#! /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



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} {2:15} {2}".format(*row))

def add_host(connection, args):
    cursor = connection.cursor()
    sql =  """
            INSERT INTO hosts
            (name, domain, address)
            VALUES (%(name)s, %(domain)s, %(address)s)
            """
            # oder mit .format(**args) {name} usw
    cursor.execute(sql,args)
    connection.commit()

def db_insert_into(connection, table, data):
    columns = []
    values = []
    for col in data.keys():
        col = col.replace("'", '')
        columns.append(col)
        values.append('%('+col+')s')
    sql =   """
            INSERT INTO {table}
            ({columns})
            VALUES ({placeholder})
            """.format(
                table=table, 
                columns=','.join(columns), 
                placeholder=','.join(values),
                )
    print(sql)

    with connection as cursor:
        cursor.execute(sql, data)




#Connection
def main():
    credentials = dict(
    host = 'notebook14', 
    user = 'python',
    password = 'villa',
    database = 'inventory'
)   
    db = db_connect(credentials)
    #list_hosts(db)
    row = dict(
        name='notebook999',
        domain='linuxhotel.example',
        address='192.168.1.254',
    )
    db_insert_into(db, 'hosts', row )
    db.close()


hide_exception(main)