module Mailstro
  class Delivery
    require 'net/http'
    require 'openssl'

    attr_reader :template, :payload

    def self.deliver(template, recipient, payload)
      new(template, recipient, payload).deliver
    end

    def initialize(template, recipient, payload)
      @template  = template
      @recipient = recipient
      @payload   = payload
    end

    def deliver
      http             = Net::HTTP.new(endpoint_uri.host, endpoint_uri.port)
      http.use_ssl     = endpoint_uri.scheme == "https"
      http.verify_mode = OpenSSL::SSL::VERIFY_NONE

      request      = Net::HTTP::Post.new(endpoint_uri.request_uri, { 'Content-Type' =>'application/json' })
      request.body = JSON.generate(post_data)

      Response.new(http.request(request)).json_body
    end

    def recipient
      if @recipient.is_a?(String)
        { :email => @recipient }
      else
        @recipient
      end
    end

    private

    def post_data
      {
        'template'  => template,
        'recipient' => recipient,
        'payload'   => payload,
        'api_key'   => Mailstro.configuration.api_key
      }
    end

    def endpoint_uri
      @endpoint_uri ||= URI.parse(endpoint)
    end

    def endpoint
      (Mailstro.configuration.use_ssl ? "https://" : "http://") +
        "#{Mailstro.configuration.endpoint}/v#{Mailstro.configuration.api_version}/postman"
    end
  end
end