import { ModuleMetadata, Type } from '@nestjs/common/interfaces';
import { MailDataRequired } from '@sendgrid/helpers/classes/mail';

export interface SendGridModuleOptions {
  apiKey: string;
  defaultMailData?: MailDataRequired;
  substitutionWrappers?: { left: string; right: string }
}

export interface SendGridOptionsFactory {
  createSendGridOptions():
    | Promise<SendGridModuleOptions>
    | SendGridModuleOptions;
}

export interface SendGridModuleAsyncOptions extends Pick<ModuleMetadata, 'imports'> {
  inject?: any[];
  useClass?: Type<SendGridOptionsFactory>;
  useExisting?: Type<SendGridOptionsFactory>;
  useFactory?: (...args: any[]) => Promise<SendGridModuleOptions> | SendGridModuleOptions;
}