From 8a4e7f4f37246bb8af534637a48b852208b916cd Mon Sep 17 00:00:00 2001
From: Dirk Alders <dirk@mount-mockery.de>
Date: Sat, 23 Jul 2022 21:51:13 +0200
Subject: [PATCH] MQTT auth and improvements implemented

---
 .gitignore               |  5 +++
 .gitmodules              |  3 ++
 config_example/config.py | 24 +++++++++++++
 report                   |  1 +
 requirements.txt         |  1 +
 spotify.py               | 76 ++++++++++++++++++++++++++++++++++++++++
 6 files changed, 110 insertions(+)
 create mode 100644 .gitmodules
 create mode 100644 config_example/config.py
 create mode 160000 report
 create mode 100644 requirements.txt
 create mode 100644 spotify.py

diff --git a/.gitignore b/.gitignore
index 203ae41..a617829 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,8 @@
+# ---> spotify
+#
+config.py
+*.err
+
 # ---> Python
 # Byte-compiled / optimized / DLL files
 __pycache__/
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..98f8bb5
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "report"]
+	path = report
+	url = https://git.mount-mockery.de/pylib/report.git
diff --git a/config_example/config.py b/config_example/config.py
new file mode 100644
index 0000000..8b99a72
--- /dev/null
+++ b/config_example/config.py
@@ -0,0 +1,24 @@
+#!/usr/bin/env python
+# -*- coding: UTF-8 -*-
+import os
+import report
+
+MQTT_USER = "user"
+MQTT_PASS = "pass"
+MQTT_SERVER = "localhost"
+MQTT_TOPIC = "hifi/spotify"
+
+DEVICE_NAME = "Multimedia"
+
+#
+# Logging
+#
+__BASEPATH__ = os.path.abspath(os.path.dirname(__file__))
+APP_NAME = "spotify"
+LOGTARGET = 'logfile'   # possible choices are: 'logfile' or 'stdout'
+LOGLVL = 'DEBUG'
+
+LOGHOST = 'cutelog'
+LOGPORT = 19996
+
+formatter = report.LONG_FMT
diff --git a/report b/report
new file mode 160000
index 0000000..21bac82
--- /dev/null
+++ b/report
@@ -0,0 +1 @@
+Subproject commit 21bac82e0c459ebf6d34783c9249526a657a6bbd
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..8579e8b
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+paho-mqtt
diff --git a/spotify.py b/spotify.py
new file mode 100644
index 0000000..4feca3b
--- /dev/null
+++ b/spotify.py
@@ -0,0 +1,76 @@
+import config
+import logging
+import paho.mqtt.client as paho
+import report
+import subprocess
+import time
+
+
+try:
+    from config import APP_NAME as ROOT_LOGGER_NAME
+except ImportError:
+    ROOT_LOGGER_NAME = 'root'
+logger = logging.getLogger(ROOT_LOGGER_NAME).getChild('main')
+
+
+class librespot(object):
+    ON_CMD = ['play', ]
+    OFF_CMD = ['pause', 'stop', ]
+
+    def __init__(self, state_callback):
+        logger.info("Starting Librespot...")
+        self.__state_callback__ = state_callback
+        self.__process__ = subprocess.Popen(["librespot", "-v", "--name", config.DEVICE_NAME],
+                               shell=False,
+                               # We pipe the output to an internal pipe
+                               stderr=subprocess.PIPE)
+        self.__state__ = None
+        self.set_state(False)
+
+    def run(self):
+        while True:
+            output = self.__process__.stderr.readline()
+            # Polling returns None when the program is still running, return_code otherwise
+            return_code = self.__process__.poll()
+            if return_code is not None:
+                self.__process__.close()
+                # Program ended, get exit/return code
+                raise RuntimeError("Command '{}' finished with exit code {}".format(command, return_code))
+        
+                # If the output is not empty, feed it to the function, strip the newline first
+            if output:
+                out_txt = output.decode('utf-8').strip('\n').strip()
+                out_txt = out_txt[out_txt.find(']') + 2:]
+                logger.debug("librespot output: %s", out_txt)
+                if "command=" in out_txt:
+                    command = out_txt[out_txt.find('command=') + 8:].strip().lower()
+                    logger.debug("librespot command: %s", command)
+                    if command.startswith("load"):
+                        self.set_state(command.split(',')[2].strip() == 'true')
+                    #
+                    if command in self.ON_CMD:
+                        self.set_state(True)
+                    if command in self.OFF_CMD:
+                        self.set_state(False)
+
+    def set_state(self, target_state):
+        if target_state != self.__state__:
+            self.__state__ = target_state
+            logger.info("spotify state changed to %s", self.__state__)
+            self.__state_callback__(self.__state__)
+
+
+def send_msg_mqtt(state):
+    client= paho.Client("spotify")
+    client.username_pw_set(config.MQTT_USER, config.MQTT_PASS)
+    client.connect(config.MQTT_SERVER, 1883)
+    logger.info("Sending Spotify status information to mqtt %s = %s", config.MQTT_TOPIC, str(state))
+    client.publish(config.MQTT_TOPIC, "true" if state else "false")
+
+
+
+if __name__ == '__main__': 
+    report.appLoggingConfigure(config.__BASEPATH__, config.LOGTARGET, ((config.APP_NAME, config.LOGLVL), ), fmt=config.formatter, host=config.LOGHOST, port=config.LOGPORT)
+    
+    ls = librespot(send_msg_mqtt)
+    ls.run()