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local Config = require('opus.config')

local device     = _G.device
local kernel     = _G.kernel
local os         = _G.os

do
	local config = Config.load('os')
	_G.network = setmetatable({ }, { __index = {
		getGroup = function() return config.group end,
		setGroup = function(name)
			config.group = name
		end
	}})
end

local function startNetwork()
	kernel.run(_ENV, {
		title = 'Net daemon',
		path = 'sys/apps/netdaemon.lua',
		hidden = true,
	})
end

local function setModem(dev)
	if not device.wireless_modem and dev.isWireless() then
		local config = Config.load('os')

		if not config.wirelessModem or
			config.wirelessModem == 'auto' or
			dev.name == config.wirelessModem then

			device.wireless_modem = dev
			os.queueEvent('device_attach', 'wireless_modem')
			return dev
		end
	end
end

-- create a psuedo-device named 'wireless_modem'
kernel.hook('device_attach', function(_, eventData)
	local dev = device[eventData[1]]
	if dev and dev.type == 'modem' then
		if setModem(dev) then
			startNetwork()
		end
	end
end)

kernel.hook('device_detach', function(_, eventData)
	if device.wireless_modem and eventData[1] == device.wireless_modem.name then
		device['wireless_modem'] = nil
		os.queueEvent('device_detach', 'wireless_modem')
	end
end)

for _,dev in pairs(device) do
	if dev.type == 'modem' then
		if setModem(dev) then
			break
		end
	end
end

if device.wireless_modem then
	print('waiting for network...')
	startNetwork()
	os.pullEvent('network_up')
end