Depend on external holiday file

Gemfile

@@ -1,18 +1,16 @@
 # frozen_string_literal: true
 
 source "https://rubygems.org"
- ruby "2.6.5"
+ruby "2.7.4"
 
 gem "sinatra"
 gem "thin"
 
+gem "activesupport"
+gem "holidays"
 gem "icalendar"
 gem "platform-api" # Heroku
 
 group :development do
   gem "standard"
 end
-
-group :test do
-  gem "rspec"
-end

Gemfile.lock

@@ -1,9 +1,15 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    activesupport (6.1.4.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+      zeitwerk (~> 2.3)
     ast (2.4.1)
+    concurrent-ruby (1.1.9)
     daemons (1.3.1)
-    diff-lcs (1.4.4)
     erubis (2.7.0)
     eventmachine (1.2.7)
     excon (0.75.0)
@@ -12,9 +18,13 @@ GEM
       excon
       moneta
       multi_json (>= 1.9.2)
+    holidays (8.4.1)
+    i18n (1.8.11)
+      concurrent-ruby (~> 1.0)
     icalendar (2.6.1)
       ice_cube (~> 0.16)
     ice_cube (0.16.3)
+    minitest (5.14.4)
     moneta (1.0.0)
     multi_json (1.15.0)
     mustermann (1.1.1)
@@ -33,19 +43,6 @@ GEM
     rate_throttle_client (0.1.2)
     regexp_parser (1.7.1)
     rexml (3.2.4)
-    rspec (3.9.0)
-      rspec-core (~> 3.9.0)
-      rspec-expectations (~> 3.9.0)
-      rspec-mocks (~> 3.9.0)
-    rspec-core (3.9.2)
-      rspec-support (~> 3.9.3)
-    rspec-expectations (3.9.2)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.9.0)
-    rspec-mocks (3.9.1)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.9.0)
-    rspec-support (3.9.3)
     rubocop (0.85.1)
       parallel (~> 1.10)
       parser (>= 2.7.0.1)
@@ -74,18 +71,25 @@ GEM
       eventmachine (~> 1.0, >= 1.0.4)
       rack (>= 1, < 3)
     tilt (2.0.10)
+    tzinfo (2.0.4)
+      concurrent-ruby (~> 1.0)
     unicode-display_width (1.7.0)
+    zeitwerk (2.5.1)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
+  activesupport
+  holidays
   icalendar
   platform-api
-  rspec
   sinatra
   standard
   thin
 
+RUBY VERSION
+   ruby 2.7.4p191
+
 BUNDLED WITH
    2.1.4

calendar.rb

@@ -1,7 +1,8 @@
 $LOAD_PATH << "lib"
+require "active_support"
 require "holidays"
-
 require "icalendar"
+
 require "sinatra"
 
 get "/" do
@@ -11,13 +12,11 @@
 get "/:province.ics" do
   cal = Icalendar::Calendar.new
 
-  6.times do |i|
-    Holiday.all(Date.today.year + i, params[:province] || Holiday.provinces).each do |holiday|
-      cal.event do |e|
-        e.dtstart = Icalendar::Values::Date.new(holiday.date)
-        e.dtend = Icalendar::Values::Date.new(holiday.date)
-        e.summary = holiday.name
-      end
+  Holidays.between(8.months.ago, 66.months.from_now, :"ca_#{params[:province].downcase}").each do |holiday|
+    cal.event do |e|
+      e.dtstart = Icalendar::Values::Date.new(holiday[:date])
+      e.dtend = Icalendar::Values::Date.new(holiday[:date])
+      e.summary = holiday[:name]
     end
   end
   cal.publish
@@ -60,7 +59,7 @@
           <li><a href="/NU.ics">Nunavut</a></li>
         </ul>
 
-        <p>Originally sourced from <a href="http://www.statutoryholidays.com/">Statutory Holidays Canada</a></p>
+        <p>Data via Ruby <a href="https://github.com/holidays/holidays/">Holidays gem</a></p>
       </div>
     </div>
   </div>