url-shortener/main.go

package main

import (
	"encoding/json"
	"fmt"
	"github.com/joho/godotenv"
	"net/http"
)

type ShorterRequest struct {
	Url string
}

func main() {
	envError := godotenv.Load()
	if envError != nil {
		panic("Error loading .env file")
	}

	router := http.NewServeMux()

	router.HandleFunc("GET /", func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("Hello World"))
	})

	router.HandleFunc("POST /shorten", func(w http.ResponseWriter, r *http.Request) {
		requestData := ShorterRequest{}
		err := json.NewDecoder(r.Body).Decode(&requestData)
		if err != nil {
			fmt.Println(err)
			panic(err)
		}

		w.Write([]byte(requestData.Url))
	})

	server := http.Server{Addr: ":3000", Handler: router}

	fmt.Println("URL Shortener is running on :3000")

	err := server.ListenAndServe()
	if err != nil {
		return
	}
}