import { ConfigService } from "@nestjs/config";
import { HandlebarsAdapter } from "@nestjs-modules/mailer/dist/adapters/handlebars.adapter";
import { MailerAsyncOptions } from "@nestjs-modules/mailer/dist/interfaces/mailer-async-options.interface";

export function mailerConfig(): MailerAsyncOptions {
  return {
    inject: [ConfigService],
    useFactory: (configService: ConfigService) => ({
      transport: {
        host: configService.getOrThrow<string>("SMTP_HOST"),
        port: configService.getOrThrow<number>("SMTP_PORT"),
        secure: false,
        auth: {
          user: configService.getOrThrow<string>("SMTP_USER"),
          pass: configService.getOrThrow<string>("SMTP_PASS"),
        },
      },
      defaults: {
        from: configService.getOrThrow<string>("MAIL_FROM"),
      },

      template: {
        dir: process.cwd() + "/src/templates",
        adapter: new HandlebarsAdapter(),
        options: {
          strict: true,
        },
      },
    }),
  };
}