Bind ChatPage for attachments in message

[JayKim94]

UWP.Services

• ChatHubService should provide method to upload SelectedFiles in ChatPage
• ChatHubService should provide method to download files from AttachmentsBlobName in Message model

UWP.ViewModels

• ChatViewModel should provide command for the view to invoke upload in ChatHubService with SelectedFiles in the view model
• ChatViewModel should provide command for the view to invoke download in ChatHubService with AttachmentBlobNames of a message

UWP.Views

• On ChatPage users should be able to see attachment files in a message and invoke the command in ChatViewModel on click

[JonasMuehlmann]

Check with @RayanMirzaie and @robbelDev before starting work on this.
AFAIK the first point is at least partially implemented and the second and third might be too.
Maybe have a look at their branches.

[JonasMuehlmann]

Also, please add a status label.

[JayKim94]

Check with @RayanMirzaie and @robbelDev before starting work on this.
AFAIK the first point is at least partially implemented and the second and third might be too.
Maybe have a look at their branches.

The interface is there, but not at all implemented

And this partially implemented method SelectedFile_Click in ChatPage should also be refactored to be inside ChatPageViewModel and should be forwarded from there to be handled by ChatHubService, not on the view element itself.

I have already checked branch Ryan and Robin for changes, but I believe there will be no further updates on this.
Same goes for the last two points, there is no issue for them to be worked on / being worked on. Therefore I will take over.

[robbelDev]

A Implementation of the SelectedFile_Click to the ChatPageViewModel and the Binding to the Listview is already done in Pull-request: #147 @JayKim94

[JayKim94]

A Implementation of the SelectedFile_Click to the ChatPageViewModel and the Binding to the Listview is already done in Pull-request: #147 @JayKim94

Oh okay nice! Then I remove the first requirement User should be able to attach files to the message and upload the files to the blob storage.

What about the other requirements? for example Users should be able to download the attachment files from the blob storage on click? Do Messages show AttachmentBlobNames on ChatPage?

[JayKim94]

Moved ChatPage related issues to a separate issue #150

[JayKim94]

Rewrote the requirements to clear up the intentions

[JayKim94]

The issue is still in development (temporarily suspended) #201

[JonasMuehlmann]

Adding some resources to reference:
https://stackoverflow.com/questions/57708520/how-to-solve-the-problem-of-permission-denied-while-reading-a-file-from-uwp-appl
https://stackoverflow.com/questions/63649511/unauthorizedaccessexception-when-reading-files-from-downloads-folder-in-uwp
https://docs.microsoft.com/en-us/windows/uwp/files/

[robbelDev]

Can some body explain me were the problem is (were in the code)? There is also gone some code while mergin and we need some design to display the attachments when opened and in the message? @JayKim94

[JonasMuehlmann]

@robbelDev The responsible file is the FileSharingService.cs.
The problem, as far as I understand, is that conventional ways of doing file operations(with System.IO) does not work in UWP apps because they are sandboxed. Instead, one has to use the Windows.Storage namespace. Another problem is that UWP apps, by default, only have access to a few specific locations in the file system, and we need to set permissions to access the remaining locations.

[robbelDev]

@JonasMuehlmann can you look up whether I uploaded some files? :)

[JonasMuehlmann]

@robbelDev Did you upload the folder 2021?