class SummerCamp {


    constructor(organizer, location) {

        this.organizer = organizer;

        this.location = location;

        this.priceForTheCamp = { "child": 150, "student": 300, "collegian": 500 };

        this.listOfParticipants = [];

    }



    registerParticipant(name, condition, money) {

        let arrOfConditions = Object.keys(this.priceForTheCamp);

        let namesOfPart = this.listOfParticipants.map(obj => obj.name);

        if (!arrOfConditions.includes(condition)) {

           throw new Error("Unsuccessful registration at the camp.");



        } else if (namesOfPart.includes(name)) {

            return `The ${name} is already registered at the camp.`;

        } else if (this.priceForTheCamp[condition] > money) {

            return `The money is not enough to pay the stay at the camp.`;

        } else {

            this.listOfParticipants.push({ name: name, condition: condition, power: 100, wins: 0 });

            return `The ${name} was successfully registered.`;

        }

    }


    unregisterParticipant(name) {

        let namesOfPart = this.listOfParticipants.map(obj => obj.name);

        if (!namesOfPart.includes(name)) {

            throw new Error(`The ${name} is not registered in the camp.`);



        } else {

            this.listOfParticipants.forEach((obj, i) => obj.name === name ? this.listOfParticipants.splice(i, 1) : false);

            return `The ${name} removed successfully.`;

        }

    }



    timeToPlay(typeOfGame, participant1, participant2) {


        let namesOfPart = this.listOfParticipants.map(obj => obj.name);

        let part1Con = '';

        let part2Con = '';

        let powerPrPar1 = 0;

        let powerPrPar2 = 0;


        for (let el of this.listOfParticipants) {

            if (el.name === participant1) {

                part1Con = el.condition;

                powerPrPar1 = el.power;



            } else {

                part2Con = el.condition;

                powerPrPar2 = el.power;



            }

        }



        if (typeOfGame === 'WaterBalloonFights') {

            if (!namesOfPart.includes(participant1) || !namesOfPart.includes(participant2)) {

                 throw new Error(`Invalid entered name/s.`);



            } else if (part1Con !== part2Con) {

                throw new Error(`Choose players with equal condition.`);



            }



            if (powerPrPar1 > powerPrPar2) {

                this.listOfParticipants.forEach(obj => obj.name === participant1 ? obj.wins++ : false);

                return `The ${participant1} is winner in the game ${typeOfGame}.`

            } else if (powerPrPar1 < powerPrPar2) {

                this.listOfParticipants.forEach(obj => obj.name === participant2 ? obj.wins++ : false);

                return `The ${participant2} is winner in the game ${typeOfGame}.`

            } else {

                return `There is no winner.`;

            }



        } else if (typeOfGame === 'Battleship') {

            if (!namesOfPart.includes(participant1)) {

                throw new Error(`Invalid entered name/s.`);



            }

            this.listOfParticipants.forEach(obj => obj.name === participant1 ? obj.power += 20 : false);

            return `The ${participant1} successfully completed the game ${typeOfGame}.`;

        }

    }


    toString() {

        let arr = this.listOfParticipants;

        let numberOfParticipants = arr.length;

        let resultArr = [`${this.organizer} will take ${numberOfParticipants} participants on camping to ${this.location}`];

        arr.sort((a, b) => b.wins - a.wins);

        for (let obj of arr) {

            let cur = `${obj.name} - ${obj.condition} - ${obj.power} - ${obj.wins}`;

            resultArr.push(cur);

        }

        return resultArr.join('\n');

    }


}