send debug messages to segment for bg task execution

apple/OmnivoreKit/Sources/App/Services.swift

@@ -3,10 +3,11 @@ import Foundation
 import Models
 import OSLog
 import Services
+import Utils
 
 public final class Services {
   static let fetchTaskID = "app.omnivore.fetchLinkedItems"
-  static let secondsToWaitBeforeNextBackgroundRefresh: TimeInterval = 3 // 1 hour
+  static let secondsToWaitBeforeNextBackgroundRefresh: TimeInterval = isDebug ? 0 : 3600 // 1 hour
   static let logger = Logger(subsystem: "app.omnivore", category: "services-class")
 
   public let authenticator: Authenticator
@@ -24,6 +25,7 @@ extension Services {
   public static func registerBackgroundFetch() {
     BGTaskScheduler.shared.register(forTaskWithIdentifier: fetchTaskID, using: nil) { task in
       if let task = task as? BGAppRefreshTask {
+        EventTracker.trackForDebugging("executing app.omnivore.fetchLinkedItems bg task")
         logger.debug("in background task register closure")
         startBackgroundFetch(task: task)
       }
@@ -48,12 +50,12 @@ extension Services {
     let services = Services()
 
     task.expirationHandler = {
+      EventTracker.trackForDebugging("background fetch expiration handler called")
       logger.debug("handling background fetch expiration")
-      // cancel tasks if still running
-      // maybe save/cancel pending changes to coredata context?
     }
 
     services.peformBackgroundFetch()
+    EventTracker.trackForDebugging("background fetch task completed successfully")
     task.setTaskCompleted(success: true)
   }
 
@@ -61,6 +63,7 @@ extension Services {
     Services.logger.debug("starting background fetch")
 
     guard authenticator.hasValidAuthToken else {
+      EventTracker.trackForDebugging("background fetch failed: user does not habe a valid auth token")
       Services.logger.debug("background fetch failed: user does not habe a valid auth token")
       return
     }

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

@@ -7,6 +7,12 @@ public enum EventTracker {
     _ = segment?.version()
   }
 
+  public static func trackForDebugging(_ message: String) {
+    #if DEBUG
+      track(.debugMessage(message: message))
+    #endif
+  }
+
   public static func track(_ event: TrackableEvent) {
     segment?.track(name: event.name, properties: event.properties)
   }

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

@@ -2,6 +2,7 @@ import Foundation
 
 public enum TrackableEvent {
   case linkRead(linkID: String, slug: String, originalArticleURL: String)
+  case debugMessage(message: String)
 }
 
 public extension TrackableEvent {
@@ -9,6 +10,8 @@ public extension TrackableEvent {
     switch self {
     case .linkRead:
       return "link_read"
+    case .debugMessage:
+      return "debug_message"
     }
   }
 
@@ -20,6 +23,8 @@ public extension TrackableEvent {
         "slug": slug,
         "url": originalArticleURL
       ]
+    case let .debugMessage(message: message):
+      return ["message": message]
     }
   }
 }