This tool should do the following:

• fetch the calendar from Sportpark
• track fixtures
• organize tournaments
• create ranking
• show statistics

Fetching the calendar: fetch("http://www.gesundheitspark.ch/kalender/parser.php?type=3&start=1512082800&end=1512687600")

• type: 1=Badminton, 2=Squash, 3=Tennis indoors, 4=Tennis outdoors
• start and end: ES dates.
• returns json object with all booked courts
• structure:
  • { id: 392, start: "2017-12-07T16:00:00", end: "2017-12-07T17:00:00", title: "
    16:00
    bis<br/…", userId: 2 }
  • userId is the court number