From 60092220ca3c47a20f50b677a2bb2173ae3f89a3 Mon Sep 17 00:00:00 2001
From: Alban Gruin
Date: Mon, 27 Feb 2017 09:52:08 +0100
Subject: Parsage du nom des groupes basé sur une regex pour éviter les
 problèmes liés à l'ancienne méthode

---
 models.py | 22 +++++-----------------
 utils.py  | 15 +++++++++++++++
 2 files changed, 20 insertions(+), 17 deletions(-)

diff --git a/models.py b/models.py
index 1e96a88..478b48f 100644
--- a/models.py
+++ b/models.py
@@ -20,6 +20,8 @@ from django.db.models.expressions import RawSQL
 from django.db.models.functions import Extract, ExtractYear
 from django.utils.text import slugify
 
+from .utils import parse_group
+
 import hashlib
 import os
 
@@ -81,23 +83,9 @@ class Group(models.Model):
         return self.name
 
     def save(self, *args, **kwargs):
-        try:
-            parts = self.celcat_name.split("-")[-2:]
-            group = parts[1].strip()[2:]
-
-            self.mention = parts[0].strip()
-            self.subgroup = group[0]
-
-            if len(group) > 1:
-                self.td = int(group[1])
-            if len(group) > 2:
-                self.tp = int(group[2])
-        except:
-            print("Malformed name: {0}. Ignoring".format(self.celcat_name))
-        finally:
-            if self.name == "":
-                self.name = self.celcat_name
-
+        self.mention, self.subgroup, self.td, self.tp = parse_group(self.celcat_name)
+        if self.name == "":
+            self.name = self.celcat_name
             self.slug = slugify(self.name)
             super(Group, self).save()
 
diff --git a/utils.py b/utils.py
index 4ce3a21..090142b 100644
--- a/utils.py
+++ b/utils.py
@@ -17,6 +17,7 @@
 from django.utils import timezone
 
 import datetime
+import re
 
 def get_current_week():
     return timezone.now().isocalendar()[:2]
@@ -44,3 +45,17 @@ def group_courses(courses):
             grouped_courses[-1].append(course)
 
     return grouped_courses
+
+def parse_group(name):
+    group_regex = re.compile("^(.+?)\s*\-\s*(((CM)(\w))|((TD)(\w)(\d))|((TP)(\w)(\d)(\d)))$")
+    search = group_regex.search(name)
+    if search is None:
+        return None, None, None, None
+
+    parts = search.groups(0)
+    if parts[3] == "CM":
+        return parts[0], parts[4], None, None
+    elif parts[6] == "TD":
+        return parts[0], parts[7], parts[8], None
+    elif parts[10] == "TP":
+        return parts[0], parts[11], parts[12], parts[13]
-- 
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