// Package errors provides domain-specific error types for the KnowFoolery application.
package errors

// ErrorCode represents a unique error code for domain errors.
type ErrorCode string

// Error codes for the KnowFoolery application.
const (
	// General errors
	CodeNotFound     ErrorCode = "NOT_FOUND"
	CodeInvalidInput ErrorCode = "INVALID_INPUT"
	CodeUnauthorized ErrorCode = "UNAUTHORIZED"
	CodeForbidden    ErrorCode = "FORBIDDEN"
	CodeConflict     ErrorCode = "CONFLICT"
	CodeInternal     ErrorCode = "INTERNAL"

	// Game session errors
	CodeSessionExpired     ErrorCode = "SESSION_EXPIRED"
	CodeGameInProgress     ErrorCode = "GAME_IN_PROGRESS"
	CodeMaxAttemptsReached ErrorCode = "MAX_ATTEMPTS_REACHED"
	CodeSessionNotActive   ErrorCode = "SESSION_NOT_ACTIVE"

	// Question errors
	CodeQuestionNotFound     ErrorCode = "QUESTION_NOT_FOUND"
	CodeNoQuestionsAvailable ErrorCode = "NO_QUESTIONS_AVAILABLE"

	// User errors
	CodeUserNotFound      ErrorCode = "USER_NOT_FOUND"
	CodeUserAlreadyExists ErrorCode = "USER_ALREADY_EXISTS"
	CodeEmailNotVerified  ErrorCode = "EMAIL_NOT_VERIFIED"

	// Validation errors
	CodeValidationFailed  ErrorCode = "VALIDATION_FAILED"
	CodeInvalidPlayerName ErrorCode = "INVALID_PLAYER_NAME"
	CodeInvalidAnswer     ErrorCode = "INVALID_ANSWER"

	// Authentication errors
	CodeInvalidToken ErrorCode = "INVALID_TOKEN"
	CodeTokenExpired ErrorCode = "TOKEN_EXPIRED"
	CodeMFARequired  ErrorCode = "MFA_REQUIRED"

	// Rate limiting errors
	CodeRateLimitExceeded ErrorCode = "RATE_LIMIT_EXCEEDED"
)

// String returns the string representation of the error code.
func (c ErrorCode) String() string {
	return string(c)
}