require("inventory")
require("pathfinding")
require("fluids")
sfx = require("sfx")

press_pos = vector.new(1,0,0)
deployer_pos = vector.new(2,0,0)
furnace_pos = vector.new(4,2,0)
saw_pos = vector.new(3,1,0)
saw_out_pos = vector.new(2,0,0)
mill_pos = vector.new(4,0,0)
mixer_pos = vector.new(-1,0,0)
compactor_pos = vector.new(-2,0,0)
spout_pos = vector.new(-3,0,0)
melter_pos = vector.new(-4,1,-3)
casting_table_pos = vector.new(-3,0,-3)

function spout(extra_items)
	local fluid = extra_items[1]
	if not fluid then
		error("no fluid specified")
	end
	goTo(spout_pos, "south")
	insertDepot(1)
	selectFluidDevice("spout")
	connectTanks({fluid.name})
	pumpToDevices(true)
	sleep(10)
	pumpToDevices(false)
	goTo(spout_pos, "south")
	takeDepot()
	fluidInvAdd(fluid.name, -fluid.count)
	pumpToTanks(true)
	goTo(spout_pos, "south")
	while #pFront("tanks")[1].amount > 0 do
		sleep(0.5)
	end
	pumpToTanks(false)
end
function saw(_)
	goTo(saw_pos, "south")
	turtle.drop()
	goTo(saw_out_pos, "south")
	takeDepot()
end
function mill(extra_items)
	goTo(mill_pos,"south")
	item_count = 0
	if turtle.getItemCount() ~= 0 then
		item_count = 1
	end
	insertForward(1, 1)
	for _,item in pairs(extra_items) do
		item_count = item_count + item.count
		selectItem(item.name)
		insertForward(1, item.count)
	end
	print(item_count,"items")
	while pFront("getItemDetail", 1) do
		sleep(0.1)
	end
	for i = 2, 10 do
		takeForward(i)
	end
end
function deploy(extra_items)
	-- extra_items should only be one item
	goTo(deployer_pos, "south")
	insertDepot(1)
	goUp()
	goUp()
	selectItem(extra_items[1].name)
	turtle.dropUp(1)
	pFront("pullItem", "top")

	goDown()
	goDown()
	takeDepot()
end
function deploy_tool(extra_items)
	-- extra_items should only be one item
	goTo(deployer_pos, "south")
	insertDepot(1)
	goUp()
	goUp()
	selectItem(extra_items[1].name)
	turtle.dropUp(1)
	pFront("pullItem", "top")

	goDown()
	goDown()
	takeDepot()
	goUp()
	goUp()
	pFront("pushItem", "top")
	turtle.suckUp()
end
function furnace(extra_items)
	goTo(furnace_pos, "south")
	item_count = 0
	if turtle.getItemCount() ~= 0 then
		item_count = 1
	end
	insertForward(1, 1)
	for _,item in pairs(extra_items) do
		item_count = item_count + item.count
		selectItem(item.name)
		insertForward(1, item.count)
	end
	wait_time = 10 * item_count
	-- TODO refuel
	sleep(wait_time)
	takeForward(3)
end
function press(_)
	goTo(press_pos, "south")
	insertDepot(1)
	sleep(1)
	takeDepot()
end
function compact(extra_items)
	printError("unimplemented :3")
	sfx.fail()
end
function make_water(_,_,yield)
	selectFluidDevice("water_source")
	connectTanks({"water"})
	pumpToTanks(true)
	print("waiting 30s for water tanks to fill")
	sleep(30)
	pumpToTanks(false)
	fluidInvAdd("water", yield)
end
function alloy(parts, product)
	for _, item in pairs(parts) do
		if not isFluid[item.name] then
			error(item.name .. " is not a known fluid, but was used in alloy")
		end
	end
	selectFluidDevice("mixer")
	connectTanks(parts)
	pumpToDevices(true)
	goTo(mixer_pos, "south")
	-- TODO
	--[[
	wait until at least one input fluid is used up
	if two remain, it needs to keep track of which tank gets what when draining
	]]

	-- while true do

	-- end
	pumpToDevices(false)
end
function melt(_, product, yield)
	goTo(melter_pos, "north")
	goUp()
	turtle.drop()
	selectFluidDevice("melter")
	connectTankOrAssign(product)
	pumpToTanks(true)
	goTo(melter_pos, "north")
	while #pFront("items") > 0 do
		sleep(1)
	end
	pumpToTanks(false)
	fluidInvAdd(product, yield)
end
function mix(extra_items, product, yield)
	-- prepare fluids
	local fluids = {}
	for index, item in pairs(extra_items) do
		if isFluid[item.name] then
			table.insert(fluids, item)
			extra_items[index] = nil
		end
	end
	if #fluids > 0 then
		print("mixing with fluids", fluids[1])
		selectFluidDevice("mixer")
		connectTanks({fluids[1].name})
		pumpToDevices(true)
		sleep(10)
		pumpToDevices(false)
	end
	-- print("aaa")
	-- read()
	-- mix
	goTo(mixer_pos, "south")
	insertForward(1, 1)
	for _, item in pairs(extra_items) do
		selectItem(item.name)
		insertForward(nil, item.count)
	end
	goUp()
	goUp()
	goDown()
	goDown()
	sleep(10)
	-- todo wait until ingredients are gone
	takeForward(10)
	-- todo empty fluids
end
function craft(extra_items)
	local slot = 0
	for _, item in pairs(extra_items) do
		slot = slot + 1
		if slot == 4 then
			slot = 5
		elseif slot == 8 then
			slot = 9
		end
		if item.name ~= "nil" then
			turtle.select(slot)
			takeItems(item.name, item.count)
		end
	end
	turtle.craft()
end

return {
	mill = mill,
	deploy = deploy,
	deploy_tool = deploy_tool,
	furnace = furnace,
	press = press,
	compact = compact,
	mix = mix,
	craft = craft,
	alloy = alloy,
	melt = melt,
	saw = saw,
	spout = spout,
	make_water = make_water,
}