Add content reader property to link_read event

apple/OmnivoreKit/Sources/App/Views/LinkItemDetailView.swift

@@ -17,12 +17,11 @@ import Views
     if let item = item {
       pdfItem = PDFItem.make(item: item)
       self.item = item
+      trackReadEvent(reader: item.isPDF ? "PDF" : "WEB")
     }
-
-    trackReadEvent()
   }
 
-  private func trackReadEvent() {
+  private func trackReadEvent(reader: String) {
     guard let itemID = item?.unwrappedID ?? pdfItem?.itemID else { return }
     guard let slug = item?.unwrappedSlug ?? pdfItem?.slug else { return }
     guard let originalArticleURL = item?.unwrappedPageURLString ?? pdfItem?.downloadURL else { return }
@@ -31,6 +30,7 @@ import Views
       .linkRead(
         linkID: itemID,
         slug: slug,
+        reader: reader,
         originalArticleURL: originalArticleURL
       )
     )

apple/OmnivoreKit/Sources/App/Views/WebReader/WebReaderLoadingContainer.swift

@@ -25,6 +25,7 @@ import Views
       .linkRead(
         linkID: item.unwrappedID,
         slug: item.unwrappedSlug,
+        reader: "WEB",
         originalArticleURL: item.unwrappedPageURLString
       )
     )

apple/OmnivoreKit/Sources/Utils/EventTracking/TrackableEvents.swift

@@ -1,7 +1,7 @@
 import Foundation
 
 public enum TrackableEvent {
-  case linkRead(linkID: String, slug: String, originalArticleURL: String)
+  case linkRead(linkID: String, slug: String, reader: String, originalArticleURL: String)
   case debugMessage(message: String)
   case backgroundFetch(jobStatus: BackgroundFetchJobStatus, itemCount: Int, secondsElapsed: Int)
   case audioSessionStart(linkID: String)
@@ -33,10 +33,11 @@ public extension TrackableEvent {
 
   var properties: [String: String]? {
     switch self {
-    case let .linkRead(linkID: linkID, slug: slug, originalArticleURL: originalArticleURL):
+    case let .linkRead(linkID: linkID, slug: slug, reader: reader, originalArticleURL: originalArticleURL):
       return [
         "link": linkID,
         "slug": slug,
+        "reader": reader,
         "url": originalArticleURL
       ]
     case let .debugMessage(message: message):