View and Management Command to visualize Automation graph

[jacklinke]

Is your feature request related to a problem? Please describe.
In order to visualize Automations, there should be

• a view that provides a graphical image showing the automation flow (either a static image or maybe a graph using one of the popular js libraries?)
• a management command that provides outputs an image file (maybe using a similar approach to how django-extensions can outputs a django project's model structure with graphviz)

Additional context
I am working on building this functionality, but it might take a bit of time.

[fsbraun]

Sounds like a great idea.

For the first representation in the app I have been thinking (but not yet working) on an HTML/CSS only version, i.e. rendering by the browser. This would avoid a dependency. Layout probably should go from top to bottom to allow for long automations to be displayed.

The latter one might be useful for developers especially. As a thought only: Can this be kept simple if it produces a self-contained HTML/CSS file based on the view template?

Probably one has to invest a thought on how to handle structurally wrong automations which technically one can have in the code. Some kind of error checking might be necessary (or even beneficial to make the error transparent).