camping

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) {
        if (!this.priceForTheCamp.hasOwnProperty(condition)) {
            throw new Error('Unsuccessful registration at the camp.');
        }

        if (this._findParticipant(name)) {
            return `The ${name} is already registered at the camp.`;
        }
        if (money < this.priceForTheCamp[condition]) {
            return `The money is not enough to pay the stay at the camp.`;
        }
        this.listOfParticipants.push({ name, condition, power: 100, wins: 0 });
        return `The ${name} was successfully registered.`;
    }
    unregisterParticipant(name) {
        let idx = this._findParticipantsIdx(name);
        if (idx === -1) {
            throw new Error(`The ${name} is not registered in the camp.`);
        }
        this.listOfParticipants.splice(idx, 1);
        return `The ${name} removed successfully.`;
    }
    timeToPlay(typeOfGame, participant1, participant2) {
        let player1 = this._findParticipant(participant1);
        let player2 = this._findParticipant(participant2);
        if (!player1 || (!player2 && participant2 !== undefined)) {
            throw new Error(`Invalid entered name/s.`);
        }
        if (
            participant2 !== undefined &&
            player1.condition !== player2.condition
        ) {
            throw new Error(`Choose players with equal condition.`);
        }

        if (participant2 === undefined) {
            player1.power += 20;
            return `The ${player1.name} successfully completed the game ${typeOfGame}.`;
        }
        let winner = '';
        if (player1.power > player2.power) {
            winner = player1.name;
            player1.wins++;
        } else if (player1.power < player2.power) {
            winner = player2.name;
            player2.wins++;
        }
        if (!winner) {
            return `There is no winner.`;
        }
        return `The ${winner} is winner in the game ${typeOfGame}.`;
    }
    toString() {
        let result = [
            `${this.organizer} will take ${this.listOfParticipants.length} participants on camping to ${this.location}`,
        ];
        this.listOfParticipants
            .sort((a, b) => b.wins - a.wins)
            .forEach((p) =>
                result.push(
                    `${p.name} - ${p.condition} - ${p.power} - ${p.wins}`
                )
            );

        return result.join('\n');
    }

    _findParticipantsIdx(name) {
        return this.listOfParticipants.findIndex((p) => p.name === name);
    }
    _findParticipant(name) {
        return this.listOfParticipants.find((p) => p.name === name);
    }
}