Recalculate completion for devices and update total properties

src/app/device.ts

@@ -1,4 +1,6 @@
 import { colors } from './style';
+import Folder from './folder';
+import { Completion } from './completion';
 
 interface Device {
     deviceID: string;
@@ -7,8 +9,9 @@ interface Device {
     state: string;
     paused: boolean;
     connected: boolean;
-    completion: number;
+    completion: Completion;
     used: boolean; // indicates if a folder is using the device
+    folders: Folder[];
 }
 
 namespace Device {
@@ -80,7 +83,7 @@ namespace Device {
         }
 
         if (d.connected) {
-            if (d.completion === 100) {
+            if (d.completion.completion === 100) {
                 return d.used ? StateType.Insync : StateType.UnusedInsync;
             } else {
                 return StateType.Syncing;
@@ -89,5 +92,35 @@ namespace Device {
 
         return d.used ? StateType.Disconnected : StateType.UnusedDisconnected;
     }
+
+    export function recalcCompletion(d: Device) {
+        if (!d || !d.completion || !d.folders) {
+            return
+        }
+        var total = 0, needed = 0, deletes = 0, items = 0;
+        d.folders.forEach(folder => {
+            if (!folder || !folder.completion)
+                return
+            needed += folder.completion.needBytes;
+            items += folder.completion.needItems;
+            deletes += folder.completion.needDeletes;
+        });
+        if (total == 0) {
+            d.completion.completion = 100;
+            d.completion.needBytes = 0;
+            d.completion.needItems = 0;
+        } else {
+            d.completion.completion = Math.floor(100 * (1 - needed / total));
+            d.completion.needBytes = needed;
+            d.completion.needItems = items + deletes;
+        }
+
+        if (needed == 0 && deletes > 0) {
+            // We don't need any data, but we have deletes that we need
+            // to do. Drop down the completion percentage to indicate
+            // that we have stuff to do.
+            d.completion.completion = 95;
+        }
+    }
 }
 export default Device;