--[[
	Farming Redo Mod by TenPlus1
	NEW growing routine by prestidigitator
	auto-refill by crabman77
]]

-- Translation support

local S = minetest.get_translator("farming")

-- global

farming = {
	mod = "redo",
	version = "20240825",
	path = minetest.get_modpath("farming"),
	select = {type = "fixed", fixed = {-0.5, -0.5, -0.5, 0.5, -5/16, 0.5}},
	select_final = {type = "fixed", fixed = {-0.5, -0.5, -0.5, 0.5, -2.5/16, 0.5}},
	registered_plants = {},
	min_light = 12,
	max_light = 15,
	mapgen = minetest.get_mapgen_setting("mg_name"),
	use_utensils = minetest.settings:get_bool("farming_use_utensils") ~= false,
	mtg = minetest.get_modpath("default"),
	mcl = minetest.get_modpath("mcl_core"),
	mcl_hardness = 0.01,
	translate = S
}

-- determine which sounds to use, default or mcl_sounds

local function sound_helper(snd)

	farming[snd] = (farming.mtg and default[snd]) or (farming.mcl and mcl_sounds[snd])
			or function() return {} end
end

sound_helper("node_sound_defaults")
sound_helper("node_sound_stone_defaults")
sound_helper("node_sound_dirt_defaults")
sound_helper("node_sound_sand_defaults")
sound_helper("node_sound_gravel_defaults")
sound_helper("node_sound_wood_defaults")
sound_helper("node_sound_leaves_defaults")
sound_helper("node_sound_ice_defaults")
sound_helper("node_sound_metal_defaults")
sound_helper("node_sound_water_defaults")
sound_helper("node_sound_snow_defaults")
sound_helper("node_sound_glass_defaults")

-- check for creative mode or priv

local creative_mode_cache = minetest.settings:get_bool("creative_mode")

function farming.is_creative(name)
	return creative_mode_cache or minetest.check_player_privs(name, {creative = true})
end

-- stats, locals, settings, function helper

local statistics = dofile(farming.path .. "/statistics.lua")
local random = math.random
local floor = math.floor
local time_speed = tonumber(minetest.settings:get("time_speed")) or 72
local SECS_PER_CYCLE = (time_speed > 0 and (24 * 60 * 60) / time_speed) or 0
local function clamp(x, min, max)
	return (x < min and min) or (x > max and max) or x
end

-- return amount of day or night that has elapsed
-- dt is time elapsed, count_day if true counts day, otherwise night

local function day_or_night_time(dt, count_day)

	local t_day = minetest.get_timeofday()
	local t1_day = t_day - dt / SECS_PER_CYCLE
	local t1_c, t2_c  -- t1_c < t2_c and t2_c always in [0, 1)

	if count_day then

		if t_day < 0.25 then
			t1_c = t1_day + 0.75  -- Relative to sunup, yesterday
			t2_c = t_day  + 0.75
		else
			t1_c = t1_day - 0.25  -- Relative to sunup, today
			t2_c = t_day  - 0.25
		end
	else
		if t_day < 0.75 then
			t1_c = t1_day + 0.25  -- Relative to sundown, yesterday
			t2_c = t_day  + 0.25
		else
			t1_c = t1_day - 0.75  -- Relative to sundown, today
			t2_c = t_day  - 0.75
		end
	end

	local dt_c = clamp(t2_c, 0, 0.5) - clamp(t1_c, 0, 0.5)  -- this cycle

	if t1_c < -0.5 then

		local nc = floor(-t1_c)

		t1_c = t1_c + nc
		dt_c = dt_c + 0.5 * nc + clamp(-t1_c - 0.5, 0, 0.5)
	end

	return dt_c * SECS_PER_CYCLE
end

-- Growth Logic

local STAGE_LENGTH_AVG = tonumber(minetest.settings:get("farming_stage_length")) or 200
local STAGE_LENGTH_DEV = STAGE_LENGTH_AVG / 6

