Update function

The Server/Backend Need an update check.
It must check if there is a new Version from the backend, then download and install the new api.
Also it should send a notice message back to the user, that the Version on the Server is old and Need to update, when there is a major update like update the SQL Dump or secruity stuff like Password encryption!

[jklmnn]

I see two big points there:

• We need a stable branch with a stable address to check and load updates from.
• We must check the configuration of the user to stay upgraded and working at the same time. That is especially important if we make changes within the configuration.

Ok, I have a big Server, were we could hoste a ShoppingList_UpdateServer.
So, the app is checking, for a new backend and app Version on every start, if there is a Internet Connection.
On backup, the script will read the backup all old files, then clone the new Version and copy the config.php back.

So my way were:

• stable branch => testet for 4 weaks (secruity issues will fix directly)
• testing branch => test for 1 weak (secruity issues will fix directly)
• working / experimental branch => like the Name (secruity issues will fix directly)

[jklmnn]

Do we want to upgrade automatically or just show if there's an update available?
I had the idea that we could just use a stable branch and pull a version file from there and display that a new version is available.
I don't see why the app should look for that. The app itself is updated by f-droid, and not every app user want to be notified if there's a server update. That server update notification should only get to the admin. Maybe we could create a .deb and a .rpm?

[J-8]

We can add a checkbox to the app if the user wants to get notified on backend updates. Then we dont need a check for different user types.

I think the way with the checkbox is greate.

Ok, @jklmnn I think we should have to branchs, stable and working branch.
How exactly do you imagine that with the pull of file versions

[J-8]

If I add a check by the app then I need a function in api.php to give back the current version. type can be somewhere with 1000 again and content just the versioncode. Whatever you think is best.

[jklmnn]

@beli3ver you can access files of a branch directly by going to https://raw.githubusercontent.com/user/repo/branch/file
So we could just put a version.json into the repo and you would just access this file directly.
For example if you want to see the raw content of the README.md you have to look at https://raw.githubusercontent.com/GroundApps/ShoppingList_Backend/master/README.md

@jklmnn that is a really good way I thinl

[jklmnn]

I have added a PPA, view #45

[J-8]

Nice!
How do we deal with database updates? If the structure of the database changes, the old database would be useless.

If have been working on a php based update method, because like @beli3ver said, some do not have access to the shell.