storage rework

pkg/kvsingle/single.go

@@ -0,0 +1,24 @@
+package kvsingle
+
+import (
+	"context"
+
+	"github.com/royalcat/kv"
+)
+
+type Value[K, V any] struct {
+	Key K
+	db  kv.Store[K, V]
+}
+
+func New[K, V any](db kv.Store[K, V], key K) *Value[K, V] {
+	return &Value[K, V]{Key: key, db: db}
+}
+
+func (s *Value[K, V]) Get(ctx context.Context) (V, bool, error) {
+	return s.db.Get(ctx, s.Key)
+}
+
+func (s *Value[K, V]) Set(ctx context.Context, value V) error {
+	return s.db.Set(ctx, s.Key, value)
+}