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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
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# aircox
Platform to manage radio programs, schedules, cms, etc. -- main test repo
# Applications
* **programs**: programs, episodes, schedules, sounds and tracks;
* **cms**: cms renderer
* **website**: the website using the cms and the programs
# Code and names conventions and uses
* absolute dates: datetime fields, named "begin" "end" for ranges and "date" otherwise
* time range: timefield name "duration"
* parents: when only one parent, named "parent", otherwise model/reference's name

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aircox/cms/__init__.py Normal file
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aircox/cms/admin.py Normal file
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from django.contrib import admin
# Register your models here.

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aircox/cms/models.py Normal file
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from django.db import models
from django.contrib.auth.models import User
from django.contrib.contenttypes.fields import GenericForeignKey
from django.contrib.contenttypes.models import ContentType
from django.utils import timezone
from django.utils.text import slugify
from django.utils.translation import ugettext as _, ugettext_lazy
from django.core.urlresolvers import reverse
from django.db.models.signals import post_init, post_save, post_delete
from django.dispatch import receiver
from taggit.managers import TaggableManager
class Post (models.Model):
thread_type = models.ForeignKey(
ContentType,
on_delete=models.SET_NULL,
blank = True, null = True
)
thread_pk = models.PositiveIntegerField(
blank = True, null = True
)
thread = GenericForeignKey('thread_type', 'thread_pk')
author = models.ForeignKey(
User,
verbose_name = _('author'),
blank = True, null = True,
)
date = models.DateTimeField(
_('date'),
default = timezone.datetime.now
)
published = models.BooleanField(
verbose_name = _('public'),
default = True
)
title = models.CharField (
_('title'),
max_length = 128,
)
content = models.TextField (
_('description'),
blank = True, null = True
)
image = models.ImageField(
blank = True, null = True
)
tags = TaggableManager(
_('tags'),
blank = True,
)
def detail_url (self):
return reverse(self._meta.verbose_name.lower() + '_detail',
kwargs = { 'pk': self.pk,
'slug': slugify(self.title) })
class Meta:
abstract = True
class Article (Post):
static_page = models.BooleanField(
_('static page'),
default = False,
)
focus = models.BooleanField(
_('article is focus'),
default = False,
)
class Meta:
verbose_name = _('Article')
verbose_name_plural = _('Articles')
class RelatedPostBase (models.base.ModelBase):
"""
Metaclass for RelatedPost children.
"""
registry = {}
@classmethod
def register (cl, key, model):
"""
Register a model and return the key under which it is registered.
Raise a ValueError if another model is yet associated under this key.
"""
if key in cl.registry and cl.registry[key] is not model:
raise ValueError('A model has yet been registered with "{}"'
.format(key))
cl.registry[key] = model
return key
@classmethod
def check_thread_mapping (cl, relation, model, field):
"""
Add information related to the mapping 'thread' info.
"""
if not field:
return
parent_model = model._meta.get_field(field).rel.to
thread_model = cl.registry.get(parent_model)
if not thread_model:
raise ValueError('no registered RelatedPost for the model {}'
.format(model.__name__))
relation.thread_model = thread_model
def __new__ (cl, name, bases, attrs):
rel = attrs.get('Relation')
rel = (rel and rel.__dict__) or {}
related_model = rel.get('model')
if related_model:
attrs['related'] = models.ForeignKey(related_model)
if not '__str__' in attrs:
attrs['__str__'] = lambda self: str(self.related)
if name is not 'RelatedPost':
_relation = RelatedPost.Relation()
_relation.__dict__.update(rel)
mapping = rel.get('mapping')
cl.check_thread_mapping(
_relation,
related_model,
mapping and mapping.get('thread')
)
attrs['_relation'] = _relation
model = super().__new__(cl, name, bases, attrs)
cl.register(related_model, model)
return model
class RelatedPost (Post, metaclass = RelatedPostBase):
"""
Use this post to generate Posts that are related to an external model. An
extra field "related" will be generated, and some bindings are possible to
update te related object on save if desired;
This is done through a class name Relation inside the declaration of the new
model.
"""
related = None
class Meta:
abstract = True
class Relation:
"""
Relation descriptor used to generate and manage the related object.
* model: model of the related object
* mapping: values that are bound between the post and the related
object. When the post is saved, these fields are updated on it.
It is a dict of { post_attr: rel_attr }
If there is a post_attr "thread", the corresponding rel_attr is used
to update the post thread to the correct Post model (in order to
establish a parent-child relation between two models)
* thread_model: generated by the metaclass that point to the
RelatedModel class related to the model that is the parent of
the current related one.
"""
model = None
mapping = None # values to map { post_attr: rel_attr }
thread = None
thread_model = None
def get_attribute (self, attr):
attr = self._relation.mappings.get(attr)
return self.related.__dict__[attr] if attr else None
def update_thread_mapping (self, save = True):
"""
Update the parent object designed by Relation.mapping.thread if the
type matches to the one related of the current instance's thread.
If there is no thread assigned to self, set it to the parent of the
related object.
"""
relation = self._relation
thread_model = relation.thread_model
if not thread_model:
return
# self.related.parent -> self.thread
rel_parent = relation.mapping.get('thread')
if not self.thread:
rel_parent = getattr(self.related, rel_parent)
thread = thread_model.objects.filter(related = rel_parent)
if thread.count():
self.thread = thread[0]
if save:
self.save()
return
# self.thread -> self.related.parent
if thread_model is not self.thread_type.model_class():
return
setattr(self.related, rel_parent, self.thread.related)
if save:
self.save()
def update_mapping (self):
relation = self._relation
mapping = relation.mapping
if not mapping:
return
related = self.related
related.__dict__.update({
rel_attr: self.__dict__[attr]
for attr, rel_attr in mapping.items()
if attr is not 'thread' and attr in self.__dict__
})
self.update_thread_mapping(save = False)
related.save()
def save (self, *args, **kwargs):
if not self.title and self.related:
self.title = self.get_attribute('title')
self.update_mapping()
super().save(*args, **kwargs)

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from django.conf.urls import url
from django.contrib.contenttypes.models import ContentType
from django.utils import timezone
from django.utils.translation import ugettext as _, ugettext_lazy
from website.models import *
from website.views import *
class Router:
registry = []
def register (self, route):
if not route in self.registry:
self.registry.append(route)
def register_set (self, view_set):
for url in view_set.urls:
self.register(url)
def unregister (self, route):
self.registry.remove(route)
def get_urlpatterns (self):
return [ url for url in self.registry ]
class Route:
"""
Base class for routing. Given a model, we generate url specific for each
route type. The generated url takes this form:
model_name + '/' + route_name + '/' + '/'.join(route_url_args)
Where model_name by default is the given model's verbose_name (uses plural if
Route is for a list).
The given view is considered as a django class view, and has view_
"""
name = None # route name
url_args = [] # arguments passed from the url [ (name : regex),... ]
@classmethod
def get_queryset (cl, website, model, request, **kwargs):
"""
Called by the view to get the queryset when it is needed
"""
pass
@classmethod
def get_object (cl, website, model, request, **kwargs):
"""
Called by the view to get the object when it is needed
"""
pass
@classmethod
def get_title (cl, model, request, **kwargs):
return ''
@classmethod
def get_view_name (cl, name):
return name + '_' + cl.name
@classmethod
def as_url (cl, name, model, view, view_kwargs = None):
pattern = '^{}/{}'.format(name, cl.name)
if cl.url_args:
url_args = '/'.join([
'(?P<{}>{}){}'.format(
arg, expr,
(optional and optional[0] and '?') or ''
)
for arg, expr, *optional in cl.url_args
])
pattern += '/' + url_args
pattern += '/?$'
kwargs = {
'route': cl,
}
if view_kwargs:
kwargs.update(view_kwargs)
return url(pattern, view, kwargs = kwargs,
name = cl.get_view_name(name))
class DetailRoute (Route):
name = 'detail'
url_args = [
('pk', '[0-9]+'),
('slug', '(\w|-|_)+', True),
]
@classmethod
def get_object (cl, website, model, request, pk, **kwargs):
return model.objects.get(pk = int(pk))
class AllRoute (Route):
name = 'all'
@classmethod
def get_queryset (cl, website, model, request, **kwargs):
return model.objects.all()
@classmethod
def get_title (cl, model, request, **kwargs):
return _('All %(model)s') % {
'model': model._meta.verbose_name_plural
}
class ThreadRoute (Route):
"""
Select posts using by their assigned thread.
- "thread_model" can be a string with the name of a registered item on
website or a model.
- "pk" is the pk of the thread item.
"""
name = 'thread'
url_args = [
('thread_model', '(\w|_|-)+'),
('pk', '[0-9]+'),
]
@classmethod
def get_queryset (cl, website, model, request, thread_model, pk, **kwargs):
if type(thread_model) is str:
thread_model = website.registry.get(thread_model)
if not thread_model:
return
thread_model = ContentType.objects.get_for_model(thread_model)
return model.objects.filter(
thread_type = thread_model,
thread_pk = int(pk)
)
class DateRoute (Route):
name = 'date'
url_args = [
('year', '[0-9]{4}'),
('month', '[0-9]{2}'),
('day', '[0-9]{1,2}'),
]
@classmethod
def get_queryset (cl, website, model, request, year, month, day, **kwargs):
return model.objects.filter(
date__year = int(year),
date__month = int(month),
date__day = int(day),
)
class SearchRoute (Route):
name = 'search'
@classmethod
def get_queryset (cl, website, model, request, q, **kwargs):
qs = model.objects
for search_field in model.search_fields or []:
r = model.objects.filter(**{ search_field + '__icontains': q })
if qs: qs = qs | r
else: qs = r
qs.distinct()
return qs

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body {
padding: 0;
margin: 0;
}
.page {
display: flex;
}
.page .menu {
width: 20em;
}
.page .menu_left { margin-right: 0.5em; }
.page .menu_right { margin-left: 0.5em; }
.page main {
flex-grow: 1;
}
.section {
vertical-align: top;
}
main .section {
width: calc(50% - 2em);
display: inline-block;
padding: 0.5em;
}
main .section .section_content {
font-size: 0.95em;
}
main .section h1 {
font-size: 1.2em;
}
main .section * {
max-width: 100%;
}
.post_item {
display: block;
}

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{% block pre_title %}
{% endblock %}
{% block title %}
{% endblock %}
{% block content %}
{% endblock %}

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<{{ tag }} class="section {{ classes }}"
{% for key, value in attrs.items %}{{ key }} = "{{ value|addslashes }}"
{% endfor %} >
{% block content %}
{{ content|safe }}
{% endblock %}
</{{ tag }}>

