package upgrade

import (
	"fmt"
)

// ErrInvalidRequest for invalid requests
// - multiple-value if only 1 expected
type ErrInvalidRequest struct {
	Field  string
	Reason string
}

func (err ErrInvalidRequest) Error() string {
	return fmt.Sprintf("invalid field '%s': %s", err.Field, err.Reason)
}

// ErrIncompleteRequest when mandatory request fields are missing (request-line or headers)
// it contains the missing field as a string
type ErrIncompleteRequest string

func (err ErrIncompleteRequest) Error() string {
	return fmt.Sprintf("incomplete request, '%s' is invalid or missing", string(err))
}

// ErrInvalidOriginPolicy when a request has a violated origin policy
type ErrInvalidOriginPolicy struct {
	Host   string
	Origin string
	err    error
}

func (err ErrInvalidOriginPolicy) Error() string {
	return fmt.Sprintf("invalid origin policy; (host: '%s' origin: '%s' error: '%s')", err.Host, err.Origin, err.err)
}