-- quick start seed timer

farming.start_seed_timer = function(pos)

	local timer = minetest.get_node_timer(pos)
	local grow_time = floor(random(STAGE_LENGTH_DEV, STAGE_LENGTH_AVG))

	timer:start(grow_time)
end

-- return plant name and stage from node provided

local function plant_name_stage(node)

	local name

	if type(node) == "table" then

		if node.name then name = node.name
		elseif node.x and node.y and node.z then
			node = minetest.get_node_or_nil(node)
			name = node and node.name
		end
	else
		name = tostring(node)
	end

	if not name or name == "ignore" then return nil end

	local sep_pos = name:find("_[^_]+$")

	if sep_pos and sep_pos > 1 then

		local stage = tonumber(name:sub(sep_pos + 1))

		if stage and stage >= 0 then
			return name:sub(1, sep_pos - 1), stage
		end
	end

	return name, 0
end

-- Map from node name to
-- { plant_name = ..., name = ..., stage = n, stages_left = { node_name, ... } }

local plant_stages = {}

farming.plant_stages = plant_stages

--- Registers the stages of growth of a (possible plant) node.
 -- @param node - Node or position table, or node name.
 -- @return - The (possibly zero) number of stages of growth the plant will go through
 --           before being fully grown, or nil if not a plant.

-- Recursive helper

local function reg_plant_stages(plant_name, stage, force_last)

	local node_name = plant_name and plant_name .. "_" .. stage
	local node_def = node_name and minetest.registered_nodes[node_name]

	if not node_def then return nil end

	local stages = plant_stages[node_name]

	if stages then return stages end

	if minetest.get_item_group(node_name, "growing") > 0 then

		local ns = reg_plant_stages(plant_name, stage + 1, true)
		local stages_left = (ns and { ns.name, unpack(ns.stages_left) }) or {}

		stages = {
			plant_name = plant_name,
			name = node_name,
			stage = stage,
			stages_left = stages_left
		}

		if #stages_left > 0 then

			local old_constr = node_def.on_construct
			local old_destr  = node_def.on_destruct

			minetest.override_item(node_name, {

				on_construct = function(pos)

					if old_constr then old_constr(pos) end

					farming.handle_growth(pos)
				end,

				on_destruct = function(pos)

					minetest.get_node_timer(pos):stop()

					if old_destr then old_destr(pos) end
				end,

				on_timer = function(pos, elapsed)
					return farming.plant_growth_timer(pos, elapsed, node_name)
				end,
			})
		end

	elseif force_last then

		stages = {
			plant_name = plant_name,
			name = node_name,
			stage = stage,
			stages_left = {}
		}
	else
		return nil
	end

	plant_stages[node_name] = stages

	return stages
end


local register_plant_node = function(node)

	local plant_name, stage = plant_name_stage(node)

	if plant_name then

		local stages = reg_plant_stages(plant_name, stage, false)

		return stages and #stages.stages_left
	end
end


local function set_growing(pos, stages_left)

	if not stages_left then return end

	local timer = minetest.get_node_timer(pos)

	if stages_left > 0 then

		if not timer:is_started() then

			local stage_length = statistics.normal(STAGE_LENGTH_AVG, STAGE_LENGTH_DEV)

			stage_length = clamp(stage_length, 0.5 * STAGE_LENGTH_AVG, 3.0 * STAGE_LENGTH_AVG)

			timer:set(stage_length, -0.5 * random() * STAGE_LENGTH_AVG)
		end

	elseif timer:is_started() then
		timer:stop()
	end
end

-- detects a crop at given position, starting or stopping growth timer when needed

function farming.handle_growth(pos, node)

	if not pos then return end

	local stages_left = register_plant_node(node or pos)

	if stages_left then set_growing(pos, stages_left) end
end

-- Just in case a growing type or added node is missed (also catches existing
-- nodes added to map before timers were incorporated).

