C# Rocks!

Welcome to the Wizkids C# test! The test is inspired by one of our products (AppWriter) which helps people with reading/writing troubles by enabling them to read text out load and get word suggestions (predictions) while typing.

Predictions are word completions based on the input text, for example: If the input text is I like ca the predictions could be cars, cats and cake.

The test requires you to create a small front-end and back-end that implements the word prediction functionality with results from a custom dictionary and our word prediction web service.

If you encounter any unexpected issues please contact us at srs AT wizkids.dk and we will get back to you ASAP.

Scope

We expect a simply structured HTML/CSS/JS/C# project with good readability. Design and UX is not a major consideration - keeping it simple is fine.

We expect a well-versed developer to be able to complete the tasks within a couple of hours.

While a simple test project you should treat it as a project that should run in production in a business environment.

Back-end tasks

1. Write a client for the word predictions web service.

2. Write a service for fetching words from the custom dictionary.

3. Write a web API for your front-end.

The API should perform the following tasks:

1. Listen for HTTP requests from the front-end.
2. Fetch word predictions from the word predictions web service based on input from the front-end (using the client from task #1).
3. Fetch custom dictionary words based on input from the front-end (using the service from task #2).
4. Send the two lists of words as a JSON result in the HTTP response.

Front-end tasks

1. Write HTML/CSS for displaying a <textarea> and two lists of word prediction results (word prediction web service and custom dictionary).

2. Write a JavaScript function that performs a web request to fetch word predictions from your back-end API.

3. On every keypress event in the <textarea> fetch word predictions based on the text value and display the results in the two lists.

Miscellaneous tasks

1. Generate a token for use with the word predictions web service at https://services.lingapps.dk/misc/CSharpJSRocks.

2. Add your code in a Git project on GitHub and submit the link at https://services.lingapps.dk/misc/CSharpJSRocks.

(OPTIONAL, but strongly recommended) Also add a link to one of your C# projects (in which you've been a major contributor) - Git repository preferred.

Custom dictionary description

The custom dictionary is implemented as an SQLite 3 database (Dictionary.db). It contains a Wordstable with the columns Id and Value.

The database is not encrypted/does not require a password.

If you have issues downloading the database file directly (GitHub some times display a 404 error), try cloning the project instead.

Word predictions web service description

URL

https://services.lingapps.dk/misc/getPredictions

Authorization

Header: Authorization: Bearer [TOKEN] (token generated in Miscellaneous task #1)

Parameters

• locale: String, the language in which the predictions should be computed. Valid values are da-DK and en-GB.
• text: String, the text from which to compute the predictions.

Response

JSON encoded array of strings ordered by prediction probability (descending), for example: ["cars", "cats", "cake"]

Example

Request

GET /misc/getPredictions?locale=en-GB&text=I%20like%20ca HTTP/1.1
Host: services.lingapps.dk
Authorization: Bearer MjAxOS0wMS0wMQ==.dGVzdEBleGFtcGxlLmNvbQ==.MjExMWMyYjdjZGY3YTU3MmU4MTA5OWY0MDgyMmM0OTk=
Connection: Close

Response

HTTP/1.1 200 OK
Content-Length: 34
Connection: close
Content-Type: application/json

[
    "cars",
    "cats",
    "cake"
]