Game.js

"use strict";
let Frame = require("./Frame");

const FRAMES_NUMBER = 10;

class Game {
    constructor() {
        this.currentFrame = 0;
        this.frames = [];
        for (let i=0; i<FRAMES_NUMBER; i++) {
            this.frames.push(new Frame());
        }
    }
    rollAll(framesListWithScores) {
        let parsedSuccessfully = false;
        try {
            if (!Array.isArray(framesListWithScores)) {
                framesListWithScores = JSON.parse(framesListWithScores);
            }
            if (Array.isArray(framesListWithScores)) {
                for(let i=0; i<framesListWithScores.length; i++) {
                    if (Array.isArray(framesListWithScores[i])) {
                        for (let j=0; j<framesListWithScores[i].length; j++) {
                            this.roll(framesListWithScores[i][j]);
                        }
                    }
                }
                parsedSuccessfully = true;
            }
        }
        catch (e) {
            console.log("Error parsing the list: "+e);
        }
        return parsedSuccessfully;
    }
    roll(pins) {
        this.frames[this.currentFrame].roll(pins);
        if (this.frames[this.currentFrame].areFrameRollsFinished()) {
            this._addStrikeBonusToPreviousFrameIfNecessary();
            this.currentFrame++;
        }
        else {
            this._addSpareBonusToPreviousFrameIsNecessary();
        }
    }
    score() {
        let totalScore = 0;
        for (let i=0; i<FRAMES_NUMBER; i++) {
            totalScore += this.frames[i].score();
        }
        return totalScore;
    }
    _addSpareBonusToPreviousFrameIsNecessary() {
        if (this.currentFrame > 0) {
            let previousFrame = this.currentFrame - 1;
            if (this.frames[previousFrame].isSpare()) {
                this.frames[previousFrame].bonus(this.frames[this.currentFrame].firstRoll)
            }
        }
    }
    _addStrikeBonusToPreviousFrameIfNecessary() {
        if (this.currentFrame > 0) {
            let previousFrame = this.currentFrame - 1;
            if (this.frames[previousFrame].isStrike()) {
                this.frames[previousFrame].bonus(this.frames[this.currentFrame].firstRoll + this.frames[this.currentFrame].secondRoll)
            }
        }
    }
}

module.exports = Game;