mcl_villages = {}
mcl_villages.modpath = minetest.get_modpath(minetest.get_current_modname())

local village_chance = tonumber(minetest.settings:get("mcl_villages_village_probability")) or 1

dofile(mcl_villages.modpath.."/const.lua")
dofile(mcl_villages.modpath.."/utils.lua")
dofile(mcl_villages.modpath.."/buildings.lua")
dofile(mcl_villages.modpath.."/paths.lua")
dofile(mcl_villages.modpath.."/api.lua")

local S = minetest.get_translator(minetest.get_current_modname())

minetest.register_alias("mcl_villages:stonebrickcarved", "mcl_core:stonebrickcarved")
minetest.register_node("mcl_villages:structblock", {drawtype="airlike",groups = {not_in_creative_inventory=1},})
-- we currently do not support/use these from MCLA:
--minetest.register_alias("mcl_villages:village_block", "air")
--minetest.register_alias("mcl_villages:building_block", "air")
--
-- on map generation, try to build a settlement
--
local function build_a_settlement(minp, maxp, blockseed)
	if mcl_villages.village_exists(blockseed) then return end
	local pr = PcgRandom(blockseed)
	local lvm = VoxelManip(minp, maxp)
	local settlement = mcl_villages.create_site_plan(lvm, minp, maxp, pr)
	if not settlement then return false, false end
	-- all foundations first, then all buildings, to avoid damaging very close buildings
	mcl_villages.terraform(lvm, settlement, pr)
	mcl_villages.place_schematics(lvm, settlement, blockseed, pr)
	mcl_villages.add_village(blockseed, settlement)
	--lvm:write_to_map(true) -- destory paths as of now
	--mcl_villages.paths(blockseed) -- TODO: biome
	for _, on_village_placed_callback in pairs(mcl_villages.on_village_placed) do
		on_village_placed_callback(settlement, blockseed)
	end
end

local function ecb_village(blockpos, action, calls_remaining, param)
	if calls_remaining >= 1 then return end
	local minp, maxp, blockseed = param.minp, param.maxp, param.blockseed
	build_a_settlement(minp, maxp, blockseed)
end

-- Disable natural generation in singlenode.
local mg_name = minetest.get_mapgen_setting("mg_name")
if mg_name ~= "singlenode" then
	mcl_mapgen_core.register_generator("villages", nil, function(minp, maxp, blockseed)
		if maxp.y < 0 then return end
		if village_chance == 0 then return end
		local pr = PcgRandom(blockseed)
		if pr:next(0, 100) > village_chance then return end
		local big_minp = vector.copy(minp) --vector.offset(minp, -16, -16, -16)
		local big_maxp = vector.copy(maxp) --vector.offset(maxp, 16, 16, 16)
		minetest.emerge_area(big_minp, big_maxp, ecb_village,
			{ minp = vector.copy(minp), maxp = vector.copy(maxp), blockseed = blockseed }
		)
	end)
	--[[ did not work, because later structure generation would make holes in our schematics
	mcl_mapgen_core.register_generator("villages", function(lvm, data, data2, e1, e2, area, minp, maxp, blockseed)
		if mcl_villages.village_exists(blockseed) then return false, false end

		lvm:set_data(data) -- FIXME: ugly hack, better directly manipulate the data array
		lvm:set_param2_data(data2)
		local pr = PcgRandom(blockseed)
		if pr:next(0, 100) > village_chance then return end
		local settlement = mcl_villages.create_site_plan(lvm, minp, maxp, pr)
		if not settlement then return false, false end

		-- all foundations first, then all buildings, to avoid damaging very close buildings
		mcl_villages.terraform(lvm, settlement, pr)
		mcl_villages.place_schematics(lvm, settlement, pr)
		-- TODO: replace with MCLA code: mcl_villages.paths(settlement)
		mcl_villages.add_village(blockseed, settlement)
		lvm:get_data(data) -- FIXME: ugly hack, better directly manipulate the data array
		lvm:get_param2_data(data2)
		return true, true
	end, function(minp, maxp, blockseed)
		for _, on_village_placed_callback in pairs(mcl_villages.on_village_placed) do
			on_village_placed_callback(settlement, blockseed)
		end
	end, 15000)
	]]--
	--[[ causes issues when vertically close to the chunk boundary:
	mcl_mapgen_core.register_generator("villages", nil, function(minp, maxp, blockseed)
		if maxp.y < 0 or mcl_villages.village_exists(blockseed) then return end
		local pr = PcgRandom(blockseed)
		if pr:next(0, 100) > village_chance then return end
		--local lvm, emin, emax = minetest.get_mapgen_object("voxelmanip") -- did not get the lighting fixed?
		local lvm = VoxelManip()
		lvm:read_from_map(minp, maxp)
		local settlement = mcl_villages.create_site_plan(lvm, minp, maxp, pr)
		if not settlement then return false, false end
		-- all foundations first, then all buildings, to avoid damaging very close buildings
		mcl_villages.terraform(lvm, settlement, pr)
		mcl_villages.place_schematics(lvm, settlement, blockseed, pr)
		mcl_villages.add_village(blockseed, settlement)
		--lvm:write_to_map(true)
		--mcl_villages.paths(blockseed) -- TODO: biome
	end, 15000)
	]]--
end

