import {
    _decorator,
    Asset,
    AssetManager,
    assetManager,
    Component,
    error,
    Node,
    Prefab,
    resources,
    SpriteFrame
} from 'cc';

const {ccclass, property} = _decorator;

@ccclass('LoadUtils')
export class LoadUtils {

    public static loadSpriteFrame(url: string, succ: Function, fail: Function) {
        resources.load(url, SpriteFrame, (err, asset) => {
            if (err) {
                console.log(err);
            } else {
                succ(asset)
            }
        });
    }

    public static loadPrefab(url: string, succ: Function, fail: Function) {
        resources.load(url, Prefab, (err, asset) => {
            if (err) {
                console.log(err);
            } else {
                succ(asset)
            }
        });
    }

    public static loadBundleRes(bundleName: string, url: string, call?: Function, caller?: any, assetType?: typeof Asset) {
        let tmpBundle = assetManager.getBundle(bundleName);

        if (tmpBundle) {
            tmpBundle.load(url, assetType, (err: Error, asset: any) => {
                if (err) {
                    console.log("加载资源异常：", url, err);
                } else {
                    if (call) call.call(caller, asset);
                }
            });
            return;
        }
        assetManager.loadBundle(bundleName, (err: Error, bundle: AssetManager.Bundle) => {
            if (bundle) {
                bundle.load(url, assetType, (err: Error, asset: any) => {
                    if (!err) {
                        if (call) call.call(caller, asset);
                    } else {
                        console.log("加载资源异常：", url, err);
                    }
                })
            } else {
                console.log("加载", bundle, "分包出错", err);
            }
        })
    }

    /**从分包中加载图片 */
    public static loadBundleSpriteFrame(bundleName: string, url: string, call?: Function, caller?: any) {
        this.loadBundleRes(bundleName, url, call, caller, SpriteFrame);
    }

    /**从分包中加载预制体 */
    public static loadBundlePrefab(bundleName: string, url: string, call?: Function, caller?: any) {
        this.loadBundleRes(bundleName, url, call, caller, Prefab);
    }
}