1 files changed, 48 insertions, 2 deletions
diff --git a/ishtar_common/views.py b/ishtar_common/views.py
index f5a58afad..ac4e995d1 100644
--- a/ishtar_common/views.py
+++ b/ishtar_common/views.py
@@ -24,6 +24,7 @@ from jinja2 import TemplateSyntaxError
 import json
 import logging
 import os
+import re
 import unicodedata
 import urllib.parse
 
@@ -1115,11 +1116,11 @@ organization_merge = merge_action(
 )
 
 
-class IshtarMixin(object):
+class IshtarMixin:
     page_name = ""
 
     def get_context_data(self, **kwargs):
-        context = super(IshtarMixin, self).get_context_data(**kwargs)
+        context = super().get_context_data(**kwargs)
         context["page_name"] = self.page_name
         return context
 
@@ -1149,6 +1150,51 @@ class AdminLoginRequiredMixin(LoginRequiredMixin):
         return super(AdminLoginRequiredMixin, self).dispatch(request, *args, **kwargs)
 
 
+class ChangelogView(IshtarMixin, LoginRequiredMixin, TemplateView):
+    template_name = "ishtar/changelog.html"
+    page_name = _("Changelog")
+    current_url = "changelog"
+
+    def update_read_version(self):
+        if not self.request.user or not hasattr(self.request.user, "ishtaruser") \
+                or not self.request.user.ishtaruser:
+            return
+        cache_key = f"{settings.PROJECT_SLUG}-news-version"
+        current_version = cache.get(cache_key)
+        if not current_version:
+            return
+        ishtar_user = models.IshtarUser.objects.get(pk=self.request.user.ishtaruser.pk)
+        if not ishtar_user.latest_news_version \
+                or ishtar_user.latest_news_version != current_version:
+            ishtar_user.latest_news_version = current_version
+            ishtar_user.save()
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        changelog_dir = os.path.join(
+            settings.SHARE_BASE_PATH,
+             "changelog",
+             settings.LANGUAGE_CODE.split('-')[0]
+        )
+        if not os.path.exists(changelog_dir):
+            raise Http404()
+        page_number = int(kwargs.get("page", 0) or 0) or 1
+        if page_number == 1:
+            self.update_read_version()
+        changelog_file = os.path.join(changelog_dir, f"changelog_{page_number}.md")
+        if not os.path.exists(changelog_file):
+            raise Http404()
+        with open(changelog_file, "r") as changelog:
+            context["changelog"] = markdown(changelog.read())
+        if page_number > 1:
+            context["next"] = page_number - 1
+
+        changelog_file_next = os.path.join(changelog_dir, f"changelog_{page_number + 1}.md")
+        if os.path.exists(changelog_file_next):
+            context["previous"] = page_number + 1
+        return context
+
+
 class ProfileEdit(LoginRequiredMixin, FormView):
     template_name = "ishtar/forms/profile.html"
     form_class = forms.ProfilePersonForm