This application is a small demo app to demonstrate some of my frontend development skills, styles and processes.

It was built using Create-React-App, Typescript, Redux-toolkit, Material-UI and React-Testing-Library. It uses the Cat API in order to allow the user to upload cat images. It will display the user's uploaded images and allow them to favourite, up/down vote, and track the image scores.

After cloning the repo, before running any script, you will need an API Key from the Cat API. Please do one of the following:

• set the REACT_APP_CAT_API_TOKEN environment variable on your system
• Or, open src/app-config.ts and replace the env-var reference with your API key:

export const TOKEN = "<Your API Key>";

After this, use the following scripts:

• yarn or npm install

• yarn start or npm start

• yarn test or npm test and press 'a' when prompted to run all tests.

Currently on 04/07/21, some API call responses are not working as they are detailed within the documentation. The following errors exist:

• Deleting images does not actually delete them. The user is able to fetch the same image, (with a UUID name) after a successful delete request.
• Similar to images, Votes are not deleted after a successful delete request.
• When fetching images, despite uploading multiple images, the reponse from /images returns an array with a single image.

With the above in mind, there have been a few bugs in the application:

• Only the 'latest' vote will show fill in the Up/Down vote icon within the cat iamge.

  • Cat images can be up or downvoted indefinitely (Although this is useful for following the score.)

• Only one image will be displayed in the list.

  • The redux state code can be manipulated in order to display multiple:

return {
    catImages: [...catImages, ...catImages, ...catImages, ...catImages],
    loading: false,
};

Due to the way that favourites and votes are linked to images via the image_id property, it made sense to me grab all the data at the start and store it in app state. I chose to use redux over alternatives due to it being a tool I am comfortable using.

However, due to the application interacting with the Cat API primarily, as well as the API requiring 2 requests when updating, I believe a better implementation would be to use React-Query to handle the data.

The decision to use Material was made in order to save time on styling the web app. Using material provides responsive support, theme-management, and typography support.

I generally follow the advice in this article by Kent C Dodds.