SLM is a Spotify List Manager. With a source file and a changes file it will apply the changes to the source file and create an ouput file.
Add this line to your application's Gemfile:
gem 'slm'And then execute:
$ bundle install
Or install it yourself as:
$ gem install slm
SLM needs a source file and a changes file in JSON format. These files are located in a directory called json. A base directory for the files can be indicated with a --base option or -b flag. To process the changes to the source file and create an ouput file, run the following:
$ slm process --base "json" spotify.json changes.json output.json
After running the command you should now see a file named output.json in the json directory. Opening the file should reveal a copy of the spotify.json file with the changes implemented.
To handle very large input or change files I might introduce queueing and use something like Redis and Sidekiq for processing. If it being a CLI was not a requirement then I would be inclined to create it as a Rails project with a database and a simple GUI.
I chose to use the Thor gem as I have found it to be a great tool for creating CLIs as well as the consideration that future assignments would build upon the project.
I looked over the assignment on Friday but wasn't able to sit down and start work on it until Monday. I did, however, spend time here and there over the weekend thinking about the approach I might take. Once I began, I spent somewhere around an hour or so to get an initial working product and then another half hour or so tweaking and optimizing some things (with a few interruptions from a daughter who just got braces letting me know how much her mouth hurt 😁).