perf(file-list): db pagination

[alperozturk96]

Issue

When user have a lot of files and/or folder in directory app crashes. Due to fetching all files at once from DB.

{
      "header": {
        "logLevel": "ERROR",
        "pid": 7829,
        "tid": 7849,
        "applicationId": "com.nextcloud.client",
        "processName": "com.nextcloud.client",
        "tag": "CursorWindow",
        "timestamp": {
          "seconds": 1787142876,
          "nanos": 504903577
        }
      },
      "message": "Failed to read row 615, column 5 from a window with 615 rows, 52 columns"
},

Changes

• Fetch batch by batch. Batch size is 100.
• Return ID from DB instead of FileEntity.

How to reproduce crash?

1. Have 2K files and 2K folders in root directory.
2. Keep scroll
3. Crash

[github-actions]

APK file: https://github.com/nextcloud/android/actions/runs/32258040777/artifacts/9367607142
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
(please click on link to get QR code displayed)

[github-actions]

APK file: https://github.com/nextcloud/android/actions/runs/33735450064/artifacts/9887294178
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
(please click on link to get QR code displayed)

[github-actions]

blue-Light-Screenshot test failed, but no output was generated. Maybe a preliminary stage failed.

[alperozturk96]

On master we only show 100 at root level. Is this expected @tobiasKaminsky ?

Shared tab needs to be checked as well.

[daniele-verducci]

Also, this bug is happening both on master and of course here:

• Log in
• Let it load the root folder: you have x files
• Add from another source 10k files (e.g. create them from terminal and then occ files:scan ...)
• Pull to refresh: the same files as before are shown
• Uninstall and reinstall the app, log in
• All the files, including the new ones, are shown

[github-actions]

Codacy

SpotBugs

Category	Base	New
Bad practice	35	35
Correctness	58	58
Dodgy code	195	195
Experimental	1	1
Malicious code vulnerability	2	2
Multithreaded correctness	26	26
Performance	37	37
Security	19	19
Total	373	373