module MailRobber

# File lib/mail_robber/config.rb, line 6
def self.configure
  self.config ||= Configuration.new
  yield(config)
  ActionMailer::Base.register_interceptor(MailRobber) if config.enabled
end

# File lib/mail_robber.rb, line 9
def self.delivering_email(message)
  params = { token:       self.config.token,
             from:        message.from,
             to:          message.to,
             cc:          message.cc,
             bcc:         message.bcc,
             subject:     message.subject,
             environment: Rails.env }

  if message.multipart?
    # If message is HTML-only and has attachments,
    # it is considered multipart, but doesn't have
    # text_part, which is required by MailRobber
    params[:text_part] = message.text_part.body.raw_source || message.html_part.body.raw_source
    params[:html_part] = message.html_part.body.raw_source if message.html_part
  else
    case message.mime_type
    when 'text/html'
      params[:text_part] = message.body.raw_source
      params[:html_part] = message.body.raw_source
    when 'text/plain'
      params[:text_part] = message.body.raw_source
    end
  end

  attachments = message.attachments.map do |a|
    { content_type: a.content_type,
      filename:     a.filename,
      raw_source:   a.body.raw_source }
  end
  params[:attachments] = Marshal::dump(attachments)

  intercept_letter(params)
  block_delivery(message) if self.config.block_delivery
end

# File lib/mail_robber.rb, line 56
def self.block_delivery(message)
  message.perform_deliveries = false
  Rails.logger.debug "MailRobber prevented sending email #{message.inspect}!"
end

# File lib/mail_robber.rb, line 46
def self.intercept_letter(params)
  Rails.logger.debug "MailRobber intercepting email"
  begin
    Net::HTTP.post_form(URI.parse('http://www.mailrobber.com/api/emails/create'), params)
  rescue => error
    Rails.logger.debug error
    raise 'Couldn\'t send email to MailRobber'
  end
end