Cannot add to playlists and view playlists and app crashes on next startup

[mytja]

Describe the bug
There are a lot of bugs. They are described bellow

To Reproduce
Steps to reproduce the behavior:

1. Get latest version from main branch
2. Do flutter run
3. Create a playlist
4. Add a song to playlist
5. Click on playlist
6. Get an error
7. Close a app
8. Open the app
9. Startup error

While I was checking JSON, I noticed, that playlist JSON is completly empty.

After clearing cache AND data, it starts working again, but only until you repeat those steps.

This error also occours when I set the server & restart the app.

I tried debugging it, but Exceptions aren't very detailed, but it seems the error occours somewhere here: https://github.com/alexmercerind/harmonoid/blob/master/lib/main.dart#L21-L54

Expected behavior
The app, changing server, JSON writing and playlists should be working fine

Screenshots
I created a playlist:

Clicked on a playlist:

Closed the app and reopened it:

Smartphone (please complete the following information):

• Device: Samsung Galaxy A21s
• OS: Android 10 - OneUI 2.1
• Version Latest from master

Thank you so much for your time

[raitonoberu]

Huh, I remember fixing the same bug.. https://github.com/alexmercerind/harmonoid/commit/ab2773d3dd64b190fedff37aec9903eaa05c3c57
Why is this happening again?

[mytja]

I really don't know

[alexmercerind]

@mytja are you using last "stable" build or the one from master? (Sorry I read your message now). Some of @raitonoberu's bug-fixes were really crucial & I'm glad he took the lead.
(I added so many things at the end with little to no testing, so bug-fixes were left). I'll have a look, I'm kinda feeling good to be back here on GitHub now.

I tried debugging it, but Exceptions aren't very detailed, but it seems the error occours somewhere here:
https://github.com/alexmercerind/harmonoid/blob/master/lib/main.dart#L21-L54

The exception isn't much detailed because we're just catching single exception without whole call stack.

Thanks for detailed reproduction steps.

[alexmercerind]

OT: Is the Discord server still up?

[raitonoberu]

I'm sorry you're a couple of days late.

[alexmercerind]

Maybe GitHub discussions are cool enough now. 🙂

[mytja]

I'm using latest from master
I did flutter run when i cloned it

[alexmercerind]

This could result in many other problems, I didn't notice that I wasn't using the fromMap method as every other place in the source.

[mytja]

Thank you so much
I will test it now

EDIT:
It works.
Thank you so much