nip61: perhaps simplify the function signature and support specific source mints.

sdk/helpers.go

@@ -1,21 +0,0 @@
-package sdk
-
-import (
-	"slices"
-
-	jsoniter "github.com/json-iterator/go"
-)
-
-var json = jsoniter.ConfigFastest
-
-// appendUnique adds items to an array only if they don't already exist in the array.
-// Returns the modified array.
-func appendUnique[I comparable](arr []I, item ...I) []I {
-	for _, item := range item {
-		if slices.Contains(arr, item) {
-			return arr
-		}
-		arr = append(arr, item)
-	}
-	return arr
-}

sdk/metadata.go

@@ -2,6 +2,7 @@ package sdk
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"time"
 

sdk/specific_event.go

@@ -76,9 +76,9 @@ func (sys *System) FetchSpecificEvent(
 		author = v.Author
 		filter.IDs = []nostr.ID{v.ID}
 		relays = append(relays, v.Relays...)
-		relays = appendUnique(relays, sys.FallbackRelays.Next())
+		relays = nostr.AppendUnique(relays, sys.FallbackRelays.Next())
 		fallback = append(fallback, sys.JustIDRelays.URLs...)
-		fallback = appendUnique(fallback, sys.FallbackRelays.Next())
+		fallback = nostr.AppendUnique(fallback, sys.FallbackRelays.Next())
 		priorityRelays = append(priorityRelays, v.Relays...)
 	case nostr.EntityPointer:
 		author = v.PublicKey
@@ -86,7 +86,7 @@ func (sys *System) FetchSpecificEvent(
 		filter.Tags = nostr.TagMap{"d": []string{v.Identifier}}
 		filter.Kinds = []nostr.Kind{v.Kind}
 		relays = append(relays, v.Relays...)
-		relays = appendUnique(relays, sys.FallbackRelays.Next())
+		relays = nostr.AppendUnique(relays, sys.FallbackRelays.Next())
 		fallback = append(fallback, sys.FallbackRelays.Next(), sys.FallbackRelays.Next())
 		priorityRelays = append(priorityRelays, v.Relays...)
 	}
@@ -110,8 +110,8 @@ func (sys *System) FetchSpecificEvent(
 		}
 
 		// arrange these
-		relays = appendUnique(relays, authorRelays...)
-		priorityRelays = appendUnique(priorityRelays, authorRelays...)
+		relays = nostr.AppendUnique(relays, authorRelays...)
+		priorityRelays = nostr.AppendUnique(priorityRelays, authorRelays...)
 	}
 
 	var result *nostr.Event