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{% load staticfiles %}
<html>
<head>
{# FIXME: page tags #}
<meta charset="utf-8">
<meta name="application-name" content="aircox-cms">
<meta name="description" content="{{ website.description }}">
<meta name="keywords" content="{{ website.tags }}">
<link rel="stylesheet" href="{% static "aircox_cms/styles.css" %}" type="text/css">
{% if website.styles %}
<link rel="stylesheet" href="{% static website.styles %}" type="text/css">
{% endif %}
<title>{{ website.name }} {% if title %}- {{ title }} {% endif %}</title>
</head>
<body>
{% block header %}
{% if menus.header %}
{{ menus.header|safe }}
{% endif %}
{% endblock %}
<div class="page-container">
{% if menus.top %}
{{ menus.top|safe }}
{% endif %}
<div class="page">
{% if menus.left %}
{{ menus.left|safe }}
{% endif %}
<main>
{% block pre_title %}
{% endblock %}
<h1>
{% block title %}
{{ title }}
{% endblock %}
</h1>
{% block post_title %}
{% endblock %}
<div class="content">
{% block content %}
{% endblock %}
</div>
</main>
{% if menus.right %}
{{ menus.right|safe }}
{% endif %}
</div>
{% if menus.page_bottom %}
{{ menus.page_bottom|safe }}
{% endif %}
</div>
{% block footer %}
{% if menus.footer %}
{{ menus.footer|safe }}
{% endif %}
{% endblock %}
{% if menus.bottom %}
{{ menus.bottom|safe }}
{% endif %}
</body>
</html>

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{% extends embed|yesno:"aircox_cms/base_content.html,aircox_cms/base_site.html" %}
{% block title %}
{{ object.title }}
{% endblock %}
{% block pre_title %}
<time datetime="{{ object.date }}">
{{ object.date|date:'l d F Y' }},
{{ object.date|time:'H\hi' }}
</time>
{% endblock %}
{% block content %}
{% for section in sections %}
{{ section|safe }}
{% endfor %}
{% endblock %}

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{# Used for embedded content #}
{% block content %}
{% endblock %}

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{% extends embed|yesno:"aircox_cms/base_content.html,aircox_cms/base_site.html" %}
{% load i18n %}
{% load thumbnail %}
{% block content %}
<div class="post_list {{ classes }} {% if embed %}embed{% endif %}">
{% for post in object_list %}
<a class="post_item"
href="{{ post.detail_url }}">
{% if 'date' in view.fields or 'time' in view.fields %}
<time datetime="{{ post.date }}" class="post_datetime">
{% if 'date' in view.fields %}
<span class="post_date">
{{ post.date|date:'D. d F' }}
</span>
{% endif %}
{% if 'time' in view.fields %}
<span class="post_time">
{{ post.date|date:'H:i' }}
</span>
{% endif %}
</time>
{% endif %}
{% if 'image' in view.fields %}
<img src="{% thumbnail post.image view.icon_size crop %}" class="post_image">
{% endif %}
{% if 'title' in view.fields %}
<h3 class="post_title">{{ post.title }}</h3>
{% endif %}
{% if 'content' in view.fields %}
<div class="post_content">
{{ post.content|safe|striptags|truncatechars:"64" }}
</div>
{% endif %}
</a>
{% endfor %}
</div>
<nav>
{% if embed %}
{% with view.get_url as list_url %}
{% if list_url %}
<a href="{{list_url}}" title="More elements">&#8690;</a>
{% endif %}
{% endwith %}
{% else %}
{% if page_obj.has_previous %}
<a href="?page={{ page_obj.previous_page_number }}">previous</a>
{% endif %}
<span class="current">
{{ page_obj.number }} / {{ page_obj.paginator.num_pages }}
</span>
{% if page_obj.has_next %}
<a href="?page={{ page_obj.next_page_number }}">next</a>
{% endif %}
{% endif %}
</nav>
{% endblock %}

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<{{ tag }} class="menu menu_{{ position }} {{ classes }}" {% if name %}
name="{{ name }}"
id="{{ name }}"
{% endif %}>
{% for section in sections %}
{{ section|safe }}
{% endfor %}
</{{ tag }}>

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{% extends "aircox_cms/base_section.html" %}
{% block content %}
{% if title %}
<h1>
{% block section_title %}
{{ title }}
{% endblock %}
</h1>
{% endif %}
{% if header %}
<header class="section_header">
{% block section_header %}
{{ header }}
{% endblock %}
</header>
{% endif %}
<div class="section_content">
{% block section_content %}
{{ content|safe }}
{% endblock %}
</div>
{% if footer %}
<footer class="section_footer">
{% block section_footer %}
{{ footer }}
{% endblock %}
</footer>
{% endif %}
{% endblock %}

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{% extends "aircox_cms/section.html" %}
{% load thumbnail %}
{% block section_content %}
<ul style="padding:0; margin:0">
{% for item in object_list %}
<li>
{% if item.url %}
<a href="{{item.url}}">
{% endif %}
{% if use_icons and item.icon %}
<img src="{% thumbnail item.icon icon_size crop %}" class="icon">
{% endif %}
{{ item.title }}
{% if item.text %}
<small>{{ item.text }}</small>
{% endif %}
{% if item.url %}
</a>
{% endif %}
</li>
{% endfor %}
</ul>
{% endblock %}

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!_TAG_FILE_FORMAT 2 /extended format; --format=1 will not append ;" to lines/
!_TAG_FILE_SORTED 1 /0=unsorted, 1=sorted, 2=foldcase/
!_TAG_PROGRAM_AUTHOR Darren Hiebert /dhiebert@users.sourceforge.net/
!_TAG_PROGRAM_NAME Exuberant Ctags //
!_TAG_PROGRAM_URL http://ctags.sourceforge.net /official site/
!_TAG_PROGRAM_VERSION 5.8 //

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from django.test import TestCase
# Create your tests here.

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aircox/cms/utils.py Normal file
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from django.contrib.contenttypes.models import ContentType
from django.core.urlresolvers import reverse
def get_url (website, route, model, kwargs):
name = website.name_of_model(model)
if not name:
return
name = route.get_view_name(name)
return reverse(name, kwargs = kwargs)
def filter_thread (qs, object):
model_type = ContentType.objects.get_for_model(object.__class__)
return qs.filter(
thread_pk = object.pk,
thread_type__pk = model_type.pk
)

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import re
from django.templatetags.static import static
from django.shortcuts import render
from django.template.loader import render_to_string
from django.views.generic import ListView, DetailView
from django.views.generic.base import View, TemplateResponseMixin
from django.core.paginator import Paginator
from django.core import serializers
from django.utils.translation import ugettext as _, ugettext_lazy
from django.utils.html import escape
import aircox.cms.routes as routes
import aircox.cms.utils as utils
class PostBaseView:
website = None # corresponding website
title = '' # title of the page
embed = False # page is embed (if True, only post content is printed
classes = '' # extra classes for the content
def get_base_context (self, **kwargs):
"""
Return a context with all attributes of this classe plus 'view' set
to self.
"""
context = {
k: getattr(self, k)
for k, v in PostBaseView.__dict__.items()
if not k.startswith('__')
}
if not self.embed:
context['menus'] = {
k: v.get(self.request, website = self.website, **kwargs)
for k, v in {
k: self.website.get_menu(k)
for k in self.website.menu_layouts
}.items() if v
}
context['view'] = self
return context
class PostListView (PostBaseView, ListView):
"""
List view for posts and children
"""
class Query:
"""
Request availables parameters
"""
embed = False # view is embedded (only the list is shown)
exclude = None # exclude item of this id
order = 'desc' # order of the list when query
fields = None # fields to show
page = 1 # page number
q = None # query search
def __init__ (self, query):
if query:
self.update(query)
def update (self, query):
my_class = self.__class__
if type(query) is my_class:
self.__dict__.update(query.__dict__)
return
self.__dict__.update(query)
template_name = 'aircox_cms/list.html'
allow_empty = True
paginate_by = 50
model = None
route = None
query = None
fields = [ 'date', 'time', 'image', 'title', 'content' ]
icon_size = '64x64'
def __init__ (self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.query = PostListView.Query(self.query)
def dispatch (self, request, *args, **kwargs):
self.route = self.kwargs.get('route') or self.route
return super().dispatch(request, *args, **kwargs)
def get_queryset (self):
if self.route:
qs = self.route.get_queryset(self.website, self.model, self.request,
**self.kwargs)
else:
qs = self.queryset or self.model.objects.all()
query = self.query
query.update(self.request.GET)
if query.exclude:
qs = qs.exclude(id = int(exclude))
if query.embed:
self.embed = True
if query.order == 'asc':
qs.order_by('date', 'id')
else:
qs.order_by('-date', '-id')
if query.fields:
self.fields = [
field for field in query.fields
if field in self.__class__.fields
]
return qs
def get_context_data (self, **kwargs):
context = super().get_context_data(**kwargs)
context.update(self.get_base_context(**kwargs))
context.update({
'title': self.get_title(),
})
return context
def get_title (self):
if self.title:
return self.title
title = self.route and self.route.get_title(self.model, self.request,
**self.kwargs)
return title
def get_url (self):
if self.route:
return utils.get_urls(self.website, self.route,
self.model, self.kwargs)
return ''
class PostDetailView (DetailView, PostBaseView):
"""
Detail view for posts and children
"""
template_name = 'aircox_cms/detail.html'
sections = []
def __init__ (self, sections = None, *args, **kwargs):
super().__init__(*args, **kwargs)
self.sections = sections or []
def get_queryset (self):
if self.request.GET.get('embed'):
self.embed = True
if self.model:
return super().get_queryset().filter(published = True)
return []
def get_object (self, **kwargs):
if self.model:
object = super().get_object(**kwargs)
if object.published:
return object
return None
def get_context_data (self, **kwargs):
context = super().get_context_data(**kwargs)
context.update(self.get_base_context())
context.update({
'sections': [
section.get(self.request, website = self.website, **kwargs)
for section in self.sections
]
})
return context
class Menu (View):
template_name = 'aircox_cms/menu.html'
name = ''
tag = 'nav'
enabled = True
classes = ''
position = '' # top, left, bottom, right, header, footer, page_top, page_bottom
sections = None
def __init__ (self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.name = self.name or ('menu_' + self.position)
def get_context_data (self, **kwargs):
return {
'name': self.name,
'tag': self.tag,
'classes': self.classes,
'position': self.position,
'sections': [
section.get(self.request, website = self.website,
object = None, **kwargs)
for section in self.sections
]
}
def get (self, request, website, **kwargs):
self.request = request
self.website = website
context = self.get_context_data(**kwargs)
return render_to_string(self.template_name, context)
class BaseSection (View):
"""
Base class for sections. Sections are view that can be used in detail view
in order to have extra content about a post, or in menus.
"""
template_name = 'aircox_cms/base_section.html'
kwargs = None # kwargs argument passed to get
tag = 'div' # container tags
classes = '' # container classes
attrs = '' # container extra attributes
content = '' # content
visible = True # if false renders an empty string
def get_context_data (self):
return {
'view': self,
'tag': self.tag,
'classes': self.classes,
'attrs': self.attrs,
'visible': self.visible,
'content': self.content,
}
def get (self, request, website, **kwargs):
self.request = request
self.website = website
self.kwargs = kwargs
context = self.get_context_data()
# get_context_data may call extra function that can change visibility
if self.visible:
return render_to_string(self.template_name, context)
return ''
class Section (BaseSection):
"""
A Section that can be related to an object.
"""
template_name = 'aircox_cms/section.html'
object = None
object_required = False
title = ''
header = ''
footer = ''
def get_context_data (self):
context = super().get_context_data()
context.update({
'title': self.title,
'header': self.header,
'footer': self.footer,
})
return context
def get (self, request, object = None, **kwargs):
self.object = object or self.object
if self.object_required and not self.object:
raise ValueError('object is required by this Section but not given')
return super().get(request, **kwargs)
class Sections:
class Image (BaseSection):
"""
Render an image with the given relative url.
"""
url = None
@property
def content (self):
return '<img src="{}">'.format(
static(self.url),
)
class PostContent (Section):
"""
Render the content of the Post (format the text a bit and escape HTML
tags).
"""
@property
def content (self):
content = escape(self.object.content)
content = re.sub(r'(^|\n\n)((\n?[^\n])+)', r'<p>\2</p>', content)
content = re.sub(r'\n', r'<br>', content)
return content
class PostImage (Section):
"""
Render the image of the Post
"""
@property
def content (self):
return '<img src="{}" class="post_image">'.format(
self.object.image.url
)
class List (Section):
"""
Section to render list. The context item 'object_list' is used as list of
items to render.
"""
class Item:
icon = None
title = None
text = None
url = None
def __init__ (self, icon, title = None, text = None, url = None):
self.icon = icon
self.title = title
self.text = text
hide_empty = False # hides the section if the list is empty
use_icons = True # print icons
paginate_by = 0 # number of items
icon_size = '32x32' # icons size
template_name = 'aircox_cms/section_list.html'
def get_object_list (self):
return []
def get_context_data (self, **kwargs):
object_list = self.get_object_list()
self.visibility = True
if not object_list and hide_empty:
self.visibility = False
context = super().get_context_data(**kwargs)
context.update({
'classes': context.get('classes') + ' section_list',
'icon_size': self.icon_size,
'object_list': object_list,
'paginate_by': self.paginate_by,
})
return context
class Urls (List):
"""
Render a list of urls of targets that are Posts
"""
classes = 'section_urls'
targets = None
def get_object_list (self):
return [
List.Item(
target.image or None,
target.title,
url = target.detail_url(),
)
for target in self.targets
]
class Posts (PostBaseView, Section):
"""
Render a list using PostListView's template.
"""
embed = True
paginate_by = 5
icon_size = '64x64'
fields = [ 'date', 'time', 'image', 'title', 'content' ]
def get_url (self):
return ''
def get_object_list (self):
return []
def render_list (self):
self.embed = True
context = self.get_base_context(**self.kwargs)
context.update({
'object_list': self.get_object_list(),
'embed': True,
'paginate_by': self.paginate_by,
})
return render_to_string(PostListView.template_name, context)
def get_context_data (self, **kwargs):
context = super().get_context_data(**kwargs)
context['content'] = self.render_list()
return context

