fix: Complete NIP-59 gift wrap implementation with API fixes

This commit resolves all build errors in the NIP-59 gift wrap feature:

- Created Switch UI component using simple toggle button pattern
- Fixed InboxViewer to use <label> elements instead of custom Label component
- Corrected createTimelineLoader API usage (4 args + call loader() to get observable)
- Fixed ISigner nip44 decryption API (use signer.nip44.decrypt instead of signer.nip44Decrypt)
- Updated mock signer in tests to match ISigner interface
- Added event handling via eventStore timeline subscription

All tests passing, build successful.

src/components/InboxViewer.tsx

@@ -12,7 +12,6 @@ import {
 import { useGrimoire } from "@/core/state";
 import { Card, CardContent, CardHeader, CardTitle } from "./ui/card";
 import { Button } from "./ui/button";
-import { Label } from "./ui/label";
 import { Switch } from "./ui/switch";
 import giftWrapLoader from "@/services/gift-wrap-loader";
 import { toast } from "sonner";
@@ -172,9 +171,12 @@ export function InboxViewer() {
             {/* Enable Private Messages */}
             <div className="flex items-center justify-between">
               <div className="flex flex-col gap-1">
-                <Label htmlFor="enable-private-messages">
+                <label
+                  htmlFor="enable-private-messages"
+                  className="text-sm font-medium leading-none peer-disabled:cursor-not-allowed peer-disabled:opacity-70 cursor-pointer"
+                >
                   Enable Private Messages
-                </Label>
+                </label>
                 <p className="text-sm text-muted-foreground">
                   Fetch and store encrypted gift wraps from DM relays
                 </p>
@@ -190,7 +192,12 @@ export function InboxViewer() {
             {privateMessagesEnabled && (
               <div className="flex items-center justify-between">
                 <div className="flex flex-col gap-1">
-                  <Label htmlFor="auto-decrypt">Auto-Decrypt Messages</Label>
+                  <label
+                    htmlFor="auto-decrypt"
+                    className="text-sm font-medium leading-none peer-disabled:cursor-not-allowed peer-disabled:opacity-70 cursor-pointer"
+                  >
+                    Auto-Decrypt Messages
+                  </label>
                   <p className="text-sm text-muted-foreground">
                     Automatically decrypt gift wraps as they arrive
                   </p>

src/components/ui/switch.tsx

@@ -0,0 +1,47 @@
+import * as React from "react";
+import { cn } from "@/lib/utils";
+
+export interface SwitchProps {
+  id?: string;
+  checked?: boolean;
+  onCheckedChange?: (checked: boolean) => void;
+  disabled?: boolean;
+  className?: string;
+}
+
+/**
+ * Simple toggle switch component
+ * Styled as a sliding toggle for boolean states
+ */
+export const Switch = React.forwardRef<HTMLButtonElement, SwitchProps>(
+  (
+    { id, checked = false, onCheckedChange, disabled = false, className },
+    ref,
+  ) => {
+    return (
+      <button
+        id={id}
+        ref={ref}
+        type="button"
+        role="switch"
+        aria-checked={checked}
+        disabled={disabled}
+        onClick={() => !disabled && onCheckedChange?.(!checked)}
+        className={cn(
+          "relative inline-flex h-6 w-11 shrink-0 cursor-pointer rounded-full border-2 border-transparent transition-colors duration-200 ease-in-out focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 focus-visible:ring-offset-background disabled:cursor-not-allowed disabled:opacity-50",
+          checked ? "bg-primary" : "bg-input",
+          className,
+        )}
+      >
+        <span
+          className={cn(
+            "pointer-events-none inline-block h-5 w-5 rounded-full bg-background shadow-lg ring-0 transition duration-200 ease-in-out",
+            checked ? "translate-x-5" : "translate-x-0",
+          )}
+        />
+      </button>
+    );
+  },
+);
+
+Switch.displayName = "Switch";

src/services/gift-wrap-loader.ts

@@ -163,17 +163,12 @@ class GiftWrapLoader {
       };
 
