Report download progress to the UI

ios/App/Shared/models/DownloadItem.swift

@@ -28,6 +28,10 @@ struct DownloadItem: Realmable, Codable {
     static func indexedProperties() -> [String] {
         ["libraryItemId"]
     }
+    
+    private enum CodingKeys : String, CodingKey {
+        case id, libraryItemId, episodeId, userMediaProgress, serverConnectionConfigId, serverAddress, serverUserId, mediaType, itemTitle, downloadItemParts
+    }
 }
 
 extension DownloadItem {
@@ -58,17 +62,20 @@ struct DownloadItemPart: Realmable, Codable {
     var uri: String?
     var destinationUri: String?
     var finalDestinationUri: String?
-    var downloadId: Int?
-    var progress: Int = 0
+    var progress: Double = 0
     var task: URLSessionDownloadTask!
     
-    private enum CodingKeys : String, CodingKey {
-        case id, progress
+    static func primaryKey() -> String? {
+        return "id"
     }
     
     static func ignoredProperties() -> [String] {
         ["task"]
     }
+    
+    private enum CodingKeys : String, CodingKey {
+        case id, filename, completed, moved, failed, progress
+    }
 }
 
 extension DownloadItemPart {

ios/App/Shared/util/Database.swift

@@ -169,6 +169,20 @@ class Database {
         }
     }
     
+    public func updateDownloadItemPartPercent(downloadItemPartId: String, percent: Double) {
+        Database.realmQueue.sync {
+            try! instance.write {
+                let part = instance.object(ofType: DownloadItemPart.self, forPrimaryKey: downloadItemPartId)
+                guard var part = part else {
+                    NSLog("downloadItemPartId not found (\(downloadItemPartId)")
+                    return
+                }
+                part.progress = percent
+                instance.add(part, update: .modified)
+            }
+        }
+    }
+    
     public func getDeviceSettings() -> DeviceSettings {
         return Database.realmQueue.sync {
             return instance.objects(DeviceSettings.self).first ?? getDefaultDeviceSettings()