import { Request } from 'express';
import { Controller } from '@nestjs/common/interfaces';

export interface ControllerClass extends Controller {
  name: string;
}

export type ControllerMethod = (...args: any[]) => Promise<any> | any;

export interface Query {
  [key: string]: any;
}
export interface Params {
  [key: string]: string;
}

export interface ReservedQuery {
  signed?: string;
  expirationDate?: string;
}

type SignedQuery = Query & ReservedQuery;

type Not<T> = {
  [Key in keyof T]?: never;
};

// Type guard for reserved key, when user pass in the query a key-clash will not happen
type NotReservedQuery = Query & Not<ReservedQuery>;

export interface RequestWithSignature extends Request {
  query: SignedQuery;
}

export interface GenerateUrlFromControllerArgs {
  controller: ControllerClass;
  controllerMethod: ControllerMethod;
  query?: Query;
  params?: Params;
}

export interface GenerateUrlFromPathArgs {
  relativePath: string;
  query?: Query;
  params?: Params;
}

export interface SignControllerUrlArgs {
  controller: ControllerClass;
  controllerMethod: ControllerMethod;
  expirationDate?: Date;
  query?: NotReservedQuery;
  params?: Params;
}

export interface SignUrlArgs {
  relativePath: string;
  expirationDate?: Date;
  query?: NotReservedQuery;
  params?: Params;
}

export interface IsSignatureValidArgs {
  protocol: string;
  host: string;
  routePath: string;
  query: SignedQuery;
}