From 07f3a992af79cbd4f849326a6f0dcf79706ec8a5 Mon Sep 17 00:00:00 2001
From: Konstantin Portnov <konstantin.portnov@manychat.com>
Date: Tue, 14 Oct 2025 21:54:17 +0200
Subject: [PATCH] Parse feed identifier

---
 Sources/OPDS/OPDS1Parser.swift             | 2 ++
 Sources/Shared/OPDS/OpdsMetadata.swift     | 1 +
 Tests/OPDSTests/readium_opds1_1_test.swift | 1 +
 3 files changed, 4 insertions(+)

diff --git a/Sources/OPDS/OPDS1Parser.swift b/Sources/OPDS/OPDS1Parser.swift
index 92cd83a7a..43d38125e 100644
--- a/Sources/OPDS/OPDS1Parser.swift
+++ b/Sources/OPDS/OPDS1Parser.swift
@@ -93,6 +93,8 @@ public class OPDS1Parser: Loggable {
         }
         let feed = Feed(title: title)
 
+        feed.metadata.identifier = root.firstChild(tag: "id")?.stringValue
+
         if let tmpDate = root.firstChild(tag: "updated")?.stringValue,
            let date = tmpDate.dateFromISO8601
         {
diff --git a/Sources/Shared/OPDS/OpdsMetadata.swift b/Sources/Shared/OPDS/OpdsMetadata.swift
index 1576eaf1f..766131357 100644
--- a/Sources/Shared/OPDS/OpdsMetadata.swift
+++ b/Sources/Shared/OPDS/OpdsMetadata.swift
@@ -9,6 +9,7 @@ import Foundation
 /// OPDS metadata properties.
 public class OpdsMetadata {
     public var title: String
+    public var identifier: String?
     public var numberOfItem: Int?
     public var itemsPerPage: Int?
     public var currentPage: Int?
diff --git a/Tests/OPDSTests/readium_opds1_1_test.swift b/Tests/OPDSTests/readium_opds1_1_test.swift
index a79a345e8..7eccb60f0 100644
--- a/Tests/OPDSTests/readium_opds1_1_test.swift
+++ b/Tests/OPDSTests/readium_opds1_1_test.swift
@@ -46,6 +46,7 @@ class readium_opds1_1_test: XCTestCase {
     }
 
     func testMetadata() {
+        XCTAssert(feed!.metadata.identifier == "urn:uuid:433a5d6a-0b8c-4933-af65-4ca4f02763eb")
         XCTAssert(feed!.metadata.title == "Unpopular Publications")
         // TODO: add more tests...
     }