Add Hey Calendar URL

README.md

@@ -41,6 +41,9 @@ Or install it yourself as:
 @cal.yahoo_url
 #=> "https://calendar.yahoo.com/?v=60&view=d&type=20&title=Christmas%20party%21&st=20201212T133000Z&dur=0100"
 
+@cal.hey_url
+#=> "https://app.hey.com/calendar/ical_events/new?ical_source=BEGIN%3AVCALENDAR%0AVERSION%3A2.0%0APRODID%3A-//AddToCalendar//RubyGem//EN%0ABEGIN%3AVEVENT%0ASUMMARY%3AHolly%27s%209th%20birthday%21%0ADTSTAMP%3A20240913T151029Z%0ADTSTART%3A20240906T123000Z%0ADTEND%3A20240906T133000Z%0AUID%3A-20240906T123000Z-Holly%27s%209th%20birthday%21%0AEND%3AVEVENT%0AEND%3AVCALENDAR"
+
 @cal.office365_url
 #=> "https://outlook.office.com/calendar/0/deeplink/compose?path=/calendar/action/compose&rru=addevent&subject=Christmas%20party%21&startdt=2020-12-12T13:30:00Z&enddt=2020-12-12T14:30:00Z"
 

lib/add_to_calendar.rb

@@ -92,6 +92,59 @@ def yahoo_url
       return calendar_url
     end
 
+    def hey_url
+      calendar_url = "https://app.hey.com/calendar/ical_events/new?ical_source=BEGIN%3AVCALENDAR%0AVERSION%3A2.0%0APRODID%3A-//AddToCalendar//RubyGem//EN%0ABEGIN%3AVEVENT"
+
+      params = {}
+      params[:SUMMARY] = url_encode(title)
+      params[:DTSTAMP] = Time.now.strftime("%Y%m%dT%H%M%SZ")
+
+      if all_day
+        one_day = 1 * 24 * 60 * 60
+        params["DTSTART%3BVALUE=DATE"] = format_date(start_datetime)
+        if end_datetime
+          params["DTEND%3BVALUE=DATE"] = format_date(end_datetime + one_day)
+        else
+          params["DTEND%3BVALUE=DATE"] = format_date(start_datetime + one_day)
+        end
+      else
+        params[:DTSTART] = utc_datetime(start_datetime)
+        if end_datetime
+          params[:DTEND] = utc_datetime(end_datetime)
+        else
+          params[:DTEND] = utc_datetime(start_datetime + 60*60) # 1 hour later
+        end
+      end
+
+      params[:URL] = url_encode(url) if url
+      params[:UID] = "-#{utc_datetime(start_datetime)}-#{url_encode(title)}"
+      params[:DESCRIPTION] = url_encode_hey(description) if description
+      if add_url_to_description && url
+        if params[:DESCRIPTION]
+          params[:DESCRIPTION] << "\n\n#{url_encode(url)}"
+        else
+          params[:DESCRIPTION] = url_encode(url)
+        end
+      end
+      if organizer
+        params[:ORGANIZER] = url_encode("CN=\"#{organizer[:name]}\"%3Amailto%3A#{organizer[:email]}")
+      end
+      params[:LOCATION] = url_encode(location) if location
+
+      new_line = "%0A"
+      params.each do |key, value|
+        if key == :ORGANIZER
+          calendar_url << "#{new_line}#{key}%3B#{value}"
+        else
+          calendar_url << "#{new_line}#{key}%3A#{value}"
+        end
+      end
+
+      calendar_url << "%0AEND%3AVEVENT%0AEND%3AVCALENDAR"
+
+      return calendar_url
+    end
+
     def office365_url
       # Eg. https://outlook.live.com/calendar/0/deeplink/compose?path=/calendar/action/compose&rru=addevent&subject=Holly%27s%208th%20Birthday%21&startdt=2020-05-12T12:30:00Z&enddt=2020-05-12T16:00:00Z&body=Come%20join%20us%20for%20lots%20of%20fun%20%26%20cake%21%0A%0Ahttps%3A%2F%2Fwww.example.com%2Fevent-details&location=Flat%204%2C%20The%20Edge%2C%2038%20Smith-Dorrien%20St%2C%20London%2C%20N1%207GU
       microsoft("office365")
@@ -326,6 +379,17 @@ def url_encode_ical(s)
         }.join("\\n")
       end
 
+      def url_encode_hey(s)
+        string = s.dup # don't modify original input
+        string.split("\n").map { |e|
+          if e.empty?
+            e
+          else
+            url_encode(e)
+          end
+        }.join("\n")
+      end
+
       def yahoo_param(key)
         if key == :in_loc
           key.to_s

test/support/assertions/hey_url_assertions.rb

@@ -0,0 +1,68 @@
+require 'uri'
+require 'cgi'
+
+module Minitest::Assertions
+  def assert_hey_urls_equal(expected, actual, msg = nil)
+    differences = compare_hey_urls(expected, actual)
+
+    if differences.empty?
+      assert true # URLs are identical
+    else
+      failure_message = build_failure_message(differences)
+      msg = message(msg) { failure_message }
+      assert false, msg
+    end
+  end
+
+  private
+
+  def decode_ical_source(url)
+    uri = URI(url)
+    CGI.unescape(URI.decode_www_form(uri.query).to_h['ical_source']).split("\n")
+  end
+
+  def compare_hey_urls(url1, url2)
+    ical1 = decode_ical_source(url1)
+    ical2 = decode_ical_source(url2)
+
+    differences = []
+
+    # Compare each line of the decoded ical_source
+    ical1.zip(ical2).each_with_index do |(line1, line2), index|
+      if line1 != line2
+        differences << {
+          line_number: index + 1,
+          expected_line: line2,
+          actual_line: line1
+        }
+      end
+    end
+
+    # Handle case where one ical_source is longer than the other
+    if ical1.length != ical2.length
+      start = [ical1.length, ical2.length].min
+      longer = ical1.length > ical2.length ? ical1 : ical2
+      longer_label = ical1.length > ical2.length ? 'actual' : 'expected'
+
+      longer[start..-1].each_with_index do |line, i|
+        differences << {
+          line_number: start + i + 1,
+          "#{longer_label}_line": line,
+          "#{longer_label == 'actual' ? 'expected_line' : 'actual_line'}": nil
+        }
+      end
+    end
+
+    differences
+  end  
+
+  def build_failure_message(differences)
+    message = "Hey URLs do not match. Differences found:\n"
+    differences.each do |diff|
+      message << "Line #{diff[:line_number]}:\n"
+      message << "  Expected: #{diff[:expected_line]}\n"
+      message << "  Actual:   #{diff[:actual_line]}\n\n"
+    end
+    message
+  end
+end

test/test_helper.rb

@@ -3,3 +3,5 @@
 require "minitest/autorun"
 require "timecop"
 require "pry"
+
+Dir[File.expand_path('support/**/*.rb', __dir__)].each { |file| require file }