25 April, 2021
Guide Fari
Consuming an API in your web app
I've broken the pattern down into 5 major pieces:
1. async
function that awaits
a response
from the server.
router.get('/alltracks', async (req: Request, res:Response) => {
const alltracks = await Track.find({})
})
2. checking the response status
status codes can affect flow of the program in many different ways, depending on the use case.
const checkedResponse: Response = await checkResponseStatus(response);
3. retrieve the json
content from the response
assuming what you're receiving is json.
let tracks: unknown = await getJsonContent(checkedResponse);
4. return
nicely formatted data
as per the needs of your app
let retVal: Track[] = tracks.map(track =>
new Track(
track.name,
track.id,
track.artists,
track.streamURL,
track.thumbnailURL,
track.genres
)
5. optional? validate data before returning it.
I wonder what options I have to achieve this at runtime, I've seen use of io-ts so far. again, what you use at this stage is a contextual solution.
These are to serve as a general guideline, things to think about, when consuming external data into your application.