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import aircox.cms.routes as routes
import aircox.cms.views as views
class Website:
name = ''
domain = ''
description = 'An aircox website' # public description (used in meta info)
tags = 'aircox,radio,music' # public keywords (used in meta info)
styles = '' # relative url to stylesheet file
menus = None # list of menus
menu_layouts = ['top', 'left', # available positions
'right', 'bottom',
'header', 'footer']
router = None
urls = []
registry = {}
def __init__ (self, **kwargs):
self.registry = {}
self.urls = []
self.__dict__.update(kwargs)
def name_of_model (self, model):
for name, _model in self.registry.items():
if model is _model:
return name
def register_model (self, name, model):
"""
Register a model and return the name under which it is registered.
Raise a ValueError if another model is yet associated under this name.
"""
if name in self.registry and self.registry[name] is not model:
raise ValueError('A model has yet been registered under "{}"'
.format(name))
self.registry[name] = model
return name
def register_detail (self, name, model, view = views.PostDetailView,
**view_kwargs):
"""
Register a model and the detail view
"""
name = self.register_model(name, model)
view = view.as_view(
website = self,
model = model,
**view_kwargs,
)
self.urls.append(routes.DetailRoute.as_url(name, model, view))
self.registry[name] = model
def register_list (self, name, model, view = views.PostListView,
routes = [], **view_kwargs):
"""
Register a model and the given list view using the given routes
"""
name = self.register_model(name, model)
view = view.as_view(
website = self,
model = model,
**view_kwargs
)
self.urls += [ route.as_url(name, model, view) for route in routes ]
self.registry[name] = model
def register (self, name, model, sections = None, routes = None,
list_kwargs = {}, detail_kwargs = {}):
if sections:
self.register_detail(
name, model,
sections = sections,
**detail_kwargs
)
if routes:
self.register_list(
name, model,
routes = routes,
**list_kwargs
)
def get_menu (self, position):
"""
Get an enabled menu by its position
"""
for menu in self.menus:
if menu.enabled and menu.position == position:
self.check_menu_tag(menu)
return menu
def check_menu_tag (self, menu):
"""
Update menu tag if it is a footer or a header
"""
if menu.position in ('footer','header'):
menu.tag = menu.position
if menu.position in ('left', 'right'):
menu.tag = 'side'

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# Aircox LiquidSoap
This application makes the bridge between Aircox and LiquidSoap. It can monitor scheduled and streamed programs and offer some controls on LiquidSoap.
## manage.py's commands
** liquidsoap **: monitor LiquidSoap, logs what is playing on the different sources, and plays scheduled diffusions;
** liquidsoap_files**: generates playlists and LiquidSoap config based on Programs' parameters;
## Requirements
* Liquidsoap
* requirements.txt for python's dependencies

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aircox/liquidsoap/__init__.py Normal file
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aircox/liquidsoap/admin.py Normal file
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from django.contrib import admin
# Register your models here.

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aircox/liquidsoap/management/commands/liquidsoap.py Normal file
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"""
Monitor Liquidsoap's sources, logs, and even print what's on air.
"""
import time
from argparse import RawTextHelpFormatter
from django.core.management.base import BaseCommand, CommandError
from django.utils import timezone as tz
import aircox.liquidsoap.settings as settings
import aircox.liquidsoap.utils as utils
import aircox.programs.models as models
class Command (BaseCommand):
help= __doc__
output_dir = settings.AIRCOX_LIQUIDSOAP_MEDIA
def add_arguments (self, parser):
parser.formatter_class=RawTextHelpFormatter
parser.add_argument(
'-o', '--on_air', action='store_true',
help='Print what is on air'
)
parser.add_argument(
'-m', '--monitor', action='store_true',
help='Runs in monitor mode'
)
parser.add_argument(
'-d', '--delay', type=int,
default=1000,
help='Time to sleep in milliseconds before update on monitor'
)
def handle (self, *args, **options):
connector = utils.Connector()
self.monitor = utils.Monitor(connector)
self.monitor.update()
if options.get('on_air'):
for id, controller in self.monitor.controller.items():
print(id, controller.on_air)
if options.get('monitor'):
delay = options.get('delay') / 1000
while True:
for controller in self.monitor.controllers.values():
try:
controller.monitor()
except Exception, e:
print(e)
time.sleep(delay)

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"""
Generate configuration files and playlists for liquidsoap using settings, streams and
so on
"""
import os
import re
from argparse import RawTextHelpFormatter
from django.core.management.base import BaseCommand, CommandError
from django.views.generic.base import View
from django.template.loader import render_to_string
import aircox.liquidsoap.settings as settings
import aircox.liquidsoap.utils as utils
import aircox.programs.settings as programs_settings
import aircox.programs.models as models
class Command (BaseCommand):
help= __doc__
output_dir = settings.AIRCOX_LIQUIDSOAP_MEDIA
def add_arguments (self, parser):
parser.formatter_class=RawTextHelpFormatter
parser.add_argument(
'output', metavar='PATH', type=str, nargs='?',
help='force output to file (- to stdout) for single actions; to a '
'given dir when using --all')
parser.add_argument(
'-c', '--config', action='store_true',
help='Generate liquidsoap config file'
)
parser.add_argument(
'-d', '--diffusion', action='store_true',
help='Generate the playlist for the current scheduled diffusion'
)
parser.add_argument(
'-s', '--stream', type=int,
help='Generate the playlist of a stream with the given id'
)
parser.add_argument(
'-S', '--streams', action='store_true',
help='Generate all stream playlists'
)
parser.add_argument(
'-a', '--all', action='store_true',
help='Generate all playlists (stream and scheduled diffusion) '
'and config file'
)
def handle (self, *args, **options):
output = options.get('output') or None
if options.get('config'):
data = self.get_config(output = output)
return
if options.get('stream'):
stream = options['stream']
if type(stream) is int:
stream = models.Stream.objects.get(id = stream,
program__active = True)
data = self.get_playlist(stream, output = output)
return
if options.get('all') or options.get('streams'):
if output:
if not os.path.isdir(output):
raise CommandError('given output is not a directory')
self.output_dir = output
if options.get('all'):
self.handle(config = True)
for stream in models.Stream.objects.filter(program__active = True):
self.handle(stream = stream)
self.output_dir = settings.AIRCOX_LIQUIDSOAP_MEDIA
return
raise CommandError('nothing to do')
def print (self, data, path, default):
if path and path == '-':
print(data)
return
if not path:
path = os.path.join(self.output_dir, default)
with open(path, 'w+') as file:
file.write(data)
def get_config (self, output = None):
context = {
'monitor': utils.Monitor(),
'settings': settings,
}
data = render_to_string('aircox_liquidsoap/config.liq', context)
data = re.sub(r'\s*\\\n', r'#\\n#', data)
data = data.replace('\n', '')
data = re.sub(r'#\\n#', '\n', data)
self.print(data, output, 'aircox.liq')
def get_playlist (self, stream = None, output = None):
program = stream.program
source = utils.Source(program = program)
sounds = models.Sound.objects.filter(
# good_quality = True,
type = models.Sound.Type['archive'],
path__startswith = os.path.join(
programs_settings.AIRCOX_SOUND_ARCHIVES_SUBDIR,
program.path
)
)
data = '\n'.join(sound.path for sound in sounds)
self.print(data, output, utils.Source(program = program).path)

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from django.db import models

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aircox/liquidsoap/settings.py Normal file
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from django.conf import settings
def ensure (key, default):
globals()[key] = getattr(settings, key, default)
ensure('AIRCOX_LIQUIDSOAP_SOCKET', '/tmp/liquidsoap.sock')
# dict of values to set (do not forget to escape chars)
ensure('AIRCOX_LIQUIDSOAP_SET', {
'log.file.path': '"/tmp/liquidsoap.log"',
})
# security source: used when no source are available
ensure('AIRCOX_LIQUIDSOAP_SECURITY_SOURCE', '/media/data/musique/creation/Mega Combi/MegaCombi241-PT134-24062015_Comme_des_lyca_ens.mp3')
# start the server on monitor if not present
ensure('AIRCOX_LIQUIDSOAP_AUTOSTART', True)
# output directory for the generated files
ensure('AIRCOX_LIQUIDSOAP_MEDIA', '/tmp')

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aircox/liquidsoap/templates/aircox_liquidsoap/base_source.html Normal file
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{% with metadata=source.metadata %}
<div class="source {% if metadata.initial_uri == controller.master.metadata.initial_uri %}on_air{% endif %}">
<h2>{{ source.name }}</h2>
<time>{{ metadata.on_air }}</time>
<span class="path">{{ metadata.initial_uri }}</span>
<span class="status" status="{{ metadata.status }}">{{ metadata.status }}</span>
<button onclick="liquid_action('{{controller.id}}','{{source.id}}','skip');">
skip
</button>
</div>
{% endwith %}

