from configparser import ConfigParser
import socket
import datetime
import os
import argparse

from re2oapi import Re2oAPIClient

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

config = ConfigParser()
config.read(path + '/config.ini')

api_hostname = config.get('Re2o', 'hostname')
api_password = config.get('Re2o', 'password')
api_username = config.get('Re2o', 'username')



fallback = config.getboolean('DEFAULT', 'activate', fallback=False)


def write_generic_members_file(ml_name, members):
    if config.getboolean(ml_name, 'activate', fallback=fallback):
        members = "\n".join(m['get_mail'] for m in members)
        filename = path + '/generated/ml.{name}.list'.format(name=ml_name)
        with open(filename, 'w+') as f:
            f.write(members)
        print("[OK] File for mailing list {} has been generated".format(ml_name))
    else:
        print("[INFO] Mailing list {} from re2o is not activated. Skipping.".format(ml_name))


def write_standard_members_files(api_client):
    for ml in api_client.list("mailing/standard"):
        write_generic_members_file(ml['name'], ml['members'])


def write_club_members_files(api_client):
    fallback = config.get('DEFAULT', 'activate', fallback=False)
    for ml in api_client.list("mailing/club"):
        write_generic_members_file(ml['name'], ml['members'])
        write_generic_members_file(ml['name']+'-admin', ml['members'])


api_client = Re2oAPIClient(api_hostname, api_username, api_password)
client_hostname = socket.gethostname().split('.', 1)[0]

if __name__ == '__main__':
    parser = argparse.ArgumentParser()
    parser.add_argument("-f", "--force", help="Force files regeneration", action="store_true")
    args = parser.parse_args()

    if not os.path.exists(os.path.dirname(path + "/generated/")):
        print("[WARN] generated directory does not exist")
        try:
            os.makedirs(os.path.dirname(path + "/generated/"))
        except Exception as e:
            print("[ERROR] Impossible to create generated directory. Error was {}".format(e))

    for service in api_client.list("services/regen/"):
        if service['hostname'] == client_hostname and service['service_name'] == 'mailing':
            if service['need_regen'] or args.force:
                print("[..] Regenerating service {}".format(service['service_name']))
                write_standard_members_files(api_client)
                write_club_members_files(api_client)
                api_client.patch(service['api_url'], data={'need_regen': False})

                ## Write that the files have changed, for other scripts
                filename = path + "/generated/changed"
                with open(filename, "w+") as f:
                    f.write("1")

                print("[OK] Service {} has been regenerated.".format(service['service_name']))
            else:
                print("[OK] No service needed regeneration")