The Peek iOS Coding Challenge

How I Solved It

View Models

I created a RepoListViewModel class to handle functionality of fetching repos, storing cell view models, and to keep the RepoListViewController clean. The view controller has access to 2 closures, repoFetchCompleted and repoFetchError. repoFetchCompleted is used to refresh the table view and repoFetchError is used to display an error message and allow the user to retry the failed query.

RepoCellViewModel is used for the table view cells and is initialized with RepositoryDetails. Setting the viewModel property on my RepoTableViewCell will call configure(with viewModel: RepoCellViewModel) and display the relevant data in the cell.

Interaction

• If a user scrolls within 100pts of the list bottom, more repos will be fetched.
• If a user selects a cell, a SFSafariViewController will present the repo on GitHub.

Libraries

I used Kingfisher to download and cache the user's avatar images.

With More Time I Would've...

• Added UI and Unit tests to automatically verify functionality.
• Created a different layout for iPads.
• Allowed a user to interact with a repo by becoming a stargazer.