errors

var (
	// ErrConfigurationInvalid indicates invalid configuration
	ErrConfigurationInvalid = errors.New("configuration is invalid")

	// ErrProviderNotFound indicates provider not found
	ErrProviderNotFound = errors.New("payment provider not found")

	// ErrProviderUnavailable indicates provider unavailable
	ErrProviderUnavailable = errors.New("payment provider unavailable")

	// ErrInvalidCredentials indicates invalid credentials
	ErrInvalidCredentials = errors.New("invalid credentials")

	// ErrNetworkTimeout indicates network timeout
	ErrNetworkTimeout = errors.New("network timeout")

	// ErrRateLimitExceeded indicates rate limit exceeded
	ErrRateLimitExceeded = errors.New("rate limit exceeded")

	// ErrInvalidResponse indicates invalid response
	ErrInvalidResponse = errors.New("invalid response from provider")

	// ErrTransactionNotFound indicates transaction not found
	ErrTransactionNotFound = errors.New("transaction not found")

	// Additional errors for client API
	ErrInvalidConfig        = errors.New("invalid configuration")
	ErrInvalidRequest       = errors.New("invalid payment request")
	ErrInvalidProvider      = errors.New("invalid payment provider type")
	ErrPaymentFailed        = errors.New("payment processing failed")
	ErrAuthenticationFailed = errors.New("authentication failed")
	ErrNetworkError         = errors.New("network error")
	ErrTimeout              = errors.New("request timeout")
)