add export lesson command

[redakcja.git] / apps / catalogue / helpers.py

diff --git a/apps/catalogue/helpers.py b/apps/catalogue/helpers.py
index a97a040..060d106 100644 (file)
--- a/apps/catalogue/helpers.py
+++ b/apps/catalogue/helpers.py
@@ -1,13 +1,18 @@
+# -*- coding: utf-8 -*-
+import filecmp
+import json
+import re
 from datetime import date
 from functools import wraps
+from inspect import getargspec
+from os import listdir
 from os.path import join
-from os import listdir, stat
 from shutil import move, rmtree
-from django.conf import settings
-import re
-import filecmp
 
-from django.db.models import Count
+from django.conf import settings
+from django.http import HttpResponse
+from django.template import RequestContext
+from django.template.loader import render_to_string
 
 
 def active_tab(tab):
@@ -37,6 +42,60 @@ def cached_in_field(field_name):
     return decorator
 
 
+class AjaxError(Exception):
+    pass
+
+
+def ajax(method, template=None, login_required=False, permission_required=None):
+    def decorator(fun):
+        @wraps(fun)
+        def ajax_view(request):
+            kwargs = {}
+            request_params = None
+            if method == 'post':
+                request_params = request.POST
+            elif method == 'get':
+                request_params = request.GET
+            fun_params, xx, fun_kwargs, defaults = getargspec(fun)
+            if defaults:
+                required_params = fun_params[1:-len(defaults)]
+            else:
+                required_params = fun_params[1:]
+            missing_params = set(required_params) - set(request_params)
+            if missing_params:
+                res = {
+                    'result': 'error',
+                    'msg': 'missing params: %s' % ', '.join(missing_params),
+                }
+            else:
+                if request_params:
+                    request_params = dict(
+                        (key, json.loads(value))
+                        for key, value in request_params.iteritems()
+                        if fun_kwargs or key in fun_params)
+                    kwargs.update(request_params)
+                res = None
+                if login_required and not request.user.is_authenticated():
+                    res = {'result': 'error', 'msg': 'logout'}
+                if (permission_required and
+                        not request.user.has_perm(permission_required)):
+                    res = {'result': 'error', 'msg': 'access denied'}
+            if not res:
+                try:
+                    res = fun(request, **kwargs)
+                    if res and template:
+                        res = {'html': render_to_string(template, res, RequestContext(request))}
+                except AjaxError as e:
+                    res = {'result': e.args[0]}
+            if 'result' not in res:
+                res['result'] = 'ok'
+            return HttpResponse(json.dumps(res), content_type='application/json; charset=utf-8')
+
+        return ajax_view
+
+    return decorator
+
+
 def parse_isodate(isodate):
     try:
         return date(*[int(p) for p in isodate.split('-')])
@@ -46,8 +105,6 @@ def parse_isodate(isodate):
 
 class GalleryMerger(object):
     def __init__(self, dest_gallery, src_gallery):
-        assert isinstance(dest_gallery, str)
-        assert isinstance(src_gallery, str)
         self.dest = dest_gallery
         self.src = src_gallery
         self.dest_size = None
@@ -70,6 +127,11 @@ class GalleryMerger(object):
         m = not always and re.match(r"^([0-9])-", name)
         return "%1d-%s" % (prefix, m and name[2:] or name)
 
+    @property
+    def was_merged(self):
+        """Check if we have gallery size recorded"""
+        return self.dest_size is not None
+
     def merge(self):
         if not self.dest:
             return self.src
@@ -77,8 +139,10 @@ class GalleryMerger(object):
             return self.dest
 
         files = listdir(self.path(self.dest))
+        files.sort()
         self.dest_size = len(files)
         files_other = listdir(self.path(self.src))
+        files_other.sort()
         self.src_size = len(files_other)
 
         if files and files_other:
@@ -101,7 +165,8 @@ class GalleryMerger(object):
         for f in files:
             p = self.get_prefix(f)
             if p:
-                if p > last_pfx: last_pfx = p
+                if p > last_pfx:
+                    last_pfx = p
             else:
                 files_prefixed = False
                 break
@@ -117,7 +182,7 @@ class GalleryMerger(object):
         for f in files_other:
             pfx = self.get_prefix(f)
             if pfx is not None:
-                if not pfx in prefixes:
+                if pfx not in prefixes:
                     last_pfx += 1
                     prefixes[pfx] = last_pfx
                 renamed_files_other[f] = self.set_prefix(f, prefixes[pfx])
@@ -132,14 +197,10 @@ class GalleryMerger(object):
                 renamed_files_other[f] = self.set_prefix(f, 1, True)
 
         # finally, move / rename files.
-        from nose.tools import set_trace
-        #        set_trace()
         for frm, to in renamed_files.items():
-            move(join(self.path(self.dest), frm),
-                        join(self.path(self.dest), to))
+            move(join(self.path(self.dest), frm), join(self.path(self.dest), to))
         for frm, to in renamed_files_other.items():
-            move(join(self.path(self.src), frm),
-                        join(self.path(self.dest), to))            
+            move(join(self.path(self.src), frm), join(self.path(self.dest), to))
 
         rmtree(join(self.path(self.src)))
         return self.dest