class Character {
    constructor(system) {
        this.#system = system;
    }

    #system;
    #characters;
    #characterPullCount;
    #rateableKnife;
    #rate;
    #pipe = [];
    #uniqueWaTaShi;
    #propertyWeight;
    #talentWeight

    initial({characters}) {
        this.#characters = characters;
        const uniqueWaTaShi = localStorage.getItem('uniqueWaTaShi');
        if(uniqueWaTaShi != null || uniqueWaTaShi != 'undefined')
            this.#uniqueWaTaShi = JSON.parse(uniqueWaTaShi);
        return this.count;
    }

    get count() {
        return Object.keys(this.#characters).length;
    }

    config({
        characterPullCount = 3,
        rateableKnife = 10,
        propertyWeight,
        talentWeight,
    } = {}) {
        this.#characterPullCount = characterPullCount;
        this.#rateableKnife = rateableKnife;
        this.#propertyWeight = propertyWeight;
        this.#talentWeight = talentWeight;
    }

    get #unique() {
        if(this.#uniqueWaTaShi) {
            return this.#system.clone(this.#uniqueWaTaShi);
        }

        const now = Date.now();
        this.#pipe.push(now);
        if(this.#pipe.length < 10) return null;
        const time = this.#pipe.shift();
        if(now - time > 10000) return null;
        return {unique: true, generate: false};
    }

    set #unique(data) {
        this.#uniqueWaTaShi = this.#system.clone(data);
        this.#uniqueWaTaShi.unique = true;
        this.#uniqueWaTaShi.generate = true;
        localStorage.setItem(
            'uniqueWaTaShi',
            JSON.stringify(this.#uniqueWaTaShi)
        );
    }

    get #weightRandom() {
        return this.#system.function(this.#system.Function.UTIL).weightRandom;
    }

    generateUnique() {
        if(this.#uniqueWaTaShi) return this.#unique;
        const weightRandom = this.#weightRandom;
        const {CHR, INT, STR, MNY} = this.#system.PropertyTypes;

        this.#unique = {
            property: {
                [CHR]: weightRandom(this.#propertyWeight),
                [INT]: weightRandom(this.#propertyWeight),
                [STR]: weightRandom(this.#propertyWeight),
                [MNY]: weightRandom(this.#propertyWeight),
            },
            talent: this.#system
                .request(this.#system.Module.TALENT)
                .random(weightRandom(this.#talentWeight)),
        }

        return this.#unique;
    }

    random() {
        return {
            unique: this.#unique,
            normal: this.#rateable(),
        }
    }

    #rateable() {
        if(!this.#rate) {
            this.#rate = {};
            for(const id in this.#characters) {
                this.#rate[id] = 1;
            }
        }

        const r = [];
        const weightRandom = this.#weightRandom;
        new Array(this.#characterPullCount)
            .fill(0)
            .forEach(()=>{
                r.push(
                    weightRandom(Object
                        .keys(this.#rate)
                        .filter(id=>!r.includes(id))
                        .map(id=>([id,this.#rate[id]]))
                    )
                )
            });

        let min = Infinity;
        for(const id in this.#rate) {
            if(r.includes(id)) {
                min = Math.min(min, this.#rate[id]);
                continue;
            }
            min = Math.min(min, ++ this.#rate[id]);
        }
        if(min > this.#rateableKnife) {
            for(const id in this.#rate) {
                this.#rate[id] -= this.#rateableKnife;
            }
        }
        return r.map(id=>this.#system.clone(this.#characters[id]));
    }

}

export default Character;