Send automatic email reminders

Closes #4

Rakefile

@@ -25,3 +25,8 @@ desc "Close votes that have expired"
 task :close_expired_votes do
   close_expired_votes
 end
+
+desc "Send email reminders"
+task :send_reminders do
+  send_reminders
+end

config/environments/defaults.rb

@@ -6,3 +6,5 @@ set :values, [ { :id => 1, :label => _("Awful"), :color => '#ff4500' },
                { :id => 5, :label => _("Good"), :color => '#228b22' },
                { :id => 6, :label => _("Very good"), :color => '#006400' } ]
 set :expire_after, 7 * 24 * 60 * 60 # 7 days
+set :reminders, [ { :timeout => 48 * 60 * 60 },
+                  { :timeout => 24 * 60 * 60 } ]

config/schedule.rb

@@ -6,4 +6,5 @@ set :environment_variable, 'RACK_ENV'
 
 every 5.minutes do
   rake "close_expired_votes"
+  rake "send_email_reminders"
 end

db/migrate/20260323215246_add_reminders_to_votes.rb.rb

@@ -0,0 +1,5 @@
+class AddRemindersToVotes < ActiveRecord::Migration[7.2]
+  def change
+    add_column :votes, :reminders, :integer
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.2].define(version: 2025_06_08_223006) do
+ActiveRecord::Schema[7.2].define(version: 2026_03_23_215246) do
   create_table "candidates", force: :cascade do |t|
     t.integer "vote_id"
     t.string "name"
@@ -56,6 +56,7 @@ ActiveRecord::Schema[7.2].define(version: 2025_06_08_223006) do
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
     t.string "state"
+    t.integer "reminders"
   end
 
   add_foreign_key "ratings", "votes"

vedia.rb

@@ -268,6 +268,7 @@ post '/admin/votes/:id' do
     if (@vote.state == 'open' or @vote.state == 'closed') and new_expiry > Time.now
       puts "change"
       @vote.expire_on = new_expiry
+      @vote.reminders = 0
       @vote.state = 'open'
       @vote.save
     end
@@ -589,7 +590,7 @@ def close_expired_votes
       mail = Mail.new
       mail.from = settings.admin_email
       mail.to = user.email
-      mail.subject = _("Results of the vote: %{t}") % { t: vote.title }
+      mail.subject = _("Results of the vote '%{t}'") % { t: vote.title }
       template = ERB.new(File.read("views/votes_close_email.erb"))
       mail.body = template.result(binding)
       mail.deliver
@@ -597,6 +598,34 @@ def close_expired_votes
   end
 end
 
+def send_reminders
+  Vote.where(state: 'open').each do |vote|
+    settings.reminders.slice(vote.reminders..settings.reminders.length-1).each do |reminder|
+      minutes_to_expiry = ( vote.expire_on - Time.now.utc ) / 60
+      if minutes_to_expiry < reminder[:timeout] / 60
+        User.all.each do |user|
+          if not vote.ratings.collect { |rating| rating.user }.include?(user)
+            puts "#{Time.now.utc} Sending reminder #{reminder[:template]} for '#{vote.title}' to #{user.email}..."
+            mail = Mail.new
+            mail.from = settings.admin_email
+            mail.to = user.email
+            if minutes_to_expiry < 60
+              mail.subject = _("%{m} minutes left to vote on '%{t}'") % { m: minutes_to_expiry.round, t: vote.title }
+            else
+              mail.subject = _("%{h} hours left to vote on '%{t}'") % { h: (minutes_to_expiry / 60).round, t: vote.title }
+            end
+            template = ERB.new(File.read("views/votes_reminder_email.erb"))
+            mail.body = template.result(binding)
+            mail.deliver
+          end
+        end
+        vote.reminders = vote.reminders + 1
+        vote.save
+      end
+    end
+  end
+end
+
 helpers do
   def current_user
     if session[:user_id]

views/votes_reminder_email.erb

@@ -0,0 +1,5 @@
+<%= _("You haven't voted yet!") %>
+
+<%= _("Visit this link to vote:") %>
+
+<%= "#{settings.base_url}votes/#{vote.secure_id}" %>