refactor: remove frivolous comments from auth validation/credentials

Also removed internal/nostr package - now using northwest.io/nostr library.

1 files changed, 5 insertions, 28 deletions

diff --git a/internal/auth/validation.go b/internal/auth/validation.go
index 11435ee..8b9d8a1 100644
--- a/internal/auth/validation.go
+++ b/internal/auth/validation.go
@@ -7,52 +7,37 @@ import (
         "strings"
         "time"
 
-        "northwest.io/muxstr/internal/nostr"
+        "northwest.io/nostr"
 )
 
-// ValidationOptions configures how NIP-98 events are validated.
 type ValidationOptions struct {
-        // TimestampWindow is the maximum age of events in seconds
         TimestampWindow int64
-
-        // ValidatePayload checks the payload hash if present
         ValidatePayload bool
-
-        // ExpectedURI is the URI that should match the 'u' tag
-        ExpectedURI string
-
-        // ExpectedMethod is the method that should match the 'method' tag
-        ExpectedMethod string
-
-        // PayloadHash is the expected payload hash (if ValidatePayload is true)
-        PayloadHash string
+        ExpectedURI     string
+        ExpectedMethod  string
+        PayloadHash     string
 }
 
-// ParseAuthHeader extracts and decodes a NIP-98 event from an Authorization header.
-// Expected format: "Nostr <base64-encoded-event-json>"
+// ParseAuthHeader parses "Nostr <base64-encoded-event-json>" format.
 func ParseAuthHeader(header string) (*nostr.Event, error) {
         if header == "" {
                 return nil, fmt.Errorf("empty authorization header")
         }
 
-        // Check for "Nostr " prefix
         if !strings.HasPrefix(header, "Nostr ") {
                 return nil, fmt.Errorf("invalid authorization header: must start with 'Nostr '")
         }
 
-        // Extract base64 part
         encoded := strings.TrimPrefix(header, "Nostr ")
         if encoded == "" {
                 return nil, fmt.Errorf("empty authorization token")
         }
 
-        // Decode base64
         decoded, err := base64.StdEncoding.DecodeString(encoded)
         if err != nil {
                 return nil, fmt.Errorf("invalid base64 encoding: %w", err)
         }
 
-        // Unmarshal event
         var event nostr.Event
         if err := json.Unmarshal(decoded, &event); err != nil {
                 return nil, fmt.Errorf("invalid event JSON: %w", err)
@@ -61,19 +46,15 @@ func ParseAuthHeader(header string) (*nostr.Event, error) {
         return &event, nil
 }
 
-// ValidateAuthEvent validates a NIP-98 auth event according to the spec.
 func ValidateAuthEvent(event *nostr.Event, opts ValidationOptions) error {
-        // Check event kind
         if event.Kind != 27235 {
                 return fmt.Errorf("invalid event kind: expected 27235, got %d", event.Kind)
         }
 
-        // Verify signature
         if !event.Verify() {
                 return fmt.Errorf("invalid event signature")
         }
 
-        // Check timestamp (prevent replay attacks)
         now := time.Now().Unix()
         age := now - event.CreatedAt
 
@@ -85,7 +66,6 @@ func ValidateAuthEvent(event *nostr.Event, opts ValidationOptions) error {
                 return fmt.Errorf("event too old: %d seconds (max %d)", age, opts.TimestampWindow)
         }
 
-        // Validate 'u' tag (URL)
         if opts.ExpectedURI != "" {
                 uTag := event.Tags.Find("u")
                 if uTag == nil {
@@ -98,7 +78,6 @@ func ValidateAuthEvent(event *nostr.Event, opts ValidationOptions) error {
                 }
         }
 
-        // Validate 'method' tag
         if opts.ExpectedMethod != "" {
                 methodTag := event.Tags.Find("method")
                 if methodTag == nil {
@@ -111,7 +90,6 @@ func ValidateAuthEvent(event *nostr.Event, opts ValidationOptions) error {
                 }
         }
 
-        // Validate payload hash if requested
         if opts.ValidatePayload && opts.PayloadHash != "" {
                 payloadTag := event.Tags.Find("payload")
                 if payloadTag == nil {
@@ -127,7 +105,6 @@ func ValidateAuthEvent(event *nostr.Event, opts ValidationOptions) error {
         return nil
 }
 
-// ExtractPubkey returns the pubkey from a validated auth event.
 func ExtractPubkey(event *nostr.Event) string {
         return event.PubKey
 }