From 1ca1929e2370b884861bf84dd7449b1169b96887 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=90=D0=BD=D1=82=D0=BE=D0=BD=20=D0=9A=D0=B0=D1=81=D0=B8?=
 =?UTF-8?q?=D0=BC=D0=BE=D0=B2?= <kasimov@radium-it.ru>
Date: Mon, 13 May 2019 20:39:54 +0300
Subject: [PATCH] =?UTF-8?q?=D0=94=D0=BE=D0=B1=D0=B0=D0=B2=D0=BB=D0=B5?=
 =?UTF-8?q?=D0=BD=D0=B8=D0=B5=20=D0=B3=D0=B5=D0=BD=D0=B5=D1=80=D0=B0=D1=82?=
 =?UTF-8?q?=D0=BE=D1=80=D0=B0=20Atom=20[closes=20#4]?=
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---
 flatfilecms/templates/atom.jinja2      | 38 ++++++++++++++++++++++++++
 flatfilecms/templates/base.jinja2      |  3 ++
 flatfilecms/templates/blogposts.jinja2 |  4 +++
 flatfilecms/views/__init__.py          | 19 ++++++-------
 4 files changed, 54 insertions(+), 10 deletions(-)
 create mode 100644 flatfilecms/templates/atom.jinja2

diff --git a/flatfilecms/templates/atom.jinja2 b/flatfilecms/templates/atom.jinja2
new file mode 100644
index 0000000..43c13ac
--- /dev/null
+++ b/flatfilecms/templates/atom.jinja2
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<feed xmlns="http://www.w3.org/2005/Atom" xml:base="{{data.base_url}}">
+  <title type="text">{{title}}</title>
+  {%- if subtitle %}
+  <subtitle type="html">{{subtitle}}</subtitle>
+  {%- endif %}
+  <link rel="self" href="{{request.path_qs}}"/>
+  {%- if alternate %}
+  <link rel="alternate" type="text/html" hreflang="{{request.locale_name}}" href="{{alternate}}"/>
+  {%- endif %}
+  <updated>{{(pages[0][1].page['updated'] or pages[0][1].page['published']).isoformat()}}+00:00</updated>
+  <id>urn:uuid:{{id}}</id>
+  <author>
+    <name>{{author['name']}}</name>
+  </author>
+  {%- if category %}
+  <category term="{{category}}"/>
+  {%- endif %}
+  <generator uri="https://trac.radium.group/flatfilecms/" version="1.0">flatfilecms</generator>
+  {%- for item in pages %}
+  <entry>
+    <title>{{item[1].page['title']}}</title>
+    <link href="{{item[0]}}"/>
+    <id>urn:uuid:{{item[1].page['id']}}</id>
+    <updated>{{(item[1].page['updated'] or item[1].page['published']).isoformat()}}+00:00</updated>
+    <published>{{item[1].page['published'].isoformat()}}+00:00</published>
+    <summary>{{item[1].page['summary'] or item[1].page['description']}}</summary>
+    {%- if item[1].page['author'] %}
+    <author>
+      <name>{{item[1].page['author']['name']}}</name>
+    </author>
+    {%- endif %}
+    {%- if item[1].page['category'] %}
+    <category term="{{item[1].page['category']}}"/>
+    {%- endif %}
+  </entry>
+  {%- endfor %}
+</feed>
diff --git a/flatfilecms/templates/base.jinja2 b/flatfilecms/templates/base.jinja2
index f4304cd..07b5fb6 100644
--- a/flatfilecms/templates/base.jinja2
+++ b/flatfilecms/templates/base.jinja2
@@ -12,6 +12,9 @@
     {% if amphtml is defined -%}
     <link rel="amphtml" href="{{amphtml}}">
     {% endif -%}
+    {% for link in alternate -%}
+    <link rel="{{link.type}}" title="{{link.title}}" href="{{link.href}}">
+    {% endfor -%}
     <title>{{title}}</title>
     {% block links %}
     {%- endblock %}
diff --git a/flatfilecms/templates/blogposts.jinja2 b/flatfilecms/templates/blogposts.jinja2
index 1aaa1cb..d7a8a05 100644
--- a/flatfilecms/templates/blogposts.jinja2
+++ b/flatfilecms/templates/blogposts.jinja2
@@ -17,4 +17,8 @@
 </div>
 {% endfor %}
 </div>
+{% set atom_feed = alternate|selectattr('type', 'equalto', 'application/atom+xml')|first -%}
+{% if atom_feed -%}
+<p>Подписаться на обновления: <a href="{{atom_feed.href}}"><i class="fas fa-rss"></i></a></p>
+{% endif -%}
 {% endblock %}
diff --git a/flatfilecms/views/__init__.py b/flatfilecms/views/__init__.py
index 82c4518..d671002 100644
--- a/flatfilecms/views/__init__.py
+++ b/flatfilecms/views/__init__.py
@@ -19,6 +19,7 @@ def set_content_type(self, content_type):
 
 def blog(self, options={}):
     path = options.get('base', '')
+    format = options.get('format', 'blogposts')
     root = find_root(self.context)
     tree = find_resource(root, path)
     postlist = []
@@ -27,19 +28,17 @@ def blog(self, options={}):
             postlist.append((f"{path}/{name}", item))
     post = self.context.page.copy()
     post['pages'] = sorted(
-        postlist,
-        key=lambda t: t[1].page['published'],
-        reverse=True)
+        postlist, key=lambda t: t[1].page['published'], reverse=True)
     if 'menu' not in post:
         post['menu'] = yaml.load(
             AssetResolver().resolve(
                 str(PurePath(self.context.data_path) /
                     'menu/default.yaml')).stream(),
             LoaderFactory(self.context.data_path))
-        return render_to_response(
-            '{0}.jinja2'.format(
-                post.get('template', 'blogposts')),
-            post,
-            request=self.request,
-            response=self.request.response
-        )
+    if format == 'atom':
+        set_content_type(self, 'application/atom+xml')
+    return render_to_response(
+        '{0}.jinja2'.format(post.get('template', format)),
+        post,
+        request=self.request,
+        response=self.request.response)