// app.module.ts
import { Module } from "@nestjs/common";
import { GeoIP2Module } from "nest-geoip2";
import { join } from "path";

import { AppController } from "./app.controller.ts";

@Module({
  imports: [
    GeoIP2Module.registerRender(join(process.cwd(), "GeoLite2-City.mmdb")),
  ],
  controllers: [AppController],
})
export class AppModule {}

// app.controller.ts
import { Controller, Get, Ip } from "@nestjs/common";
import { ReaderModel } from "nest-geoip2";

@Controller()
export class AppController {
  public constructor(private readonly readerModel: ReaderModel) {
    return this;
  }

  @Get("ip")
  public async ip(@Ip() ip: string) {
    return this.readerModel.city(ip);
  }
}