Email users code

app/jobs/send_three_month_email_job.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class SendThreeMonthEmailJob < ApplicationJob
+  queue_as :default
+
+  def perform
+    ThreeMonthEmailService.send_chaser
+  end
+end

app/mailers/concerns/email_delivery.rb

@@ -0,0 +1,19 @@
+module EmailDelivery
+  extend ActiveSupport::Concern
+
+    private
+
+    def log_sent_email
+      member = params[:member]
+      return unless member
+
+      MemberEmailDelivery.create!(
+        member: member,
+        subject: mail.subject,
+        body: mail.body.to_s,
+        to: mail.to,
+        cc: mail.cc,
+        bcc: mail.bcc
+      )
+    end
+end

app/mailers/member_mailer.rb

@@ -1,5 +1,16 @@
 class MemberMailer < ApplicationMailer
   include EmailHeaderHelper
+  include EmailDelivery
+
+  after_action :log_sent_email, only: [:chaser]
+
+  def chaser
+    @member = params[:member]
+    subject = "It’s been a while, how are you doing? ♥️"
+    mail mail_args(@member, subject, 'hello@codebar.io', 'hello@codebar.io') do |format|
+      format.html {render 'three_month_chaser'}
+    end
+  end
 
   def welcome(member)
     if member.student?

app/models/member.rb

@@ -22,6 +22,7 @@ class Member < ApplicationRecord
   has_many :chapters, -> { distinct }, through: :groups
   has_many :announcements, -> { distinct }, through: :groups
   has_many :meeting_invitations
+  has_many :member_email_deliveries
 
   validates :auth_services, presence: true
   validates :name, :surname, :email, :about_you, presence: true, if: :can_log_in?

app/models/member_email_delivery.rb

@@ -0,0 +1,3 @@
+class MemberEmailDelivery < ApplicationRecord
+  belongs_to :member, polymorphic: true, optional: true
+end

app/services/three_month_email_service.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+class ThreeMonthEmailService
+  def self.send_chaser
+    members = Member.joins(:workshop_invitations)
+                    .left_joins(:member_email_deliveries)
+                    .where(workshop_invitations: { attended: false })
+                    .where("workshop_invitations.created_at >= ?", 3.months.ago.beginning_of_day)
+                    .where(member_email_deliveries: { id: nil })
+                    .distinct
+    return if members.empty?
+    members.each do |member|
+      MemberMailer.with(member: member).chaser.deliver_later
+    end
+  end
+end

app/views/member_mailer/three_month_chaser.html.haml

@@ -0,0 +1,21 @@
+%h1 Hi #{@member.name},
+
+%p
+We’ve noticed you haven’t been to a codebar workshop in a little while, and we just wanted to check in. We know life gets busy, but we’d love to understand how things are going for you and whether there’s anything we can do to make it easier or more valuable for you to join again.
+%p
+If you have a minute, could you please share your thoughts in this short form? 👉 https://forms.gle/tEETvC3zYP9mcLar7
+
+%p
+Or, if you’re thinking about coming back soon, we’ve got some great upcoming workshops and events you might like to join 👉https://codebar.io/events/
+
+%p
+Your feedback really helps us make codebar more welcoming and useful for everyone in our community 💜
+
+%p
+We’d love to see you again soon!
+
+%p
+#{"-- "}
+%br
+Warmly,
+The Codebar Team

config/application.rb

@@ -33,6 +33,9 @@ class Application < Rails::Application
 
     config.active_record.belongs_to_required_by_default = true
 
+    # let's start using Active Job!
+    config.active_job.queue_adapter = :delayed_job
+
     if ENV["RAILS_LOG_TO_STDOUT"].present?
       $stdout.sync = true
       config.rails_semantic_logger.add_file_appender = false

config/environments/test.rb

@@ -1,5 +1,6 @@
 require "active_support/core_ext/integer/time"
 require "timecop"
+require "active_job/test_helper"
 
 # The test environment is used exclusively to run your application's
 # test suite. You never need to work with it otherwise. Remember that
@@ -55,6 +56,8 @@
   # Raise error when a before_action's only/except options reference missing actions.
   config.action_controller.raise_on_missing_callback_actions = true
 
+  config.active_job.queue_adapter = :test
+
   # Fake omniauth for testing
   OmniAuth.config.test_mode = true
 

spec/fabricators/member_email_delivery_fabricator.rb

@@ -0,0 +1,6 @@
+Fabricator(:member_email_delivery) do
+  member(fabricator: :member)
+  subject("Chaser")
+  body("Lorem ipsum")
+  to(["test_email@address"])
+end

spec/mailers/member_mailer_spec.rb

@@ -115,4 +115,21 @@
       end.to change { ActionMailer::Base.deliveries.count }.by 1
     end
   end
+
+  describe "#chaser" do
+    it "logs the sent email" do
+      expect do
+        MemberMailer
+          .with(member: member)
+          .chaser
+          .deliver_now
+        end.to change(MemberEmailDelivery, :count).by(1)
+
+      log = MemberEmailDelivery.last!
+
+      expect(log.member).to eq(member)
+      expect(log.subject).to eq("It’s been a while, how are you doing? ♥️")
+      expect(log.to).to eq([member.email])
+    end
+  end
 end

spec/services/three_month_email_service_spec.rb

@@ -0,0 +1,43 @@
+RSpec.describe ThreeMonthEmailService, type: :service do
+  describe "#send_chaser" do
+    subject(:call) { described_class.send_chaser }
+
+    let!(:eligible_member)      { Fabricate(:member) }
+    let!(:emailed_member)       { Fabricate(:member) }
+    let!(:old_invite_member)    { Fabricate(:member) }
+
+    before do
+      # Eligible: recent invite, no email delivery
+      Fabricate(
+        :workshop_invitation,
+        member: eligible_member,
+        created_at: 3.months.ago,
+        attended: false
+      )
+
+      # Already emailed: recent invite, but has email delivery
+      Fabricate(
+        :workshop_invitation,
+        member: emailed_member,
+        created_at: 2.months.ago
+      )
+      Fabricate(
+        :member_email_delivery,
+        member: emailed_member
+      )
+
+      # Old invite: more than 3 months ago
+      Fabricate(
+        :workshop_invitation,
+        member: old_invite_member,
+        created_at: 4.months.ago
+      )
+    end
+
+    it "enqueues chaser emails only for eligible members" do
+      expect {
+        call
+      }.to have_enqueued_mail(MemberMailer, :chaser).once
+    end
+  end
+end

spec/spec_helper.rb

@@ -57,6 +57,7 @@ def self.branch_coverage?
 ActiveRecord::Migration.check_all_pending! if defined?(ActiveRecord::Migration)
 
 RSpec.configure do |config|
+  config.include ActiveJob::TestHelper
   config.include ApplicationHelper
   config.include LoginHelpers
   config.include ActiveSupport::Testing::TimeHelpers
@@ -95,6 +96,9 @@ def self.branch_coverage?
       to_return(status: 200, body: '{"status":"active","segments":[]}', headers: { 'Content-Type' => 'application/json' })
 
     DatabaseCleaner.strategy = :transaction
+
+    clear_enqueued_jobs
+    clear_performed_jobs
   end
 
   # Driver is using an external browser with an app