Open/Save/Rename for Electron

[lreading]

Describe what problem your feature request solves The electron build requires different logic for saving directly the file system. Users should only be prompted with the save file dialogue when they are creating a new threat model (not fully implemented yet)

Describe the solution you'd like Create electron specific logic that saves the threat model whenever the user clicks a "Save" button.

Additional context Currently, this logic is triggered from the threatmodel store. Additionally, there's service/save.js which is probably a good place to split the browser vs electron logic

[jgadsden]

This is a high priority for the electron desktop app - I will take this on next of that is OK? @lreading did you do any work on the local open/save of threat model files? I can not remember, but had a vague memory that you prototyped something? No problem either way, I am pretty sure that we can do this fairly easily

[lreading]

I believe I had it working just using the browser save (ergo download) feature. In electron, it would probably be best if we used the system save dialogue. I think the main difference is that using the browser download function, it will prompt the user for the save location each time they save, and by default append a number to the end if the file already exists. In the electron app, I think it would make more sense to overwrite an opened threat model by default. :smile:

[jgadsden]

Cool, thanks @lreading , I will go ahead and use the file system dialogs for open/save/silent-save from electron: https://www.electronjs.org/docs/latest/api/dialog/

also https://web.dev/file-system-access/ & https://github.com/GoogleChromeLabs/text-editor