[Image Editor] Implement backend endpoints for MiniPaint

[ValeriaMaltseva]

Currently, we have a fake implementation in the controller for the MiniPaint image editor. We need to replace these temporary actions with actual backend endpoints that will handle requests for working with images in the MiniPaint image editor.

Current implementation:

• src/Controller/ImageEditorController.php
• templates/image-editor/editor.html.twig

Need:

1. Add the endpoint GET / image-editor (https://github.com/pimcore/studio-ui-bundle/pull/816/files#diff-d87357d60aee0b716fcf1bc05ece8afd5c8cfcc808294b1566df9df3b0b1b713R35)
2. Add the endpoint GET / get-asset (https://github.com/pimcore/studio-ui-bundle/pull/816/files#diff-d87357d60aee0b716fcf1bc05ece8afd5c8cfcc808294b1566df9df3b0b1b713R55)
3. Update the endpoint /pimcore-studio/api/assets/{id}/image/stream/custom by making the resizeMode parameter optional.

[markus-moser]

I would say 1. should stay in the UI bundle as it is UI related and not an API topic.

But we need an endpoint to be able to save the edited image:

https://github.com/pimcore/studio-ui-bundle/pull/816/files#diff-7489a70b7ce17ad8af67f5e1a2093f625c14ba490f5951d2cb81b1d9e3af2f53R144

[lukmzig]

@ValeriaMaltseva @markus-moser

• please use update endpoint for asset editor updates, we extended it here [Image Editor] Add adapter to update data sent from asset editor #641
• regarding point 2, the asset can be obtained here https://github.com/pimcore/studio-backend-bundle/blob/1.x/src/Asset/Controller/GetController.php#L52
• point 3 will be done as part of this issue [Asset] Stream image thumbnail action improvements #624

[markus-moser]

@lukmzig Thanks a lot, but regarding 2 - we would need a stream of the binary content of the asset not the json.

[ValeriaMaltseva]

@lukmzig Thanks! 😊

[lukmzig]

@markus-moser @ValeriaMaltseva I added new endpoint now which returns the binary stream of the original asset based on the ID
https://github.com/pimcore/studio-backend-bundle/blob/1.x/src/Asset/Controller/Image/StreamController.php#L65