minetest.register_abm({
	label = "Start crop timer",
	nodenames = {"group:growing"},
	interval = 300,
	chance = 1,
	catch_up = false,

	action = function(pos, node)

		-- skip if node timer already active
		if minetest.get_node_timer(pos):is_started() then return end

		-- check if group:growing node is a seed
		local def = minetest.registered_nodes[node.name]

		if def and def.groups and def.groups.seed then

			if def.on_timer then -- start node timer if found

				farming.start_seed_timer(pos)

				return
			end

			local next_stage = def.next_plant

			def = minetest.registered_nodes[next_stage]

			if def then -- switch seed without timer to stage_1 of crop

				local p2 = def.place_param2 or 1

				minetest.set_node(pos, {name = next_stage, param2 = p2})
			end
		else
			farming.handle_growth(pos, node) -- start normal crop timer
		end
	end
})

-- default check crop is on wet soil

farming.can_grow = function(pos)

	local below = minetest.get_node({x = pos.x, y = pos.y -1, z = pos.z})

	return minetest.get_item_group(below.name, "soil") >= 3
end

-- Plant timer function that grows plants under the right conditions.

function farming.plant_growth_timer(pos, elapsed, node_name)

	local stages = plant_stages[node_name]

	if not stages then return false end

	local max_growth = #stages.stages_left

	if max_growth <= 0 then return false end

	local chk1 = minetest.registered_nodes[node_name].growth_check -- old
	local chk2 = minetest.registered_nodes[node_name].can_grow -- new

	if chk1 then -- custom farming redo growth_check function

		if not chk1(pos, node_name) then return true end

	elseif chk2 then -- custom mt 5.9x farming can_grow function

		if not chk2(pos) then return true end

	-- default mt 5.9x farming.can_grow function
	elseif not farming.can_grow(pos) then return true end

	local growth
	local light_pos = {x = pos.x, y = pos.y, z = pos.z}
	local lambda = elapsed / STAGE_LENGTH_AVG

	if lambda < 0.1 then return true end

	local MIN_LIGHT = minetest.registered_nodes[node_name].minlight or farming.min_light
	local MAX_LIGHT = minetest.registered_nodes[node_name].maxlight or farming.max_light

	if max_growth == 1 or lambda < 2.0 then

		local light = (minetest.get_node_light(light_pos) or 0)

		if light < MIN_LIGHT or light > MAX_LIGHT then return true end

		growth = 1
	else
		local night_light = (minetest.get_node_light(light_pos, 0) or 0)
		local day_light = (minetest.get_node_light(light_pos, 0.5) or 0)
		local night_growth = night_light >= MIN_LIGHT and night_light <= MAX_LIGHT
		local day_growth = day_light >= MIN_LIGHT and day_light <= MAX_LIGHT

		if not night_growth then

			if not day_growth then return true end

			lambda = day_or_night_time(elapsed, true) / STAGE_LENGTH_AVG

		elseif not day_growth then

			lambda = day_or_night_time(elapsed, false) / STAGE_LENGTH_AVG
		end

		growth = statistics.poisson(lambda, max_growth)

		if growth < 1 then return true end
	end

	if minetest.registered_nodes[stages.stages_left[growth]] then

		local p2 = minetest.registered_nodes[stages.stages_left[growth] ].place_param2 or 1

		minetest.set_node(pos, {name = stages.stages_left[growth], param2 = p2})
	else
		return true
	end

	return growth ~= max_growth
end

-- refill placed plant by crabman (26/08/2015) updated by TenPlus1

function farming.refill_plant(player, plantname, index)

	local inv = player and player:get_inventory() ; if not inv then return end

	local old_stack = inv:get_stack("main", index)

	if old_stack:get_name() ~= "" then return end

	for i, stack in ipairs(inv:get_list("main")) do

		if stack:get_name() == plantname and i ~= index then

			inv:set_stack("main", index, stack)
			stack:clear()
			inv:set_stack("main", i, stack)

			return
		end
	end
end

-- Place Seeds on Soil

function farming.place_seed(itemstack, placer, pointed_thing, plantname)

	local pt = pointed_thing

	-- check if pointing at a node
	if not itemstack or not pt or pt.type ~= "node" then return end

	local under = minetest.get_node(pt.under)