-- This is a light source so that lamps don't get placed near it
minetest.register_node("mcl_villages:village_block", {
	drawtype = "airlike",
	groups = { not_in_creative_inventory = 1 },
	light_source = 14,

	-- Somethings don't work reliably when done in the map building
	-- so we use a timer to run them later when they work more reliably
	-- e.g. spawning mobs, running minetest.find_path
	on_timer = function(pos, elapsed)
		local meta = minetest.get_meta(pos)
		local blockseed = meta:get_string("blockseed")
		local node_type = meta:get_string("node_type")
		minetest.set_node(pos, { name = node_type })
		mcl_villages.post_process_village(blockseed)
		return false
	end,
})

-- struct to cause a village spawn when it can be fully emerged
minetest.register_lbm({
	name = "mcl_villages:structblock",
	run_at_every_load = true,
	nodenames = {"mcl_villages:structblock"},
	action = function(pos, node)
		minetest.set_node(pos, {name = "air"})
		local minp=vector.offset(pos, -40, -40, -40)
		local maxp=vector.offset(pos, 40, 40, 40)
		local blockseed = PcgRandom(minetest.hash_node_position(pos)):next()
		minetest.emerge_area(minp, maxp, ecb_village, {minp=minp, maxp=maxp, blockseed=blockseed})
	end
})

-- manually place villages
if minetest.is_creative_enabled("") then
	minetest.register_craftitem("mcl_villages:tool", {
		description = S("mcl_villages build tool"),
		inventory_image = "default_tool_woodshovel.png",
		-- build settlement
		on_place = function(itemstack, placer, pointed_thing)
			if not pointed_thing.under then return end
			if not minetest.check_player_privs(placer, "server") then
				minetest.chat_send_player(placer:get_player_name(), S("Placement denied. You need the “server” privilege to place villages."))
				return
			end
			local minp = vector.subtract(pointed_thing.under, mcl_villages.half_map_chunk_size)
			local maxp = vector.add(pointed_thing.under, mcl_villages.half_map_chunk_size)
			build_a_settlement(minp, maxp, math.random(0,32767))
		end
	})
	mcl_wip.register_experimental_item("mcl_villages:tool")
end

-- This makes the temporary node invisble unless in creative mode
local drawtype = "airlike"
if minetest.is_creative_enabled("") then
	drawtype = "glasslike"
end

minetest.register_node("mcl_villages:no_paths", {
	description = S(
		"Prevent paths from being placed during villager generation. Replaced by air after village path generation"
	),
	paramtype = "light",
	drawtype = drawtype,
	inventory_image = "mcl_core_barrier.png",
	wield_image = "mcl_core_barrier.png",
	tiles = { "mcl_core_barrier.png" },
	is_ground_content = false,
	groups = { creative_breakable = 1, not_solid = 1, not_in_creative_inventory = 1 },
})

minetest.register_node("mcl_villages:path_endpoint", {
	description = S("Mark the node as a good place for paths to connect to"),
	is_ground_content = false,
	tiles = { "wool_white.png" },
	wield_image = "wool_white.png",
	wield_scale = { x = 1, y = 1, z = 0.5 },
	groups = { handy = 1, supported_node = 1, not_in_creative_inventory = 1 },
	sounds = mcl_sounds.node_sound_wool_defaults(),
	paramtype = "light",
	sunlight_propagates = true,
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{ -8 / 16, -8 / 16, -8 / 16, 8 / 16, -7 / 16, 8 / 16 },
		},
	},
	_mcl_hardness = 0.1,
	_mcl_blast_resistance = 0.1,
})

local schem_path = mcl_villages.modpath .. "/schematics/"

mcl_villages.register_bell({ name = "belltower", mts = schem_path .. "new_villages/belltower.mts", yadjust = 1 })

mcl_villages.register_well({
	name = "well",
	mts = schem_path .. "new_villages/well.mts",
	yadjust = -1,
})

for i = 1, 6 do
	mcl_villages.register_lamp({
		name = "lamp",
		mts = schem_path .. "new_villages/lamp_" .. i .. ".mts",
		yadjust = 1,
		no_ground_turnip = true,
		no_clearance = true,
	})
end

mcl_villages.register_building({
	name = "house_big",
	mts = schem_path .. "new_villages/house_4_bed.mts",
	min_jobs = 6,
	max_jobs = 99,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "house_large",
	mts = schem_path .. "new_villages/house_3_bed.mts",
	min_jobs = 4,
	max_jobs = 99,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "house_medium",
	mts = schem_path .. "new_villages/house_2_bed.mts",
	min_jobs = 2,
	max_jobs = 99,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "house_chimney",
	mts = schem_path .. "haeuschen2.mts",
	min_jobs = 2,
	max_jobs = 99,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "house_small",
	mts = schem_path .. "new_villages/house_1_bed.mts",
	min_jobs = 1,
	max_jobs = 99,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "blacksmith",
	mts = schem_path .. "new_villages/blacksmith.mts",
	num_others = 8,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "butcher",
	mts = schem_path .. "new_villages/butcher.mts",
	num_others = 8,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "farm",
	mts = schem_path .. "new_villages/farm.mts",
	num_others = 3,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "fish_farm",
	mts = schem_path .. "new_villages/fishery.mts",
	num_others = 8,
	yadjust = -2,
})

