-- local reference to the translator
local S = factory.S

function factory.ind_furnace_active(percent, item_percent)
    local formspec =
	"size[8,8.5]"..
	factory_gui_bg..
	factory_gui_bg_img..
	factory_gui_slots..
	"list[current_name;src;2.75,0.5;1,1;]"..
	"list[current_name;fuel;2.75,2.5;1,1;]"..
	"image[2.75,1.5;1,1;factory_ind_furnace_fire_bg.png^[lowpart:"..
	(100-percent)..":factory_ind_furnace_fire_fg.png]"..
        "image[3.75,1.5;1,1;gui_ind_furnace_arrow_bg.png^[lowpart:"..
        (item_percent*100)..":gui_ind_furnace_arrow_fg.png^[transformR270]"..
	"list[current_name;dst;4.75,0.5;2,2;]"..
	"list[current_player;main;0,4.25;8,1;]"..
	"list[current_player;main;0,5.5;8,3;8]"..
	factory.get_hotbar_bg(0,4.25)..
	"listring[current_player;main]"..
	"listring[current_name;src]"..
	"listring[current_player;main]"..
	"listring[current_name;fuel]"..
	"listring[current_player;main]"..
	"listring[current_name;dst]"
    return formspec
  end

function factory.ind_furnace_active_formspec(pos, percent)
	local meta = minetest.get_meta(pos)
	local inv = meta:get_inventory()
	local srclist = inv:get_list("src")
	local cooked
	if srclist then
		cooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
	end
	local item_percent = 0
	if cooked then
		item_percent = meta:get_float("src_time")/cooked.time
	end

  return factory.ind_furnace_active(percent, item_percent)
end

factory.ind_furnace_inactive_formspec =
	"size[8,8.5]"..
	factory_gui_bg..
	factory_gui_bg_img..
	factory_gui_slots..
	"list[current_name;src;2.75,0.5;1,1;]"..
	"list[current_name;fuel;2.75,2.5;1,1;]"..
	"image[2.75,1.5;1,1;factory_ind_furnace_fire_bg.png]"..
	"image[3.75,1.5;1,1;gui_ind_furnace_arrow_bg.png^[transformR270]"..
	"list[current_name;dst;4.75,0.5;2,2;]"..
	"list[current_player;main;0,4.25;8,1;]"..
	"list[current_player;main;0,5.5;8,3;8]"..
	factory.get_hotbar_bg(0,4.25)..
	"listring[current_player;main]"..
	"listring[current_name;src]"..
	"listring[current_player;main]"..
	"listring[current_name;fuel]"..
	"listring[current_player;main]"..
	"listring[current_name;dst]"

factory.register_machine("factory:ind_furnace",{
  description = S("Industrial Furnace"),
  inv_lists = {src = 1, fuel = 1, dst = 4},
  groups = {cracky=3},
  on_construct = function(pos)
    local meta = minetest.get_meta(pos)
    meta:set_string("formspec", factory.ind_furnace_inactive_formspec)
  end,
},{
  tiles = {"factory_machine_brick_1.png", "factory_machine_brick_2.png", "factory_machine_side_1.png",
    "factory_machine_side_1.png", "factory_machine_side_1.png", "factory_ind_furnace_front.png"},
  legacy_facedir_simple = true,
  on_destruct = function(pos)
   factory.smoke_on_tube(pos, false)
  end,
  allow_metadata_inventory_put = function(pos, listname, _, stack)
    -- args: pos, listname, index, stack, player
    local meta = minetest.get_meta(pos)
    local inv = meta:get_inventory()
    if listname == "fuel" then
      if minetest.get_craft_result({method="fuel",width=1,items={stack}}).time ~= 0 then
        if inv:is_empty("src") then
          meta:set_string("infotext",S("@1 is empty", S("Industrial Furnace")))
        end
        return stack:get_count()
      else
        return 0
      end
    elseif listname == "src" then
      return stack:get_count()
    elseif listname == "dst" then
      return 0
    end
  end,
  allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, _, count)
    local meta = minetest.get_meta(pos)
    local inv = meta:get_inventory()
    local stack = inv:get_stack(from_list, from_index)
    if to_list == "fuel" then
      if minetest.get_craft_result({method="fuel",width=1,items={stack}}).time ~= 0 then
        if inv:is_empty("src") then
          meta:set_string("infotext",S("@1 is empty", S("Industrial Furnace")))
        end
        return count
      else
        return 0
      end
    elseif to_list == "src" then
      return count
    elseif to_list == "dst" then
      return 0
    end
  end,
})

