import { _decorator, AssetManager, Prefab } from 'cc'
import { Logger } from './Logger'

const { ccclass, property } = _decorator

@ccclass('PrefabLoader')
export default class PrefabLoader {
  private static isLoading: boolean = false

  public static loadPrefab(url: string, callback: Function) {
    if (this.isLoading) return
    this.isLoading = true
    AssetManager.instance.resources.load(
      url,
      Prefab,
      (error: Error, loadedResource) => {
        if (error) {
          Logger.warn(this, '载入Prefab失败, 原因:', url, error.message)
          return
        }
        if (!(loadedResource instanceof Prefab)) {
          Logger.warn(this, '你载入的不是Prefab, 你做了什么事?')
          return
        }
        callback(loadedResource)
        this.isLoading = false
      }
    )
  }
}