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aircox/liquidsoap/templates/aircox_liquidsoap/config.liq Normal file
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{# Utilities #}
def interactive_source (id, s, ) = \
s = store_metadata(id=id, size=1, s) \
add_skip_command(s) \
s \
end \
\
def stream (id, file) = \
s = playlist(id = '#{id}_playlist', mode = "random", file) \
interactive_source(id, s) \
end \
\
{# Config #}
set("server.socket", true) \
set("server.socket.path", "{{ settings.AIRCOX_LIQUIDSOAP_SOCKET }}") \
{% for key, value in settings.AIRCOX_LIQUIDSOAP_SET.items %}
set("{{ key|safe }}", {{ value|safe }}) \
{% endfor %}
\
\
{% for controller in monitor.controllers.values %}
{% include 'aircox_liquidsoap/station.liq' %} \
{{ controller.id }} = make_station_{{ controller.id }}() \
output.alsa({{ controller.id }}) \
{% endfor %}

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{% if not embed %}
<html>
<head>
<style>
.station {
margin: 2em;
border: 1px grey solid;
}
.sources {
padding: 0.5em;
box-shadow: inset 0.1em 0.1em 0.5em rgba(0, 0, 0, 0.5);
}
.station h1 {
font-size: 1.2em;
margin: 0.2em;
}
.source {
border-left: 0.5em solid grey;
font-size: 0.9em;
}
.on_air {
display: block;
border-left: 0.5em solid #f00;
}
.source h2 {
display: inline-block;
min-width: 10em;
font-size: 1em;
margin: 0.2em;
}
.source time {
display: inline-block;
margin-right: 2em;
}
.source span {
font-size: 1em;
}
.error {
padding: 0.2em;
color: red;
font-weight: bold;
}
</style>
<script>
function get_token() {
return document.cookie.replace(/.*csrftoken=([^;]+)(;.*|$)/, '$1');
}
function liquid_action (controller, source, action) {
params = 'controller=' + controller + '&&source=' + source +
'&&action=' + action;
req = new XMLHttpRequest()
req.open('POST', '{% url 'liquid-controller' %}', false);
req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
req.setRequestHeader("Content-length", params.length);
req.setRequestHeader("Connection", "close");
req.setRequestHeader("X-CSRFToken", get_token());
req.send(params);
liquid_update()
}
function liquid_update (update) {
req = new XMLHttpRequest()
req.open('GET', '{% url 'liquid-controller' %}?embed', true);
req.onreadystatechange = function() {
if(req.readyState != 4 || (req.status != 200 && req.status != 0))
return;
document.getElementById('liquid-stations').innerHTML =
req.responseText;
if(update)
window.setTimeout(function() { liquid_update(update);}, 5000);
};
req.send();
}
liquid_update(true);
</script>
</head>
<body>
<main id="liquid-stations">
{% endif %}
{% for c_id, controller in monitor.controllers.items %}
{% with on_air=controller.on_air %}
<div id="{{ c_id }}" class="station">
<header>
{% if not controller.connector.available %}
<span class="error" style="float:right;">disconnected</span>
{% endif %}
<h1>
{{ controller.station.name }}
</h1>
</header>
<div class="sources">
{% with source=controller.master %}
{% include 'aircox_liquidsoap/base_source.html' %}
{% endwith %}
{% with source=controller.dealer %}
{% include 'aircox_liquidsoap/base_source.html' %}
{% endwith %}
{% for source in controller.streams.values %}
{% include 'aircox_liquidsoap/base_source.html' %}
{% endfor %}
</div>
<div class="next">
{% for diffusion in controller.next_diffusions %}
{{ diffusion }}
{% endfor %}
</div>
</div>
{% endwith %}
{% endfor %}
{% if not embed %}
</main>
</body>
</html>
{% endif %}

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{% comment %}
A station has multiple sources:
- dealer: a controlled playlist playing once each track, that reloads on file
change. This is used for scheduled sounds.
- streams: a rotate source with all playlists
- single: security song
{% endcomment %}
def make_station_{{ controller.id }} () = \
{# dealer #}
{% with source=controller.dealer %}
{% if source %}
dealer = interactive_source('{{ source.id }}', playlist.once( \
reload_mode='watch', \
"{{ source.path }}", \
)) \
\
dealer_on = interactive.bool("{{ source.id }}_on", false) \
{% endif %}
{% endwith %}
\
{# streams #}
streams = interactive_source("streams", rotate([ \
{% for source in controller.streams.values %}
{% with info=source.stream_info %}
{% if info.delay %}
delay({{ info.delay }}., stream("{{ source.id }}", "{{ source.path }}")), \
{% elif info.begin and info.end %}
at({ {{info.begin}}-{{info.end}} }, stream("{{ source.id }}", "{{ source.path }}")), \
{% endif %}
{% endwith %}
{% endfor %}
{% for source in controller.streams.values %}
{% if not source.stream_info %}
stream("{{ source.id }}", "{{ source.path }}"), \
{% endif %}
{% endfor %}
])) \
\
{# station #}
interactive_source ( \
"{{ controller.id }}", \
fallback(track_sensitive = false, [ \
at(dealer_on, dealer), \
streams, \
{% if controller.station.fallback %}
single("{{ controller.station.fallback }}"), \
{% else %}
blank(), \
{% endif %}
]) \
) \
end \

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from django.test import TestCase
# Create your tests here.

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aircox/liquidsoap/urls.py Normal file
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from django.conf.urls import url
import aircox.liquidsoap.views as views
urlpatterns = [
url('^controller/', views.LiquidControl.as_view(), name = 'liquid-controller'),
]

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import os
import socket
import re
import json
from django.utils.translation import ugettext as _, ugettext_lazy
from django.utils import timezone as tz
from aircox.programs.utils import to_timedelta
import aircox.programs.models as models
import aircox.liquidsoap.settings as settings
class Connector:
"""
Telnet connector utility.
address: a string to the unix domain socket file, or a tuple
(host, port) for TCP/IP connection
"""
__socket = None
__available = False
address = settings.AIRCOX_LIQUIDSOAP_SOCKET
@property
def available (self):
return self.__available
def __init__ (self, address = None):
if address:
self.address = address
def open (self):
if self.__available:
return
try:
family = socket.AF_INET if type(self.address) in (tuple, list) else \
socket.AF_UNIX
self.__socket = socket.socket(family, socket.SOCK_STREAM)
self.__socket.connect(self.address)
self.__available = True
except:
# print('can not connect to liquidsoap socket {}'.format(self.address))
self.__available = False
return -1
def send (self, *data, try_count = 1, parse = False, parse_json = False):
if self.open():
return ''
data = bytes(''.join([str(d) for d in data]) + '\n', encoding='utf-8')
try:
reg = re.compile(r'(.*)\s+END\s*$')
self.__socket.sendall(data)
data = ''
while not reg.search(data):
data += self.__socket.recv(1024).decode('unicode_escape')
if data:
data = reg.sub(r'\1', data)
data = data.strip()
if parse:
data = self.parse(data)
elif parse_json:
data = self.parse_json(data)
return data
except:
self.__available = False
if try_count > 0:
return self.send(data, try_count - 1)
def parse (self, string):
string = string.split('\n')
data = {}
for line in string:
line = re.search(r'(?P<key>[^=]+)="?(?P<value>([^"]|\\")+)"?', line)
if not line:
continue
line = line.groupdict()
data[line['key']] = line['value']
return data
def parse_json (self, string):
try:
if string[0] == '"' and string[-1] == '"':
string = string[1:-1]
return json.loads(string) if string else None
except:
return None
class Source:
"""
A structure that holds informations about a LiquidSoap source.
"""
controller = None
program = None
metadata = None
def __init__ (self, controller = None, program = None):
self.controller = controller
self.program = program
@property
def station (self):
"""
Proxy to self.(program|controller).station
"""
return self.program.station if self.program else \
self.controller.station
@property
def connector (self):
"""
Proxy to self.controller.connector
"""
return self.controller.connector
@property
def id (self):
"""
Identifier for the source, scoped in the station's one
"""
postfix = ('_stream_' + str(self.program.id)) if self.program else ''
return self.station.slug + postfix
@property
def name (self):
"""
Name of the related object (program or station)
"""
if self.program:
return self.program.name
return self.station.name
@property
def path (self):
"""
Path to the playlist
"""
return os.path.join(
settings.AIRCOX_LIQUIDSOAP_MEDIA,
self.id + '.m3u'
)
@property
def playlist (self):
"""
Get or set the playlist as an array, and update it into
the corresponding file.
"""
try:
with open(self.path, 'r') as file:
return file.readlines()
except:
return []
@playlist.setter
def playlist (self, sounds):
with open(self.path, 'w') as file:
file.write('\n'.join(sounds))
self.connector.send(self.name, '_playlist.reload')
@property
def current_sound (self):
self.update()
return self.metadata.get('initial_uri') if self.metadata else {}
def stream_info (self):
"""
Return a dict with info related to the program's stream
"""
if not self.program:
return
stream = models.Stream.objects.get(program = self.program)
if not stream.begin and not stream.delay:
return
def to_seconds (time):
return 3600 * time.hour + 60 * time.minute + time.second
return {
'begin': stream.begin.strftime('%Hh%M') if stream.begin else None,
'end': stream.end.strftime('%Hh%M') if stream.end else None,
'delay': to_seconds(stream.delay) if stream.delay else None
}
def skip (self):
"""
Skip a given source. If no source, use master.
"""
self.connector.send(self.id, '.skip')
def update (self, metadata = None):
"""
Update metadata with the given metadata dict or request them to
liquidsoap if nothing is given.
Return -1 in case no update happened
"""
if metadata is not None:
source = metadata.get('source') or ''
if self.program and not source.startswith(self.id):
return -1
self.metadata = metadata
return
# r = self.connector.send('var.get ', self.id + '_meta', parse_json=True)
r = self.connector.send(self.id, '.get', parse=True)
return self.update(metadata = r or {})
class Master (Source):
"""
A master Source
"""
def update (self, metadata = None):
if metadata is not None:
return super().update(metadata)
r = self.connector.send('request.on_air')
r = self.connector.send('request.metadata ', r, parse = True)
return self.update(metadata = r or {})
class Dealer (Source):
"""
The Dealer source is a source that is used for scheduled diffusions and
manual sound diffusion.
"""
name = _('Dealer')
@property
def id (self):
return self.station.slug + '_dealer'
def stream_info (self):
pass
@property
def on (self):
r = self.connector.send('var.get ', self.id, '_on')
return (r == 'true')
@on.setter
def on (self, value):
return self.connector.send('var.set ', self.id, '_on',
'=', 'true' if value else 'false')
@property
def playlist (self):
try:
with open(self.path, 'r') as file:
return file.readlines()
except:
return []
@playlist.setter
def playlist (self, sounds):
with open(self.path, 'w') as file:
file.write('\n'.join(sounds))
def __get_next (self, date, on_air):
"""
Return which diffusion should be played now and not playing
"""
r = [ models.Diffusion.get_prev(self.station, date),
models.Diffusion.get_next(self.station, date) ]
r = [ diffusion.prefetch_related('sounds')[0]
for diffusion in r if diffusion.count() ]
for diffusion in r:
duration = to_timedelta(diffusion.archives_duration())
end_at = diffusion.date + duration
if end_at < date:
continue
diffusion.playlist = [ sound.path
for sound in diffusion.get_archives() ]
if diffusion.playlist and on_air not in diffusion.playlist:
return diffusion
def monitor (self):
"""
Monitor playlist (if it is time to load) and if it time to trigger
the button to start a diffusion.
"""
playlist = self.playlist
on_air = self.current_sound
now = tz.make_aware(tz.datetime.now())
diff = self.__get_next(now, on_air)
if not diff:
return # there is nothing we can do
# playlist reload
if self.playlist != diff.playlist:
if not playlist or on_air == playlist[-1] or \
on_air not in playlist:
self.on = False
self.playlist = diff.playlist
# run the diff
if self.playlist == diff.playlist and diff.date <= now:
self.on = True
for source in self.controller.streams.values():
source.skip()
self.controller.log(
source = self.id,
date = now,
comment = 'trigger the scheduled diffusion to liquidsoap; '
'skip all other streams',
related_object = diff,
)
class Controller:
connector = None
station = None # the related station
master = None # master source (station's source)
dealer = None # dealer source
streams = None # streams streams
@property
def on_air (self):
return self.master
@property
def id (self):
return self.master and self.master.id
@property
def name (self):
return self.master and self.master.name
def __init__ (self, station, connector = None):
"""
use_connector: avoids the creation of a Connector, in case it is not needed
"""
self.connector = connector
self.station = station
self.station.controller = self
self.master = Master(self)
self.dealer = Dealer(self)
self.streams = {
source.id : source
for source in [
Source(self, program)
for program in models.Program.objects.filter(station = station,
active = True)
if program.stream_set.count()
]
}
def get (self, source_id):
"""
Get a source by its id
"""
if source_id == self.master.id:
return self.master
if source_id == self.dealer.id:
return self.dealer
return self.streams.get(source_id)
def log (self, **kwargs):
"""
Create a log using **kwargs, and print info
"""
log = models.Log(**kwargs)
log.save()
log.print()
def update_all (self):
"""
Fetch and update all streams metadata.
"""
self.master.update()
self.dealer.update()
for source in self.streams.values():
source.update()
def __change_log (self, source):
last_log = models.Log.objects.filter(
source = source.id,
).prefetch_related('sound').order_by('-date')
on_air = source.current_sound
if not on_air:
return
if last_log:
last_log = last_log[0]
if last_log.sound and on_air == last_log.sound.path:
return
self.log(
source = source.id,
date = tz.make_aware(tz.datetime.now()),
comment = 'sound has changed',
related_object = models.Sound.objects.get(path = on_air),
)
def monitor (self):
"""
Log changes in the streams, and call dealer.monitor.
"""
if not self.connector.available and self.connector.open():
return
self.dealer.monitor()
self.__change_log(self.dealer)
for source in self.streams.values():
self.__change_log(source)
class Monitor:
"""
Monitor multiple controllers.
"""
controllers = None
def __init__ (self, connector = None):
self.controllers = {
controller.id : controller
for controller in [
Controller(station, connector)
for station in models.Station.objects.filter(active = True)
]
}
def update (self):
for controller in self.controllers.values():
controller.update_all()

