Support Option Link for RSS

Sources/SyndiKit/Common/Entryable.swift

@@ -5,7 +5,7 @@ public protocol Entryable {
   /// Unique Identifier of the Item.
   var id: EntryID { get }
   /// The URL of the item.
-  var url: URL { get }
+  var url: URL? { get }
   /// The title of the item.
   var title: String { get }
   /// HTML content of the item.

Sources/SyndiKit/Formats/Feeds/Atom/AtomEntry.swift

@@ -1,8 +1,6 @@
 import Foundation
 
 public struct AtomEntry: Codable {
-  public static let defaultURL = URL(string: "/")!
-
   /// A permanent, universally unique identifier for an entry.
   public let id: EntryID
 
@@ -61,8 +59,8 @@ extension AtomEntry: Entryable {
     atomCategories
   }
 
-  public var url: URL {
-    links.first?.href ?? Self.defaultURL
+  public var url: URL? {
+    links.first?.href
   }
 
   public var contentHtml: String? {

Sources/SyndiKit/Formats/Feeds/JSONFeed/JSONItem.swift

@@ -2,7 +2,7 @@ import Foundation
 
 public struct JSONItem: Codable {
   public let guid: EntryID
-  public let url: URL
+  public let url: URL?
   public let title: String
   public let contentHtml: String?
   public let summary: String?

Sources/SyndiKit/Formats/Feeds/RSS/RSSItem.swift

@@ -3,7 +3,7 @@ import XMLCoder
 
 public struct RSSItem: Codable {
   public let title: String
-  public let link: URL
+  public let link: URL?
   public let description: CData?
   public let guid: EntryID
   public let pubDate: Date?
@@ -135,7 +135,7 @@ public struct RSSItem: Codable {
   public init(from decoder: Decoder) throws {
     let container = try decoder.container(keyedBy: CodingKeys.self)
     title = try container.decode(String.self, forKey: .title)
-    link = try container.decode(URL.self, forKey: .link)
+    link = try container.decodeIfPresent(URL.self, forKey: .link)
     description = try container.decodeIfPresent(CData.self, forKey: .description)
     guid = try container.decode(EntryID.self, forKey: .guid)
     pubDate = try container.decodeDateIfPresentAndValid(forKey: .pubDate)
@@ -297,7 +297,7 @@ extension RSSItem: Entryable {
     categoryTerms
   }
 
-  public var url: URL {
+  public var url: URL? {
     link
   }
 

Sources/SyndiKit/Formats/Media/Wordpress/WordPressPost.swift

@@ -149,9 +149,11 @@
     guard let modifiedDate = item.wpModifiedDate else {
       throw WordPressError.missingField(.modifiedDate)
     }
+    guard let link = item.link else {
+      throw WordPressError.missingField(.link)
+    }
 
     let title = item.title
-    let link = item.link
     let categoryTerms = item.categoryTerms
     let meta = item.wpPostMeta
     let pubDate = item.pubDate

Tests/SyndiKitTests/RSSCodedTests.swift

@@ -406,6 +406,27 @@ public final class SyndiKitTests: XCTestCase {
     try assertInvalidGeoData(from: invalidCoords)
   }
 
+  func testPodcastMissingLink() throws {
+    guard let feed = try? Content.xmlFeeds["wait-wait-dont-tell-me"]?.get() else {
+      XCTFail("Missing Podcast \(name)")
+      return
+    }
+
+    guard let rss = feed as? RSSFeed else {
+      XCTFail("Wrong Type \(name)")
+      return
+    }
+
+    guard rss.channel.items.count > 193 else {
+      XCTFail("Missing Item \(name)")
+      return
+    }
+
+    let item = rss.channel.items[193]
+
+    XCTAssertNil(item.link)
+  }
+
   private func assertInvalidGeoData(from xmlStr: String) throws {
     guard let data = xmlStr.data(using: .utf8) else {
       XCTFail("Expected data out of \(xmlStr)")