The application was developed on a Mac running BigSur with the following environment:

• Ruby v 2.7.3 (via rbenv)
• Bundler v 2.1.4

• Ruby
• Sinatra

The api was run on an Ubuntu 20.04 virtual machine via VM Fusion.

• I created a new VM and installed the following packages via apt:

• build-essential

• curl

• file

• git

• imagemagick

• libmagickwand-dev

• ghostscript

• I used RVM and installed Ruby v2.7.3

• For the client, I installed nvm and installed v12.16.1

• I then installed yarn via npm.

The API uses ImageMagick to convert PDF files to images. A functionality that has been disabled in Ubuntu and requires editing the ImageMagick policy.xml file. Run the following (if you need to on your machine of VM) A VM is recommended.

• Use whatever text editing method you like to edit the following file
• /etc/ImageMagick-6/policy.xml
• Comment out or delete the following line: <policy domain="coder" rights="none" pattern="PDF" />

• Pull Repo to local environment
• Run the following at the project's root
  • Run bundle install to install required Gems
  • Run ruby start_rackup to start the application in local development mode
  • The application will run at http://localhost:9292/api/

• API uses JWT for authentication.
  • As a proof of concept, a self signed certificate was used to create a long lived token (6 months) that is embeded in the client.
  • The API embeds the public keys from the certificate in order to validate the long lived token.
• As a POC, no database was created, instead a flat JSON file is used to store and retreive data for the client.
• The Dockerfile needs to be updated to account for the ImageMagick policy issues and to install ImageMagick and Ghostscript in the image.