improve config setup

improve config setup

config/config.go

@@ -0,0 +1,28 @@
+package config
+
+import (
+	"os"
+
+	"github.com/joho/godotenv"
+	"github.com/labstack/gommon/log"
+)
+
+type Config map[string]string
+
+var DefaultConfig = Config{
+	"PORT": "8000",
+}
+
+func NewConfig() func(string) string {
+	_ = godotenv.Load()
+	log.Info("loaded env variables")
+
+	return func(key string) string {
+		if value := os.Getenv(key); value != "" {
+			return value
+		} else {
+			log.Warnf("no value found for %s using defaults", key)
+			return DefaultConfig[key]
+		}
+	}
+}

main.go

@@ -11,7 +11,6 @@ import (
 	"strings"
 
 	"github.com/getsentry/sentry-go"
-	"github.com/joho/godotenv"
 	"gorm.io/driver/postgres"
 	"gorm.io/gorm"
 
@@ -28,9 +27,8 @@ var static embed.FS
 
 func main() {
 	ctx := context.Background()
-	_ = godotenv.Load()
 
-	if err := run(ctx, os.Getenv); err != nil {
+	if err := run(ctx, config.NewConfig()); err != nil {
 		fmt.Fprintf(os.Stderr, "%s\n", err)
 		os.Exit(1)
 	}