initial POC

internal/config/config.go

@@ -0,0 +1,35 @@
+package config
+
+import (
+	"git.asperti.com/paspo/mail-autoconfig/internal/myerrors"
+	"github.com/gookit/validate"
+	"github.com/spf13/viper"
+)
+
+type Config struct {
+	HttpPort int    `mapstructure:"PORT" validate:"required|int|min:1|max:65535"`
+	DBPath   string `mapstructure:"DB_PATH" validate:"required"`
+}
+
+var AppConfig Config
+
+func InitConfig() error {
+	var err error
+	viper.SetConfigType("env")
+	viper.AllowEmptyEnv(true)
+	viper.AutomaticEnv()
+
+	viper.SetDefault("PORT", 9000)
+	viper.SetDefault("DB_PATH", "./database.sqlite")
+
+	err = viper.Unmarshal(&AppConfig)
+	if err != nil {
+		return myerrors.ErrConfigParse
+	}
+
+	validation := validate.Struct(AppConfig)
+	if !validation.Validate() {
+		return myerrors.ErrConfigValidation
+	}
+	return nil
+}