-- Nodes
minetest.register_node("mcl_end:end_stone", {
	description = "End Stone",
	_doc_items_longdesc = doc.sub.items.temp.build,
	tiles = {"mcl_end_end_stone.png"},
	stack_max = 64,
	groups = {pickaxey=1, building_block=1, material_stone=1},
	sounds = mcl_sounds.node_sound_stone_defaults(),
	_mcl_blast_resistance = 45,
	_mcl_hardness = 3,
})

minetest.register_node("mcl_end:end_bricks", {
	description = "End Stone Bricks",
	_doc_items_longdesc = doc.sub.items.temp.build,
	tiles = {"mcl_end_end_bricks.png"},
	is_ground_content = false,
	stack_max = 64,
	groups = {pickaxey=1, building_block=1, material_stone=1},
	sounds = mcl_sounds.node_sound_stone_defaults(),
	_mcl_blast_resistance = 4,
	_mcl_hardness = 0.8,
})

minetest.register_node("mcl_end:purpur_block", {
	description = "Purpur Block",
	_doc_items_longdesc = doc.sub.items.temp.build,
	tiles = {"mcl_end_purpur_block.png"},
	is_ground_content = false,
	stack_max = 64,
	groups = {pickaxey=1, building_block=1, material_stone=1},
	sounds = mcl_sounds.node_sound_stone_defaults(),
	_mcl_blast_resistance = 30,
	_mcl_hardness = 1.5,
})

minetest.register_node("mcl_end:purpur_pillar", {
	description = "Purpur Pillar",
	_doc_items_longdesc = doc.sub.items.temp.build,
	stack_max = 64,
	paramtype2 = "facedir",
	is_ground_content = false,
	on_place = mcl_util.rotate_axis,
	tiles = {"mcl_end_purpur_pillar_top.png", "mcl_end_purpur_pillar_top.png", "mcl_end_purpur_pillar.png"},
	groups = {pickaxey=1, building_block=1, material_stone=1},
	sounds = mcl_sounds.node_sound_stone_defaults(),
	_mcl_blast_resistance = 30,
	_mcl_hardness = 1.5,
})

minetest.register_node("mcl_end:end_rod", {
	description = "End Rod",
	_doc_items_longdesc = "End rods are decorational light sources.",
	tiles = {
		"mcl_end_end_rod_top.png",
		"mcl_end_end_rod_bottom.png",
		"mcl_end_end_rod_side.png",
		"mcl_end_end_rod_side.png",
		"mcl_end_end_rod_side.png",
		"mcl_end_end_rod_side.png",
	},
	drawtype = "nodebox",
	is_ground_content = false,
	paramtype = "light",
	paramtype2 = "facedir",
	light_source = 14,
	sunlight_propagates = true,
	groups = { dig_immediate=3, deco_block=1, destroy_by_lava_flow=1, },
	node_box = {
		type = "fixed",
		fixed = {
			{-0.125, -0.5, -0.125, 0.125, -0.4375, 0.125}, -- Base
			{-0.0625, -0.4375, -0.0625, 0.0625, 0.5, 0.0625}, -- Rod
		},
	},
	selection_box = {
		type = "fixed",
		fixed = {
			{-0.125, -0.5, -0.125, 0.125, 0.5, 0.125}, -- Base
		},
	},
	collision_box = {
		type = "fixed",
		fixed = {
			{-0.125, -0.5, -0.125, 0.125, 0.5, 0.125}, -- Base
		},
	},
	on_place = function(itemstack, placer, pointed_thing)
		if pointed_thing.type ~= "node" then
			return itemstack
		end

		local p0 = pointed_thing.under
		local p1 = pointed_thing.above
		local param2 = 0

		local placer_pos = placer:getpos()
		if placer_pos then
			local dir = {
				x = p1.x - placer_pos.x,
				y = p1.y - placer_pos.y,
				z = p1.z - placer_pos.z
			}
			param2 = minetest.dir_to_facedir(dir)
		end

