From 75c61818821cff171ca6bed644be138161e52e1f Mon Sep 17 00:00:00 2001
From: Sesostris Vieira <sesostris@interlegis.leg.br>
Date: Fri, 16 Oct 2015 14:36:12 -0300
Subject: [PATCH] Add Moodle webservice integration

---
 sigi/apps/utils/moodle_ws_api.py | 78 ++++++++++++++++++++++++++++++++
 sigi/settings/base.py            |  2 +
 sigi/settings/dev.py             |  3 ++
 3 files changed, 83 insertions(+)
 create mode 100644 sigi/apps/utils/moodle_ws_api.py

diff --git a/sigi/apps/utils/moodle_ws_api.py b/sigi/apps/utils/moodle_ws_api.py
new file mode 100644
index 0000000..d6764ea
--- /dev/null
+++ b/sigi/apps/utils/moodle_ws_api.py
@@ -0,0 +1,78 @@
+# -*- coding: utf-8 -*-
+#
+# sigi.apps.utils.moodle_ws_api
+#
+# Copyright (C) 2015  Interlegis
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+import json
+import urllib2
+from django.conf import settings
+
+def get_courses(ids=[], sort_order='', *args, **kwargs):
+    ''' Implements core_courses_get_courses function '''
+    
+    extra_filters = []
+    
+    for k, v in kwargs.items():
+        k = k.split('__')
+        field = k[0]
+        if len(k) == 1:
+            k[1] == 'eq'
+        filter = {'field': k[0]}
+        if k[1] == 'eq':
+            filter['function'] = '__eq__'
+        elif k[1] == 'ge':
+            filter['function'] = '__ge__'
+        elif k[1] == 'gt':
+            filter['function'] = '__gt__'
+        elif k[1] == 'le':
+            filter['function'] = '__le__'
+        elif k[1] == 'lt':
+            filter['function'] = '__lt__'
+        elif k[1] == 'ne':
+            filter['function'] = '__ne__'
+        else:
+            filter['function'] = k[1]
+        filter['value'] = v
+        extra_filters.append(filter)
+    
+    params = []
+    for i, id in enumerate(ids):
+        params.append('options[ids][%s]=%s' % (i, id))
+    params = '&'.join(params)
+    
+    url = '%s/%s?wstoken=%s&wsfunction=core_course_get_courses&moodlewsrestformat=json' % (
+            settings.SABERES_URL, settings.SABERES_REST_PATH, settings.SABERES_TOKEN)
+    
+    courses = json.loads(urllib2.urlopen(url, params).read())
+    
+    if 'errorcode' in courses:
+        raise Exception(courses['message'], courses['errorcode'])
+    
+    for filter in extra_filters:
+        courses = [c for c in courses 
+                   if getattr(c[filter['field']], filter['function'])(filter['value'])]
+    
+    if sort_order:
+        if sort_order[0] == '-': # Reverse order
+            sort_order = sort_order[1:]
+            courses.sort(key=lambda x: x[sort_order])
+            courses.reverse()
+        else:
+            courses.sort(key=lambda x: x[sort_order])
+            
+    return courses
\ No newline at end of file
diff --git a/sigi/settings/base.py b/sigi/settings/base.py
index f454837..105c851 100644
--- a/sigi/settings/base.py
+++ b/sigi/settings/base.py
@@ -176,3 +176,5 @@ LOGGING = {
         },
     },
 }
+
+SABERES_REST_PATH = 'webservice/rest/server.php'
\ No newline at end of file
diff --git a/sigi/settings/dev.py b/sigi/settings/dev.py
index e56934f..7bb99bc 100644
--- a/sigi/settings/dev.py
+++ b/sigi/settings/dev.py
@@ -38,3 +38,6 @@ CACHES = {
 PENTAHO_SERVER = 'http://localhost.com/pentaho/'
 PENTAHO_DASHBOARDS = ('saberes',)
 PENTAHO_USERNAME_PASSWORD = 'root@root'
+
+SABERES_URL = 'http://your-moodle-url.com'
+SABERES_TOKEN = 'token-generated-by-moodle-to-access-webservice-api'