Super simple html photo emailer using Sinatra, Amazon S3 and Gmail

config.yml

public_folder : /path/to/your/photos

# Amazon s3
s3_bucket : yourS3bucket
s3_key    : yourS3key
s3_secret : yourS3secret

# Mail
mail_options :
  :user_name            : yourGmailAccount@gmail.com
  :password             : yourGmailPass
  :address              : smtp.gmail.com
  :port                 : 587
  :enable_starttls_auto : true
  :authentication       : :plain
  :domain               : localhost.localdomain

photo_mailer.rb

require 'rubygems'
require 'sinatra'
require "sinatra/config_file"
require 'haml'
require 'aws/s3'
require 'pony'

config_file 'config.yml'

$photos = Dir[ File.join(settings.public_folder, '**', '*.{jpg,JPG}') ].last(20).reverse

get '/' do
	haml :index, :locals => {:notice=> ''}
end

post '/' do
	filename = params[:filename]
	# Connect to Amazon S3
	AWS::S3::Base.establish_connection!(
		:access_key_id     => settings.s3_key,
		:secret_access_key => settings.s3_secret
	)
	# Upload the file only if it doesn't exist yet
	unless AWS::S3::S3Object.exists? filename, settings.s3_bucket
		AWS::S3::S3Object.store(
			filename,
			open( settings.public_folder + filename ),
			settings.s3_bucket,
			:access => :public_read
		)
	end
	# Send the link via email
	Pony.mail :to => params[:email],
						:from => "contact@lab212.org",
						:subject => "Votre photo Playtime",
						:html_body => haml(:email, :locals => { :url => "http://" + settings.s3_bucket  + ".s3.amazonaws.com/" + filename }),
						:via => :smtp,
					  :via_options => settings.mail_options
	# Redirect to home page with a success notice
	haml :index, :locals => {:notice=> 'photo successfully uploaded & sent by mail!'}
end

__END__

@@index
%p=notice
%table
	- $photos.each do |item|
		- item = item.split('/').last
		%tr
			%td
				%img{:src=>item, :width=>"300"}
				%br
			%td
				%form{:action=>"/",:method=>"post",:enctype=>"multipart/form-data"}
					%input{:type=>"hidden", :name=>"filename", :value=> item }
					%input{:type=>"text", name:"email"}
					%input{:type=>"submit",:value=>"Envoyer"}

@@email
%a{:href=>url}
	%img{:src=>url}