package errors

import (
	stderrors "errors"
	"fmt"
)

// Standard errors that can be used across packages
var (
	ErrNotFound          = stderrors.New("resource not found")
	ErrInvalidInput      = stderrors.New("invalid input")
	ErrUnauthorized      = stderrors.New("unauthorized")
	ErrInternalServer    = stderrors.New("internal server error")
	ErrDatabaseOperation = stderrors.New("database operation failed")
)

// ConfigError represents a configuration-related error
type ConfigError struct {
	Section string
	Err     error
}

func (e *ConfigError) Error() string {
	return fmt.Sprintf("configuration error in %s: %v", e.Section, e.Err)
}

func (e *ConfigError) Unwrap() error {
	return e.Err
}

// NewConfigError creates a new ConfigError
func NewConfigError(section string, err error) *ConfigError {
	return &ConfigError{
		Section: section,
		Err:     err,
	}
}