--[[

	TechAge
	=======

	Copyright (C) 2019-2022 Joachim Stolberg

	AGPL v3
	See LICENSE.txt for more information

	TA2/TA3/TA4 Electronic Fab

]]--

-- for lazy programmers
local M = minetest.get_meta
-- Consumer Related Data
local CRD = function(pos) return (minetest.registered_nodes[techage.get_node_lvm(pos).name] or {}).consumer end

local S = techage.S
local STANDBY_TICKS = 3
local COUNTDOWN_TICKS = 4
local CYCLE_TIME = 6

local recipes = techage.recipes

local RecipeType = {
	[2] = "ta2_electronic_fab",
	[3] = "ta3_electronic_fab",
	[4] = "ta4_electronic_fab",
}

local function formspec(self, pos, nvm)
	local rtype = RecipeType[CRD(pos).stage]
	local owner = M(pos):get_string("owner")
	return "size[8.4,8.4]"..
		"list[context;src;0,0;2,4;]"..
		recipes.formspec(2.2, 0, rtype, nvm, owner)..
		"list[context;dst;6.4,0;2,4;]"..
		"image_button[3.7,3.3;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
		"tooltip[3.7,3.3;1,1;"..self:get_state_tooltip(nvm).."]"..
		"list[current_player;main;0.2,4.5;8,4;]"..
		"listring[context;dst]"..
		"listring[current_player;main]"..
		"listring[context;src]"..
		"listring[current_player;main]"..
		default.get_hotbar_bg(0.2, 4.5)
end

local function allow_metadata_inventory_put(pos, listname, index, stack, player)
	if minetest.is_protected(pos, player:get_player_name()) then
		return 0
	end
	local crd = CRD(pos)
	if listname == "src" then
		crd.State:start_if_standby(pos)
		return stack:get_count()
	end
	return 0
end

local function allow_metadata_inventory_move(pos, from_list, from_index, to_list, to_index, count, player)
	local meta = minetest.get_meta(pos)
	local inv = meta:get_inventory()
	local stack = inv:get_stack(from_list, from_index)
	return allow_metadata_inventory_put(pos, to_list, to_index, stack, player)
end

local function allow_metadata_inventory_take(pos, listname, index, stack, player)
	if minetest.is_protected(pos, player:get_player_name()) then
		return 0
	end
	return stack:get_count()
end

local function get_original_waste(inv, waste)
	-- Waste has meta data, so we need to find the original waste item
	for i = 1, 8 do
		local stack = inv:get_stack("src", i)
		if stack:get_count() == 1 then
			if stack:get_name() == waste:get_name() then
				return stack
			end
		end
	end
	return waste
end

local function making(pos, crd, nvm, inv)
	local owner = M(pos):get_string("owner")
	local rtype = RecipeType[crd.stage]
	local recipe = recipes.get(nvm, rtype, owner)
	local output = ItemStack(recipe.output.name .. " " .. recipe.output.num)
	local waste = recipe.waste and ItemStack(recipe.waste.name .. " " .. recipe.waste.num)
	if inv:room_for_item("dst", output) and (not waste or inv:room_for_item("dst", waste)) then
		for _,item in ipairs(recipe.input) do
			local input = ItemStack(item.name.." "..item.num)
			if not inv:contains_item("src", input) then
				crd.State:idle(pos, nvm)
				return
			end
		end
		-- For some recipes, an item customized via metadata is used as a copy template. 
		-- This allows specially programmed items such as ROM chips to be produced.
		-- The metadata of the copy template must be passed to the on_production function.
		-- At the same time, the metadata of the copy template must not be lost when moving
		-- as 'waste' to the output inventory.
		local idef = minetest.registered_items[recipe.output.name]
		if waste and idef and idef.on_production then
			waste = get_original_waste(inv, waste)
			local metadata = waste:get_meta():to_table().fields or {}
			output = idef.on_production(output, metadata)
		end
		for _,item in ipairs(recipe.input) do
			local input = ItemStack(item.name.." "..item.num)
			inv:remove_item("src", input)
		end
		inv:add_item("dst", output)
		if waste then
			inv:add_item("dst", waste)
		end
		crd.State:keep_running(pos, nvm, COUNTDOWN_TICKS)
		return
	end
	crd.State:idle(pos, nvm)
end

local function keep_running(pos, elapsed)
	local nvm = techage.get_nvm(pos)
	local crd = CRD(pos)
	local inv = M(pos):get_inventory()
	if inv then
		making(pos, crd, nvm, inv)
	end
end

local function on_receive_fields(pos, formname, fields, player)
	if minetest.is_protected(pos, player:get_player_name()) then
		return
	end

	local nvm = techage.get_nvm(pos)
	local crd = CRD(pos)

	if not nvm.running then
		recipes.on_receive_fields(pos, formname, fields, player)
	end

	crd.State:state_button_event(pos, nvm, fields)
	M(pos):set_string("formspec", formspec(crd.State, pos, nvm))
end

local function can_dig(pos, player)
	if minetest.is_protected(pos, player:get_player_name()) then
		return false
	end
	local inv = M(pos):get_inventory()
	return inv:is_empty("dst") and inv:is_empty("src")
end

