rednet.open("left")

local mainID = 15

local function forward(count)
	for k = 1,count do
		turtle.forward()
	end
end

local function goUp(count)
	for k = 1,count do
		turtle.up()
	end
end

local function goDown(count)
	for k = 1,count do
		turtle.down()
	end
end

while true do
	while turtle.getItemCount() == 0 do    --Get items
		if not turtle.suck() then
			rednet.send(mainID, "home")
			sleep(.5)
			local a = 5
			while a ~= 0 do
				rednet.send(mainID, tostring(a))
				sleep(60)
			end
			rednet.send(mainID, tostring(a))
		end
	end
	
	rednet.send(mainID, "away")
	local data = turtle.getItemDetail()
	
	if data.name == "minecraft:log" then    --Sort logs
		turtle.turnRight()
		turtle.turnRight()
		forward(8)
		turtle.turnLeft()
		goDown(2)
		if not turtle.drop() then	--Try to put in one of 3 chests
			goDown(1)
			if not turtle.drop() then
				turtle.dropDown()
				goUp(1)
			end
			goUp(1)
		end
		goUp(2)
		turtle.turnLeft()
		forward(8)
	elseif data.name == "minecraft:sapling" then    --Sort saplings
		turtle.turnRight()
		goDown(2)
		if not turtle.drop() then
			goDown(1)
			if not turtle.drop() then
				turtle.dropDown()
			end
			goUp(1)
		end
		goUp(2)
	elseif data.name == "minecraft:coal" then	--Sort charcoal, refuel if needed
		if turtle.getFuelLevel() < (turtle.getFuelLimit() - 5120) then
			turtle.refuel()
		else
			goDown(3)
			turtle.dropDown()
			goUp(3)
		end
	else	--Sort everything else
		turtle.turnRight()
		turtle.turnRight()
		forward(8)
		turtle.turnLeft()
		goDown(4)
		if not turtle.drop() then
			turtle.dropDown()
		end
		goUp(4)
		turtle.turnLeft()
		forward(8)
	end
end

rednet.close("left")