[Medium] platypush procedure example

procedure_example_1.yaml

# Note: procedures can be synchronous (`procedure.sync` prefix) or asynchronous
# (`procedure.async` prefix). In a synchronous procedure the logic will wait for
# each action to be completed before proceeding with the next - useful if you
# want to link actions together, letting each action access the response of the
# previous one(s). An asynchronous procedure will execute instead all the actions
# in parallel. Useful if you want to execute a set of actions independent from
# each other, but be careful not to stack too many of them - each action will be
# executed in a new thread.
procedure.sync.at_home:
    - action: serial.get_measurement
      # Your device should return a JSON over the serial interface structured like:
      # {"luminosity":45, "temperature":25}

      # Note that you can either access the full output of the previous command through
      # the `output` context variable, as we saw in the event hook example, or, if the
      # output is a JSON-like object, you can access individual attributes of it
      # directly through the context. It is indeed usually more handy to access individual
      # attributes like this: the `output` context variable will be overwritten by the
      # next response, while the individual attributes of a response will remain until
      # another response overwrites them (they're similar to local variables)
    - if ${luminosity < 30}:
        - action: light.hue.on

    - if ${temperature > 25}:
        -
            action: switch.tplink.on
            args:
                device: Fan

    -
        action: tts.google.say
        args:
            text: Welcome home

    -
        action: music.mpd.play
        args:
            resource: spotify:user:1166720951:playlist:0WGSjpN497Ht2wYl0YTjvz