import DiSupplier from "./DiSupplier";
import {
    BEAN_META,
    DEFAULT_META_KEY,
    META_INJECTOR, META_KEY_TYPE
} from "../@types/DynamicInject";
import {logger} from "../logger/Logger";

export class ScopeDecoratorGenerator {

    public diSupplier:DiSupplier
    public metaData:BEAN_META = {
        key: DEFAULT_META_KEY,
        injectTargets:[]
    }
    public target:any;
    constructor(mainMetaKey:META_KEY_TYPE, _diSupplier:DiSupplier, _target: any) {
        if(mainMetaKey) this.metaData.key = mainMetaKey;
        this.diSupplier = _diSupplier;
        this.target = _target;
    }

    public generateMetaData(flag:string, propType:any, paramName: string, index?: number, args?:any[]):ScopeDecoratorGenerator
    {
        this.metaData.type = propType;
        this.metaData.target = { name: paramName, index: index }
        this.metaData.propertyKey = Symbol(`${flag}_${this.target.constructor.name}_${paramName}${index?`${index}`:''}`)

        if(!args)
        {
            let injertTarget:META_INJECTOR = {origin:undefined, runner:undefined}
            injertTarget.runner = this.diSupplier.requestScopeInjectSupplier()
            this.metaData.injectTargets.push(injertTarget)
        }
        else
        {
            for (let argIdx = 0; argIdx < args.length; argIdx++) {
                let argParam: any = args[argIdx];
                let injertTarget:META_INJECTOR = {origin:argParam, runner:undefined}
                injertTarget.runner = this.diSupplier.requestScopeInjectSupplier(argParam)
                this.metaData.injectTargets.push(injertTarget)
            }
        }

        return this;
    }

    public appendMetadata()
    {
        if(!this.metaData || !this.target) {
            logger.error("generate metadata error in @SCOPE")
            return;
        }

        Reflect.defineMetadata(this.metaData.propertyKey, this.metaData, this.target, this.metaData.key);
    }
}