		if p0.y - 1 == p1.y then
			param2 = 20
		elseif p0.x - 1 == p1.x then
			param2 = 16
		elseif p0.x + 1 == p1.x then
			param2 = 12
		elseif p0.z - 1 == p1.z then
			param2 = 8
		elseif p0.z + 1 == p1.z then
			param2 = 4
		end

		return minetest.item_place(itemstack, placer, pointed_thing, param2)
	end,

	sounds = mcl_sounds.node_sound_glass_defaults(),
	_mcl_blast_resistance = 0,
})

minetest.register_node("mcl_end:dragon_egg", {
	description = "Dragon Egg",
	_doc_items_longdesc = "A dragon egg is a decorational item which can be placed.",
	tiles = {
		"mcl_end_dragon_egg.png",
		"mcl_end_dragon_egg.png",
		"mcl_end_dragon_egg.png",
		"mcl_end_dragon_egg.png",
		"mcl_end_dragon_egg.png",
		"mcl_end_dragon_egg.png",
	},
	drawtype = "nodebox",
	is_ground_content = false,
	paramtype = "light",
	light_source = 1,
	node_box = {
		type = "fixed",
		fixed = {
			{-0.375, -0.5, -0.375, 0.375, -0.4375, 0.375},
			{-0.5, -0.4375, -0.5, 0.5, -0.1875, 0.5},
			{-0.4375, -0.1875, -0.4375, 0.4375, 0, 0.4375},
			{-0.375, 0, -0.375, 0.375, 0.125, 0.375},
			{-0.3125, 0.125, -0.3125, 0.3125, 0.25, 0.3125},
			{-0.25, 0.25, -0.25, 0.25, 0.3125, 0.25},
			{-0.1875, 0.3125, -0.1875, 0.1875, 0.375, 0.1875},
			{-0.125, 0.375, -0.125, 0.125, 0.4375, 0.125},
			{-0.0625, 0.4375, -0.0625, 0.0625, 0.5, 0.0625},
		}
	},
	selection_box = {
		type = "regular",
	},
	groups = {handy=1, falling_node = 1, deco_block = 1, not_in_creative_inventory = 1, dig_by_piston = 1 },
	sounds = mcl_sounds.node_sound_stone_defaults(),
	_mcl_blast_resistance = 45,
	_mcl_hardness = 3,
	-- TODO: Make dragon egg teleport on punching
})

-- Eye of ender
minetest.register_entity("mcl_end:ender_eye", {
	physical = false,
	textures = {"mcl_end_ender_eye.png"},
	visual_size = {x=1.5, y=1.5},
	collisionbox = {0,0,0,0,0,0},

	-- Save and restore age
	get_staticdata = function(self)
		return tostring(self._age)
	end,
	on_activate = function(self, staticdata, dtime_s)
		local age = tonumber(staticdata)
		if type(age) == "number" then
			self._age = age
			if self._age >= 2 then
				self._phase = 1
			else
				self._phase = 0
			end
		end
	end,

	on_step = function(self, dtime)
		self._age = self._age + dtime
		if self._age >= 3 then
			-- End of life
			local r = math.random(1,5)
			if r == 1 or minetest.settings:get_bool("creative_mode") then
				-- 20% chance to get destroyed completely.
				-- 100% if in Creative Mode
				self.object:remove()
				return
			else
				-- 80% to drop as an item
				local pos = self.object:get_pos()
				local v = self.object:getvelocity()
				self.object:remove()
				local item = minetest.add_item(pos, "mcl_end:ender_eye")
				item:setvelocity(v)
				return
			end
		elseif self._age >= 2 then
			if self._phase == 0 then
				self._phase = 1
				-- Stop the eye and wait for another second.
				-- The vertical speed changes are just eye candy.
				self.object:setacceleration({x=0, y=-3, z=0})
				self.object:setvelocity({x=0, y=self.object:getvelocity().y*0.2, z=0})
			end
		else
			-- Fly normally and generate particles
			local pos = self.object:get_pos()
			pos.x = pos.x + math.random(-1, 1)*0.5
			pos.y = pos.y + math.random(-1, 0)*0.5
			pos.z = pos.z + math.random(-1, 1)*0.5
			minetest.add_particle({
				pos = pos,
				texture = "mcl_particles_teleport.png",
				expirationtime = 1,
				velocity = {x=math.random(-1, 1)*0.1, y=math.random(-30, 0)*0.1, z=math.random(-1, 1)*0.1},
				acceleration = {x=0, y=0, z=0},
				size = 2.5,
			})
		end
	end,

