feat(initialize): Implement config

.env.example

 DATABASE_URL=
+APP_ENVIRONMENT=development

cmd/app-1/main.go

@@ -7,6 +7,7 @@ import (
 	"github.com/gofiber/fiber/v3"
 	"github.com/gofiber/fiber/v3/middleware/healthcheck"
 	"github.com/gofiber/fiber/v3/middleware/logger"
+	"github.com/joho/godotenv"
 	"gorm.io/driver/postgres"
 	"gorm.io/gorm"
 	"ui.ac.id/dtd/go-webserver-boilerplate/internal/handler"
@@ -14,8 +15,45 @@ import (
 	"ui.ac.id/dtd/go-webserver-boilerplate/internal/service"
 )
 
+type Config struct {
+	DatabaseUrl    string
+	AppEnvironment string
+	Port           string
+}
+
+func initConfig() Config {
+	environment := os.Getenv("APP_ENVIRONMENT")
+
+	if environment == "" {
+		environment = "production"
+	}
+
+	if environment == "development" {
+		err := godotenv.Load()
+
+		if err != nil {
+			panic(err)
+		}
+	}
+
+	port := os.Getenv("PORT")
+
+	if port == "" {
+		port = "8000"
+	}
+
+	log.Printf("Environment: %s", environment)
+
+	return Config{
+		DatabaseUrl:    os.Getenv("DATABASE_URL"),
+		AppEnvironment: environment,
+		Port:           port,
+	}
+}
+
 func main() {
-	db, err := gorm.Open(postgres.Open(""), &gorm.Config{})
+	config := initConfig()
+	db, err := gorm.Open(postgres.Open(config.DatabaseUrl), &gorm.Config{})
 
 	if err != nil {
 		log.Fatal(err)
@@ -43,4 +81,6 @@ func main() {
 	user := v1.Group("/user")
 	user.Get("/:id", userHandler.GetUserDetail)
 	user.Get("/", userHandler.GetUserList)
+
+	app.Listen(":" + config.Port)
 }

go.mod

@@ -15,6 +15,7 @@ require (
 	github.com/jackc/puddle/v2 v2.2.2 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/jinzhu/now v1.1.5 // indirect
+	github.com/joho/godotenv v1.5.1 // indirect
 	github.com/klauspost/compress v1.17.11 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect

go.sum

@@ -23,6 +23,8 @@ github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD
 github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
 github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ=
 github.com/jinzhu/now v1.1.5/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/klauspost/compress v1.17.11 h1:In6xLpyWOi1+C7tXUUWv2ot1QvBjxevKAaI6IXrJmUc=
 github.com/klauspost/compress v1.17.11/go.mod h1:pMDklpSncoRMuLFrf1W9Ss9KT+0rH90U12bZKk7uwG0=
 github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=