From 110debe26d50c64b5dbd6198c332c93a87650882 Mon Sep 17 00:00:00 2001
From: j <0x006A@0x2620.org>
Date: Tue, 20 Dec 2011 01:11:37 +0530
Subject: [PATCH] tv

---
 pandora/settings.py    |  1 +
 pandora/tv/__init__.py |  0
 pandora/tv/models.py   | 76 ++++++++++++++++++++++++++++++++++++++++++
 pandora/tv/views.py    | 21 ++++++++++++
 4 files changed, 98 insertions(+)
 create mode 100644 pandora/tv/__init__.py
 create mode 100644 pandora/tv/models.py
 create mode 100644 pandora/tv/views.py

diff --git a/pandora/settings.py b/pandora/settings.py
index b1108d6b..3554312f 100644
--- a/pandora/settings.py
+++ b/pandora/settings.py
@@ -110,6 +110,7 @@ INSTALLED_APPS = (
     'user',
     'api',
     'urlalias',
+    'tv',
 )
 
 # Log errors into db
diff --git a/pandora/tv/__init__.py b/pandora/tv/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/pandora/tv/models.py b/pandora/tv/models.py
new file mode 100644
index 00000000..b2ba0d89
--- /dev/null
+++ b/pandora/tv/models.py
@@ -0,0 +1,76 @@
+# -*- coding: utf-8 -*-
+# vi:si:et:sw=4:sts=4:ts=4
+from __future__ import division, with_statement
+from datetime import datetime, timedelta
+from random import randint
+
+from django.db import models
+
+
+class Channel(models.Model):
+    created = models.DateTimeField(auto_now_add=True)
+    modified = models.DateTimeField(auto_now=True)
+    run = models.IntegerField(default=0)
+
+    list = models.ForeignKey('itemlist.List', related_name='channel')
+
+    def json(self, user):
+        now = datetime.now()
+        items = self.list.get_items().filter(rendered=True)
+        if items.count() == 0:
+            return
+
+        program = self.program.order_by('-start')
+        while program.count() < 2 or program[0].end < now:
+            not_played = items.exclude(program__in=self.program.filter(run=self.run))
+            not_played_count = not_played.count()
+            if not_played_count == 0:
+                self.run += 1
+                self.save()
+                not_played = items
+                not_played_count = not_played.count()
+            item = not_played[randint(0, not_played_count-1)]
+            if program.count() > 0:
+                start = program[0].end
+            else:
+                start = now
+            end = start + timedelta(seconds=item.get_json()['duration'])
+            p = Program()
+            p.item=item
+            p.run=self.run
+            p.start=start
+            p.end=end
+            p.channel = self
+            p.save()
+            program = self.program.order_by('-start')
+            print program.count(), now, p.start, p.end
+        current = program[1]
+        return {
+            'current': current.json(user, now),
+            'next': program[0].json(user)
+        }
+
+class Program(models.Model):
+    created = models.DateTimeField(auto_now_add=True)
+    modified = models.DateTimeField(auto_now=True)
+    run = models.IntegerField(default=0)
+    start = models.DateTimeField()
+    end = models.DateTimeField()
+    item = models.ForeignKey('item.Item', related_name='program')
+    channel = models.ForeignKey(Channel, related_name='program')
+
+    def __unicode__(self):
+        return u"%s %s" % (self.item, self.start)
+
+    def json(self, user, current=False):
+        item_json = self.item.get_json()
+        r = {
+            'item': self.item.itemId,
+            'durations': item_json['durations'],
+            'parts': item_json['parts'],
+        }
+        r['layers'] = self.item.get_layers(user)
+        if current:
+            r['currentTime'] = (current - self.start).total_seconds()
+
+        return r
diff --git a/pandora/tv/views.py b/pandora/tv/views.py
new file mode 100644
index 00000000..055de83f
--- /dev/null
+++ b/pandora/tv/views.py
@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# vi:si:et:sw=4:sts=4:ts=4
+from __future__ import division
+
+import models
+from ox.utils import json
+from ox.django.decorators import login_required_json
+from ox.django.shortcuts import render_to_json_response, get_object_or_404_json, json_response
+
+from itemlist.views import get_list_or_404_json
+from api.actions import actions
+
+@login_required_json
+def tv(request):
+    data = json.loads(request.POST['data'])
+    list = get_list_or_404_json(data['list'])
+    channel, created = models.Channel.objects.get_or_create(list=list)
+    response = json_response(status=200, text='created')
+    response['data'] = channel.json(request.user)
+    return render_to_json_response(response)
+actions.register(tv, cache=False)