import express from 'express'


export type CustomExpressFunction = (app: ReturnType<typeof express>, route: express.Router, expressImport: typeof express) => {
    app: ReturnType<typeof express>, router: express.Router, expressImport: typeof express
}

export async function getCustomExpress(): Promise<ReturnType<CustomExpressFunction>> {
    const app = express()
    const router = express.Router()

    return import('@@/custom/express' as any).then(
        (r: { custom?: CustomExpressFunction  } | undefined) => {
            if (r?.custom !== undefined) {
                return r.custom(app, router, express)
            }

            return ({ app, router, expressImport: express })
        },
        () => ({ app, router, expressImport: express })
    )
}