re-write with std usage of net/http

internal/config/config.go

@@ -0,0 +1,28 @@
+package config
+
+import (
+	"os"
+)
+
+type Config struct {
+	Port        string
+	StaticDir   string
+	Environment string
+}
+
+var AppConfig Config
+
+func Load() {
+	AppConfig = Config{
+		Port:        getEnv("PORT", "7878"),
+		StaticDir:   getEnv("STATIC_DIR", "static"),
+		Environment: getEnv("ENVIRONMENT", "development"),
+	}
+}
+
+func getEnv(key, fallback string) string {
+	if value, ok := os.LookupEnv(key); ok {
+		return value
+	}
+	return fallback
+}