class AdmiralCounter {
    constructor(configuration) {
        this.entities = Object.entries(configuration);
        this.admiralCounters = {};
    }

    increaseCounter(ids) {
        const { typeID, parentEntityTypeID } = ids;
        const id = `${typeID}_${parentEntityTypeID}`;

        if (!this.admiralCounters[id]) this.admiralCounters[id] = { childKilledCount: 1, admiralAliveCount: 0 };
        else this.admiralCounters[id].childKilledCount++;

        const thresholds = this.entities.find(e => parseInt(e[0]) === typeID);
        if (!thresholds) return;
      
        const threshold = thresholds[1][parentEntityTypeID];
        if (!threshold) return;
        
        const counter = this.admiralCounters[id];
        if (counter.childKilledCount === threshold.childToBeKilledCount) {
            counter.childKilledCount = 0;

            if (counter.admiralAliveCount < threshold.maximumAdmiralCount) {
                counter.admiralAliveCount++;
                return true;
            };
        };  

        return false;
    }

    descreaseAdmiralCount(id) {
        const counter = this.admiralCounters[id];
        if (counter) counter.admiralAliveCount--;
    }
};

module.exports = AdmiralCounter;