export class JSONSet<T extends Object> {
    constructor(private readonly items: Set<string> = new Set()) {}

    public add(item: T): void {
        const itemJson = JSON.stringify(item, Object.keys(item).sort());
        this.items.add(itemJson);
    }

    public has(item: T): boolean {
        const itemJson = JSON.stringify(item, Object.keys(item).sort());
        return this.items.has(itemJson);
    }

    public delete(item: T): boolean {
        const itemJson = JSON.stringify(item, Object.keys(item).sort());
        return this.items.delete(itemJson);
    }

    public clear(): void {
        this.items.clear();
    }

    public size(): number {
        return this.items.size;
    }
}

export class JSONHashMap<T extends Object, R extends Object> {
    constructor(private readonly map: Map<string, R> = new Map()) {}

    public set(key: T, value: R): void {
        const keyJson = JSON.stringify(key, Object.keys(key).sort());
        this.map.set(keyJson, value);
    }

    public get(key: T): R | undefined {
        const keyJson = JSON.stringify(key, Object.keys(key).sort());
        return this.map.get(keyJson);
    }

    public has(key: T): boolean {
        const keyJson = JSON.stringify(key, Object.keys(key).sort());
        return this.map.has(keyJson);
    }

    public keys(): T[] {
        return Array.from(this.map.keys()).map((x) => JSON.parse(x) as T);
    }

    public delete(key: T): boolean {
        const keyJson = JSON.stringify(key, Object.keys(key).sort());
        return this.map.delete(keyJson);
    }

    public clear(): void {
        this.map.clear();
    }

    public size(): number {
        return this.map.size;
    }
}