Expose response data from service calls

[dakahler]

Hot off the presses, HA now allows service calls to return data. You pass it a variable name that you'd like to store the data in. Though ideally NetDaemon could return the data straight from CallService. This would be super handy to have!

https://www.home-assistant.io/docs/scripts/service-calls#use-templates-to-handle-response-data

[helto4real]

Yea I noticed and at some point I think we should support it.

[ab5000]

Bumping this, because I'd like to see this enhancement as well. (Forgive me if this is poor comment etiquette; I'm new here)

Thanks for all the great work you are doing!

[helto4real]

This is actually supported now. We just have not got the docs up and running for it.

    public async Task InitializeAsync(CancellationToken cancellationToken)
    {
        var result = await _ha.CallServiceWithResponseAsync("calendar", "list_events", ServiceTarget.FromEntity("calendar.cal"),
            data: new { start_date_time = "2023-07-21 00:00:00", end_date_time = "2023-07-22 03:00:00"});

        if (result is not null)
        {
            var events = result.Value.Deserialize<CalendarEvents>(_jsonOptions);
            if (events is null)
                _logger.LogWarning("No results!");
            else
                _logger.LogInformation("Events: {Events}", events);
        }
    } 

For the full sample:
https://github.com/net-daemon/netdaemon/blob/main/src/debug/DebugHost/apps/ServiceCall/ServiceApp.cs

[helto4real]

@dakahler @ab5000