makexyz.rb

# Access makexyz.com's API to POST a design.
# http://www.makexyz.com/developers
#
# # Usage with Rails
#
# Add `gem "rest-client"` in your `Gemfile`.
#
# Place this file in your Rails' `lib` directory.
#
# Create a `config/initializers/makexyz.rb`:
#
#   require "makexyz"
#   ENV['MAKEXYZ_KEY'] = "yourkey"
#
# Use it in your controllers like this:
#
#   file = File.open("design.stl")
#   upload = Makexyz::Upload.new(file)
#   if upload.send
#     redirect_to upload.url
#   else
#     redirect_to :back, upload.error
#   end
#
module Makexyz
  class Upload
    attr_reader :url, :error

    def initialize(file)
      @file = file
    end

    def send
      key = ENV['MAKEXYZ_KEY'] or fail "Missing ENV['MAKEXYZ_KEY']"
      url = "http://www.makexyz.com/api/upload_design?api_key=#{key}"

      response = RestClient::Request.execute(
        method: :post,
        url: url,
        payload: { file: @file },
        
        # Disable file timeout option
        # Depending on your configuration, you can try one or the other.
        timeout: -1,
        #open_timeout: -1
      )

      json = JSON.parse(response)

      if json["success"]
        @url = json["url"]
        true
      else
        @error = json["error"]
        false
      end
    end
  end
end

makexyz_spec.rb

require 'spec_helper'

describe Makexyz::Upload do
  before do
    ENV['MAKEXYZ_KEY'] = "testkey"
  end

  let(:file) { double(:file) }
  let(:json) { double(:file) }

  it "uploads a design" do
    allow(RestClient::Request).to receive(:execute) {
      '{"success":true, "url":"http://example.org"}'
    }

    upload = Makexyz::Upload.new(file)

    expect(upload.send).to be_true
    expect(upload.url).to eq("http://example.org")
    expect(RestClient::Request).to have_received(:execute).with(
      method: :post,
      url: "http://www.makexyz.com/api/upload_design?api_key=testkey",
      payload: { file: file },
      timeout: -1
    )
  end

  it "stores errors" do
    allow(RestClient::Request).to receive(:execute) {
      '{"success":false, "error":"Some kind of error"}'
    }

    upload = Makexyz::Upload.new(file)

    expect(upload.send).to be_false
    expect(upload.url).to be_nil
    expect(upload.error).to eq("Some kind of error")
  end
end