import { ILoadingTask } from "./LoadingMgr";


export class LoadTaskMgr {
    private  readonly tasks = new Map<string, () => ILoadingTask>();
    /**
     * 初始化任务管理器
     */
    public init(task: Record<string, () => ILoadingTask>) {
        // 注册所有任务
        Object.entries(task).forEach(([key, creator]) => {
            this.registerTask(key, creator);
        });
    }
    
    /**
     * 注册单个任务
     */
    private registerTask(key: string, creator: () => ILoadingTask) {
        this.tasks.set(key, creator);
    }

    /**
     * 获取任务
     */
    public getTask(key: string): ILoadingTask {
        const creator = this.tasks.get(key);
        return creator ? creator() : null;
    }

    /**
     * 获取所有任务
     */
    public getAllTasks(): ILoadingTask[] {
        return Array.from(this.tasks.values()).map(creator => creator());
    }
}