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import re
from django.views.generic.base import View, TemplateResponseMixin
from django.template.loader import render_to_string
from django.shortcuts import render
from django.http import HttpResponse
import aircox.liquidsoap.settings as settings
import aircox.liquidsoap.utils as utils
import aircox.programs.models as models
view_monitor = utils.Monitor(
utils.Connector(address = settings.AIRCOX_LIQUIDSOAP_SOCKET)
)
class Actions:
@classmethod
def exec (cl, monitor, controller, source, action):
controller = monitor.controllers.get(controller)
source = controller and controller.get(source)
if not controller or not source or \
action.startswith('__') or \
action not in cl.__dict__:
return -1
action = getattr(Actions, action)
return action(monitor, controller, source)
@classmethod
def skip (cl, monitor, controller, source):
source.skip()
class LiquidControl (View):
template_name = 'aircox_liquidsoap/controller.html'
def get_context_data (self, **kwargs):
view_monitor.update()
return {
'request': self.request,
'monitor': view_monitor,
'embed': 'embed' in self.request.GET,
}
def post (self, request = None, **kwargs):
if 'action' in request.POST:
POST = request.POST
controller = POST.get('controller')
source = POST.get('source')
action = POST.get('action')
Actions.exec(view_monitor, controller, source, action)
return HttpResponse('')
def get (self, request = None, **kwargs):
self.request = request
context = self.get_context_data(**kwargs)
return render(request, self.template_name, context)

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# Aircox Programs
This application defines all base models and basic control of them. We have:
* **Nameable**: generic class used in any class needing to be named. Includes some utility functions;
* **Program**: the program itself;
* **Diffusion**: occurrence of a program planified in the timetable. For rerun, informations are bound to the initial diffusion;
* **Schedule**: describes diffusions frequencies for each program;
* **Track**: track informations in a playlist of a diffusion;
* **Sound**: information about a sound that can be used for podcast or rerun;
* **Log**: logs
## Architecture
A Station is basically an object that represent a radio station. On each station, we use the Program object, that is declined in two different type:
* **Scheduled**: the diffusion is based on a timetable and planified through one Schedule or more; Diffusion object represent the occurrence of these programs;
* **Streamed**: the diffusion is based on random playlist, used to fill gaps between the programs;
Each program has a directory in **AIRCOX_PROGRAMS_DIR**; For each, subdir:
* **archives**: complete episode record, can be used for diffusions or as a podcast
* **excerpts**: excerpt of an episode, or other elements, can be used as a podcast
## manage.py's commands
* **diffusions_monitor**: update/create, check and clean diffusions; When a diffusion is created, its type is unconfirmed, and requires a manual approval to be on the timetable.
* **sound_monitor**: check for existing and missing sounds files in programs directories and synchronize the database. Can also check for the quality of file and synchronize the database according to them.
* **sound_quality_check**: check for the quality of the file (don't update database)
## Requirements
* Sox (and soxi): sound file monitor and quality check
* requirements.txt for python's dependecies

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import copy
from django import forms
from django.contrib import admin
from django.db import models
from aircox.programs.models import *
#
# Inlines
#
class SoundInline (admin.TabularInline):
model = Sound
class ScheduleInline (admin.TabularInline):
model = Schedule
extra = 1
class StreamInline (admin.TabularInline):
fields = ['delay', 'begin', 'end']
model = Stream
extra = 1
# from suit.admin import SortableTabularInline, SortableModelAdmin
#class TrackInline (SortableTabularInline):
# fields = ['artist', 'name', 'tags', 'position']
# form = TrackForm
# model = Track
# sortable = 'position'
# extra = 10
class NameableAdmin (admin.ModelAdmin):
fields = [ 'name' ]
list_display = ['id', 'name']
list_filter = []
search_fields = ['name',]
@admin.register(Sound)
class SoundAdmin (NameableAdmin):
fields = None
list_display = ['id', 'name', 'duration', 'type', 'mtime', 'good_quality', 'removed', 'public']
fieldsets = [
(None, { 'fields': NameableAdmin.fields + ['path', 'type'] } ),
(None, { 'fields': ['embed', 'duration', 'mtime'] }),
(None, { 'fields': ['removed', 'good_quality', 'public' ] } )
]
readonly_fields = ('path', 'duration',)
@admin.register(Stream)
class StreamAdmin (admin.ModelAdmin):
list_display = ('id', 'program', 'delay', 'begin', 'end')
@admin.register(Station)
class StationAdmin (NameableAdmin):
fields = NameableAdmin.fields + [ 'active', 'public', 'fallback' ]
@admin.register(Program)
class ProgramAdmin (NameableAdmin):
fields = NameableAdmin.fields + [ 'station', 'active' ]
# TODO list_display
inlines = [ ScheduleInline, StreamInline ]
# SO#8074161
#def get_form (self, request, obj=None, **kwargs):
#if obj:
# if Schedule.objects.filter(program = obj).count():
# self.inlines.remove(StreamInline)
# elif Stream.objects.filter(program = obj).count():
# self.inlines.remove(ScheduleInline)
#return super().get_form(request, obj, **kwargs)
@admin.register(Diffusion)
class DiffusionAdmin (admin.ModelAdmin):
def archives (self, obj):
sounds = [ str(s) for s in obj.get_archives()]
return ', '.join(sounds) if sounds else ''
def conflicts (self, obj):
if obj.type == Diffusion.Type['unconfirmed']:
return ', '.join([ str(d) for d in obj.get_conflicts()])
return ''
list_display = ('id', 'type', 'date', 'program', 'initial', 'archives', 'conflicts')
list_filter = ('type', 'date', 'program')
list_editable = ('type', 'date')
fields = ['type', 'date', 'initial', 'program', 'sounds']
def get_form(self, request, obj=None, **kwargs):
if request.user.has_perm('aircox_program.programming'):
self.readonly_fields = []
else:
self.readonly_fields = ['program', 'date', 'duration']
if obj.initial:
self.readonly_fields += ['program', 'sounds']
return super().get_form(request, obj, **kwargs)
def get_queryset(self, request):
qs = super(DiffusionAdmin, self).get_queryset(request)
if '_changelist_filters' in request.GET or \
'type__exact' in request.GET and \
str(Diffusion.Type['unconfirmed']) in request.GET['type__exact']:
return qs
return qs.exclude(type = Diffusion.Type['unconfirmed'])
@admin.register(Log)
class LogAdmin (admin.ModelAdmin):
list_display = ['id', 'date', 'source', 'comment', 'related_object']
list_filter = ['date', 'related_type']
admin.site.register(Track)
admin.site.register(Schedule)

