app.rb

# frozen_string_literal: true

# ruby-lang.org mailing list service/subscriber
#
# project home page: https://github.com/stomar/ruby-lang-mls
#
# Copyright (C) 2013-2024 Marcus Stollsteimer
#
# License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

require "sinatra/base"

require_relative "lib/mls"
require_relative "db/connection"
require_relative "db/models"  if DB

ENV["TZ"] = "UTC"

SENDER_EMAIL = ENV.fetch("SENDER_EMAIL", nil)
SMTP_USER    = ENV.fetch("SMTP_USER", nil)
SMTP_PASSWORD = ENV.fetch("SMTP_PASSWORD", nil)
SMTP_ADDRESS = ENV["SMTP_SERVER"] || ""
SMTP_PORT    = ENV["SMTP_PORT"] || "587"
NO_CONFIRM   = ENV["NO_CONFIRM"] == "true"
NO_LOGS      = ENV["NO_LOGS"] == "true"


# The application class.
class App < Sinatra::Base

  set :environment, :production

  configure do
    mailer = MLS::Mailer.new(
      sender_email: SENDER_EMAIL,
      smtp_user: SMTP_USER,
      smtp_password: SMTP_PASSWORD,
      smtp_address: SMTP_ADDRESS,
      smtp_port: SMTP_PORT
    )

    set :mailer, mailer
    set :logger, MLS::Logger.new(no_logs: NO_LOGS)
    set :stats,  MLS::StatsHandler.new

    messages = {
      success: {
        header: "Confirmation",
        text: "Your request has been accepted. " \
              "To complete your request, please follow the instructions " \
              "in the email you should receive shortly."
      },
      invalid: {
        header: "Invalid request",
        text: "Your request is invalid. " \
              "Please make sure that you filled out all fields."
      },
      error: {
        header: "Error",
        text: "Sorry, an error occurred during processing of your request."
      }
    }

    set :messages, messages

    set :status_codes, { success: 200, invalid: 400, error: 500 }
  end

  def escape(text)
    Rack::Utils.escape_html(text)
  end

  get "/" do
    erb :index
  end

  post "/submit" do
    @ml_request = MLS::Request.new(params)

    if @ml_request.valid?
      begin
        settings.mailer.mail(@ml_request.mail_options)
        status = :success
        settings.logger.log(@ml_request.list, @ml_request.action)
        settings.stats.increment(@ml_request.list, @ml_request.action)
      rescue StandardError => e
        status = :error
        settings.logger.log_error(@ml_request.list, @ml_request.action, e)
      end
    else
      status = :invalid
      settings.logger.log_invalid(@ml_request.list, @ml_request.action)
    end

    @header  = settings.messages[status][:header]
    @message = settings.messages[status][:text]

    if NO_CONFIRM
      redirect back
    else
      status settings.status_codes[status]
      erb :confirmation
    end
  end
end