	_age = 0, -- age in seconds
	_phase = 0, -- phase 0: flying. phase 1: idling in mid air, about to drop or shatter
})

minetest.register_craftitem("mcl_end:ender_eye", {
	description = "Eye of Ender",
	_doc_items_longdesc = "This item is used to locate End portal shrines in the Overworld and to activate End portals." .. "\n" .. "NOTE: The End dimension is currently incomplete and boring.",
	_doc_items_usagehelp = "Use the attack key to release the eye of ender. It will rise and fly in the horizontal direction of the closest end portal shrine. If you're very close, the eye of ender will take the direct path to the End portal shrine instead. After a few seconds, it stops. It may drop as an item, but there's a 20% chance it shatters." .. "\n" .. "To activate an End portal, eyes of ender need to be placed into each block of an intact End portal frame.",
	wield_image = "mcl_end_ender_eye.png",
	inventory_image = "mcl_end_ender_eye.png",
	stack_max = 64,
	-- Throw eye of ender to make it fly to the closest stronghold
	on_use = function(itemstack, user, pointed_thing)
		if user == nil then
			return
		end
		local origin = user:get_pos()
		origin.y = origin.y + 1.5
		local strongholds = mcl_structures.get_registered_structures("stronghold")
		local dim = mcl_worlds.pos_to_dimension(origin)
		local is_creative = minetest.settings:get_bool("creative_mode")

		-- Just drop the eye of ender if there are no strongholds
		if #strongholds <= 0 or dim ~= "overworld" then
			if not is_creative then
				minetest.item_drop(ItemStack("mcl_end:ender_eye"), user, user:get_pos())
				itemstack:take_item()
			end
			return itemstack
		end

		-- Find closest stronghold.
		-- Note: Only the horizontal axes are taken into account.
		local closest_stronghold
		local lowest_dist
		for s=1, #strongholds do
			local h_pos = table.copy(strongholds[s].pos)
			local h_origin = table.copy(origin)
			h_pos.y = 0
			h_origin.y = 0
			local dist = vector.distance(h_origin, h_pos)
			if not closest_stronghold then
				closest_stronghold = strongholds[s]
				lowest_dist = dist
			else
				if dist < lowest_dist then
					closest_stronghold = strongholds[s]
					lowest_dist = dist
				end
			end
		end

		-- Throw it!
		local obj = minetest.add_entity(origin, "mcl_end:ender_eye")
		local dir

		if lowest_dist <= 25 then
			local velocity = 4
			-- Stronghold is close: Fly directly to stronghold and take Y into account.
			dir = vector.normalize(vector.direction(origin, closest_stronghold.pos))
			obj:setvelocity({x=dir.x*velocity, y=dir.y*velocity, z=dir.z*velocity})
		else
			local velocity = 12
			-- Don't care about Y if stronghold is still far away.
			-- Fly to direction of X/Z, and always upwards so it can be seen easily.
			local o = {x=origin.x, y=0, z=origin.z}
			local s = {x=closest_stronghold.pos.x, y=0, z=closest_stronghold.pos.z}
			dir = vector.normalize(vector.direction(o, s))
			obj:setacceleration({x=dir.x*-3, y=4, z=dir.z*-3})
			obj:setvelocity({x=dir.x*velocity, y=3, z=dir.z*velocity})
		end


		if not is_creative then
			itemstack:take_item()
		end
		return itemstack
	end,
})

local chorus_flower_box = {
	type = "fixed",
	fixed = {
		{-0.5, -0.375, -0.375, 0.5, 0.375, 0.375},
		{-0.375, -0.375, 0.375, 0.375, 0.375, 0.5},
		{-0.375, -0.375, -0.5, 0.375, 0.375, -0.375},
		{-0.375, 0.375, -0.375, 0.375, 0.5, 0.375},
		{-0.375, -0.5, -0.375, 0.375, -0.375, 0.375},
	}
}

