Cached snapshot shown in notification

[ashen egret]

Hi all,

I have a notification which shows a short text and a snapshot when someone rings my doorbell. Right now an old picture is shown in the notification on my phone. I read online that this is a cache issue and more people are experiencing it. I thought about including the last triggered state of my automation in the filename of the snapshot so the automation has to pull an unique file name. This would prevent the automation from grabbing the cached file.

But I'm having trouble giving the file name the last triggered state of my automation.

I had this:

metadata: {}
data:
  filename: /config/www/doorbell/reolink-snapshot.jpg
target:
  entity_id: camera.reolink_video_doorbell_fluent

I tried this:

metadata: {}
data:
  filename: >-    /config/www/doorbell/reolink-snapshot.jpg?{{
states.automation.er_is_aangebeld.last_triggered}}
target:
  entity_id: camera.reolink_video_doorbell_fluent```

But it creates a file named: "reolink-snapshot.jpg?" which doesn't work.
Can anyone help me out with this?

Side question: I use google AI to create a message based on the image, but on Android the notification screen is too small to read the whole message. When I press and swipe down, it's still not fully shown. On Apple you can press and hold the notification to show all the text. Is there a solution for Android?

[gritty kayak]

Try: /config/www/doorbell/reolink-snapshot.jpg?{{as_timestamp(now())}}

The downside of this is that you need to write a script/cron job that deletes all old snapshots every now and then. I think you should define the image name as a variable because Now() changes constantly, so there might be a difference between the filename that you store and the filename that you retrieve.

Does anyone know how to delete files in the /www/ folder using an automation in HA?

(I did not test this by the way)

[ashen egret]

Yea because of that I thought about using the triggered time of the automation since that will be the same. It's eassier to retrieve. I'm not sure how to create a variable but I could try that.

[ashen egret]

I use this: https://github.com/chomupashchuk/delete-file-home-assistant which also enables the feature to remove files in an automation

Here is an example

but even when i remove the old file, the cached file is still shown in the notifcation, hence why i created this thread 🙂

[gritty kayak]

Thanks. I was looking for a core HA service for that so I can incorporate this in my blueprints.

[ashen egret]

Understandeble 🙂

[gritty kayak]

@ashen egret
You can try: /config/www/doorbell/reolink-snapshot.jpg?{{ state_attr('automation.er_is_aangebeld','last_triggered') }}

I tested this in the developer tools and it returns the last triggered value whereas your code does not return a value.

And to be sure you can remove the whitespaces like this:

/config/www/doorbell/reolink-snapshot.jpg?{{ state_attr('automation.er_is_aangebeld','last_triggered')|replace(' ','')}}

[ashen egret]

Thanks!

but the file extension is now the time and date

[gritty kayak]

Yes, that is the last_triggered time and date

That is what last_triggered returns

[ashen egret]

Yea, but now the file extension is incorrect, i can not open it

the date and time should be in the filename, not the file extension

[gritty kayak]

Oh wait...

[ashen egret]

if that makes sense 😄

[gritty kayak]

/config/www/doorbell/reolink-snapshot{{ state_attr('automation.er_is_aangebeld','last_triggered')|replace(' ','')}}.jpg

This should work (did not test it)

[ashen egret]

it works 🙂

do i also add this:

/config/www/doorbell/reolink-snapshot{{ state_attr('automation.er_is_aangebeld','last_triggered')|replace(' ','')}}.jpg

in the google ai part?

[gritty kayak]

Yes

[ashen egret]

and in the notification

[gritty kayak]

I do hope that that field accepts template code though

[gritty kayak]

Of course

[ashen egret]

ill test it now 😄

[gritty kayak]

And I hope your caching issue is solved as well

[ashen egret]

it should be, i also used this with your blueprint for the reolink doorbell. that BP also creates a new image for each visitor

[gritty kayak]

Now, you only need to remove the image afterwards

[ashen egret]

yep, it now works 😄

this part removes the image again

[gritty kayak]

With that custom integration I presume?

[ashen egret]

now i need to figure out how to show the full text in the notification in android, but thats something for another time

[ashen egret]

correct

[gritty kayak]

Great that it works!

Now get back to work! HAHAHAHHAHA

[ashen egret]

Ssssst!! 🤣

[gritty kayak]

🤐

[ashen egret]

thanks for the help! 🙂