Simple app to generate and automatically update FIDE rating lists.

The main target was to create simple app displaying interactive lists of players on chess club website.

Made in NodeJS with ExpressJS and MongoDB database. Because FIDE does not provide API, server is based on: https://github.com/xRuiAlves/fide-ratings-scraper/

Server gets and reads given config file (by FIDE_IDS variable in .env file) and provides the following addidtional endpoints:

• /rating-list/update - Protected by basic HTTP Auth. Username is set to admin and password is set in .env file (UPDATE_PASSWORD). If authorized, connects to database and refreshes current players' rating data. Returns result from database query in JSON. This endpoint need to be requested to update ratings info. FIDE updates their data once a month, so it is enough to make request only first day of the month. Personally I use https://cron-job.org for this purpose.
• /rating-list - Gets rating data from database in JSON file.

Made in ReactJS with Material UI. App displays additional player's information from FIDE website and rating change in last month and a year. Rating's changes are colored red or green depending on change direction.

App is pre-configured for launch on Heroku - heroku-postbuild is set to build react fronend properly.

CONNECTION_STRING=      // Connection string to MongoDB database. Personally, I recommend MongoDB Atlas.
FIDE_IDS=               // URL to *.json file containing FIDE IDs and names to replace (see below in section: Config file)
UPDATE_PASSWORD=        // Password entered to manually update list
DB_NAME=                // Name of MongoDB database
DB_COLLECTION_NAME=     // Name of collection in MongoDB database

File may be put somewhere else than the main app, to allow players list modification without the need of rebuilding the app. It has the following structure:

{
	"ids": [1503014,
            1132199,
            2900084
			],
	"replace" : [
		["Kaminski", "Kamiński"]
	]
}

• ids - Array of FIDE IDs of players on the list
• replace - Array of pairs containing name's part to be replaced by the second. The purpose is to correct FIDE mistakes or invalid diacritical marks in some languages. (Like in the screenshot below)

Jacek Nitychoruk