minetest.register_node("mcl_end:chorus_flower", {
	description = "Chorus Flower",
	tiles = {
		"mcl_end_chorus_flower.png",
		"mcl_end_chorus_flower.png",
		"mcl_end_chorus_flower.png",
		"mcl_end_chorus_flower.png",
		"mcl_end_chorus_flower.png",
		"mcl_end_chorus_flower.png",
	},
	drawtype = "nodebox",
	paramtype = "light",
	sunlight_propagates = true,
	node_box = chorus_flower_box,
	selection_box = { type = "regular" },
	sounds = mcl_sounds.node_sound_wood_defaults(),
	groups = {handy=1,axey=1, deco_block = 1, dig_by_piston = 1, destroy_by_lava_flow = 1,},

	node_placement_prediction = "",
	on_place = function(itemstack, placer, pointed_thing)
		local node_under = minetest.get_node(pointed_thing.under)
		local node_above = minetest.get_node(pointed_thing.above)
		if placer and not placer:get_player_control().sneak then
			-- Use pointed node's on_rightclick function first, if present
			if minetest.registered_nodes[node_under.name] and minetest.registered_nodes[node_under.name].on_rightclick then
				return minetest.registered_nodes[node_under.name].on_rightclick(pointed_thing.under, node_under, placer, itemstack) or itemstack
			end
		end

		--[[ Part 1: Check placement rules. Placement is legal is one of the following
		conditions is met:
		1) On top of end stone or chorus plant
		2) On top of air and horizontally adjacent to exactly 1 chorus plant ]]
		local pos
		if minetest.registered_nodes[node_under.name].buildable_to then
			pos = pointed_thing.under
		else
			pos = pointed_thing.above
		end


		local below = {x=pos.x, y=pos.y-1, z=pos.z}
		local node_below = minetest.get_node(below)
		local plant_ok = false
		-- Condition 1
		if node_below.name == "mcl_end:chorus_plant" or node_below.name == "mcl_end:end_stone" then
			plant_ok = true
		-- Condition 2
		elseif node_below.name == "air" then
			local around = {
				{ x= 1, y=0, z= 0 },
				{ x=-1, y=0, z= 0 },
				{ x= 0, y=0, z= 1 },
				{ x= 0, y=0, z=-1 },
			}
			local around_count = 0
			for a=1, #around do
				local pos_side = vector.add(pos, around[a])
				local node_side = minetest.get_node(pos_side)
				if node_side.name == "mcl_end:chorus_plant" then
					around_count = around_count + 1
					if around_count > 1 then
						break
					end
				end
			end
			if around_count == 1 then
				plant_ok = true
			end
		end
		if plant_ok then
			-- Placement OK! Proceed normally
			return minetest.item_place(itemstack, placer, pointed_thing)
		else
			return itemstack
		end
	end,
	_mcl_blast_resistance = 2,
	_mcl_hardness = 0.4,
})

minetest.register_abm({
	label = "Chorus plant growth",
	nodenames = { "mcl_end:chorus_flower" },
	interval = 35.0,
	chance = 4.0,
	action = function(pos, node, active_object_count, active_object_count_wider)
		local above = { x = pos.x, y = pos.y + 1, z = pos.z }
		local node_above = minetest.get_node(above)
		local around = {
			{ x=-1, y=0, z= 0 },
			{ x= 1, y=0, z= 0 },
			{ x= 0, y=0, z=-1 },
			{ x= 0, y=0, z= 1 },
		}
		local air_around = true
		for a=1, #around do
			if minetest.get_node(vector.add(above, around[a])).name ~= "air" then
				air_around = false
				break
			end
		end
		if node_above.name == "air" and air_around then
			local branching = false
			local h = 0
			for y=1, 4 do
				local checkpos = {x=pos.x, y=pos.y-y, z=pos.z}
				local node = minetest.get_node(checkpos)
				if node.name == "mcl_end:chorus_plant" then
					h = y
					if not branching then
						for a=1, #around do
							local node_side = minetest.get_node(vector.add(checkpos, around[a]))
							if node_side.name == "mcl_end:chorus_plant" then
								branching = true
							end
						end
					end
				else
					break
				end
			end

