Import and Export for Models added

__init__.py

@@ -16,11 +16,8 @@ default_theme = 'default'
 
 class ThemeSettings(object):
     def __init__(self):
-        from .models import Setting
-        s = Setting.objects.filter(id=1).first()
-        if s is None:
-            s = Setting(id=1)
-            s.save()
+        from .models import GetSettings
+        s = GetSettings()
         for attr_name in model_to_dict(s):
             attr = getattr(s, attr_name)
             if attr_name == 'page_theme' and attr == 'default':

models.py

@@ -3,6 +3,25 @@ from . import available_themes, default_theme
 from PIL import Image
 
 
+def GetSettings():
+    s = Setting.objects.filter(id=1).first()
+    if s is None:
+        s = Setting(id=1)
+        s.save()
+    return s
+
+
+def SettingExist(data):
+    s = GetSettings()
+    if data['page_theme'] == s.page_theme and data['page_title'] == s.page_title and data['page_image'] == s.page_image.name:
+        if s.page_image.name:
+            return data['page_image_data'] == s.page_image.open().read().hex()
+        else:
+            return True
+    else:
+        return False
+
+
 class Setting(models.Model):
     page_image = models.ImageField(
         upload_to='theme',
@@ -24,6 +43,36 @@ class Setting(models.Model):
             img.thumbnail(output_size)
             img.save(self.page_image.path)
 
+    def export_data(self):
+        rv = {}
+        rv['page_image'] = self.page_image.name
+        rv['page_image_data'] = self.page_image.open().read().hex()
+        rv['page_theme'] = self.page_theme
+        rv['page_title'] = self.page_title
+        return rv
+
+    def import_data(self, data):
+        self.page_title = data['page_title']
+        self.page_theme = data['page_theme']
+        self.page_image.name = data['page_image']
+        if self.page_image.name:
+            with self.page_image.open('wb') as pi:
+                pi.write(bytes.fromhex(data['page_image_data']))
+        self.save()
+
+
+def BottomBarExist(data):
+    name = data.get('name', '')
+    icon_name = data.get('icon_name', '')
+    icon_data = data.get('icon_data')
+    url = data.get('url', '')
+    left = data.get('left')
+    sequence_number = data.get('sequence_number')
+    for bb_entry in BottomBar.objects.filter(name=name, icon=icon_name, url=url, left=left, sequence_number=sequence_number):
+        if icon_name == '' or icon_data == bb_entry.icon.open().read().hex():
+            return True
+    return False
+
 
 class BottomBar(models.Model):
     name = models.CharField(max_length=64, blank=True)
@@ -40,3 +89,27 @@ class BottomBar(models.Model):
                 output_size = (int(img.width * 40 / img.height), 40)
                 img.thumbnail(output_size)
                 img.save(self.icon.path)
+
+    def export_data(self):
+        rv = {}
+        rv['name'] = self.name
+        rv['icon_name'] = self.icon.name
+        if self.icon.name != '':
+            rv['icon_data'] = self.icon.open().read().hex()
+        else:
+            rv['icon_data'] = None
+        rv['url'] = self.url
+        rv['left'] = self.left
+        rv['sequence_number'] = self.sequence_number
+        return rv
+
+    def import_data(self, data):
+        self.name = data['name']
+        self.icon.name = data['icon_name']
+        if self.icon.name:
+            with self.icon.open('wb') as ih:
+                ih.write(bytes.fromhex(data['icon_data']))
+        self.url = data['url']
+        self.left = data['left']
+        self.sequence_number = data['sequence_number']
+        self.save()