mcl_villages.register_building({
	name = "fletcher",
	mts = schem_path .. "bogner.mts",
	num_others = 8,
	yadjust = 0,
})

mcl_villages.register_building({
	name = "library",
	mts = schem_path .. "new_villages/library.mts",
	min_jobs = 12,
	max_jobs = 99,
	num_others = 15,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "librarian",
	mts = schem_path .. "schreiber.mts",
	min_jobs = 1,
	max_jobs = 11,
	yadjust = 0,
})

mcl_villages.register_building({
	name = "map_shop",
	mts = schem_path .. "new_villages/cartographer.mts",
	num_others = 15,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "mason",
	mts = schem_path .. "new_villages/mason.mts",
	num_others = 8,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "mill",
	mts = schem_path .. "new_villages/mill.mts",
	num_others = 8,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "tannery",
	mts = schem_path .. "new_villages/leather_worker.mts",
	num_others = 8,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "tool_smith",
	mts = schem_path .. "new_villages/toolsmith.mts",
	num_others = 8,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "weapon_smith",
	mts = schem_path .. "new_villages/weaponsmith.mts",
	num_others = 8,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "chapel",
	mts = schem_path .. "new_villages/chapel.mts",
	num_others = 8,
	min_jobs = 1,
	max_jobs = 9,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "church",
	mts = schem_path .. "kirche.mts",
	num_others = 20,
	min_jobs = 10,
	max_jobs = 99,
	yadjust = 0,
})

mcl_villages.register_building({
	name = "farm_small",
	mts = schem_path .. "new_villages/farm_small_1.mts",
	num_others = 3,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "farm_small2",
	mts = schem_path .. "new_villages/farm_small_2.mts",
	num_others = 3,
	yadjust = 1,
})

mcl_villages.register_building({
	name = "farm_large",
	mts = schem_path .. "new_villages/farm_large_1.mts",
	num_others = 6,
	yadjust = 1,
})

for _, crop_type in pairs(mcl_villages.get_crop_types()) do
	for count = 1, 8 do
		local tile = crop_type .. "_" .. count .. ".png"
		minetest.register_node("mcl_villages:crop_" .. crop_type .. "_" .. count, {
			description = S("A place to plant @1 crops", crop_type),
			is_ground_content = false,
			tiles = { tile },
			wield_image = tile,
			wield_scale = { x = 1, y = 1, z = 0.5 },
			groups = { handy = 1, supported_node = 1, not_in_creative_inventory = 1 },
			paramtype = "light",
			sunlight_propagates = true,
			drawtype = "nodebox",
			node_box = {
				type = "fixed",
				fixed = {
					{ -8 / 16, -8 / 16, -8 / 16, 8 / 16, -7 / 16, 8 / 16 },
				},
			},
			_mcl_hardness = 0.1,
			_mcl_blast_resistance = 0.1,
		})
	end
end

mcl_villages.register_crop({
	type = "grain",
	node = "mcl_farming:wheat_1",
	biomes = {
		acacia = 10,
		bamboo = 10,
		desert = 10,
		jungle = 10,
		plains = 10,
		savanna = 10,
		spruce = 10,
	},
})

mcl_villages.register_crop({
	type = "root",
	node = "mcl_farming:carrot_1",
	biomes = {
		acacia = 10,
		bamboo = 6,
		desert = 10,
		jungle = 6,
		plains = 6,
		spruce = 10,
	},
})

mcl_villages.register_crop({
	type = "root",
	node = "mcl_farming:potato_1",
	biomes = {
		acacia = 6,
		bamboo = 10,
		desert = 6,
		jungle = 10,
		plains = 10,
		spruce = 6,
	},
})

mcl_villages.register_crop({
	type = "root",
	node = "mcl_farming:beetroot_0",
	biomes = {
		acacia = 3,
		bamboo = 3,
		desert = 3,
		jungle = 3,
		plains = 3,
		spruce = 3,
	},
})

mcl_villages.register_crop({
	type = "gourd",
	node = "mcl_farming:melontige_1",
	biomes = {
		bamboo = 10,
		jungle = 10,
	},
})

mcl_villages.register_crop({
	type = "gourd",
	node = "mcl_farming:pumpkin_1",
	biomes = {
		acacia = 10,
		bamboo = 5,
		desert = 10,
		jungle = 5,
		plains = 10,
		spruce = 10,
	},
})

for name, def in pairs(minetest.registered_nodes) do
	if def.groups["flower"] and not def.groups["double_plant"] and name ~= "mcl_flowers:wither_rose" then
		mcl_villages.register_crop({
			type = "flower",
			node = name,
			biomes = {
				acacia = 10,
				bamboo = 6,
				desert = 10,
				jungle = 6,
				plains = 6,
				spruce = 10,
			},
		})
	end
end