Fix AlbyHub zaps

AlbyHub does not use description hash invoices. We had some code that
looked for zap request invoices inside the description which albyhub
does not do.

Change our code to always get the zap_request from the description.

Fixes: https://github.com/damus-io/damus/issues/2363
Changelog-Fixed: Fix albyhub zaps not appearing
Signed-off-by: William Casarin <jb55@jb55.com>

damus/Util/Zap.swift

@@ -309,14 +309,10 @@ struct Zap {
             return nil
         }
          */
-        guard let desc = get_zap_description(zap_ev, inv_desc: zap_invoice.description) else {
+        guard let zap_req = get_zap_request(zap_ev) else {
             return nil
         }
 
-        guard let zap_req = decode_nostr_event_json(desc) else {
-            return nil
-        }
-        
         guard validate_event(ev: zap_req) == .ok else {
             return nil
         }
@@ -399,21 +395,12 @@ func event_has_tag(ev: NostrEvent, tag: String) -> Bool {
     return false
 }
 
-/// Fetches the description from either the invoice, or tags, depending on the type of invoice
-func get_zap_description(_ ev: NostrEvent, inv_desc: InvoiceDescription) -> String? {
-    switch inv_desc {
-    case .description(let string):
-        return string
-    case .description_hash(let deschash):
-        guard let desc = event_tag(ev, name: "description") else {
-            return nil
-        }
-        guard let data = desc.data(using: .utf8) else {
-            return nil
-        }
-        
-        return desc
+func get_zap_request(_ ev: NostrEvent) -> NostrEvent? {
+    guard let desc = event_tag(ev, name: "description") else {
+        return nil
     }
+
+    return decode_nostr_event_json(desc)
 }
 
 func invoice_to_zap_invoice(_ invoice: Invoice) -> ZapInvoice? {

damusTests/ZapTests.swift

@@ -16,7 +16,39 @@ final class ZapTests: XCTestCase {
     override func tearDownWithError() throws {
         // Put teardown code here. This method is called after the invocation of each test method in the class.
     }
-    
+
+    func test_alby_zap() throws {
+        let zapjson = "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"
+
+        guard let json_data = Data(base64Encoded: zapjson) else {
+            XCTAssert(false)
+            return
+        }
+
+        let json_str = String(decoding: json_data, as: UTF8.self)
+
+        guard let ev = decode_nostr_event_json(json: json_str) else {
+            XCTAssert(false)
+            return
+        }
+
+        let zapper = Pubkey(hex: "79f00d3f5a19ec806189fcab03c1be4ff81d18ee4f653c88fac41fe03570f432")!
+        guard let zap = Zap.from_zap_event(zap_ev: ev, zapper: zapper, our_privkey: nil) else {
+            XCTAssert(false)
+            return
+        }
+
+        let note_id = NoteId(hex: "bcb2fcfe1c467c5ec8285e385c36ec13879709ced9d8800cb340ebf218c3210d")!
+        let author = Pubkey(hex: "15b5cf6cdf4fd1c02f28bcce0f197cafae4c8c7c66a3e2e23af9fe610875315e")!
+        XCTAssertEqual(zap.zapper, zapper)
+        XCTAssertEqual(zap.target, ZapTarget.note(id: note_id, author: author))
+
+        XCTAssertEqual(NotificationFormatter.zap_notification_title(zap), "Zap")
+        XCTAssertEqual(NotificationFormatter.zap_notification_body(profiles: Profiles(ndb: test_damus_state.ndb), zap: zap), "You received 1k sats from 1q5sah9f:mqzxky65: \"⚡Non-custodial zap from my Alby Hub\"")
+
+
+    }
+
     func test_private_zap() throws {
         let alice = generate_new_keypair()
         let bob = generate_new_keypair()