config.go

package infra

import (
	"time"

	"github.com/imantung/golang_webform_for_gsheet/internal/app/infra/di"
	"github.com/kelseyhightower/envconfig"
)

const (
	ConfigPrefix = "APP"
)

type (
	Config struct {
		Address      string        `envconfig:"ADDRESS" default:":8089" required:"true"`
		ReadTimeout  time.Duration `envconfig:"READ_TIMEOUT" default:"5s"`
		WriteTimeout time.Duration `envconfig:"WRITE_TIMEOUT" default:"10s"`
		Debug        bool          `envconfig:"DEBUG" default:"true"`
		Pages        string        `envconfig:"PAGES" default:"web/template/*.gohtml"`

		GSheet struct {
			CredPath string `envconfig:"CRED_PATH" default:"service-account.json" required:"true"`
		}
	}
)

//go:generate rm -f $PROJ/.envrc
//go:generate file_append $PROJ/.envrc export APP_ADDRESS=:8089
//go:generate file_append $PROJ/.envrc export APP_READ_TIMEOUT=5s
//go:generate file_append $PROJ/.envrc export APP_WRITE_TIMEOUT=10s
//go:generate file_append $PROJ/.envrc export APP_DEBUG=true
//go:generate file_append $PROJ/.envrc export APP_PAGES=web/template/*.gohtml
//go:generate file_append $PROJ/.envrc export APP_GSHEET_CRED_PATH=service-account.json

func init() {
	di.Provide(LoadAppConfig)
}

func LoadAppConfig() (*Config, error) {
	var cfg Config
	if err := envconfig.Process(ConfigPrefix, &cfg); err != nil {
		return nil, err
	}
	return &cfg, nil
}