From f1b402769ff8862efb28a64b9366f5b25d4e3ed3 Mon Sep 17 00:00:00 2001
From: boyska <piuttosto@logorroici.org>
Date: Wed, 3 May 2017 01:43:18 +0200
Subject: [PATCH] inizio a fare il plugin per i talk

---
 pelicanconf.py             |   2 +-
 plugins/talks.py           | 144 +++++++++++++++++++++++++++++++++++++
 requirements.txt           |   1 +
 talks/_templates/talk.html |  35 +++++++++
 4 files changed, 181 insertions(+), 1 deletion(-)
 create mode 100644 plugins/talks.py
 create mode 100644 talks/_templates/talk.html

diff --git a/pelicanconf.py b/pelicanconf.py
index 3d7b2e0..32b68b7 100644
--- a/pelicanconf.py
+++ b/pelicanconf.py
@@ -60,7 +60,7 @@ BOOTSTRAP_THEME = 'darkly'
 
 HIDE_SIDEBAR = True
 PLUGIN_PATHS = ['plugins']
-PLUGINS = ['langmenu']
+PLUGINS = ['langmenu', 'talks']
 
 MD_EXTENSIONS = ['toc']
 
diff --git a/plugins/talks.py b/plugins/talks.py
new file mode 100644
index 0000000..17e6b9e
--- /dev/null
+++ b/plugins/talks.py
@@ -0,0 +1,144 @@
+'''
+Manage talks scheduling in a semantic way
+'''
+
+from __future__ import print_function
+import os
+import io
+from functools import wraps
+import logging
+import re
+import datetime
+
+from docutils import nodes
+from docutils.parsers.rst import directives, Directive
+
+from pelican import signals, generators
+import jinja2
+
+
+TALKS_PATH = 'talks'
+
+
+def memoize(function):
+    '''decorators to cache'''
+    memo = {}
+
+    @wraps(function)
+    def wrapper(*args):
+        if args in memo:
+            return memo[args]
+        else:
+            rv = function(*args)
+            memo[args] = rv
+            return rv
+    return wrapper
+
+
+@memoize
+def get_talk_names():
+    return [name for name in os.listdir(TALKS_PATH)
+            if not name.startswith('_') and
+            get_talk_data(name) is not None
+            ]
+
+
+def warn(s):
+    print('WARN:', s)
+
+
+@memoize
+def get_talk_data(talkname):
+    fname = os.path.join(TALKS_PATH, talkname, 'meta.yaml')
+    if not os.path.isfile(fname):
+        return None
+    with io.open(fname, encoding='utf8') as buf:
+        data = yaml.load(buf)
+    if data is None:
+        return None
+    if 'title' not in data:
+        logging.warn("Talk <{}> has no `title` field".format(talkname))
+        data['title'] = talkname
+    if 'text' not in data:
+        logging.warn("Talk <{}> has no `text` field".format(talkname))
+        data['text'] = ''
+    if 'duration' not in data:
+        logging.warn("Talk <{}> has no `duration` field".format(talkname))
+        data['duration'] = 50
+    data['duration'] = int(data['duration'])
+    if 'room' not in data:
+        logging.warn("Talk <{}> has no `room` field".format(talkname))
+    if 'time' not in data or 'day' not in data:
+        logging.error("Talk <{}> has no `time` or `day`".format(talkname))
+    if 'time' in data:
+        timeparts = re.findall(r'\d+', str(data['time']))
+        if 4 > len(timeparts) > 0:
+            timeparts = [int(p) for p in timeparts]
+            data['time'] = datetime.time(*timeparts)
+        else:
+            logging.error("Talk <{}> has malformed `time`".format(talkname))
+    data['id'] = talkname
+    return data
+
+
+jinja_env = jinja2.Environment(
+    loader=jinja2.FileSystemLoader(os.path.join(TALKS_PATH, '_templates')),
+    autoescape=True,
+)
+
+
+class TalkListDirective(Directive):
+    required_arguments = 0
+    optional_arguments = 0
+    final_argument_whitespace = True
+    has_content = True
+
+    # TODO: use a jinja template
+    tmpl = u'''<div id="talk-{t[id]}">
+                      <h3 class="talk-title">{t[title]}</h3>
+                      <div class="talk-description">{t[text]}</div>
+                      </div>'''
+
+    def run(self):
+        tmpl = jinja_env.get_template('talk.html')
+        return [
+            nodes.raw('', tmpl.render(**get_talk_data(n)),
+                      format='html')
+            for n in get_talk_names()
+        ]
+
+
+class TalksGenerator(generators.Generator):
+    def __init__(self, *args, **kwargs):
+        self.talks = []
+        super(TalksGenerator, self).__init__(*args, **kwargs)
+
+    def generate_context(self):
+        self.talks.append('sblindola')
+        self.talks.append('tapioco')
+        if os.path.isdir(self.settings['TALKS_PATH']):
+            self.talks += os.listdir(self.settings['TALKS_PATH'])
+        self._update_context(('talks', ))
+
+
+def add_talks_option_defaults(pelican):
+    pelican.settings.setdefault('TALKS_PATH', TALKS_PATH)
+
+
+def get_generators(gen):
+    return TalksGenerator
+
+
+try:
+    import yaml
+except ImportError:
+    print('ERROR: yaml not found. Talks plugins will be disabled')
+
+    def register():
+        pass
+else:
+
+    def register():
+        #signals.get_generators.connect(get_generators)
+        signals.initialized.connect(add_talks_option_defaults)
+        directives.register_directive('talklist', TalkListDirective)
diff --git a/requirements.txt b/requirements.txt
index 12d13da..89e5a29 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,3 +12,4 @@ six==1.9.0
 smartypants==1.8.6
 typogrify==2.0.7
 Unidecode==0.4.17
+PyYAML==3.12
diff --git a/talks/_templates/talk.html b/talks/_templates/talk.html
new file mode 100644
index 0000000..55f35a4
--- /dev/null
+++ b/talks/_templates/talk.html
@@ -0,0 +1,35 @@
+<div id="talk-{{id}}">
+    <h3 class="talk-title">{{title}}</h3>
+    <div class="talk-info">
+    {% if time is defined and day is defined %}
+        {# Dai un nome meglio ai giorni #}
+        <p>Giorno {{day}} alle {{time}}</p>
+    {% else %}
+        <p><i>L'orario non è ancora stato fissato</i></p>
+    {% endif %}
+    {% if room is defined %}
+        <p>Stanza {{ room }}</p>
+    {% endif %}
+    </div>
+    <div class="talk-description">{{text}}</div>
+    {% if links is defined or resources is defined or mail is defined %}
+    <div class="talk-resources">
+        <h4>Link utili:</h4>
+        <ul>
+            {% if links is defined: %}
+                {% for link in links %}
+                    <li>{{link}}</li>
+                {% endfor %}
+            {% endif %}
+            {% if resources is defined: %}
+                <li><a href="{{resources}}">Materiali</a></li>
+            {% endif %}
+            {% if mail is defined: %}
+                <li><a href="{{mail}}">Mail</a></li>
+            {% endif %}
+        </ul>
+    {% endif %}
+    </div>
+</div>
+
+{# vim: set ft=jinja: #}