udemy-go-microservices/mail-service/cmd/api/main.go

package main

import (
	"fmt"
	"log"
	"net/http"
	"os"
	"strconv"

	"github.com/tsawler/toolbox"
)

const webPort = "80"

type Config struct {
	Host       string
	Port       int
	UserName   string
	Password   string
	Encryption string
	Tools      toolbox.Tools
	Mailer     Mail
}

func main() {
	app := Config{
		Mailer: createMail(),
	}

	log.Printf("Starting mail service on port %s\n", webPort)

	// define http server
	srv := &http.Server{
		Addr:    fmt.Sprintf(":%s", webPort),
		Handler: app.routes(),
	}

	err := srv.ListenAndServe()
	if err != nil {
		log.Panic(err)
	}
}

func createMail() Mail {
	port, _ := strconv.Atoi(os.Getenv("MAIL_PORT"))
	return Mail{
		Domain:     os.Getenv("MAIL_DOMAIN"),
		Host:       os.Getenv("MAIL_HOST"),
		Port:       port,
		Username:   os.Getenv("MAIL_USERNAME"),
		Password:   os.Getenv("MAIL_PASSWORD"),
		Encryption: os.Getenv("MAIL_ENCRYPTION"),
		FromName:   os.Getenv("FROM_NAME"),
		FromAddr:   os.Getenv("FROM_ADDR"),
	}
}