factory.register_machine("factory:ind_furnace_active",{
  description = S("Industrial Furnace (burning)"),
  inv_lists = {src = 1, fuel = 1, dst = 4},
  groups = {cracky=3, not_in_creative_inventory=1, hot=1},
  on_construct = function(pos)
    local meta = minetest.get_meta(pos)
    meta:set_string("formspec", factory.ind_furnace_inactive_formspec)
  end,
},{
  tiles = {
    "factory_machine_brick_1.png",
    "factory_machine_brick_2.png",
    "factory_machine_side_1.png",
    "factory_machine_side_1.png",
    "factory_machine_side_1.png",
    {
      image = "factory_ind_furnace_front_active.png",
      backface_culling = false,
      animation = {
        type = "vertical_frames",
        aspect_w = 32,
        aspect_h = 32,
        length = 1.5
      },
    }
  },
  light_source = 14,
  drop = "factory:ind_furnace",
  legacy_facedir_simple = true,
  on_destruct = function(pos)
   factory.smoke_on_tube(pos, false)
  end,
  allow_metadata_inventory_put = function(pos, listname, _, stack)
    -- args: pos, listname, index, stack, player
    local meta = minetest.get_meta(pos)
    local inv = meta:get_inventory()
    if listname == "fuel" then
      if minetest.get_craft_result({method="fuel",width=1,items={stack}}).time ~= 0 then
        if inv:is_empty("src") then
          meta:set_string("infotext",S("@1 is empty",S("Industrial Furnace")))
        end
        return stack:get_count()
      else
        return 0
      end
    elseif listname == "src" then
      return stack:get_count()
    elseif listname == "dst" then
      return 0
    end
  end,
  allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, _, count)
    local meta = minetest.get_meta(pos)
    local inv = meta:get_inventory()
    local stack = inv:get_stack(from_list, from_index)
    if to_list == "fuel" then
      if minetest.get_craft_result({method="fuel",width=1,items={stack}}).time ~= 0 then
        if inv:is_empty("src") then
          meta:set_string("infotext",S("@1 is empty",S("Industrial Furnace")))
        end
        return count
      else
        return 0
      end
    elseif to_list == "src" then
      return count
    elseif to_list == "dst" then
      return 0
    end
  end,
})

minetest.register_abm({
	nodenames = {"factory:ind_furnace","factory:ind_furnace_active"},
	interval = 1.0,
	chance = 1,
	action = function(pos, node)
		local meta = minetest.get_meta(pos)
		for _, name in ipairs({
				"fuel_totaltime",
				"fuel_time",
				"src_totaltime",
				"src_time"
		}) do
			if meta:get_string(name) == "" then
				meta:set_float(name, 0.0)
			end
		end

		local inv = meta:get_inventory()

		if not factory.smoke_on_tube(pos, node.name == "factory:ind_furnace_active") then
		  -- reset cooking
      meta:set_float("fuel_time", meta:get_float("fuel_totaltime"))
      meta:set_float("src_time", 0)

      -- deactivate
      factory.swap_node(pos,"factory:ind_furnace")
      meta:set_string("formspec", factory.ind_furnace_inactive_formspec)
      meta:set_string("infotext",S("@1 has no smoke tube",S("Industrial Furnace")))

      return
		end

		local srclist = inv:get_list("src")
		local cooked = nil
		local aftercooked

		if srclist then
			cooked, aftercooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
		end

		local was_active = false

		if meta:get_float("fuel_time") < meta:get_float("fuel_totaltime") then
			was_active = true
			meta:set_float("fuel_time", meta:get_float("fuel_time") + 0.65)
			meta:set_float("src_time", meta:get_float("src_time") + 1.2)
			if cooked and cooked.item and meta:get_float("src_time") >= cooked.time then
				-- check if there's room for output in "dst" list
				if inv:room_for_item("dst",cooked.item) then
					-- Put result in "dst" list
					inv:add_item("dst", cooked.item)
					-- take stuff from "src" list
					inv:set_stack("src", 1, aftercooked.items[1])
				else
					factory.log.info("Could not insert '"..cooked.item:to_string().."'")
				end
				meta:set_string("src_time", 0)
			end
		end

		if meta:get_float("fuel_time") < meta:get_float("fuel_totaltime") then
			local percent = math.floor(meta:get_float("fuel_time") /
					meta:get_float("fuel_totaltime") * 100)
			meta:set_string("infotext",S("Industrial Furnace is smelting, fuel current used: @1%",percent))
			factory.swap_node(pos,"factory:ind_furnace_active")
			meta:set_string("formspec",factory.ind_furnace_active_formspec(pos, percent))
			return
		end

		local fuel, afterfuel
		cooked = nil
		local fuellist = inv:get_list("fuel")
		srclist = inv:get_list("src")

		if srclist then
			cooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
		end
		if fuellist then
			fuel, afterfuel = minetest.get_craft_result({method = "fuel", width = 1, items = fuellist})
		end

		if not fuel or fuel.time <= 0 then
			meta:set_string("infotext",S("@1 has no fuel to burn", S("Industrial Furnace")))
			factory.swap_node(pos,"factory:ind_furnace")
			meta:set_string("formspec", factory.ind_furnace_inactive_formspec)
			return
		end

		if cooked.item:is_empty() then
			if was_active then
				meta:set_string("infotext",S("@1 is empty", S("Industrial Furnace")))
				factory.swap_node(pos,"factory:ind_furnace")
				meta:set_string("formspec", factory.ind_furnace_inactive_formspec)
			end
			return
		end

		meta:set_string("fuel_totaltime", fuel.time)
		meta:set_string("fuel_time", 0)

		inv:set_stack("fuel", 1, afterfuel.items[1])
	end,
})