, record[0])
        # if os.path.exists(pdf_path):
            # os.remove(pdf_path)
        query = f"UPDATE {TABLE_NAME} SET pdf_url = NULL WHERE pdf_url = '{record[0]}';"
        mysql_cursor.execute(query)
        mysql_connection.commit()

    # 提交更改到数据库
    mysql_connection.commit()

except mysql.connector.Error as error:
    print("Failed to insert record into MySQL table: {}".format(error))
    # 如果发生错误，撤回事务
    mysql_connection.rollback()

finally:
    # 关闭游标和连接
    mysql_cursor.close()
    mysql_connection.close()