#! /usr/bin/env python3
#
#Benötigt python3-pymysql
# mysql -h notebook14 -u python -pvilla inventory
import sys
import pymysql

from utilities import hide_exception

def db_connect(credentials: dict):
    connection = pymysql.connect(**credentials)
    return connection

# Passwort aus Konfigiruationsdaten lesen
credentials = dict(
    host = 'notebook14', 
    user = 'python',
    password = 'villa',
    database = 'inventory'
)


def list_hosts(connection):
    cursor = connection.cursor()
    sql =   """
            SELECT name, domain, address 
            FROM hosts 
            ORDER BY name
            """
    cursor.execute(sql)
    #ermittlung cursor.fetchone() eine Zeile cursor.fetchmany() gibt vile in einer Zeile 
    # cursor ist Iterator
    #test = [row for row in cursor]
    for row in cursor:
        print("{0:20} {2:23} {1:15}".format(*row))


#Connection
def main():
    db = db_connect(credentials)
    list_hosts(db)
    db.close()


hide_exception(main)