wwdc.rb

# sudo gem install json icalendar

require 'rubygems'
require 'open-uri'
require 'json'
require 'icalendar'

# sessions_data = JSON.parse(open("http://developer.apple.com/wwdc/data/sessions.json").read)["SessionsData"]

sessions_raw = '[{
  "title": "Apple Keynote",
  "description": "The Apple Worldwide Developers Conference kicks off with exciting reveals, inspiration, and new opportunities. Join the worldwide developer community for an in-depth look at the future of Apple platforms, directly from Apple Park.",
  "time_start": "June 6, 10 a.m.",
  "time_end": "June 6, 0 p.m."
},{
  "title": "Platforms State of the Union",
  "description": "The Apple Worldwide Developers Conference kicks off with exciting reveals, inspiration, and new opportunities. Join the worldwide developer community for an in-depth look at the future of Apple platforms, directly from Apple Park.",
  "time_start": "June 6, 1 p.m.",
  "time_end": "June 6, 3 p.m."
}]'

sessions_data = JSON.parse(sessions_raw)


calendar = Icalendar::Calendar.new

tzid = "America/Los_Angeles"

calendar.timezone do |t|
  t.tzid = tzid
end


sessions_data.each do |session|
  puts session[:time]
  calendar.event do |e|
    e.dtstart     = Icalendar::Values::DateTime.new DateTime.parse(session["time_start"]), 'tzid' => tzid
    e.dtend       = Icalendar::Values::DateTime.new DateTime.parse(session["time_end"]), 'tzid' => tzid
    e.summary     = session["title"] + " [WWDC 2022]"
    e.description = session["description"]
    e.url         = session["url"] || "https://developer.apple.com/wwdc22/"

    e.alarm do |a|
      a.action  = "DISPLAY" # This line isn't necessary, it's the default
      a.summary = "15 min before the event"
      a.trigger = "-PT15M" # 15 minutes before
    end
  
  end
end

puts calendar.to_ical

File.open('WWDC.ics', 'w') { |file| file.write(calendar.to_ical) }