From 55ab840bc8d7b28a38dd1c7398c673c5f4e74cfe Mon Sep 17 00:00:00 2001
From: boyska <piuttosto@logorroici.org>
Date: Sat, 9 Feb 2019 23:27:47 +0100
Subject: [PATCH] basic locale support for dates

---
 doc/source/install.rst                   | 14 ++++++++++++++
 larigira/config.py                       |  1 +
 larigira/dbadmin/templates/calendar.html |  3 ++-
 larigira/rpc.py                          |  9 +++++++++
 4 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/doc/source/install.rst b/doc/source/install.rst
index 611b3da..d16406b 100644
--- a/doc/source/install.rst
+++ b/doc/source/install.rst
@@ -131,3 +131,17 @@ UI_CALENDAR_FREQUENCY_THRESHOLD
 BOOTSTRAP_SERVE_LOCAL
     larigira can serve every js and css by itself. However, you might like to make the user download standard
     libraries from CDNs. In that case, set this variable to ``false``.
+
+Localization
+++++++++++++++
+
+Localization support in larigira is basic to say the least. However, something can be done.
+Dates (not consistently! sigh) are formatted according to locale.
+
+LARIGIRA_BABEL_DEFAULT_LOCALE
+    The short language code you want to use when the user doesn't specify any. Values are in the form
+    ``it``, ``en``, ``en-US``...
+LARIGIRA_UI_CALENDAR_DATE_FMT
+    The format to show in ``/db/calendar`` page. The format is specified `here <http://babel.pocoo.org/en/latest/dates.html>`_. Default is ``medium``.
+
+    As an example, ``eee dd LLL`` will show ``Sun 10 Mar`` for english, and ``dom 10 mar`` for italian.
diff --git a/larigira/config.py b/larigira/config.py
index cdfd1f2..53da879 100644
--- a/larigira/config.py
+++ b/larigira/config.py
@@ -31,6 +31,7 @@ def get_conf(prefix='LARIGIRA_'):
     conf['TMPDIR'] = os.getenv('TMPDIR', '/tmp/')
     conf['FILE_PATH_SUGGESTION'] = ()  # tuple of paths
     conf['UI_CALENDAR_FREQUENCY_THRESHOLD'] = 4*60*60  # 4 hours
+    conf['UI_CALENDAR_DATE_FMT'] = 'medium'
     conf['EVENT_FILTERS'] = []
     conf.update(from_envvars(prefix=prefix))
     return conf
diff --git a/larigira/dbadmin/templates/calendar.html b/larigira/dbadmin/templates/calendar.html
index a8f0621..6a4a77f 100644
--- a/larigira/dbadmin/templates/calendar.html
+++ b/larigira/dbadmin/templates/calendar.html
@@ -48,7 +48,8 @@ li.alarm .alarm-actions { display: none; }
 	{% for week, weekdays in weeks|dictsort %}
 	<div class="week row" id="week-{{week[0]}}-{{week[1]}}">
 	{% for day in weeks[week] %}
-	<div class="day col-lg-2 col-md-3 col-sm-6 col-xs-12"><h2>{{day}}</h2>
+	<div class="day col-lg-2 col-md-3 col-sm-6 col-xs-12">
+		<h2><time datetime="{{day}}">{{day|dateformat(config.UI_CALENDAR_DATE_FMT)}}</time></h2>
 		{% for t in days[day]|sort %}
 		<div>
 		<ul>
diff --git a/larigira/rpc.py b/larigira/rpc.py
index 3fb0e74..97aed06 100644
--- a/larigira/rpc.py
+++ b/larigira/rpc.py
@@ -6,6 +6,7 @@ from greenlet import greenlet
 from flask import current_app, Blueprint, Flask, jsonify, render_template, \
         request, abort
 from flask_bootstrap import Bootstrap
+from flask.ext.babel import Babel
 from werkzeug.contrib.cache import SimpleCache
 
 from .dbadmin import db
@@ -173,11 +174,19 @@ def rpc_wip():
                         ))
 
 
+def babel_get_locale():
+    if request.accept_languages:
+        return request.accept_languages[0][0]
+    return None
+
+
 def create_app(queue, larigira):
     app = Flask('larigira',
                 static_url_path=get_conf()['ROUTE_PREFIX'] + '/static')
     app.config.update(get_conf())
     Bootstrap(app)
+    babel = Babel(app)
+    babel.localeselector(babel_get_locale)
     app.register_blueprint(rpc)
     app.register_blueprint(viewui)
     app.register_blueprint(db)