first commit

internal/config/config.go

@@ -0,0 +1,29 @@
+package config
+
+import (
+	"github.com/pkg/errors"
+
+	"github.com/kelseyhightower/envconfig"
+)
+
+// Config represents the application configuration.
+type Config struct {
+	API struct {
+		Port         int `envconfig:"API_PORT" default:"3000"`
+		ReadTimeout  int `envconfig:"API_READ_TIMEOUT" default:"7"`
+		WriteTimeout int `envconfig:"API_WRITE_TIMEOUT" default:"5"`
+		IdleTimeout  int `envconfig:"API_IDLE_TIMEOUT" default:"5"`
+		Timeout      int `envconfig:"API_TIMEOUT" default:"5"`
+	}
+}
+
+// NewConfig creates a new initialised application Config.
+func NewConfig() (*Config, error) {
+	var config Config
+
+	if err := envconfig.Process("", &config); err != nil {
+		return nil, errors.Wrap(err, "error parsing config")
+	}
+
+	return &config, nil
+}