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"""
Manage diffusions using schedules, to update, clean up or check diffusions.
A generated diffusion can be unconfirmed, that means that the user must confirm
it by changing its type to "normal". The behaviour is controlled using
--approval.
Different actions are available:
- "update" is the process that is used to generated them using programs
schedules for the (given) month.
- "clean" will remove all diffusions that are still unconfirmed and have been
planified before the (given) month.
- "check" will remove all diffusions that are unconfirmed and have been planified
from the (given) month and later.
"""
from argparse import RawTextHelpFormatter
from django.core.management.base import BaseCommand, CommandError
from django.utils import timezone as tz
from aircox.programs.models import *
class Actions:
@staticmethod
def __check_conflicts (item, saved_items):
"""
Check for conflicts, and update conflictual
items if they have been generated during this
update.
Return the number of conflicts
"""
conflicts = item.get_conflicts()
if not conflicts:
item.type = Diffusion.Type['normal']
return 0
item.type = Diffusion.Type['unconfirmed']
for conflict in conflicts:
if conflict.pk in saved_items and \
conflict.type != Diffusion.Type['unconfirmed']:
conflict.type = Diffusion.Type['unconfirmed']
conflict.save()
return len(conflicts)
@classmethod
def update (cl, date, mode):
manual = (mode == 'manual')
if not manual:
saved_items = set()
count = [0, 0]
for schedule in Schedule.objects.filter(program__active = True) \
.order_by('initial'):
# in order to allow rerun links between diffusions, we save items
# by schedule;
items = schedule.diffusions_of_month(date, exclude_saved = True)
count[0] += len(items)
if manual:
Diffusion.objects.bulk_create(items)
else:
for item in items:
count[1] += cl.__check_conflicts(item, saved_items)
item.save()
saved_items.add(item)
print('> {} new diffusions for schedule #{} ({})'.format(
len(items), schedule.id, str(schedule)
))
print('total of {} diffusions have been created,'.format(count[0]),
'do not forget manual approval' if manual else
'{} conflicts found'.format(count[1]))
@staticmethod
def clean (date):
qs = Diffusion.objects.filter(type = Diffusion.Type['unconfirmed'],
date__lt = date)
print('{} diffusions will be removed'.format(qs.count()))
qs.delete()
@staticmethod
def check (date):
qs = Diffusion.objects.filter(type = Diffusion.Type['unconfirmed'],
date__gt = date)
items = []
for diffusion in qs:
schedules = Schedule.objects.filter(program = diffusion.program)
for schedule in schedules:
if schedule.match(diffusion.date):
break
else:
print('> #{}: {}'.format(diffusion.pk, str(diffusion)))
items.append(diffusion.id)
print('{} diffusions will be removed'.format(len(items)))
if len(items):
Diffusion.objects.filter(id__in = items).delete()
class Command (BaseCommand):
help= __doc__
def add_arguments (self, parser):
parser.formatter_class=RawTextHelpFormatter
now = tz.datetime.today()
group = parser.add_argument_group('action')
group.add_argument(
'--update', action='store_true',
help='generate (unconfirmed) diffusions for the given month. '
'These diffusions must be confirmed manually by changing '
'their type to "normal"')
group.add_argument(
'--clean', action='store_true',
help='remove unconfirmed diffusions older than the given month')
group.add_argument(
'--check', action='store_true',
help='check future unconfirmed diffusions from the given date '
'agains\'t schedules and remove it if that do not match any '
'schedule')
group = parser.add_argument_group('date')
group.add_argument(
'--year', type=int, default=now.year,
help='used by update, default is today\'s year')
group.add_argument(
'--month', type=int, default=now.month,
help='used by update, default is today\'s month')
group = parser.add_argument_group('mode')
group.add_argument(
'--approval', type=str, choices=['manual', 'auto'],
default='auto',
help='manual means that all generated diffusions are unconfirmed, '
'thus must be approved manually; auto confirmes all '
'diffusions except those that conflicts with others'
)
def handle (self, *args, **options):
date = tz.datetime(year = options.get('year'),
month = options.get('month'),
day = 1)
date = tz.make_aware(date)
if options.get('update'):
Actions.update(date, mode = options.get('mode'))
elif options.get('clean'):
Actions.clean(date)
elif options.get('check'):
Actions.check(date)
else:
raise CommandError('no action has been given')

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"""
Monitor sound files; For each program, check for:
- new files;
- deleted files;
- differences between files and sound;
- quality of the files;
It tries to parse the file name to get the date of the diffusion of an
episode and associate the file with it; We use the following format:
yyyymmdd[_n][_][name]
Where:
'yyyy' the year of the episode's diffusion;
'mm' the month of the episode's diffusion;
'dd' the day of the episode's diffusion;
'n' the number of the episode (if multiple episodes);
'name' the title of the sound;
To check quality of files, call the command sound_quality_check using the
parameters given by the setting AIRCOX_SOUND_QUALITY. This script requires
Sox (and soxi).
"""
import os
import re
import subprocess
from argparse import RawTextHelpFormatter
from django.core.management.base import BaseCommand, CommandError
from aircox.programs.models import *
import aircox.programs.settings as settings
import aircox.programs.utils as utils
class Command (BaseCommand):
help= __doc__
def report (self, program = None, component = None, *content):
if not component:
print('{}: '.format(program), *content)
else:
print('{}, {}: '.format(program, component), *content)
def add_arguments (self, parser):
parser.formatter_class=RawTextHelpFormatter
parser.add_argument(
'-q', '--quality_check', action='store_true',
help='Enable quality check using sound_quality_check on all ' \
'sounds marqued as not good'
)
parser.add_argument(
'-s', '--scan', action='store_true',
help='Scan programs directories for changes, plus check for a '
' matching episode on sounds that have not been yet assigned'
)
def handle (self, *args, **options):
if options.get('scan'):
self.scan()
if options.get('quality_check'):
self.check_quality(check = (not options.get('scan')) )
def _get_duration (self, path):
p = subprocess.Popen(['soxi', '-D', path], stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
out, err = p.communicate()
if not err:
return utils.seconds_to_time(int(float(out)))
def get_sound_info (self, program, path):
"""
Parse file name to get info on the assumption it has the correct
format (given in Command.help)
"""
file_name = os.path.basename(path)
file_name = os.path.splitext(file_name)[0]
r = re.search('^(?P<year>[0-9]{4})'
'(?P<month>[0-9]{2})'
'(?P<day>[0-9]{2})'
'(_(?P<n>[0-9]+))?'
'_?(?P<name>.*)$',
file_name)
if not (r and r.groupdict()):
self.report(program, path, "file path is not correct, use defaults")
r = {
'name': file_name
}
else:
r = r.groupdict()
r['duration'] = self._get_duration(path)
r['name'] = r['name'].replace('_', ' ').capitalize()
r['path'] = path
return r
def find_initial (self, program, sound_info):
"""
For a given program, and sound path check if there is an initial
diffusion to associate to, using the diffusion's date.
If there is no matching episode, return None.
"""
# check on episodes
diffusion = Diffusion.objects.filter(
program = program,
date__year = int(sound_info['year']),
date__month = int(sound_info['month']),
date__day = int(sound_info['day'])
)
if not diffusion.count():
self.report(program, sound_info['path'],
'no diffusion found for the given date')
return
return diffusion[0]
@staticmethod
def check_sounds (qs):
"""
Only check for the sound existence or update
"""
# check files
for sound in qs:
if sound.check_on_file():
sound.save(check = False)
def scan (self):
"""
For all programs, scan dirs
"""
print('scan files for all programs...')
programs = Program.objects.filter()
for program in programs:
print('- program', program.name)
self.scan_for_program(
program, settings.AIRCOX_SOUND_ARCHIVES_SUBDIR,
type = Sound.Type['archive'],
)
self.scan_for_program(
program, settings.AIRCOX_SOUND_EXCERPTS_SUBDIR,
type = Sound.Type['excerpt'],
)
def scan_for_program (self, program, subdir, **sound_kwargs):
"""
Scan a given directory that is associated to the given program, and
update sounds information.
"""
print(' - scan files in', subdir)
if not program.ensure_dir(subdir):
return
subdir = os.path.join(program.path, subdir)
# new/existing sounds
for path in os.listdir(subdir):
path = os.path.join(subdir, path)
if not path.endswith(settings.AIRCOX_SOUND_FILE_EXT):
continue
sound_info = self.get_sound_info(program, path)
sound = Sound.objects.get_or_create(
path = path,
defaults = { 'name': sound_info['name'],
'duration': sound_info['duration'] or None }
)[0]
sound.__dict__.update(sound_kwargs)
sound.save(check = False)
# initial diffusion association
if 'year' in sound_info:
initial = self.find_initial(program, sound_info)
if initial:
if initial.initial:
# FIXME: allow user to overwrite rerun info?
self.report(program, path,
'the diffusion must be an initial diffusion')
else:
sound = initial.sounds.get_queryset() \
.filter(path == sound.path)
if not sound:
self.report(program, path,
'add sound to diffusion ', initial.id)
initial.sounds.add(sound)
initial.save()
self.check_sounds(Sound.objects.filter(path__startswith = subdir))
def check_quality (self, check = False):
"""
Check all files where quality has been set to bad
"""
import aircox.programs.management.commands.sounds_quality_check \
as quality_check
sounds = Sound.objects.filter(good_quality = False)
if check:
self.check_sounds(sounds)
files = [ sound.path for sound in sounds if not sound.removed ]
else:
files = [ sound.path for sound in sounds.filter(removed = False) ]
print('start quality check...')
cmd = quality_check.Command()
cmd.handle( files = files,
**settings.AIRCOX_SOUND_QUALITY )
print('- update sounds in database')
def update_stats(sound_info, sound):
stats = sound_info.get_file_stats()
if stats:
duration = int(stats.get('length'))
sound.duration = utils.seconds_to_time(duration)
for sound_info in cmd.good:
sound = Sound.objects.get(path = sound_info.path)
sound.good_quality = True
update_stats(sound_info, sound)
sound.save(check = False)
for sound_info in cmd.bad:
sound = Sound.objects.get(path = sound_info.path)
update_stats(sound_info, sound)
sound.save(check = False)

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"""
Analyse and check files using Sox, prints good and bad files.
"""
import sys
import re
import subprocess
from argparse import RawTextHelpFormatter
from django.core.management.base import BaseCommand, CommandError
class Stats:
attributes = [
'DC offset', 'Min level', 'Max level',
'Pk lev dB', 'RMS lev dB', 'RMS Pk dB',
'RMS Tr dB', 'Flat factor', 'Length s',
]
def __init__ (self, path, **kwargs):
"""
If path is given, call analyse with path and kwargs
"""
self.values = {}
if path:
self.analyse(path, **kwargs)
def get (self, attr):
return self.values.get(attr)
def parse (self, output):
for attr in Stats.attributes:
value = re.search(attr + r'\s+(?P<value>\S+)', output)
value = value and value.groupdict()
if value:
try:
value = float(value.get('value'))
except ValueError:
value = None
self.values[attr] = value
self.values['length'] = self.values['Length s']
def analyse (self, path, at = None, length = None):
"""
If at and length are given use them as excerpt to analyse.
"""
args = ['sox', path, '-n']
if at is not None and length is not None:
args += ['trim', str(at), str(length) ]
args.append('stats')
p = subprocess.Popen(args, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
# sox outputs to stderr (my god WHYYYY)
out_, out = p.communicate()
self.parse(str(out, encoding='utf-8'))
class Sound:
path = None # file path
sample_length = 120 # default sample length in seconds
stats = None # list of samples statistics
bad = None # list of bad samples
good = None # list of good samples
def __init__ (self, path, sample_length = None):
self.path = path
self.sample_length = sample_length if sample_length is not None \
else self.sample_length
def get_file_stats (self):
return self.stats and self.stats[0]
def analyse (self):
print('- complete file analysis')
self.stats = [ Stats(self.path) ]
position = 0
length = self.stats[0].get('length')
if not self.sample_length:
return
print('- samples analysis: ', end=' ')
while position < length:
print(len(self.stats), end=' ')
stats = Stats(self.path, at = position, length = self.sample_length)
self.stats.append(stats)
position += self.sample_length
print()
def check (self, name, min_val, max_val):
self.good = [ index for index, stats in enumerate(self.stats)
if min_val <= stats.get(name) <= max_val ]
self.bad = [ index for index, stats in enumerate(self.stats)
if index not in self.good ]
self.resume()
def resume (self):
view = lambda array: [
'file' if index is 0 else
'sample {} (at {} seconds)'.format(index, (index-1) * self.sample_length)
for index in array
]
if self.good:
print('- good:\033[92m', ', '.join( view(self.good) ), '\033[0m')
if self.bad:
print('- bad:\033[91m', ', '.join( view(self.bad) ), '\033[0m')
class Command (BaseCommand):
help = __doc__
sounds = None
def add_arguments (self, parser):
parser.formatter_class=RawTextHelpFormatter
parser.add_argument(
'files', metavar='FILE', type=str, nargs='+',
help='file(s) to analyse'
)
parser.add_argument(
'-s', '--sample_length', type=int, default=120,
help='size of sample to analyse in seconds. If not set (or 0), does'
' not analyse by sample',
)
parser.add_argument(
'-a', '--attribute', type=str,
help='attribute name to use to check, that can be:\n' + \
', '.join([ '"{}"'.format(attr) for attr in Stats.attributes ])
)
parser.add_argument(
'-r', '--range', type=float, nargs=2,
help='range of minimal and maximal accepted value such as: ' \
'--range min max'
)
parser.add_argument(
'-i', '--resume', action='store_true',
help='print a resume of good and bad files'
)
def handle (self, *args, **options):
# parameters
minmax = options.get('range')
if not minmax:
raise CommandError('no range specified')
attr = options.get('attribute')
if not attr:
raise CommandError('no attribute specified')
# sound analyse and checks
self.sounds = [ Sound(path, options.get('sample_length'))
for path in options.get('files') ]
self.bad = []
self.good = []
for sound in self.sounds:
print(sound.path)
sound.analyse()
sound.check(attr, minmax[0], minmax[1])
print()
if sound.bad:
self.bad.append(sound)
else:
self.good.append(sound)
# resume
if options.get('resume'):
if self.good:
print('files that did not failed the test:\033[92m\n ',
'\n '.join([sound.path for sound in self.good]), '\033[0m')
if self.bad:
# bad at the end for ergonomy
print('files that failed the test:\033[91m\n ',
'\n '.join([sound.path for sound in self.bad]),'\033[0m')

