TeaWithStrangers/tws-on-rails

# coding: utf-8
class TeaTimeMailer < ActionMailer::Base
  include SendGrid
  sendgrid_category :use_subject_lines

  default from: "\"The Tea With Strangers Robots\" <sayhi@teawithstrangers.com>"

  def host_confirmation(tea_time_id)
    sendgrid_category "Tea Time: Creation Confirmation for Host"

    @tea_time = TeaTime.find(tea_time_id)
    mail.attachments['event.ics'] = {mime_type: "text/calendar",
                                     content: IcalCreator.new(@tea_time).call.to_ical}

    mail(to: @tea_time.host.email,
         subject: "Add your tea time (#{@tea_time.start_time.strftime("%-m/%-d, %-l:%M - ")}#{(@tea_time.start_time+2.hours).strftime("%-l:%M%P")}) to the calendar!") do |format|
      format.text
      format.html
    end
  end

  def host_changed(tea_time_id, old_host_id)
    sendgrid_category "Tea Time Host Changed"

    @tt = TeaTime.find(tea_time_id)
    @old, @new = [User.find(old_host_id), @tt.host]
    mail(to: @new.friendly_email,
         cc: @old.friendly_email,
         subject: "You're now hosting #{@old.name}'s tea time on #{@tt.day_date}") do |format|
           format.text
           format.html
         end
  end

  def followup(tea_time_id, attendances, status)
    sendgrid_category "Tea Time Post-Attendance Followup: #{status}"

    @tea_time = TeaTime.find(tea_time_id)

    #TODO: Remove once all past attendances are marked
    if @tea_time.start_time < Time.new(2015, 1, 9)
      cancel_delivery
    end

    # @template is set as instance variable so it can be accessed in the
    # ActionController context and subsequently tested
    robots = "\"Tea With Strangers Robots\" <sayhi@teawithstrangers.com>"
    ankit = "\"Ankit at Tea With Strangers\" <ankit@teawithstrangers.com>"

    case status
    when 'flake'
      sender = robots
      subject = "Let's try this again"
      @template = 'followup_flake'
    when 'no_show'
      sender = ankit
      subject = "Was it something I said?"
      @template = 'followup_no_show'
    when 'waitlisted'
      sender = robots
      subject = "Try for another tea time?"
      @template = 'followup_waitlisted'
    when 'present'
      sender = robots
      subject = "Hey! Thanks."
      @template = 'followup_present'
    else
      #We don't want to followup without explicitly enabling the scenario
      cancel_delivery
    end

    mail(bcc: attendances.map {|a| a.user.email},
         from: sender,
         subject: subject) do |format|
           format.text { render @template }
           format.html { render @template }
         end
  end

  def cancellation(tea_time_id, attendance_id)
    sendgrid_category "Tea Time Cancellation Notification"

    @tea_time = TeaTime.find(tea_time_id)
    att = Attendance.find(attendance_id)
    @user = att.user
    mail(to: @user.email, subject: "Sad days — tea time canceled") do |format|
      format.text
      format.html
    end
  end

  def ethos(user_id)
    sendgrid_category "Tea Time Ethos"

    @user = User.find(user_id)
    #TODO: Determine why passing `template_name` key to mail object doesn't work
    #with format.text and format.html; probably rails magic :'(
    template = 'registration_followup'
    mail(to: @user.email,
         from: "\"Ankit at Tea With Strangers\" <ankit@teawithstrangers.com>",
         subject: "Whoa, is this your first?") do |format|
           format.text { render template }
           format.html { render template }
         end
  end
end