server.go

var (
	PLAID_CLIENT_ID                   = ""
	PLAID_SECRET                      = ""
	PLAID_ENV                         = ""
	PLAID_PRODUCTS                    = ""
	PLAID_COUNTRY_CODES               = ""
	PLAID_REDIRECT_URI                = ""
	APP_PORT                          = ""
	client              *plaid.Client = nil
)

var environments = map[string]plaid.Environment{
	"sandbox":     plaid.Sandbox,
	"development": plaid.Development,
	"production":  plaid.Production,
}

func init() {
	// load env vars from .env file
	err := godotenv.Load()
	if err != nil {
		log.Fatal("Error loading .env file. Did you copy .env.example to .env and fill it out?")
	}

	// set constants from env
	PLAID_CLIENT_ID = os.Getenv("PLAID_CLIENT_ID")
	PLAID_SECRET = os.Getenv("PLAID_SECRET")
	PLAID_ENV = os.Getenv("PLAID_ENV")
	PLAID_PRODUCTS = os.Getenv("PLAID_PRODUCTS")
	PLAID_COUNTRY_CODES = os.Getenv("PLAID_COUNTRY_CODES")
	PLAID_REDIRECT_URI = os.Getenv("PLAID_REDIRECT_URI")
	APP_PORT = os.Getenv("APP_PORT")

	// set defaults
	if PLAID_PRODUCTS == "" {
		PLAID_PRODUCTS = "transactions"
	}
	if PLAID_COUNTRY_CODES == "" {
		PLAID_COUNTRY_CODES = "US"
	}
	if PLAID_ENV == "" {
		PLAID_ENV = "sandbox"
	}
	if APP_PORT == "" {
		APP_PORT = "8000"
	}
	if PLAID_CLIENT_ID == "" {
		log.Fatal("PLAID_CLIENT_ID is not set. Make sure to fill out the .env file")
	}
	if PLAID_SECRET == "" {
		log.Fatal("PLAID_SECRET is not set. Make sure to fill out the .env file")
	}

	// create Plaid client
	client, err = plaid.NewClient(plaid.ClientOptions{
		PLAID_CLIENT_ID,
		PLAID_SECRET,
		environments[PLAID_ENV],
		&http.Client{},
	})
	if err != nil {
		panic(fmt.Errorf("unexpected error while initializing plaid client %w", err))
	}
}