import {createLogger} from "@gongt/ts-stl-library/debug/create-logger";
import {LOG_LEVEL} from "@gongt/ts-stl-library/debug/levels";
import {Application, Router} from "express-serve-static-core";
import {expressWait} from "../../express/express-init";

const info = createLogger(LOG_LEVEL.INFO, 'express.provide');

export interface IExpressProvide {
	displayName?: string;
	
	__express_provide(app: Application|Router): void|Promise<any>;
}

export function provideWithExpress(app: Application|Router, provider: IExpressProvide) {
	const ret = provider.__express_provide(app);
	info('provideWithExpress(' + (provider.displayName || provider.constructor.name) + ')');
	
	if (ret instanceof Promise) {
		expressWait('provideWithExpress(' + (provider.displayName || provider.constructor.name) + ')', ret);
	}
}