import argparse
import sqlite3
from tabulate import tabulate

def parse_args():
    """
    Parses the arguments from the CLI
    """
    parser = argparse.ArgumentParser(description="Testtool Adress Changes")
    parser.add_argument(
            '-c', '--create', 
            help='Creates an example database',
            action='store_true'
            )
    parser.add_argument(
            '-i', '--insert',
            help='insert some example data',
            action='store_true'
            )
    parser.add_argument(
            '-p', '--print',
            choices=['table', 'string'],
            default='table',
            help='prints all the cells from the table',
            )
    parser.add_argument(
            '-u', '--update',
            action='store_true',
            help='Updates the city names'
            )

    return parser.parse_args()


def execute_sql(args):
    db = sqlite3.connect("test.db")
    cur = db.cursor()
    print(args.print)
    if args.create:
        print("Creating")
        with open ('sql/create_db.sql', 'r') as sql_file:
                cur.executescript(sql_file.read())
    elif args.insert:
        print("insert")
        with open ('sql/insert_data.sql', 'r') as sql_file:
                cur.executescript(sql_file.read())
    elif args.update:
        print("Updating database")
        with open ('sql/update_sg.sql', 'r') as sql_file:
                cur.executescript(sql_file.read())

    elif args.print:
        cur.execute("SELECT * from customers")
        if args.print == 'table':
            print(tabulate(cur.fetchall()))
        else:
            print(cur.fetchall())
    db.commit()
    db.close()



def main():
    args = parse_args()
    execute_sql(args)


if __name__ == '__main__':
    main()