import { Prefab, resources } from 'cc';
import { GameConstants } from '../common/Constants';

export class SpineManager {
    private _cache: Map<string, Prefab> = new Map();

    async load(spinePath: string): Promise<Prefab> {
        if (this._cache.has(spinePath)) {
            return this._cache.get(spinePath)!;
        }

        const prefab = await this._load(spinePath);
        this._cache.set(spinePath, prefab);
        return prefab;
    }

    private _load(path: string): Promise<Prefab> {
        return new Promise((resolve, reject) => {
            resources.load(path, Prefab, (err, prefab) => {
                err ? reject(err) : resolve(prefab);
            });
        });
    }

    release(spinePath: string) {
        if (this._cache.has(spinePath)) {
            resources.release(spinePath);
            this._cache.delete(spinePath);
        }
    }

    // 加载英雄资源
    async loadHero(name: string): Promise<Prefab> {
        const path = `${GameConstants.SPINE.HERO}/${name}`;
        return this.load(path);
    }
}