lotto-draw/dist/createLotto.js

A simple tool used to pick random elements from a mutable collection of weighted participants

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.createLotto = void 0;
var Lotto_1 = require("./Lotto");
/**
 * A function that creates and returns a Lotto instance.
 * @param participantsOrOptions An array of initial participants or options relating to the creation of a Lotto instance.
 * @returns A new Lotto instance.
 */
function createLotto(participantsOrOptions) {
    // If no initial participants or lotto options were provided as an argument then we can just return a new lotto instance now.
    if (!participantsOrOptions) {
        return new Lotto_1.Lotto();
    }
    // Check whether we were provided with an array of initial participants or a lotto options object.
    if (Array.isArray(participantsOrOptions)) {
        // We are dealing with a pre-defined array of participants.
        var participants = participantsOrOptions;
        var lotto_1 = new Lotto_1.Lotto();
        // If the lotto participants have been defined upfront then we will need to add them all to our lotto instance now.
        participants.forEach(function (_a) {
            var participant = _a[0], tokens = _a[1];
            return lotto_1.add(participant, tokens);
        });
        // Return the Lotto instance.
        return lotto_1;
    }
    else {
        // We are dealing with some lotto options.
        var random = participantsOrOptions.random, participants = participantsOrOptions.participants;
        // Create a Lotto instance passing the custom RNG function to use in place of Math.random() (which could be undefined).
        var lotto_2 = new Lotto_1.Lotto(random);
        // If the lotto participants have been defined upfront as part of the options then we will need to add them all to our lotto instance now.
        if (participants) {
            participants.forEach(function (_a) {
                var participant = _a[0], tokens = _a[1];
                return lotto_2.add(participant, tokens);
            });
        }
        // Return the Lotto instance.
        return lotto_2;
    }
}
exports.createLotto = createLotto;