background upload plugin

add schemas

sync variants

formatting

initial implementation

use existing db, wip

move to separate folder

fix table definitions

wip

wiring it up

mobile/ios/Runner/Upload/NetworkMonitor.swift

@@ -0,0 +1,22 @@
+import Network
+
+class NetworkMonitor {
+  static let shared = NetworkMonitor()
+  private let monitor = NWPathMonitor()
+  private(set) var isConnected = false
+  private(set) var isExpensive = false
+
+  private init() {
+    monitor.pathUpdateHandler = { [weak self] path in
+      guard let self else { return }
+      let wasConnected = self.isConnected
+      self.isConnected = path.status == .satisfied
+      self.isExpensive = path.isExpensive
+
+      if !wasConnected && self.isConnected {
+        NotificationCenter.default.post(name: .networkDidConnect, object: nil)
+      }
+    }
+    monitor.start(queue: .global(qos: .utility))
+  }
+}