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import os
from django.db import models
from django.template.defaultfilters import slugify
from django.utils.translation import ugettext as _, ugettext_lazy
from django.utils import timezone as tz
from django.utils.html import strip_tags
from django.contrib.contenttypes.fields import GenericForeignKey
from django.contrib.contenttypes.models import ContentType
from taggit.managers import TaggableManager
import aircox.programs.utils as utils
import aircox.programs.settings as settings
def date_or_default (date, date_only = False):
"""
Return date or default value (now) if not defined, and remove time info
if date_only is True
"""
date = date or tz.datetime.today()
if not tz.is_aware(date):
date = tz.make_aware(date)
if date_only:
return date.replace(hour = 0, minute = 0, second = 0, microsecond = 0)
return date
class Nameable (models.Model):
name = models.CharField (
_('name'),
max_length = 128,
)
@property
def slug (self):
"""
Slug based on the name. We replace '-' by '_'
"""
return slugify(self.name).replace('-', '_')
def __str__ (self):
#if self.pk:
# return '#{} {}'.format(self.pk, self.name)
return '{}'.format(self.name)
class Meta:
abstract = True
class Track (Nameable):
"""
Track of a playlist of a diffusion. The position can either be expressed
as the position in the playlist or as the moment in seconds it started.
"""
# There are no nice solution for M2M relations ship (even without
# through) in django-admin. So we unfortunately need to make one-
# to-one relations and add a position argument
diffusion = models.ForeignKey(
'Diffusion',
)
artist = models.CharField(
_('artist'),
max_length = 128,
)
# position can be used to specify a position in seconds for non-
# stop programs or a position in the playlist
position = models.SmallIntegerField(
default = 0,
help_text=_('position in the playlist'),
)
tags = TaggableManager(
verbose_name=_('tags'),
)
def __str__(self):
return ' '.join([self.artist, ':', self.name ])
class Meta:
verbose_name = _('Track')
verbose_name_plural = _('Tracks')
class Sound (Nameable):
"""
A Sound is the representation of a sound file that can be either an excerpt
or a complete archive of the related diffusion.
The podcasting and public access permissions of a Sound are managed through
the related program info.
"""
Type = {
'other': 0x00,
'archive': 0x01,
'excerpt': 0x02,
}
for key, value in Type.items():
ugettext_lazy(key)
type = models.SmallIntegerField(
verbose_name = _('type'),
choices = [ (y, x) for x,y in Type.items() ],
blank = True, null = True
)
path = models.FilePathField(
_('file'),
path = settings.AIRCOX_PROGRAMS_DIR,
match = r'(' + '|'.join(settings.AIRCOX_SOUND_FILE_EXT) \
.replace('.', r'\.') + ')$',
recursive = True,
blank = True, null = True,
)
embed = models.TextField(
_('embed HTML code'),
blank = True, null = True,
help_text = _('HTML code used to embed a sound from external plateform'),
)
duration = models.TimeField(
_('duration'),
blank = True, null = True,
help_text = _('duration of the sound'),
)
mtime = models.DateTimeField(
_('modification time'),
blank = True, null = True,
help_text = _('last modification date and time'),
)
removed = models.BooleanField(
_('removed'),
default = False,
help_text = _('this sound has been removed from filesystem'),
)
good_quality = models.BooleanField(
_('good quality'),
default = False,
help_text = _('sound\'s quality is okay')
)
public = models.BooleanField(
_('public'),
default = False,
help_text = _('sound\'s is accessible through the website')
)
def get_mtime (self):
"""
Get the last modification date from file
"""
mtime = os.stat(self.path).st_mtime
mtime = tz.datetime.fromtimestamp(mtime)
# db does not store microseconds
mtime = mtime.replace(microsecond = 0)
return tz.make_aware(mtime, tz.get_current_timezone())
def file_exists (self):
"""
Return true if the file still exists
"""
return os.path.exists(self.path)
def check_on_file (self):
"""
Check sound file info again'st self, and update informations if
needed (do not save). Return True if there was changes.
"""
if not self.file_exists():
if self.removed:
return
self.removed = True
return True
old_removed = self.removed
self.removed = False
mtime = self.get_mtime()
if self.mtime != mtime:
self.mtime = mtime
self.good_quality = False
return True
return old_removed != self.removed
def save (self, check = True, *args, **kwargs):
if check:
self.check_on_file()
if not self.name and self.path:
self.name = os.path.basename(self.path) \
.splitext() \
.replace('_', ' ')
super().save(*args, **kwargs)
def __str__ (self):
return '/'.join(self.path.split('/')[-3:])
class Meta:
verbose_name = _('Sound')
verbose_name_plural = _('Sounds')
class Stream (models.Model):
"""
When there are no program scheduled, it is possible to play sounds
in order to avoid blanks. A Stream is a Program that plays this role,
and whose linked to a Stream.
All sounds that are marked as good and that are under the related
program's archive dir are elligible for the sound's selection.
"""
program = models.ForeignKey(
'Program',
verbose_name = _('related program'),
)
delay = models.TimeField(
_('delay'),
blank = True, null = True,
help_text = _('plays this playlist at least every delay')
)
begin = models.TimeField(
_('begin'),
blank = True, null = True,
help_text = _('used to define a time range this stream is'
'played')
)
end = models.TimeField(
_('end'),
blank = True, null = True,
help_text = _('used to define a time range this stream is'
'played')
)
class Schedule (models.Model):
"""
A Schedule defines time slots of programs' diffusions. It can be an initial
run or a rerun (in such case it is linked to the related schedule).
"""
# Frequency for schedules. Basically, it is a mask of bits where each bit is
# a week. Bits > rank 5 are used for special schedules.
# Important: the first week is always the first week where the weekday of
# the schedule is present.
# For ponctual programs, there is no need for a schedule, only a diffusion
Frequency = {
'first': (0b000001, _('first week of the month')),
'second': (0b000010, _('second week of the month')),
'third': (0b000100, _('third week of the month')),
'fourth': (0b001000, _('fourth week of the month')),
'last': (0b010000, _('last week of the month')),
'first and third': (0b000101, _('first and third weeks of the month')),
'second and fourth': (0b001010, _('second and fourth weeks of the month')),
'every': (0b011111, _('once a week')),
'one on two': (0b100000, _('one week on two')),
}
VerboseFrequency = { value[0]: value[1] for key, value in Frequency.items() }
Frequency = { key: value[0] for key, value in Frequency.items() }
program = models.ForeignKey(
'Program',
verbose_name = _('related program'),
)
date = models.DateTimeField(_('date'))
duration = models.TimeField(
_('duration'),
help_text = _('regular duration'),
)
frequency = models.SmallIntegerField(
_('frequency'),
choices = VerboseFrequency.items(),
)
initial = models.ForeignKey(
'self',
verbose_name = _('initial'),
blank = True, null = True,
help_text = 'this schedule is a rerun of this one',
)
def match (self, date = None, check_time = True):
"""
Return True if the given datetime matches the schedule
"""
date = date_or_default(date)
if self.date.weekday() == date.weekday() and self.match_week(date):
return self.date.time() == date.time() if check_time else True
return False
def match_week (self, date = None):
"""
Return True if the given week number matches the schedule, False
otherwise.
If the schedule is ponctual, return None.
"""
# FIXME: does not work if first_day > date_day
date = date_or_default(date)
if self.frequency == Schedule.Frequency['one on two']:
week = date.isocalendar()[1]
return (week % 2) == (self.date.isocalendar()[1] % 2)
first_of_month = date.replace(day = 1)
week = date.isocalendar()[1] - first_of_month.isocalendar()[1]
# weeks of month
if week == 4:
# fifth week: return if for every week
return self.frequency == 0b1111
return (self.frequency & (0b0001 << week) > 0)
def normalize (self, date):
"""
Set the time of a datetime to the schedule's one
"""
return date.replace(hour = self.date.hour, minute = self.date.minute)
def dates_of_month (self, date = None):
"""
Return a list with all matching dates of date.month (=today)
"""
date = date_or_default(date, True).replace(day=1)
fwday = date.weekday()
wday = self.date.weekday()
# move date to the date weekday of the schedule
# check on SO#3284452 for the formula
date += tz.timedelta(days = (7 if fwday > wday else 0) - fwday + wday)
fwday = date.weekday()
# special frequency case
weeks = self.frequency
if self.frequency == Schedule.Frequency['last']:
date += tz.timedelta(month = 1, days = -7)
return self.normalize([date])
if weeks == Schedule.Frequency['one on two']:
# if both week are the same, then the date week of the month
# matches. Note: wday % 2 + fwday % 2 => (wday + fwday) % 2
fweek = date.isocalendar()[1]
if date.month == 1 and fweek >= 50:
# isocalendar can think we are on the last week of the
# previous year
fweek = 0
week = self.date.isocalendar()[1]
weeks = 0b010101 if not (fweek + week) % 2 else 0b001010
dates = []
for week in range(0,5):
# there can be five weeks in a month
if not weeks & (0b1 << week):
continue
wdate = date + tz.timedelta(days = week * 7)
if wdate.month == date.month:
dates.append(self.normalize(wdate))
return dates
def diffusions_of_month (self, date, exclude_saved = False):
"""
Return a list of Diffusion instances, from month of the given date, that
can be not in the database.
If exclude_saved, exclude all diffusions that are yet in the database.
"""
dates = self.dates_of_month(date)
saved = Diffusion.objects.filter(date__in = dates,
program = self.program)
diffusions = []
# existing diffusions
for item in saved:
if item.date in dates:
dates.remove(item.date)
if not exclude_saved:
diffusions.append(item)
# others
for date in dates:
first_date = date
if self.initial:
first_date -= self.date - self.initial.date
first_diffusion = Diffusion.objects.filter(date = first_date,
program = self.program)
first_diffusion = first_diffusion[0] if first_diffusion.count() \
else None
diffusions.append(Diffusion(
program = self.program,
type = Diffusion.Type['unconfirmed'],
initial = first_diffusion if self.initial else None,
date = date,
duration = self.duration,
))
return diffusions
def __str__ (self):
frequency = [ x for x,y in Schedule.Frequency.items()
if y == self.frequency ]
return self.program.name + ': ' + frequency[0] + ' (' + str(self.date) + ')'
class Meta:
verbose_name = _('Schedule')
verbose_name_plural = _('Schedules')
class Station (Nameable):
"""
A Station regroup one or more programs (stream and normal), and is the top
element used to generate streams outputs and configuration.
"""
active = models.BooleanField(
_('active'),
default = True,
help_text = _('this station is active')
)
public = models.BooleanField(
_('public'),
default = True,
help_text = _('information are available to the public'),
)
fallback = models.FilePathField(
_('fallback song'),
match = r'(' + '|'.join(settings.AIRCOX_SOUND_FILE_EXT) \
.replace('.', r'\.') + ')$',
recursive = True,
blank = True, null = True,
help_text = _('use this song file if there is a problem and nothing is '
'played')
)
class Program (Nameable):
"""
A Program can either be a Streamed or a Scheduled program.
A Streamed program is used to generate non-stop random playlists when there
is not scheduled diffusion. In such a case, a Stream is used to describe
diffusion informations.
A Scheduled program has a schedule and is the one with a normal use case.
"""
station = models.ForeignKey(
Station,
verbose_name = _('station')
)
active = models.BooleanField(
_('active'),
default = True,
help_text = _('if not set this program is no longer active')
)
public = models.BooleanField(
_('public'),
default = True,
help_text = _('information are available to the public')
)
@property
def path (self):
"""
Return the path to the programs directory
"""
return os.path.join(settings.AIRCOX_PROGRAMS_DIR,
self.slug + '_' + str(self.id) )
def ensure_dir (self, subdir = None):
"""
Make sur the program's dir exists (and optionally subdir). Return True
if the dir (or subdir) exists.
"""
path = self.path
if not os.path.exists(path):
os.mkdir(path)
if subdir:
path = os.path.join(path, subdir)
if not os.path.exists(path):
os.mkdir(path)
return os.path.exists(path)
def find_schedule (self, date):
"""
Return the first schedule that matches a given date.
"""
schedules = Schedule.objects.filter(program = self)
for schedule in schedules:
if schedule.match(date, check_time = False):
return schedule
class Diffusion (models.Model):
"""
A Diffusion is an occurrence of a Program that is scheduled on the
station's timetable. It can be a rerun of a previous diffusion. In such
a case, use rerun's info instead of its own.
A Diffusion without any rerun is named Episode (previously, a
Diffusion was different from an Episode, but in the end, an
episode only has a name, a linked program, and a list of sounds, so we
finally merge theme).
A Diffusion can have different types:
- default: simple diffusion that is planified / did occurred
- unconfirmed: a generated diffusion that has not been confirmed and thus
is not yet planified
- cancel: the diffusion has been canceled
- stop: the diffusion has been manually stopped
"""
Type = {
'normal': 0x00, # diffusion is planified
'unconfirmed': 0x01, # scheduled by the generator but not confirmed for diffusion
'cancel': 0x02, # diffusion canceled
}
for key, value in Type.items():
ugettext_lazy(key)
# common
program = models.ForeignKey (
'Program',
verbose_name = _('program'),
)
sounds = models.ManyToManyField(
Sound,
blank = True,
verbose_name = _('sounds'),
)
# specific
type = models.SmallIntegerField(
verbose_name = _('type'),
choices = [ (y, x) for x,y in Type.items() ],
)
initial = models.ForeignKey (
'self',
verbose_name = _('initial'),
blank = True, null = True,
help_text = _('the diffusion is a rerun of this one')
)
date = models.DateTimeField( _('start of the diffusion') )
duration = models.TimeField(
_('duration'),
help_text = _('regular duration'),
)
def archives_duration (self):
"""
Get total duration of the archives. May differ from the schedule
duration.
"""
sounds = self.initial.sounds if self.initial else self.sounds
r = [ sound.duration
for sound in sounds.filter(type = Sound.Type['archive'])
if sound.duration ]
return utils.time_sum(r) if r else self.duration
def get_archives (self):
"""
Return an ordered list of archives sounds for the given episode.
"""
sounds = self.initial.sounds if self.initial else self.sounds
r = [ sound for sound in sounds.all().order_by('path')
if sound.type == Sound.Type['archive'] ]
return r
@classmethod
def get_next (cl, station = None, date = None, **filter_args):
"""
Return a queryset with the upcoming diffusions, ordered by
+date
"""
filter_args['date__gte'] = date_or_default(date)
if station:
filter_args['program__station'] = station
return cl.objects.filter(**filter_args).order_by('date')
@classmethod
def get_prev (cl, station = None, date = None, **filter_args):
"""
Return a queryset with the previous diffusion, ordered by
-date
"""
filter_args['date__lte'] = date_or_default(date)
if station:
filter_args['program__station'] = station
return cl.objects.filter(**filter_args).order_by('-date')
def get_conflicts (self):
"""
Return a list of conflictual diffusions, based on the scheduled duration.
Note: for performance reason, check next and prev are limited to a
certain amount of diffusions.
"""
r = []
# prev
qs = self.get_prev(self.program.station, self.date)
count = 0
for diff in qs:
if diff.pk == self.pk:
continue
end = diff.date + utils.to_timedelta(diff.duration)
if end > self.date:
r.append(diff)
continue
count+=1
if count > 5: break
# next
end = self.date + utils.to_timedelta(self.duration)
qs = self.get_next(self.program.station, self.date)
count = 0
for diff in qs:
if diff.pk == self.pk:
continue
if diff.date < end:
r.append(diff)
continue
count+=1
if count > 5: break
return r
def save (self, *args, **kwargs):
if self.initial:
if self.initial.initial:
self.initial = self.initial.initial
self.program = self.initial.program
super(Diffusion, self).save(*args, **kwargs)
def __str__ (self):
return self.program.name + ', ' + \
self.date.strftime('%Y-%m-%d %H:%M') +\
'' # FIXME str(self.type_display)
class Meta:
verbose_name = _('Diffusion')
verbose_name_plural = _('Diffusions')
permissions = (
('programming', _('edit the diffusion\'s planification')),
)
class Log (models.Model):
"""
Log a played sound start and stop, or a single message
"""
source = models.CharField(
_('source'),
max_length = 64,
help_text = 'source information',
blank = True, null = True,
)
sound = models.ForeignKey(
'Sound',
help_text = _('played sound'),
blank = True, null = True,
)
date = models.DateTimeField(
'date',
)
comment = models.CharField(
max_length = 512,
blank = True, null = True,
)
related_type = models.ForeignKey(
ContentType,
blank = True, null = True,
)
related_id = models.PositiveIntegerField(
blank = True, null = True,
)
related_object = GenericForeignKey(
'related_type', 'related_id',
)
def print (self):
print(str(self), ':', self.comment or '')
if self.diffusion:
print(' - diffusion #' + str(self.diffusion.id))
if self.sound:
print(' - sound #' + str(self.sound.id), self.sound.path)
def __str__ (self):
return self.date.strftime('%Y-%m-%d %H:%M') + ', ' + self.source

