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70 lines
1.9 KiB
70 lines
1.9 KiB
import { httpGet } from './mock-http-interface';
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// Keys accepted by the TResult type
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type Keys = 'Arnie Quote' | 'FAILURE';
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// TResult (array of which to return)
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type TResult = {
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[K in Keys]?: string;
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}
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// Result returned by the httpGet method
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type getResult = {
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status: number,
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body: string,
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}
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// The body of the getResult type, when decoded from json string
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type getResultBody = {
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message: string,
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}
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/**
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* Get and parse results from the mock http server
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* Note: I went a little overboard with the comments, so you know how I was thinking about this
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*
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* @param {string[]} url
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* @return {Promise<TResult[]>}
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*/
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export const getArnieQuotes = async (urls : string[]) : Promise<TResult[]> => {
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// Array to return
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let t_results: TResult[] = [];
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// All needing to resolve before returning (using Promise.all(promises))
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let promises: Promise<void>[] = [];
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// Iterate through all urls
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for (let url of urls) {
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// Get the data from the url
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let promise: Promise<void> = httpGet(url)
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.then((result: getResult) => {
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// Determine whether the mock api call was successful
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let getResultKey: Keys = 'FAILURE';
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if (result.status === 200) {
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getResultKey = 'Arnie Quote';
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}
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// Decode the result_body
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let result_body: getResultBody = JSON.parse(result.body);
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// Push the results to the return array
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t_results.push({
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[getResultKey]: result_body.message,
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} as TResult);
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// Resolve the promise after we are done
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return Promise.resolve();
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});
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// Push the promise to the "promises" array
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promises.push(promise);
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}
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// Wait for all promises to resolve
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await Promise.all(promises);
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// Return the data
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return t_results;
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};
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