       // Create timeline loader for gift wraps
-      const timeline = createTimelineLoader(pool, {
+      const loader = createTimelineLoader(pool, inboxRelays, [filter], {
         eventStore,
-        relays: inboxRelays,
-        filters: [filter],
       });
 
       // Subscribe to timeline
-      this.subscription = timeline.subscribe({
-        next: (event: NostrEvent) => {
-          void this.handleGiftWrap(event);
-        },
+      this.subscription = loader().subscribe({
         error: (error: Error) => {
           console.error("[GiftWrapLoader] Timeline error:", error);
           this.state$.next({
@@ -192,6 +187,23 @@ class GiftWrapLoader {
         },
       });
 
+      // Handle events from timeline via eventStore subscription
+      // Timeline loader automatically adds events to eventStore
+      const eventSub = eventStore.timeline([filter]).subscribe((events) => {
+        events.forEach((event) => {
+          void this.handleGiftWrap(event);
+        });
+      });
+
+      // Store both subscriptions for cleanup
+      const originalUnsub = this.subscription.unsubscribe.bind(
+        this.subscription,
+      );
+      this.subscription.unsubscribe = () => {
+        originalUnsub();
+        eventSub.unsubscribe();
+      };
+
       // Process any pending gift wraps from database
       await this.processPendingGiftWraps();
     } catch (error) {

src/services/gift-wrap.test.ts

@@ -8,19 +8,20 @@ import type { NostrEvent } from "@/types/nostr";
 import type { ISigner } from "applesauce-signers";
 
 // Mock signer for testing
-function createMockSigner(decryptResponses: Map<string, string>): ISigner & {
-  nip44Decrypt: (pubkey: string, ciphertext: string) => Promise<string>;
-} {
+function createMockSigner(decryptResponses: Map<string, string>): ISigner {
   return {
     getPublicKey: vi.fn().mockResolvedValue("mock-pubkey"),
     signEvent: vi.fn(),
-    nip44Decrypt: vi.fn(async (pubkey: string, ciphertext: string) => {
-      const response = decryptResponses.get(`${pubkey}:${ciphertext}`);
-      if (!response) {
-        throw new Error("Mock decryption failed: no response configured");
-      }
-      return response;
-    }),
+    nip44: {
+      encrypt: vi.fn(),
+      decrypt: vi.fn(async (pubkey: string, ciphertext: string) => {
+        const response = decryptResponses.get(`${pubkey}:${ciphertext}`);
+        if (!response) {
+          throw new Error("Mock decryption failed: no response configured");
+        }
+        return response;
+      }),
+    },
   };
 }
 

src/services/gift-wrap.ts

@@ -121,7 +121,7 @@ async function unwrapGiftWrap(
 ): Promise<NostrEvent> {
   validateGiftWrap(giftWrap);
 
-  if (!signer.nip44Decrypt) {
+  if (!signer.nip44?.decrypt) {
     throw new GiftWrapError(
       "Signer does not support NIP-44 decryption",
       "NO_SIGNER",
@@ -130,7 +130,7 @@ async function unwrapGiftWrap(
 
   try {
     // Decrypt using the gift wrap author's pubkey (ephemeral key)
-    const decryptedContent = await signer.nip44Decrypt(
+    const decryptedContent = await signer.nip44.decrypt(
       giftWrap.pubkey,
       giftWrap.content,
     );
@@ -165,7 +165,7 @@ async function unsealSeal(
 ): Promise<NostrEvent> {
   validateSeal(seal);
 
-  if (!signer.nip44Decrypt) {
+  if (!signer.nip44?.decrypt) {
     throw new GiftWrapError(
       "Signer does not support NIP-44 decryption",
       "NO_SIGNER",
@@ -174,7 +174,7 @@ async function unsealSeal(
 
   try {
     // Decrypt using the seal author's pubkey (sender's real key)
-    const decryptedContent = await signer.nip44Decrypt(
+    const decryptedContent = await signer.nip44.decrypt(
       seal.pubkey,
       seal.content,
     );