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CrossKnowledge - Technical challenge (.NET)
Raw
README.md

Technical challenge

Here is the description of what you'll need to implement and answer on this technical challenge.

Challenges

You'll answer the 4 following challenges.

1. Cache function

Implement a function (it may be on the same module - SimpleJsonRequest.cs) to cache requests preventing unecessary calls. You may use this Redis module as a cache service.

Note: You can use any .NET version

2. Date formatting

Implement a JavaScript code (on the same file - date-format.html) that replaces the date value of all elements (that have js-date-format class) with the value of the time passed from now (new Date()). Use the following format:

  • 1 second ago OR X seconds ago
  • 1 minute ago OR X minutes ago
  • 1 hour ago OR X hours ago
  • Date in ISO format (original format)

Example:

Working example

Note: You should use ecmascript 6 features but may not use any framework or add any dependency.

3. Apply style

Implement the CSS code to make the component on component.html look like the desired mockup below.

Mockup:

Desired mockup

Note #1: You should use new CSS features and add classes as you need, but try not to change the HTML structure.

Note #2: We recommend you try using BEM.

4. Question

Send us your answer for the following question:

What are the main HTTP verbs used in REST applications and what are they meant for?

Raw
component.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>CrossKnowledge - Code challenge</title>
<link href="https://fonts.googleapis.com/css?family=Roboto:300,400,500" rel="stylesheet">
</head>
<body>
<article>
<header>
<div>
<div>
Avengers: Infinity War
</div>
<div>
156 minutes
</div>
</div>
<div>
85% <img src="https://www.rottentomatoes.com/assets/pizza-pie/images/icons/global/cf-lg.3c29eff04f2.png" alt="">
</div>
</header>
<div>
<img src="https://resizing.flixster.com/Xjz2VShAGgZ6Z5AaSxUcgw4MRNo=/fit-in/200x296.2962962962963/v1.bTsxMjcwMDQ5MztqOzE4MDU2OzEyMDA7MTY4ODsyNTAw">
<a href="https://www.rottentomatoes.com/m/avengers_infinity_war" target="_blank">
Check review
</a>
</div>
<footer>
<p>
An unprecedented cinematic journey ten years in the making and spanning the entire Marvel Cinematic Universe, Marvel Studios' "Avengers: Infinity War" brings to the screen the ultimate, deadliest showdown of all time. The Avengers and their Super Hero allies must be willing to sacrifice all in an attempt to defeat the powerful Thanos before his blitz of devastation and ruin puts an end to the universe.
</p>
</footer>
</article>
</body>
</html>
Raw
date-format.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>CrossKnowledge - Code challenge</title>
</head>
<body>
<script>
// This will create elements for testing every second
// Don't change this code if possible
(() => {
let elementsCount = 100
for (i = 0; i < elementsCount; i++) {
setTimeout(() => {
let el = document.createElement("div")
el.className = 'js-date-format'
el.innerHTML = (new Date()).toISOString()
document.body.appendChild(el)
}, i * 1000)
}
})();
</script>
</body>
</html>
Raw
SimpleJsonRequest.cs
using System.IO;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Collections.Generic;
using Newtonsoft.Json;
namespace Challenge
{
class SimpleJsonRequest
{
public static async Task<string> GetAsync(string url)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
using(HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync())
using(Stream stream = response.GetResponseStream())
using(StreamReader reader = new StreamReader(stream))
{
return await reader.ReadToEndAsync();
}
}
public static async Task<string> PostAsync(string url, Dictionary<string, string> data)
{
return await RequestAsync("POST", url, data);
}
public static async Task<string> PutAsync(string url, Dictionary<string, string> data)
{
return await RequestAsync("PUT", url, data);
}
public static async Task<string> PatchAsync(string url, Dictionary<string, string> data)
{
return await RequestAsync("PATCH", url, data);
}
public static async Task<string> DeleteAsync(string url, Dictionary<string, string> data)
{
return await RequestAsync("DELETE", url, data);
}
private static async Task<string> RequestAsync(string method, string url, Dictionary<string, string> data)
{
string dataString = JsonConvert.SerializeObject(data);
byte[] dataBytes = Encoding.UTF8.GetBytes(dataString);
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
request.ContentLength = dataBytes.Length;
request.ContentType = "application/json";
request.Method = method;
using(Stream requestBody = request.GetRequestStream())
{
await requestBody.WriteAsync(dataBytes, 0, dataBytes.Length);
}
using(HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync())
using(Stream stream = response.GetResponseStream())
using(StreamReader reader = new StreamReader(stream))
{
return await reader.ReadToEndAsync();
}
}
}
}
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