tankionline.js/src/values.js

An-easy-to use wrapper that fetches player ratings for Tanki Online

module.exports = class Values {
    /**
     * @param {boolean} current value
     * @param {number} old value
     */
    constructor(current, old) {
        if (typeof current === 'undefined') throw new Error('Please specify a current value');
        if (typeof old === 'undefined') throw new Error('Please specify an old value');
        if (typeof current !== 'number') throw new Error('current value is not a Number')
        if (typeof old !== 'number') throw new Error('old value is not a Number')
        if (current < -1) throw new Error('current value must be >= -1')
        if (old < -1) throw new Error('old value must be >= -1')
        this.positions = [current, old]
    }


    /**
     * Returns current and old values and arrow.
     */
    async calc() {
        let arrow = null;
        if (this.positions[0] > this.positions[1]) {
            arrow = "▲";
        } else if (this.positions[0] < this.positions[1]) {
            arrow = "▼";
        };

        return {
            current: this.positions[0] + 1 ? this.positions[0] : 0,
            old: this.positions[1] + 1 ? this.positions[1] : 0,
            arrow: arrow
        }
    }
}