import sys,csv
import mysql.connector

def main():

    connection = mysql.connector.connect(user='root', password='123',
                              host='127.0.0.1',
                              database='biblioteca_fc')

    file = open(sys.argv[1],"r")
    lines = csv.reader(file)
    
    #Get name and order of columns
    columns = next(lines)

    #Replace empty values with null
    values = [[value if value else None for value in line] for line in lines]

    #Create placeholder strings
    placeholders = ', '.join(['%s'] * len(columns))

    #Create query
    query = f"INSERT INTO Utilizador ({', '.join(columns)}) VALUES ({placeholders})"

    #Execute query
    cursor = connection.cursor()
    cursor.executemany(query,values)
    connection.commit()

    #Close everything
    file.close()
    cursor.close()
    connection.close()

if __name__ == "__main__":
    main()