import { _decorator,Constructor, Node } from 'cc';
import { UIController } from '../easy_ui_framework/UIController';

// 打包之后有问题不支持名称注入
export class UIControllerAnnotation {

   
    private static initMap = new Map<any, { bundleName?: any, path?: any,layer?:number }>()
    private static initElement = new Map<any, Map<string,{type:any,prefix?:string,path?:string}>>()

    static UI(param: { bundleName?: any, path: any } | string) {
        return function (target: Constructor) {
            // 首字母小写注入
            if(typeof param == 'string'){
                UIControllerAnnotation.initMap.set(target,{path:param})
            }else{
                UIControllerAnnotation.initMap.set(target,param)
            }
            

        }
    }
    static getElement(target:Constructor){
        // 这里还要找到父类的结果
        if(!target){
            return null
        }
        if(target == UIController){
            return UIControllerAnnotation.initElement.get(target) 
        }
        let res = new Map
        let parent = Object.getPrototypeOf(target)
        let parentMap = this.getElement(parent)
        let myMap = UIControllerAnnotation.initElement.get(target) 
        if(parentMap){
            parentMap.forEach((vlaue,key)=>res.set(key,vlaue))
        }
        if(myMap){
            myMap.forEach((vlaue,key)=>res.set(key,vlaue))
        }
        return res
  }

    static getUI(ui:Constructor){
         return UIControllerAnnotation.initMap.get(ui) 
   }
   static element(type: Constructor|{type:any,prefix?:string,path?:string} = Node) {
       
    let res: PropertyDecorator = function (target:Object, prop: string) {
        // 首字母小写注入
        let map =UIControllerAnnotation.initElement.get(target.constructor)
        if(!map){
            map= new Map
            UIControllerAnnotation.initElement.set(target.constructor,map)
        }
        if(map.get(prop)){
            console.warn("存在同名注入，请检查代码，prop==>",prop)
        }
        if(typeof type == 'object'){
            map.set(prop,type)
        }else{
            map.set(prop,{type:type,prefix:'#'})
        }
        
    }
    return res

}
  


}