require 'image_fu/version'
require 'image_fu/client'
require 'base64'
require 'openssl'
require 'uuidtools'
require 'rack/utils'
require 'aws-sdk'

module ImageFu
  CONFIG = {
    :access_key_id     => ENV['IMAGE_FU_AWS_ACCESS_KEY'] || ENV['AWS_ACCESS_KEY'],
    :secret_access_key => ENV['IMAGE_FU_AWS_SECRET']     || ENV['AWS_SECRET'],
    :upload_bucket     => ENV['IMAGE_FU_UPLOAD_BUCKET']  || ENV['UPLOAD_BUCKET'],
    :server            => 'http://image-fu.heroku-apps.com'
  }

  def self.config(options)
    CONFIG.merge!(options)
  end

  def self.s3
    AWS::S3.new(:access_key_id => CONFIG[:access_key_id], :secret_access_key => CONFIG[:secret_access_key])
  end

  def self.signed_upload_params(options = {})
    options.reverse_merge!(
      :acl      => 'private',
      :max_size => 10.megabytes,
      :expiry   => 1.hour,
      :bucket   => CONFIG[:upload_bucket]
    )

    key = UUIDTools::UUID.random_create.to_s

    bucket = s3.buckets[options[:bucket]]

    form = bucket.presigned_post(
      :key                   => key,
      :expires               => options[:expiry].to_i,
      :acl                   => options[:acl],
      :success_action_status => 201,
      :content_length        => 0..(options[:max_size]),
      :ignore                => ['Filename']
    )

    {
      :server     => CONFIG[:server],
      :bucket     => options[:bucket],
      :parameters => form.fields
    }
  end

  def self.get_image(id)
    client.get_image(id)
  end

  def self.client
    ImageFu::Client.new
  end

end

require 'image_fu/engine' if defined?(::Rails::Engine)