	-- am I right-clicking on something that has a custom on_place set?
	-- thanks to Krock for helping with this issue :)
	local def = minetest.registered_nodes[under.name]

	if placer and itemstack and def and def.on_rightclick then
		return def.on_rightclick(pt.under, under, placer, itemstack, pt)
	end

	local above = minetest.get_node(pt.above)

	-- check if pointing at the top of the node
	if pt.above.y ~= pt.under.y + 1 then return end

	-- return if any of the nodes is not registered
	if not minetest.registered_nodes[under.name]
	or not minetest.registered_nodes[above.name] then return end

	-- can I replace above node, and am I pointing directly at soil
	if not minetest.registered_nodes[above.name].buildable_to
	or minetest.get_item_group(under.name, "soil") < 2
	or minetest.get_item_group(above.name, "plant") ~= 0 then return end

	-- is player planting seed?
	local name = placer and placer:get_player_name() or ""

	-- if not protected then add node and remove 1 item from the itemstack
	if not minetest.is_protected(pt.above, name) then

		local p2 = minetest.registered_nodes[plantname].place_param2 or 1

		minetest.set_node(pt.above, {name = plantname, param2 = p2})

		farming.start_seed_timer(pt.above)

		minetest.sound_play("default_place_node", {pos = pt.above, gain = 1.0})

		if placer and itemstack
		and not farming.is_creative(placer:get_player_name()) then

			local name = itemstack:get_name()

			itemstack:take_item()

			-- check for refill
			if itemstack:get_count() == 0 then

				minetest.after(0.2, farming.refill_plant,
						placer, name, placer:get_wield_index())
			end
		end

		return itemstack
	end
end

-- Function to register plants (default farming compatibility)

farming.register_plant = function(name, def)

	if not def.steps then return nil end

	local mname = name:split(":")[1]
	local pname = name:split(":")[2]

	-- Check def
	def.description = def.description or S("Seed")
	def.inventory_image = def.inventory_image or "unknown_item.png"
	def.minlight = def.minlight or 12
	def.maxlight = def.maxlight or 15

	-- Register seed
	minetest.register_node(":" .. mname .. ":seed_" .. pname, {

		description = def.description,
		tiles = {def.inventory_image},
		inventory_image = def.inventory_image,
		wield_image = def.inventory_image,
		drawtype = "signlike",
		groups = {
			seed = 1, snappy = 3, attached_node = 1, flammable = 2, growing = 1,
			compostability = 65, handy = 1
		},
		_mcl_hardness = farming.mcl_hardness,
		is_ground_content = false,
		paramtype = "light",
		paramtype2 = "wallmounted",
		walkable = false,
		sunlight_propagates = true,
		selection_box = farming.select,
		place_param2 = 1, -- place seed flat
		next_plant = mname .. ":" .. pname .. "_1",

		on_timer = function(pos, elapsed)

			local def = minetest.registered_nodes[mname .. ":" .. pname .. "_1"]

			if def then
				minetest.swap_node(pos, {name = def.next_plant, param2 = def.place_param2})
			end
		end,

		on_place = function(itemstack, placer, pointed_thing)

			return farming.place_seed(itemstack, placer, pointed_thing,
					mname .. ":seed_" .. pname)
		end
	})

	-- Register harvest
	minetest.register_craftitem(":" .. mname .. ":" .. pname, {
		description = pname:gsub("^%l", string.upper),
		inventory_image = mname .. "_" .. pname .. ".png",
		groups = def.groups or {flammable = 2},
	})

