From f8c49e18e57954f3a642283dda165b34a526ff94 Mon Sep 17 00:00:00 2001
From: Josh Washburne <recursive.green@gmail.com>
Date: Tue, 27 Mar 2018 15:59:53 -0400
Subject: [PATCH] When a song request is fulfilled, update song data.

---
 savepointradio/profiles/apps.py    |  2 +-
 savepointradio/profiles/signals.py | 17 ++++++++++++++++-
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/savepointradio/profiles/apps.py b/savepointradio/profiles/apps.py
index 420c741..79f55bc 100644
--- a/savepointradio/profiles/apps.py
+++ b/savepointradio/profiles/apps.py
@@ -5,4 +5,4 @@ class ProfilesConfig(AppConfig):
     name = 'profiles'
 
     def ready(self):
-        from .signals import create_profile
+        from .signals import create_profile, update_song_plays
diff --git a/savepointradio/profiles/signals.py b/savepointradio/profiles/signals.py
index f1a6506..55965fa 100644
--- a/savepointradio/profiles/signals.py
+++ b/savepointradio/profiles/signals.py
@@ -1,8 +1,9 @@
 from django.conf import settings
+from django.db.models import F
 from django.db.models.signals import post_save
 from django.dispatch import receiver
 
-from .models import RadioProfile
+from .models import RadioProfile, SongRequest
 
 
 @receiver(post_save, sender=settings.AUTH_USER_MODEL)
@@ -12,3 +13,17 @@ def create_profile(sender, instance, created, **kwargs):
     """
     if created:
         profile, new = RadioProfile.objects.get_or_create(user=instance)
+
+
+@receiver(post_save, sender=SongRequest)
+def update_song_plays(sender, instance, created, update_fields, **kwargs):
+    """
+    Update the song data with the latest play time and the number of times
+    played.
+    """
+    if not created and update_fields:
+        if 'played_at' in update_fields:
+            song = instance.song
+            song.last_played = instance.played_at
+            song.num_played = F('num_played') + 1
+            song.save()