Master (#1262)

* clear

* feat: Add everything

* fix: Commenht

crypto/ucan/stubs.go

@@ -0,0 +1,87 @@
+package ucan
+
+import (
+	"time"
+)
+
+// TokenBuilderInterface defines token building methods
+type TokenBuilderInterface interface {
+	CreateOriginToken(
+		issuer string,
+		capabilities []Attenuation,
+		facts []Fact,
+		start, expiry time.Time,
+	) (*Token, error)
+	CreateDelegatedToken(
+		parentToken *Token,
+		issuer string,
+		capabilities []Attenuation,
+		facts []Fact,
+		start, expiry time.Time,
+	) (*Token, error)
+}
+
+// TokenBuilder implements token builder functionality
+type TokenBuilder struct {
+	Capability Attenuation
+}
+
+// CreateOriginToken creates a new origin token
+func (tb *TokenBuilder) CreateOriginToken(
+	issuer string,
+	capabilities []Attenuation,
+	facts []Fact,
+	start, expiry time.Time,
+) (*Token, error) {
+	return &Token{
+		Raw:          "",
+		Issuer:       issuer,
+		Audience:     "",
+		ExpiresAt:    expiry.Unix(),
+		NotBefore:    start.Unix(),
+		Attenuations: capabilities,
+		Proofs:       []Proof{},
+		Facts:        facts,
+	}, nil
+}
+
+// CreateDelegatedToken creates a delegated token
+func (tb *TokenBuilder) CreateDelegatedToken(
+	parentToken *Token,
+	issuer string,
+	capabilities []Attenuation,
+	facts []Fact,
+	start, expiry time.Time,
+) (*Token, error) {
+	proofs := []Proof{}
+	if parentToken.Raw != "" {
+		proofs = append(proofs, Proof(parentToken.Raw))
+	}
+
+	return &Token{
+		Raw:          "",
+		Issuer:       issuer,
+		Audience:     parentToken.Issuer,
+		ExpiresAt:    expiry.Unix(),
+		NotBefore:    start.Unix(),
+		Attenuations: capabilities,
+		Proofs:       proofs,
+		Facts:        facts,
+	}, nil
+}
+
+// Stub for DID validation
+func isValidDID(did string) bool {
+	// Basic DID validation stub
+	return did != "" && len(did) > 5 && did[:4] == "did:"
+}
+
+// Stub for preparing delegation proofs
+func prepareDelegationProofs(token *Token, capabilities []Attenuation) ([]Proof, error) {
+	// Minimal stub implementation
+	proofs := []Proof{}
+	if token.Raw != "" {
+		proofs = append(proofs, Proof(token.Raw))
+	}
+	return proofs, nil
+}