Small pictures cannot be uploaded, but we know it too late

[monsieurtanuki]

What

• When we try to upload a picture that is deemed too small by the server, we get a localized error message at the background task level and that's it.
  "Background task error (Exception: Could not upload picture: status not ok / La photo est trop petite. Attention à ne pas envoyer de photos prises sur Internet. Merci de n'envoyer que vos propres photos.)"
• And the background task will be run again and again, and will always fail.
• That brings inconsistency, as on the server the picture is not visible (as it was never uploaded) and on the user device the picture is considered OK.

Several solutions:

• know in advance the limit sizes of the pictures for the server, so that we can reject from the app pictures that are too small
• know when a picture was rejected because it was too small - for the moment we only get a localized message AFAIK (and it could fail for other reasons)
• be able to warn the user that the picture was rejected because it was too small, and clean the device by removing the transient file and the background task

Steps to reproduce the behavior

1. Try to upload a very small picture
2. Go to the background task page
3. See that background task is still there, and failed

[monsieurtanuki]

@stephanegigandet What is the minimum size (in pixels) of a picture that we upload, below which the server rejects it?

[stephanegigandet]

@monsieurtanuki here's the size requirement server side:

# Check the image is big enough so that we do not get thumbnails from other sites
		if (
			(($source->Get('width') < 640) and ($source->Get('height') < 160))

[stephanegigandet]

so we need an image with a width >= 640, or a height >= 160

[monsieurtanuki]

@stephanegigandet Thank you, I'll impact that in Smoothie.

[monsieurtanuki]

@stephanegigandet By the way it looks like the 640x160 minimum size is enforced on the server side for new picture uploads, but not the crop on existing pictures, am I right?

[stephanegigandet]

@stephanegigandet By the way it looks like the 640x160 minimum size is enforced on the server side for new picture uploads, but not the crop on existing pictures, am I right?

@monsieurtanuki that's correct, the size is only for the upload of the image, not the cropping.

[monsieurtanuki]

@monsieurtanuki that's correct, the size is only for the upload of the image, not the cropping.

@stephanegigandet OK, then we're done in Smoothie: we enforce the minimum size only for image uploads.