module Triklemailer

Constants

Options
VERSION

Public Class Methods

log_sent(email, template) click to toggle source

# File lib/triklemailer.rb, line 97
def self.log_sent(email, template)
  log_file_name = "./#{['sent', template.split('.').first].join('_')}.csv"

  CSV.open(
    log_file_name,
    'a',
    write_headers: !File.exists?(log_file_name),
    headers: ['email', 'sent_at']
  ) do |csv|
    csv << [email, Time.now]
  end
end

send_mail(options, recipients, sent) { |mail, recipient| ... } click to toggle source

It should take:

A list of emails and data
SMTP account details
A template
SMTP Server details

and it should send an email to each email address from the csv using the template provided, filled in with the meta data provided for the email address. When each email is sent it should record that in a separate csv called sent_<template-name>.csv. Failures to send a messages should not be recorded. When sending emails it should check the sent_<template-name>.csv and if it exists, only send emails to email address not included in the sent_<template-name>.csv file.

Read provided csv Check for sent_ csv For each email, meta_data in provided csv

If email in sent_ csv
  Next email

Read template file
Apply meta_data to template file
Send email with data from cli or meta data with template
If there was an error sending
  Next email
Record email sent to template in sent_ csv

# File lib/triklemailer.rb, line 40
def self.send_mail(options, recipients, sent)
  cleaned_template = options.template.gsub(/%(?!{)/, '%%')

  recipients.
    reject { |recipient| sent.include?(recipient[:email]) }.
    each do |recipient|
    mail = Mail.new do
      from recipient.fetch(:from, options.from)
      to recipient.fetch(:to, recipient.fetch(:email) {
        raise "Some rows are missing either a 'to' or 'email' column."
      })
      bcc options.bcc if options.bcc
      subject recipient.fetch(:subject, options.subject)

      if options.is_html
        html_part do
          content_type 'text/html; charset=UTF-8'
          body cleaned_template % recipient
        end
      else
        text_part do
          body cleaned_template % recipient
        end
      end

      add_file(File.expand_path(options.attachment)) if options.attachment
    end

    if block_given?
      yield(mail, recipient)
    else
      mail.delivery_method :smtp, {
        address: recipient.fetch(:host, options.host),
        port: recipient.fetch(:port, options.port),
        user_name: recipient.fetch(:username, options.username),
        password: recipient.fetch(:password, options.password),
        authentication: :login,
        enable_starttls_auto: true
      }
    end

    begin
      mail.deliver!
      # might fail in here though...
      log_sent(
        recipient.fetch(:to, recipient[:email]),
        options.template_name)
    rescue => e
      puts "Failed to send email to #{recipient[:email]}."
      puts e.class
      puts e
      puts e.backtrace
      next
    end
  end
end