local tiles = {}
-- '#' will be replaced by the stage number
tiles.pas = {
	-- up, down, right, left, back, front
	"techage_filling_ta#.png^techage_frame_ta#_top.png",
	"techage_filling_ta#.png^techage_frame_ta#.png",
	"techage_filling_ta#.png^techage_frame_ta#.png^techage_appl_outp.png",
	"techage_filling_ta#.png^techage_frame_ta#.png^techage_appl_inp.png",
	"techage_filling_ta#.png^techage_appl_electronic_fab.png^techage_frame_ta#.png",
	"techage_filling_ta#.png^techage_appl_electronic_fab.png^techage_frame_ta#.png",
}
tiles.act = {
	-- up, down, right, left, back, front
	"techage_filling_ta#.png^techage_frame_ta#_top.png",
	"techage_filling_ta#.png^techage_frame_ta#.png",
	"techage_filling_ta#.png^techage_frame_ta#.png^techage_appl_outp.png",
	"techage_filling_ta#.png^techage_frame_ta#.png^techage_appl_inp.png",
	{
		name = "techage_filling4_ta#.png^techage_appl_electronic_fab4.png^techage_frame4_ta#.png",
		backface_culling = false,
		animation = {
			type = "vertical_frames",
			aspect_w = 32,
			aspect_h = 32,
			length = 0.5,
		},
	},
	{
		name = "techage_filling4_ta#.png^techage_appl_electronic_fab4.png^techage_frame4_ta#.png",
		backface_culling = false,
		animation = {
			type = "vertical_frames",
			aspect_w = 32,
			aspect_h = 32,
			length = 0.5,
		},
	},
}

local tubing = {
	on_inv_request = function(pos, in_dir, access_type)
		if access_type == "push" then
			local meta = minetest.get_meta(pos)
			if meta:get_int("push_dir") == in_dir or in_dir == 5 then
				return meta:get_inventory(), "src"
			end
		end
	end,
	on_pull_item = function(pos, in_dir, num)
		local meta = minetest.get_meta(pos)
		if meta:get_int("pull_dir") == in_dir then
			local inv = M(pos):get_inventory()
			return techage.get_items(pos, inv, "dst", num)
		end
	end,
	on_push_item = function(pos, in_dir, stack, idx)
		local meta = minetest.get_meta(pos)
		if meta:get_int("push_dir") == in_dir  or in_dir == 5 then
			local inv = M(pos):get_inventory()
			--CRD(pos).State:start_if_standby(pos) -- would need power!
			return techage.put_items(inv, "src", stack, idx)
		end
	end,
	on_unpull_item = function(pos, in_dir, stack)
		local meta = minetest.get_meta(pos)
		if meta:get_int("pull_dir") == in_dir then
			local inv = M(pos):get_inventory()
			return techage.put_items(inv, "dst", stack)
		end
	end,
	on_recv_message = function(pos, src, topic, payload)
		return CRD(pos).State:on_receive_message(pos, topic, payload)
	end,
	on_beduino_receive_cmnd = function(pos, src, topic, payload)
		return CRD(pos).State:on_beduino_receive_cmnd(pos, topic, payload)
	end,
	on_beduino_request_data = function(pos, src, topic, payload)
		return CRD(pos).State:on_beduino_request_data(pos, topic, payload)
	end,
	on_node_load = function(pos)
		CRD(pos).State:on_node_load(pos)
	end,
}

local node_name_ta2, node_name_ta3, node_name_ta4 =
	techage.register_consumer("electronic_fab", S("Electronic Fab"), tiles, {
		drawtype = "normal",
		cycle_time = CYCLE_TIME,
		standby_ticks = STANDBY_TICKS,
		formspec = formspec,
		tubing = tubing,
		after_place_node = function(pos, placer)
			local inv = M(pos):get_inventory()
			inv:set_size("src", 8)
			inv:set_size("dst", 8)
		end,
		can_dig = can_dig,
		node_timer = keep_running,
		on_receive_fields = on_receive_fields,
		allow_metadata_inventory_put = allow_metadata_inventory_put,
		allow_metadata_inventory_move = allow_metadata_inventory_move,
		allow_metadata_inventory_take = allow_metadata_inventory_take,
		groups = {choppy=2, cracky=2, crumbly=2},
		sounds = default.node_sound_wood_defaults(),
		num_items = {0,1,1,1},
		power_consumption = {0,8,12,12},
	},
	{false, true, true, true})  -- TA2/TA3/TA4

minetest.register_craft({
	output = node_name_ta2,
	recipe = {
		{"group:wood", "default:diamond", "group:wood"},
		{"techage:tubeS", "basic_materials:gear_steel", "techage:tubeS"},
		{"group:wood", "default:steel_ingot", "group:wood"},
	},
})

minetest.register_craft({
	output = node_name_ta3,
	recipe = {
		{"", "default:diamond", ""},
		{"", node_name_ta2, ""},
		{"", "techage:vacuum_tube", ""},
	},
})

minetest.register_craft({
	output = node_name_ta4,
	recipe = {
		{"", "default:diamond", ""},
		{"", node_name_ta3, ""},
		{"", "techage:ta4_wlanchip", ""},
	},
})

techage.recipes.register_craft_type("ta2_electronic_fab", {
	description = S("TA2 Ele Fab"),
	icon = 'techage_filling_ta2.png^techage_appl_electronic_fab.png^techage_frame_ta2.png',
	width = 2,
	height = 2,
})
techage.recipes.register_craft_type("ta3_electronic_fab", {
	description = S("TA3 Ele Fab"),
	icon = 'techage_filling_ta3.png^techage_appl_electronic_fab.png^techage_frame_ta3.png',
	width = 2,
	height = 2,
})
techage.recipes.register_craft_type("ta4_electronic_fab", {
	description = S("TA4 Ele Fab"),
	icon = 'techage_filling_ta4.png^techage_appl_electronic_fab.png^techage_frame_ta4.png',
	width = 2,
	height = 2,
})