	-- Register growing steps
	for i = 1, def.steps do

		local base_rarity = 1

		if def.steps ~= 1 then
			base_rarity =  8 - (i - 1) * 7 / (def.steps - 1)
		end

		local drop = {
			items = {
				{items = {mname .. ":" .. pname}, rarity = base_rarity},
				{items = {mname .. ":" .. pname}, rarity = base_rarity * 2},
				{items = {mname .. ":seed_" .. pname}, rarity = base_rarity},
				{items = {mname .. ":seed_" .. pname}, rarity = base_rarity * 2},
			}
		}

		local sel = farming.select
		local g = {
			handy = 1, snappy = 3, flammable = 2, plant = 1, growing = 1,
			attached_node = 1, not_in_creative_inventory = 1,
		}

		-- Last step doesn't need growing=1 so Abm never has to check these
		-- also increase selection box for visual indication plant has matured
		if i == def.steps then
			sel = farming.select_final
			g.growing = 0
		end

		local node_name = mname .. ":" .. pname .. "_" .. i

		local next_plant = nil

		if i < def.steps then
			next_plant = mname .. ":" .. pname .. "_" .. (i + 1)
		end

		minetest.register_node(node_name, {
			drawtype = "plantlike",
			waving = 1,
			tiles = {mname .. "_" .. pname .. "_" .. i .. ".png"},
			paramtype = "light",
			paramtype2 = def.paramtype2,
			place_param2 = def.place_param2,
			walkable = false,
			buildable_to = true,
			sunlight_propagates = true,
			drop = drop,
			selection_box = sel,
			groups = g,
			_mcl_hardness = farming.mcl_hardness,
			is_ground_content = false,
			sounds = farming.node_sound_leaves_defaults(),
			minlight = def.minlight,
			maxlight = def.maxlight,
			next_plant = next_plant
		})
	end

	-- add to farming.registered_plants
	farming.registered_plants[mname .. ":" .. pname] = {
		crop = mname .. ":" .. pname,
		seed = mname .. ":seed_" .. pname,
		steps = def.steps,
		minlight = def.minlight,
		maxlight = def.maxlight
	}
--	print(dump(farming.registered_plants[mname .. ":" .. pname]))

	return {seed = mname .. ":seed_" .. pname, harvest = mname .. ":" .. pname}
end

-- default settings

farming.asparagus = 0.002
farming.eggplant = 0.002
farming.spinach = 0.002
farming.carrot = 0.001
farming.potato = 0.001
farming.tomato = 0.001
farming.cucumber = 0.001
farming.corn = 0.001
farming.coffee = 0.001
farming.melon = 0.001
farming.pumpkin = 0.001
farming.cocoa = true
farming.raspberry = 0.001
farming.blueberry = 0.001
farming.rhubarb = 0.001
farming.beans = 0.001
farming.grapes = 0.001
farming.barley = true
farming.chili = 0.003
farming.hemp = 0.003
farming.garlic = 0.001
farming.onion = 0.001
farming.pepper = 0.002
farming.pineapple = 0.001
farming.peas = 0.001
farming.beetroot = 0.001
farming.mint = 0.005
farming.cabbage = 0.001
farming.blackberry = 0.002
farming.soy = 0.001
farming.vanilla = 0.001
farming.lettuce = 0.001
farming.artichoke = 0.001
farming.parsley = 0.002
farming.sunflower = 0.001
farming.ginger = 0.002
farming.strawberry = 0.002
farming.grains = true
farming.rice = true

