Implement support for the headless PlexAmp client

docker-compose.yml

@@ -2,6 +2,7 @@ version: "2"
 
 volumes:
   spotifycache:
+  plex_settings:
 
 services:
   # Core services
@@ -72,3 +73,13 @@ services:
       io.balena.features.supervisor-api: 1
     environment:
       SET_HOSTNAME: balena
+
+  plex: 
+    build: ./plugins/plex
+    restart: on-failure
+    privileged: true
+    network_mode: host
+    ports:
+      - 32500:32500
+    volumes:
+      - plex_settings:/root/.local/share/Plexamp

docs/04-plugins.md

@@ -25,6 +25,18 @@ Spotify Connect requires a premium account. There is two methods of authenticati
 
 Manual authentication will let you stream audio over the internet from a client that is on a different network than the balenaSound device. This is useful if your balenaSound device is on a separate WiFi network that's harder to reach (e.g. a backyard network).
 
+### Plexamp
+
+The headless Plexamp plugin allows for casting to the fleet from the Plex(amp) mobile/desktop/web apps. A Plex Pass is required to use this plugin.
+
+You need to log in before using this plugin, to do that, make sure the plugin has started and spawn a terminal into the container.
+Once you have a terminal, run the following command:
+```bash
+bash login.sh
+```
+Plexamp will prompt you for a claim token from [plex.tv/claim](https://www.plex.tv/claim/) and a player name, this name is the name that will show in the Plex(amp) app.
+Once you have logged in and set a player name, you can exit out of the terminal (you may need to press control+c if plex starts) and restart the Plexamp plugin.
+
 ## Installable
 
 The following plugins are available to be added to your balenaSound installation:

plugins/plex/Dockerfile.template

@@ -0,0 +1,16 @@
+FROM balenalib/%%BALENA_MACHINE_NAME%%-node:16.18.1
+
+
+RUN install_packages wget bzip2 jq
+
+# Audio block setup
+ENV PULSE_SERVER=tcp:localhost:4317
+RUN curl -sL https://raw.githubusercontent.com/balenablocks/audio/master/scripts/alsa-bridge/debian-setup.sh | bash -s y
+
+WORKDIR /opt/plexamp
+ADD *.sh /opt/plexamp/
+
+RUN chmod +x start.sh
+RUN chmod +x plexamp-setup.sh && ./plexamp-setup.sh
+
+ENTRYPOINT /opt/plexamp/start.sh

plugins/plex/login.sh

@@ -0,0 +1,11 @@
+if [[ -f "/root/.local/share/Plexamp/Settings/%40Plexamp%3Auser%3Atoken" ]]; then
+    echo "Plexamp appears to be already configured, skipping..."
+    exit 1
+fi
+
+echo "When prompted, enter your claim token from https://plex.tv/claim"
+echo "Plexamp should exit after entering your claim token and player name, if it doesnt press control+c. After exiting, you can restart this container and exit the terminal."
+
+cd /opt/plexamp/plexamp/
+
+node js/index.js

plugins/plex/plexamp-setup.sh

@@ -0,0 +1,12 @@
+version_info=$(curl https://plexamp.plex.tv/headless/version.json)
+
+latest_version_number=$(echo $version_info | jq --raw-output '.latestVersion')
+latest_version_url=$(echo $version_info | jq --raw-output '.updateUrl')
+
+echo "Downloading PlexAmp version '$latest_version_number' from '$latest_version_url'"
+
+wget "$latest_version_url" -O "plexamp.tar.bz2"
+
+tar -xf plexamp.tar.bz2 
+
+

plugins/plex/start.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+if [[ -n "$SOUND_DISABLE_PLEX" ]]; then
+  echo "Plex is disabled, exiting..."
+  exit 0
+fi
+
+if [[ ! -f "/root/.local/share/Plexamp/Settings/%40Plexamp%3Auser%3Atoken" ]]; then
+    echo "__________________________________________WARNING__________________________________________________"
+    echo "|                                  Plex is not configured!                                        |"
+    echo "| Please enter a shell into the Plex container and run `bash login.sh` to setup your credentials! |"
+    echo "|_________________________________________________________________________________________________|"
+    echo ""
+    echo "Note: This is likely to change as headless Plexamp versions are released with new features."
+    echo "  Passing a claim token via a command line argument has been suggested, we will have to see."
+    sleep 120
+    exit 1
+fi
+
+echo "Starting Plex plugin..."
+
+cd /opt/plexamp/plexamp/
+
+node js/index.js