sort values, fix symlink, update files as task

pandora/archive/tasks.py

@@ -0,0 +1,77 @@
+# -*- coding: utf-8 -*-
+# vi:si:et:sw=4:sts=4:ts=4
+from datetime import timedelta
+import os
+import re
+
+from celery.decorators import task, periodic_task
+
+from item.utils import oxid, parse_path
+from item.models import get_item
+import item.tasks
+
+import models
+
+@task(ignore_resulsts=True, queue='default')
+def update_files(user, volume, files):
+    user = models.User.objects.get(username=user)
+    volume, created = models.Volume.objects.get_or_create(user=user, name=volume)
+    all_files = []
+    for f in files:
+        path = f['path']
+        folder = path.split('/')
+        name = folder.pop()
+        if folder and folder[-1] in ('Extras', 'Versions', 'DVDs'):
+            name = '/'.join([folder.pop(), name])
+        folder = '/'.join(folder)
+        #print folder
+        #print name
+        f['folder'] = folder
+        f['name'] = name
+        oshash = f['oshash']
+        all_files.append(oshash)
+
+        same_folder = models.Instance.objects.filter(folder=folder, volume=volume)
+        if same_folder.count() > 0:
+            item = same_folder[0].file.item
+        else:
+            item = None
+
+        path = os.path.join(folder, name)
+
+        instance = models.Instance.objects.filter(file__oshash=oshash, volume=volume)
+        if instance.count()>0:
+            instance = instance[0]
+            updated = False
+            for key in ('mtime', 'name', 'folder'):
+                if f[key] != getattr(instance, key):
+                    setattr(instance, key, f[key])
+                    updated=True
+            if updated:
+		        instance.save()
+        else:
+            #look if oshash is known
+            file_objects = models.File.objects.filter(oshash=oshash)
+            if file_objects.count() > 0:
+                file_object = file_objects[0]
+            #new oshash, add to database
+            else:
+                if not item:
+                    item_info = parse_path(folder)
+                    item = get_item(item_info)
+                file_object = models.File()
+                file_object.oshash = oshash
+                file_object.name = name
+                file_object.item = item
+                file_object.save()
+            instance = models.Instance()
+            instance.volume = volume
+            instance.file = file_object
+            for key in ('mtime', 'name', 'folder'):
+                setattr(instance, key, f[key])
+            instance.save()
+
+    #remove deleted files
+    #FIXME: can this have any bad consequences? i.e. on the selction of used item files.
+    models.Instance.objects.filter(volume=volume).exclude(file__oshash__in=all_files).delete()
+