-- Load new global settings if found inside mod folder

local input = io.open(farming.path .. "/farming.conf", "r")

if input then dofile(farming.path .. "/farming.conf") ; input:close() end

-- load new world-specific settings if found inside world folder

local worldpath = minetest.get_worldpath()

input = io.open(worldpath .. "/farming.conf", "r")

if input then dofile(worldpath .. "/farming.conf") ; input:close() end

-- helper function to add {eatable} group to food items, also {flammable}

function farming.add_eatable(item, hp)

	local def = minetest.registered_items[item]

	if def then

		local groups = table.copy(def.groups) or {}

		groups.eatable = hp ; groups.flammable = 2

		minetest.override_item(item, {groups = groups})
	end
end

-- recipe item list and alternatives

dofile(farming.path .. "/item_list.lua")

-- setup soil, register hoes, override grass

if minetest.get_modpath("default") then
	dofile(farming.path .. "/soil.lua")
	dofile(farming.path .. "/hoes.lua")
end

dofile(farming.path.."/grass.lua")

-- disable crops Mineclone already has

if farming.mcl then
	farming.carrot = nil
	farming.potato = nil
	farming.melon = nil
	farming.cocoa = nil
	farming.beetroot = nil
	farming.sunflower = nil
	farming.pumpkin = nil
else
	dofile(farming.path.."/crops/wheat.lua") -- default crop outwith mineclone
end

dofile(farming.path.."/crops/cotton.lua") -- default crop

-- helper function

local function ddoo(file, check)

	if check then dofile(farming.path .. "/crops/" .. file) end
end

-- add additional crops and food (if enabled)
ddoo("carrot.lua", farming.carrot)
ddoo("potato.lua", farming.potato)
ddoo("tomato.lua", farming.tomato)
ddoo("cucumber.lua", farming.cucumber)
ddoo("corn.lua", farming.corn)
ddoo("coffee.lua", farming.coffee)
ddoo("melon.lua", farming.melon)
ddoo("pumpkin.lua", farming.pumpkin)
ddoo("cocoa.lua", farming.cocoa)
ddoo("raspberry.lua", farming.raspberry)
ddoo("blueberry.lua", farming.blueberry)
ddoo("rhubarb.lua", farming.rhubarb)
ddoo("beans.lua", farming.beans)
ddoo("grapes.lua", farming.grapes)
ddoo("barley.lua", farming.barley)
ddoo("hemp.lua", farming.hemp)
ddoo("garlic.lua", farming.garlic)
ddoo("onion.lua", farming.onion)
ddoo("pepper.lua", farming.pepper)
ddoo("pineapple.lua", farming.pineapple)
ddoo("peas.lua", farming.peas)
ddoo("beetroot.lua", farming.beetroot)
ddoo("chili.lua", farming.chili)
ddoo("rye_oat.lua", farming.grains)
ddoo("rice.lua", farming.rice)
ddoo("mint.lua", farming.mint)
ddoo("cabbage.lua", farming.cabbage)
ddoo("blackberry.lua", farming.blackberry)
ddoo("soy.lua", farming.soy)
ddoo("vanilla.lua", farming.vanilla)
ddoo("lettuce.lua", farming.lettuce)
ddoo("artichoke.lua", farming.artichoke)
ddoo("parsley.lua", farming.parsley)
ddoo("sunflower.lua", farming.sunflower)
ddoo("strawberry.lua", farming.strawberry)
ddoo("asparagus.lua", farming.asparagus)
ddoo("eggplant.lua", farming.eggplant)
ddoo("spinach.lua", farming.eggplant)
ddoo("ginger.lua", farming.ginger)

-- register food items, non-food items, recipes and stairs

dofile(farming.path .. "/item_non_food.lua")
dofile(farming.path .. "/item_food.lua")
dofile(farming.path .. "/item_recipes.lua")
dofile(farming.path .. "/item_stairs.lua")

if not farming.mcl then
	dofile(farming.path .. "/compatibility.lua") -- Farming Plus compatibility
end

if minetest.get_modpath("lucky_block") then
	dofile(farming.path .. "/lucky_block.lua")
end

print("[MOD] Farming Redo loaded")
