import ICS events to calendar

Gemfile

@@ -65,3 +65,5 @@ group :test do
   gem "capybara"
   gem "selenium-webdriver"
 end
+
+gem "icalendar", "~> 2.10"

Gemfile.lock

@@ -105,6 +105,9 @@ GEM
       activesupport (>= 6.1)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
+    icalendar (2.10.1)
+      ice_cube (~> 0.16)
+    ice_cube (0.16.4)
     importmap-rails (2.0.1)
       actionpack (>= 6.0.0)
       activesupport (>= 6.0.0)
@@ -262,6 +265,7 @@ DEPENDENCIES
   bootsnap
   capybara
   debug
+  icalendar (~> 2.10)
   importmap-rails
   jbuilder
   puma (>= 5.0)

app/controllers/events_controller.rb

@@ -6,6 +6,15 @@ def index
     @events = Event.all
   end
 
+  def import
+    files = params[:ics_files].reject(&:blank?)
+    files.each do |file|
+      Event.create_from_ics(file)
+    end
+
+    redirect_to events_path, notice: "Events imported!"
+  end
+
   # GET /events/1 or /events/1.json
   def show
   end

app/models/event.rb

@@ -1,2 +1,15 @@
 class Event < ApplicationRecord
+  def self.create_from_ics(file_path)
+    file = File.open(file_path)
+    calendars = Icalendar::Calendar.parse(file)
+    event = calendars.first.events.first
+    Event.create(
+      starts_at: event.dtstart,
+      ends_at: event.dtend,
+      location: event.location,
+      summary: event.summary.strip,
+      description: event.description,
+      url: event.url
+    )
+  end
 end

app/views/events/index.html.erb

@@ -1,5 +1,10 @@
 <p style="color: green"><%= notice %></p>
 
+<%= form_with url: import_events_path, method: :post do |form| %>
+  <%= form.file_field :ics_files, multiple: true %>
+  <%= form.submit %>
+<% end %>
+
 <h1>Events</h1>
 
 <div id="events">

config/routes.rb

@@ -1,5 +1,9 @@
 Rails.application.routes.draw do
-  resources :events
+  resources :events do
+    collection do
+      post :import
+    end
+  end
   # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
 
   # Reveal health status on /up that returns 200 if the app boots with no exceptions, otherwise 500.

test/fixtures/files/Sunday+morning+yoga+in+Antibes+.ics

@@ -0,0 +1,49 @@
+BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//Meetup//RemoteApi//EN
+CALSCALE:GREGORIAN
+METHOD:PUBLISH
+X-ORIGINAL-URL:https://www.meetup.com/englishspeakingyoganiceantibes/even
+ ts/299417408/ical/Sunday+morning+yoga+in+Antibes+.ics
+X-WR-CALNAME:Events - Sunday morning yoga in Antibes .ics
+X-MS-OLK-FORCEINSPECTOROPEN:TRUE
+BEGIN:VTIMEZONE
+TZID:Europe/Paris
+TZURL:http://tzurl.org/zoneinfo-outlook/Europe/Paris
+X-LIC-LOCATION:Europe/Paris
+BEGIN:DAYLIGHT
+TZOFFSETFROM:+0100
+TZOFFSETTO:+0200
+TZNAME:CEST
+DTSTART:19700329T020000
+RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:+0200
+TZOFFSETTO:+0100
+TZNAME:CET
+DTSTART:19701025T030000
+RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
+END:STANDARD
+END:VTIMEZONE
+BEGIN:VEVENT
+DTSTAMP:20240302T205200Z
+DTSTART;TZID=Europe/Paris:20240303T103000
+DTEND;TZID=Europe/Paris:20240303T113000
+STATUS:CONFIRMED
+SUMMARY:Sunday morning yoga in Antibes 
+DESCRIPTION:English Yoga | Nice/Antibes/Monaco\nSunday\, March 3 at 10:30
+  AM\n\nJoin us for some yoga on Sunday morning in Antibes! 🌞✨Accessible
+  to all levels of experience 🙏🏻Price: 15€\n\nhttps://www.meetup.com/en
+ glishspeakingyoganiceantibes/events/299417408/
+CLASS:PUBLIC
+CREATED:20240225T133601Z
+GEO:43.70;7.26
+LOCATION:Plage de la Gravette\, Antibes (Small beach behind Port Vauban\,
+  Antibes\, France)
+URL:https://www.meetup.com/englishspeakingyoganiceantibes/events/29941740
+ 8/
+LAST-MODIFIED:20240225T133630Z
+UID:event_299417408@meetup.com
+END:VEVENT
+END:VCALENDAR

test/fixtures/files/Wednesday+5+km+or+more.ics

@@ -0,0 +1,48 @@
+BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//Meetup//RemoteApi//EN
+CALSCALE:GREGORIAN
+METHOD:PUBLISH
+X-ORIGINAL-URL:https://www.meetup.com/nice-runners/events/299443075/ical/
+ Wednesday+5+km+or+more.ics
+X-WR-CALNAME:Events - Wednesday 5 km or more.ics
+X-MS-OLK-FORCEINSPECTOROPEN:TRUE
+BEGIN:VTIMEZONE
+TZID:Europe/Paris
+TZURL:http://tzurl.org/zoneinfo-outlook/Europe/Paris
+X-LIC-LOCATION:Europe/Paris
+BEGIN:DAYLIGHT
+TZOFFSETFROM:+0100
+TZOFFSETTO:+0200
+TZNAME:CEST
+DTSTART:19700329T020000
+RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:+0200
+TZOFFSETTO:+0100
+TZNAME:CET
+DTSTART:19701025T030000
+RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
+END:STANDARD
+END:VTIMEZONE
+BEGIN:VEVENT
+DTSTAMP:20240302T205210Z
+DTSTART;TZID=Europe/Paris:20240304T193000
+DTEND;TZID=Europe/Paris:20240304T210000
+STATUS:CONFIRMED
+SUMMARY:Wednesday 5 km or more
+DESCRIPTION:Nice Runners\nMonday\, March 4 at 7:30 PM\n\nwe meet and run 
+ 5 to 10 km. in the group there are different speeds and different levels
+  of preparation and everyone makes the distance they feel. in ...\n\nhtt
+ ps://www.meetup.com/nice-runners/events/299443075/
+CLASS:PUBLIC
+CREATED:20240226T173204Z
+GEO:43.70;7.26
+LOCATION:Ma Nolan's Irish Pub at - Vieux\, Nice (2 Rue Saint François De 
+ Paule  (Cours Saleya)\, Nice\, France)
+URL:https://www.meetup.com/nice-runners/events/299443075/
+LAST-MODIFIED:20240226T173204Z
+UID:event_jlvnktygcfbgb@meetup.com
+END:VEVENT
+END:VCALENDAR

test/models/event_test.rb

@@ -1,7 +1,9 @@
 require "test_helper"
 
 class EventTest < ActiveSupport::TestCase
-  # test "the truth" do
-  #   assert true
-  # end
+  test "create_from_ics" do
+    file_path = "test/fixtures/files/Sunday+morning+yoga+in+Antibes+.ics"
+    event = Event.create_from_ics(file_path)
+    assert_equal "Sunday morning yoga in Antibes", event.summary
+  end
 end