From b97bf3271d7967cfd901a9de7140d1aa7d2e71b6 Mon Sep 17 00:00:00 2001
From: boyska <piuttosto@logorroici.org>
Date: Sat, 27 Mar 2021 13:20:02 +0100
Subject: [PATCH] MPD_ENFORCE_ALWAYS_PLAYING option

refs #16
---
 larigira/config.py |  1 +
 larigira/mpc.py    | 41 ++++++++++++++++++++++++++++++++---------
 2 files changed, 33 insertions(+), 9 deletions(-)

diff --git a/larigira/config.py b/larigira/config.py
index e9f9de5..18fcde9 100644
--- a/larigira/config.py
+++ b/larigira/config.py
@@ -27,6 +27,7 @@ def get_conf(prefix="LARIGIRA_"):
     conf["SECRET_KEY"] = "Please replace me!"
     conf["MPD_WAIT_START"] = True
     conf["MPD_WAIT_START_RETRYSECS"] = 5
+    conf["MPD_ENFORCE_ALWAYS_PLAYING"] = False
     conf["CHECK_SECS"] = 20  # period for checking playlist length
     conf["EVENT_TICK_SECS"] = 30  # period for scheduling events
     conf["DEBUG"] = False
diff --git a/larigira/mpc.py b/larigira/mpc.py
index 1fb79bb..5ab5038 100644
--- a/larigira/mpc.py
+++ b/larigira/mpc.py
@@ -1,17 +1,19 @@
 from __future__ import print_function
+
 import logging
 import signal
+
+import mpd
 from pkg_resources import iter_entry_points
 
 import gevent
 from gevent.queue import Queue
-import mpd
 
+from .audiogen import audiogenerate
+from .entrypoints_utils import get_avail_entrypoints
 from .event import Monitor
 from .eventutils import ParentedLet, Timer
-from .audiogen import audiogenerate
 from .unused import UnusedCleaner
-from .entrypoints_utils import get_avail_entrypoints
 
 
 def get_mpd_client(conf):
@@ -51,7 +53,9 @@ class MPDWatcher(ParentedLet):
                 FileNotFoundError,
             ) as exc:
                 self.log.warning(
-                    "Connection to MPD failed (%s: %s)", exc.__class__.__name__, exc
+                    "Connection to MPD failed (%s: %s)",
+                    exc.__class__.__name__,
+                    exc,
                 )
                 self.client = None
                 first_after_connection = True
@@ -83,9 +87,15 @@ class Player:
         mpd_client = mpd.MPDClient(use_unicode=True)
         try:
             mpd_client.connect(self.conf["MPD_HOST"], self.conf["MPD_PORT"])
-        except (mpd.ConnectionError, ConnectionRefusedError, FileNotFoundError) as exc:
+        except (
+            mpd.ConnectionError,
+            ConnectionRefusedError,
+            FileNotFoundError,
+        ) as exc:
             self.log.warning(
-                "Connection to MPD failed (%s: %s)", exc.__class__.__name__, exc
+                "Connection to MPD failed (%s: %s)",
+                exc.__class__.__name__,
+                exc,
             )
             raise gevent.GreenletExit()
         return mpd_client
@@ -146,7 +156,9 @@ class Player:
                 try:
                     ret = ef(songs=songs, context=ctx, conf=self.conf)
                 except ImportError as exc:
-                    self.log.warn("Filter %s skipped: %s" % (entrypoint.name, exc))
+                    self.log.warn(
+                        "Filter %s skipped: %s" % (entrypoint.name, exc)
+                    )
                     continue
                 if ret is None:  # bad behavior!
                     continue
@@ -159,7 +171,9 @@ class Player:
                     return ret, reason
                 else:
                     if reason:
-                        self.log.debug('filter %s says ok: %s', entrypoint.name, reason)
+                        self.log.debug(
+                            "filter %s says ok: %s", entrypoint.name, reason
+                        )
         return True, "Passed through %s" % ",".join(availfilters)
 
     def enqueue(self, songs):
@@ -200,6 +214,11 @@ class Player:
                 self.log.exception("Cannot insert song %s", uri)
             self.tmpcleaner.watch(uri.strip())
 
+    def play(self):
+        """make sure that MPD is playing"""
+        mpd_client = self._get_mpd()
+        mpd_client.play()
+
 
 class Controller(gevent.Greenlet):
     def __init__(self, conf):
@@ -234,6 +253,8 @@ class Controller(gevent.Greenlet):
                 kind == "mpc" and args[0] in ("player", "playlist", "connect")
             ):
                 gevent.Greenlet.spawn(self.player.check_playlist)
+                if self.conf["MPD_ENFORCE_ALWAYS_PLAYING"]:
+                    gevent.Greenlet.spawn(self.player.play)
                 try:
                     self.player.tmpcleaner.check_playlist()
                 except:
@@ -251,7 +272,9 @@ class Controller(gevent.Greenlet):
                     self.log.exception(
                         "Error while adding to queue; " "bad audiogen output?"
                     )
-            elif (kind == "signal" and args[0] == signal.SIGALRM) or kind == "refresh":
+            elif (
+                kind == "signal" and args[0] == signal.SIGALRM
+            ) or kind == "refresh":
                 # it's a tick!
                 self.log.debug("Reload")
                 self.monitor.q.put(dict(kind="forcetick"))