auth/pkg/code.go

package auth

import (
	"github.com/zitadel/oidc/v2/pkg/oidc"
)

type OIDCCodeChallenge struct {
	Challenge string
	Method    string
}

func CodeChallengeToOIDC(challenge *OIDCCodeChallenge) *oidc.CodeChallenge {
	if challenge == nil {
		return nil
	}
	challengeMethod := oidc.CodeChallengeMethodPlain
	if challenge.Method == "S256" {
		challengeMethod = oidc.CodeChallengeMethodS256
	}
	return &oidc.CodeChallenge{
		Challenge: challenge.Challenge,
		Method:    challengeMethod,
	}
}