package verification

import "fmt"

// InvalidPhoneNumberError indicates phone number format is invalid
type InvalidPhoneNumberError struct {
	Phone string
}

func (e *InvalidPhoneNumberError) Error() string {
	return fmt.Sprintf("invalid phone number format: %s", e.Phone)
}

// PhoneAlreadyVerifiedError indicates phone is already verified by another account
type PhoneAlreadyVerifiedError struct {
	PhoneHash string
}

func (e *PhoneAlreadyVerifiedError) Error() string {
	return "this phone number is already verified by another account"
}

// RateLimitExceededError indicates too many verification requests
type RateLimitExceededError struct {
	Identifier string
	RetryAfter int // seconds
}

func (e *RateLimitExceededError) Error() string {
	return fmt.Sprintf("rate limit exceeded, retry after %d seconds", e.RetryAfter)
}

// SMSDeliveryFailedError indicates SMS failed to send
type SMSDeliveryFailedError struct {
	Reason string
}

func (e *SMSDeliveryFailedError) Error() string {
	return fmt.Sprintf("failed to send SMS: %s", e.Reason)
}

// InvalidCodeError indicates OTP code is incorrect
type InvalidCodeError struct{}

func (e *InvalidCodeError) Error() string {
	return "invalid verification code"
}

// CodeExpiredError indicates OTP code has expired
type CodeExpiredError struct{}

func (e *CodeExpiredError) Error() string {
	return "verification code has expired"
}

// RequestNotFoundError indicates request ID not found
type RequestNotFoundError struct {
	RequestID string
}

func (e *RequestNotFoundError) Error() string {
	return fmt.Sprintf("verification request not found: %s", e.RequestID)
}

// TooManyAttemptsError indicates too many failed verification attempts
type TooManyAttemptsError struct{}

func (e *TooManyAttemptsError) Error() string {
	return "too many failed attempts, please request a new code"
}

// PDSWriteFailedError indicates failure to write to PDS
type PDSWriteFailedError struct {
	DID    string
	Reason string
}

func (e *PDSWriteFailedError) Error() string {
	return fmt.Sprintf("failed to write verification to PDS for %s: %s", e.DID, e.Reason)
}