add enviroment variable for golang beckend close #6

backend/env/env.go

@@ -0,0 +1,59 @@
+package env
+
+import (
+	"os"
+	"strconv"
+	"strings"
+
+	"github.com/joho/godotenv"
+)
+
+type EnvKey string
+
+const (
+	Env           EnvKey = "ENV"
+	GinMode       EnvKey = "GIN_MODE"
+	Debug         EnvKey = "DEBUG"
+	PrivKey       EnvKey = "PRIVKEY"
+	Fullchain     EnvKey = "FULLCHAIN"
+	Https         EnvKey = "HTTPS"
+	Url           EnvKey = "URL"
+	Port          EnvKey = "PORT"
+	WorkingDir    EnvKey = "WORKING_DIR"
+	Spa           EnvKey = "SPA"
+	AccessSecret  EnvKey = "ACCESS_SECRET"
+	RefreshSecret EnvKey = "REFRESH_SECRET"
+)
+
+const (
+	EnvDevelopment = "development"
+	EnvProduction  = "Prodction"
+)
+
+func (key EnvKey) GetValue() string {
+	return os.Getenv(string(key))
+}
+
+func (key EnvKey) GetBoolValue() bool {
+	return strings.ToLower(os.Getenv(string(key))) == "true"
+}
+
+func (key EnvKey) GetUIntValue() uint {
+	value, err := strconv.ParseUint(os.Getenv(string(key)), 10, 32)
+	if err != nil {
+		return 0
+	}
+	return uint(value)
+}
+
+func Load(file string) error {
+	return godotenv.Load(file)
+}
+
+func InDevelopmentMode() bool {
+	return Env.GetValue() == EnvDevelopment
+}
+
+func InDebugMode() bool {
+	return strings.ToLower(Debug.GetValue()) == "true"
+}