import argparse
import datetime
import unicodecsv as csv

import meetup.api
import os.path

columns = ['name', 'real_name', 'kingster', 'id', 'rsvp', 'rsvp_date', 'joined_group_date', 'title', 'host', 'url', 'new_entry']

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='Get the attendee names for a meetup.')
    parser.add_argument('--api-key', required=True)
    parser.add_argument('--meetup', required=True)
    parser.add_argument('--event-id', required=True)
    parser.add_argument('--csv-file', required=True)

    args = parser.parse_args()

    attendees_list = []

    if os.path.exists(args.csv_file):
        with open(args.csv_file, 'rb') as csvfile:
            reader = csv.DictReader(csvfile)
            for row in reader:
                attendees_list.append(row)

    attendees = {}

    for attendee in attendees_list:
        id = str(attendee.pop('id'))
        attendees[id] = attendee

    client = meetup.api.Client(args.api_key)
    rsvps = client.GetRsvps(event_id=args.event_id, urlname=args.meetup)

    for rsvp in rsvps.results:
        id = str(rsvp['member']['member_id'])

        if id in attendees.keys():
            attendees[id]['new_entry'] = False
        else:
            attendees[id] = {}
            attendees[id]['new_entry'] = True

        attendees[id]['name'] = rsvp['member']['name']
        attendees[id]['rsvp'] = rsvp['response']
        attendees[id]['url'] = 'https://www.meetup.com/swedencpp/members/' + str(id)
        attendees[id]['rsvp_date'] = datetime.datetime.fromtimestamp((rsvp['created'] / 1000)).strftime('%Y-%m-%d %H:%M:%S')

    attendees_list = []

    for id, data in attendees.items():
        data['id'] = id
        attendees_list.append(data)

    attendees_list = sorted(attendees_list, key=lambda x: x['name'].lower())

    with open(args.csv_file, 'w') as csvfile:
        writer = csv.DictWriter(csvfile, fieldnames=columns)
        writer.writeheader()

        for attendee in attendees_list:
            writer.writerow(attendee)