preferans-rating-js/lib/prefRating.js

nodejs rating for preferans

#!/usr/bin/env node

'use strict';
Object.defineProperty(exports, "__esModule", { value: true });
const math = require("mathjs");
const prefRatingPlayer_1 = require("./prefRatingPlayer");
const MAGIC = 2.8;
const _calcD = (p1, p2, bula) => Number(math.round(math
    .chain(p1.score)
    .subtract(p2.score)
    .divide(bula)
    .done(), 3));
const _calculateDs = (p1, p2, p3, bula) => ({
    a12: _calcD(p1, p2, bula),
    a13: _calcD(p1, p3, bula),
    a23: _calcD(p2, p3, bula),
});
const _calcT = (p1, p2) => Number(math.round(math
    .chain(p2.rating)
    .subtract(p1.rating)
    .multiply(MAGIC)
    .divide(100)
    .done(), 3));
const _calculateTs = (p1, p2, p3) => ({
    a12: _calcT(p1, p2),
    a13: _calcT(p1, p3),
    a23: _calcT(p2, p3),
});
const _calcN = (p1, p2, bula) => (p1.score > p2.score ? bula : p1.score < p2.score ? -bula : 0) / 100;
const _calculateNs = (p1, p2, p3, bula) => ({
    a12: _calcN(p1, p2, bula),
    a13: _calcN(p1, p3, bula),
    a23: _calcN(p2, p3, bula),
});
const _calcC = (c1, c2) => Number(math.round(math
    .chain(c1)
    .add(c2)
    .divide(2)
    .done()));
const _calculateChanges = (p1, p2, p3, bula) => {
    const D = _calculateDs(p1, p2, p3, bula);
    const T = _calculateTs(p1, p2, p3);
    const N = _calculateNs(p1, p2, p3, bula);
    const C12 = D.a12 + T.a12 + N.a12;
    const C13 = D.a13 + T.a13 + N.a13;
    const C23 = D.a23 + T.a23 + N.a23;
    return {
        c1: _calcC(C12, C13),
        c2: _calcC(-C12, C23),
        c3: _calcC(-C13, -C23),
    };
};
class PrefRating {
    constructor(p1, p2, p3, bula) {
        this._p1 = new prefRatingPlayer_1.default(p1.username, p1.rating, p1.score);
        this._p2 = new prefRatingPlayer_1.default(p2.username, p2.rating, p2.score);
        this._p3 = new prefRatingPlayer_1.default(p3.username, p3.rating, p3.score);
        this._bula = bula;
        const { c1, c2, c3 } = _calculateChanges(this._p1, this._p2, this._p3, this._bula);
        this._p1.change = c1;
        this._p2.change = c2;
        this._p3.change = c3;
    }
    get rating() {
        return {
            bula: this._bula,
            p1: this._p1.json,
            p2: this._p2.json,
            p3: this._p3.json,
        };
    }
}
exports.default = PrefRating;
//# sourceMappingURL=prefRating.js.map