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aircox/programs/settings.py Executable file
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import os
from django.conf import settings
def ensure (key, default):
globals()[key] = getattr(settings, key, default)
# Directory for the programs data
ensure('AIRCOX_PROGRAMS_DIR',
os.path.join(settings.MEDIA_ROOT, 'programs'))
# Default directory for the sounds that not linked to a program
ensure('AIRCOX_SOUND_DEFAULT_DIR',
os.path.join(AIRCOX_PROGRAMS_DIR, 'defaults'))
# Sub directory used for the complete episode sounds
ensure('AIRCOX_SOUND_ARCHIVES_SUBDIR', 'archives')
# Sub directory used for the excerpts of the episode
ensure('AIRCOX_SOUND_EXCERPTS_SUBDIR', 'excerpts')
# Quality attributes passed to sound_quality_check from sounds_monitor
ensure('AIRCOX_SOUND_QUALITY', {
'attribute': 'RMS lev dB',
'range': (-18.0, -8.0),
'sample_length': 120,
}
)
# Extension of sound files
ensure('AIRCOX_SOUND_FILE_EXT',
('.ogg','.flac','.wav','.mp3','.opus'))
# Stream for the scheduled diffusions
ensure('AIRCOX_SCHEDULED_STREAM', 0)

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aircox/programs/tests.py Executable file
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import datetime
from django.test import TestCase
from django.utils import timezone as tz
from aircox.programs.models import *
class Programs (TestCase):
def setUp (self):
stream = Stream.objects.get_or_create(
name = 'diffusions',
defaults = { 'type': Stream.Type['schedule'] }
)[0]
Program.objects.create(name = 'source', stream = stream)
Program.objects.create(name = 'microouvert', stream = stream)
self.schedules = {}
self.programs = {}
def test_create_programs_schedules (self):
program = Program.objects.get(name = 'source')
sched_0 = self.create_schedule(program, 'one on two', [
tz.datetime(2015, 10, 2, 18),
tz.datetime(2015, 10, 16, 18),
tz.datetime(2015, 10, 30, 18),
]
)
sched_1 = self.create_schedule(program, 'one on two', [
tz.datetime(2015, 10, 5, 18),
tz.datetime(2015, 10, 19, 18),
],
rerun = sched_0
)
self.programs[program.pk] = program
program = Program.objects.get(name = 'microouvert')
# special case with november first week starting on sunday
sched_2 = self.create_schedule(program, 'first and third', [
tz.datetime(2015, 11, 6, 18),
tz.datetime(2015, 11, 20, 18),
],
date = tz.datetime(2015, 10, 23, 18),
)
def create_schedule (self, program, frequency, dates, date = None, rerun = None):
frequency = Schedule.Frequency[frequency]
schedule = Schedule(
program = program,
frequency = frequency,
date = date or dates[0],
rerun = rerun,
duration = datetime.time(1, 30)
)
print(schedule.__dict__)
schedule.save()
self.schedules[schedule.pk] = (schedule, dates)
return schedule
def test_check_schedule (self):
for schedule, dates in self.schedules:
dates = [ tz.make_aware(date) for date in dates ]
dates.sort()
# dates
dates_ = schedule.dates_of_month(dates[0])
dates_.sort()
self.assertEqual(dates_, dates)
# diffusions
dates_ = schedule.diffusions_of_month(dates[0])
dates_ = [date_.date for date_ in dates_]
dates_.sort()
self.assertEqual(dates_, dates)

30
aircox/programs/utils.py Normal file
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import datetime
def to_timedelta (time):
"""
Transform a datetime or a time instance to a timedelta,
only using time info
"""
return datetime.timedelta(
hours = time.hour,
minutes = time.minute,
seconds = time.second
)
def seconds_to_time (seconds):
"""
Seconds to datetime.time
"""
minutes, seconds = divmod(seconds, 60)
hours, minutes = divmod(minutes, 60)
return datetime.time(hour = hours, minute = minutes, second = seconds)
def time_sum (times):
"""
Sum up a list of time elements
"""
seconds = sum([ time.hour * 3600 + time.minute * 60 + time.second
for time in times ])
return seconds_to_time(seconds)

16
aircox/programs/views.py Executable file
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from django.db import models
from django.shortcuts import render
from django.core.serializers.json import DjangoJSONEncoder
from django.utils import timezone, dateformat
from django.views.generic import ListView
from django.views.generic import DetailView
from django.utils.translation import ugettext as _, ugettext_lazy
from aircox.programs.models import *
import aircox.programs.settings
import aircox.programs.utils