import argparse
import datetime
import urllib.parse

import icalendar

from personal_data.util import load_csv_file

NOW = datetime.datetime.now(tz=datetime.UTC)


def parse_arguments():
    parser = argparse.ArgumentParser()
    parser.add_argument('data_folder')
    parser.add_argument('output_file')
    return parser.parse_args()


def generate_calendar(rows: list[dict]) -> icalendar.Calendar:
    max_title_parts = 2

    cal = icalendar.Calendar()
    cal.add('prodid', '-//personal_data_calendar//example.org//')
    cal.add('version', '2.0')

    for event_data in rows:

        # Select data
        possible_time_keys = [
            k for k, v in event_data.items() if isinstance(v, datetime.date)
        ]
        possible_name_keys = [k for k, v in event_data.items() if isinstance(v, str)]
        possible_image_keys = [
            k for k, v in event_data.items() if isinstance(v, urllib.parse.ParseResult)
        ]

        date = event_data[possible_time_keys[0]] if possible_time_keys else None
        image = event_data[possible_image_keys[0]] if possible_image_keys else None

        if date is None:
            continue

        title = ': '.join(event_data[k] for k in possible_name_keys[:max_title_parts])
        description = '\n\n'.join(event_data[k] for k in possible_name_keys[max_title_parts:])

        # Create event
        event = icalendar.Event()
        event.add('summary', title)
        event.add('description', description)
        event.add('dtstart', date)
        event.add('dtend', date + datetime.timedelta(minutes=30))
        event.add('created', NOW)
        event.add('dtstamp', NOW)
        if image:
            event.add('image', image.geturl())
        cal.add_component(event)
        del event

    return cal


def main():
    args = parse_arguments()

    dicts = load_csv_file(args.data_folder + '/games_played_playstation.csv')

    calendar = generate_calendar(dicts)

    with open(args.output_file, 'wb') as f:
        f.write(calendar.to_ical())


if __name__ == '__main__':
    main()