commit 0e23771ab14c91a8642fa97fbcfcdb7978ecfff7
Author: Daniel Weschke <daniel.weschke@directbox.de>
Date:   Sat Apr 3 20:55:22 2021 +0200

    inital commit

diff --git a/controldeck.conf b/controldeck.conf
new file mode 100644
index 0000000..4e35873
--- /dev/null
+++ b/controldeck.conf
@@ -0,0 +1,18 @@
+# Examples:
+#
+# [N.volume.NAME]
+# name = sink_name
+# : N.    optional group/row specification
+# : NAME  name of the button
+# : name  sink name, see name with: pamixer --list-sinks
+#
+# [N.button.NAME]
+# command = shell command
+#   second command
+#   ...
+# : N.       optional group/row specification
+# : NAME     name of the button
+# : command  command(s) to run
+
+[4.button.Test]
+command = notify-send -a foo baz
diff --git a/controldeck.py b/controldeck.py
new file mode 100644
index 0000000..09ef675
--- /dev/null
+++ b/controldeck.py
@@ -0,0 +1,124 @@
+#!/usr/bin/env python
+from subprocess import Popen, PIPE, STDOUT
+from configparser import ConfigParser, DuplicateSectionError
+from re import search, IGNORECASE
+from justpy import Div, WebPage, SetRoute, justpy
+
+def process(args):
+  try:
+    # with shell=True args can be a string
+    # detached process https://stackoverflow.com/a/65900355/992129 start_new_session
+    # https://docs.python.org/3/library/subprocess.html#popen-constructor
+    result = Popen(args, stdout=PIPE, stderr=STDOUT, shell=True, start_new_session=True)
+    return result.stdout.read().decode("utf-8").rstrip()
+  except Exception as e:
+    print(f"{e} failed!")
+
+def volume(name):
+  return process(f'pamixer --get-volume --sink "{name}"')
+
+def volume_decrease(name):
+  return process(f'pamixer --get-volume --sink "{name}" --decrease 5')
+
+def volume_increase(name):
+  return process(f'pamixer --get-volume --sink "{name}" --increase 5')
+
+class Button(Div):
+  command = None
+  def __init__(self, **kwargs):
+    super().__init__(**kwargs)
+    self.classes = "bg-gray-800 hover:bg-gray-700 w-20 h-20 m-2 p-1 rounded-lg font-bold flex items-center text-center justify-center select-none"
+    if self.command is not None:
+      def click(self, msg):
+        print(self.command)
+        # string works only with shell
+        if isinstance(self.command, (list)):
+          # e.g.: [['pkill', 'ArdourGUI'], ['systemctl', '--user', 'restart', 'pipewire', 'pipewire-pulse'], ['ardour6', '-n', 'productive-pipewire']]
+          if isinstance(self.command[0], (list)):
+            [process(i) for i in self.command]
+          else:
+            # e.g.: ['pkill', 'ArdourGUI']
+            process(self.command)
+        else:
+          # e.g.: 'pkill ArdourGUI'
+          process(self.command)
+      self.on('click', click)
+
+class ButtonSound(Div):
+  div = None
+  name = None
+  description = None
+  volume = None
+
+  def __init__(self, **kwargs):
+    super().__init__(**kwargs)
+    self.classes = "grid-rows-2"
+    self.div = Div(classes="flex")
+    Button(inner_html=f'{self.description}<br> - 5%', click=self.decrease, a=self.div)
+    Button(inner_html=f'{self.description}<br> + 5%', click=self.increase, a=self.div)
+    self.add(self.div)
+    self.volume = Div(text=f"Volume: {volume(self.name)}%", classes="text-center -mt-2", a=self)
+
+  async def decrease(self, msg):
+    self.volume.text = f'Volume: {volume_decrease(self.name)}%'
+
+  async def increase(self, msg):
+    self.volume.text = f'Volume: {volume_increase(self.name)}%'
+
+@SetRoute('/')
+def application():
+  wp = WebPage(title="ControlDeck", body_classes="bg-gray-900")
+  wp.head_html = '<meta name="viewport" content="width=device-width, initial-scale=1">'
+
+  # div = Div(classes="flex flex-wrap", a=wp)
+  # ButtonSound(name="Stream_sink", description="Stream sink", a=div)
+  # div2 = Div(classes="flex flex-wrap", a=wp)
+  # Button(text="Sleep", command='systemctl suspend', a=div2)
+
+  config = ConfigParser(strict=False)
+  volume_dict = {}
+  button_dict = {}
+  try:
+    config.read('controldeck.conf')
+  except Exception as e:
+    print(f"{e}")
+  #print(config.sections())
+  for i in config.sections():
+    iname = None
+    iname = search("^([0-9]*.?)volume", i, flags=IGNORECASE)
+    if iname is not None:
+      id = iname.group(1)[:-1]  # remove dot
+      try:
+        volume_dict[id] += [{'description': i[iname.end(0)+1:],
+                             'name': config.get(i, 'name', fallback=None)}]
+      except KeyError:
+        volume_dict[id] = [{'description': i[iname.end(0)+1:],
+                            'name': config.get(i, 'name', fallback=None)}]
+    iname = search("^([0-9]*.?)button", i, flags=IGNORECASE)
+    if iname is not None:
+      id = iname.group(1)[:-1]  # remove dot
+      try:
+        button_dict[id] += [{'text': i[iname.end(0)+1:],
+                             'command': config.get(i, 'command', fallback=None)}]
+      except KeyError:
+        button_dict[id] = [{'text': i[iname.end(0)+1:],
+                            'command': config.get(i, 'command', fallback=None)}]
+  for i in volume_dict:
+    for j in volume_dict[i]:
+      if 'div'+i not in vars():
+        vars()['div'+i] = Div(classes="flex flex-wrap", a=wp)
+      ButtonSound(name=j['name'], description=j['description'], a=eval('div'+i))
+  for i in button_dict:
+    for j in button_dict[i]:
+      if 'div'+i not in vars():
+        vars()['div'+i] = Div(classes="flex flex-wrap", a=wp)
+      Button(text=j['text'], command=j['command'], a=eval('div'+i))
+
+  if not wp.components:
+    # config not found or empty, therefore insert an empty div to not get an error
+    Div(text="add elements in controldeck.conf", classes="flex flex-wrap", a=wp)
+
+  return wp
+
+if __name__ == '__main__':
+  justpy()