Revert "Kosync network callback"

[Galunid]

Reverts #6489 since it introduced problems for people having [*]Auto sync now and in the furture & Action when wifi off: prompt.

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This change is 

[NiLuJe]

Now that I'm back, remind me what was the issue that made you try this approach?

[Galunid]

@NiLuJe Kosync plugin doesn't adapt to your QoL wifi improvements, i.e. doesn't enable wifi when pushing/pulling progress and disabling it after. It just displays message along the lines of "Something went wrong, check your network"

[NiLuJe]

@Galunid: On which device?

[NiLuJe]

Ah, yeah, KOSync:getProgress and KOSync:updateProgress may be called without Wi-Fi (i.e., pagination).

There's not really much we can do, as they may be called at a lot of weird moments, and, the rerunWhenOnline stuff will (as it should) always show the relevant UI bits.

That said, on Kobo, with restore Wi-Fi on resume, it should behave properly in most cases, as it's frequent enough (I think?), that it should keep Wi-Fi alive.

[NiLuJe]

Frequent enough given an appropriate DAUTO_SAVE_PAGING_COUNT. Since that's gone now, a better fix would probably to make that threshold an actual plugin setting, as per the TODO ;).

[Galunid]

Yes, actually that's the reason I disabled Auto progress sync, since those weird times hung the device for ~30s. A better way to handle this would be to check if manual == true was passed when calling

koreader/plugins/kosync.koplugin/main.lua

Lines 533 to 545 in 1b904f0

	function KOSync:getProgress(manual)
	if not self.kosync_username or not self.kosync_userkey then
	if manual then
	promptLogin()
	end
	return
	end
	local KOSyncClient = require("KOSyncClient")
	local client = KOSyncClient:new{
	custom_url = self.kosync_custom_server,
	service_spec = self.path .. "/api.json"
	}

So if user called it, enable wifi, otherwise skip.