			local grow_chance
			if h <= 1 then
				grow_chance = 100
			elseif h == 2 and branching == false then
				grow_chance = 60
			elseif h == 2 and branching == true then
				grow_chance = 50
			elseif h == 3 and branching == false then
				grow_chance = 40
			elseif h == 3 and branching == true then
				grow_chance = 25
			elseif h == 4 and branching == false then
				grow_chance = 20
			end

			local grown = false
			if grow_chance then
				local new_flowers = {}
				local r = math.random(1, 100)
				local age = node.param2
				if r <= grow_chance then
					table.insert(new_flowers, above)
				else
					age = age + 1
					local branches
					if branching == false then
						branches = math.random(1, 4)
					elseif branching == true then
						branches = math.random(0, 3)
					end
					local branch_grown = false
					for b=1, branches do
						local next_branch = math.random(1, #around)
						local branch = vector.add(pos, around[next_branch])
						local below_branch = vector.add(branch, {x=0,y=-1,z=0})
						if minetest.get_node(below_branch).name == "air" then
							table.insert(new_flowers, branch)
						end
					end
				end

				for _, f in ipairs(new_flowers) do
					if age >= 5 then
						minetest.set_node(f, {name="mcl_end:chorus_flower_dead"})
						grown = true
					else
						minetest.set_node(f, {name="mcl_end:chorus_flower", param2 = age})
						grown = true
					end
				end
				if #new_flowers >= 1 then
					minetest.set_node(pos, {name="mcl_end:chorus_plant"})
					grown = true
				end
			end
			if not grown then
				minetest.set_node(pos, {name = "mcl_end:chorus_flower_dead"})
			end
		end
	end,
})

minetest.register_node("mcl_end:chorus_flower_dead", {
	description = "Dead Chorus Flower",
	tiles = {
		"mcl_end_chorus_flower_dead.png",
		"mcl_end_chorus_flower_dead.png",
		"mcl_end_chorus_flower_dead.png",
		"mcl_end_chorus_flower_dead.png",
		"mcl_end_chorus_flower_dead.png",
		"mcl_end_chorus_flower_dead.png",
	},
	drawtype = "nodebox",
	paramtype = "light",
	sunlight_propagates = true,
	node_box = chorus_flower_box,
	selection_box = { type = "regular" },
	sounds = mcl_sounds.node_sound_wood_defaults(),
	drop = "mcl_end:chorus_flower",
	groups = {handy=1,axey=1, deco_block = 1, dig_by_piston = 1, destroy_by_lava_flow = 1,},
	_mcl_blast_resistance = 2,
	_mcl_hardness = 0.4,
})

minetest.register_node("mcl_end:chorus_plant", {
	description = "Chorus Plant",
	tiles = {
		"mcl_end_chorus_plant.png",
		"mcl_end_chorus_plant.png",
		"mcl_end_chorus_plant.png",
		"mcl_end_chorus_plant.png",
		"mcl_end_chorus_plant.png",
		"mcl_end_chorus_plant.png",
	},
	drawtype = "nodebox",
	paramtype = "light",
	sunlight_propagates = true,
	-- TODO: Maybe improve nodebox a bit to look more “natural”
	node_box = {
		type = "connected",
		fixed = { -0.25, -0.25, -0.25, 0.25, 0.25, 0.25 }, -- Core
		connect_top = { -0.1875, 0.25, -0.1875, 0.1875, 0.5, 0.1875 },
		connect_left = { -0.5, -0.1875, -0.1875, -0.25, 0.1875, 0.1875 },
		connect_right = { 0.25, -0.1875, -0.1875, 0.5, 0.1875, 0.1875 },
		connect_bottom = { -0.1875, -0.5, -0.25, 0.1875, -0.25, 0.25 },
		connect_front = { -0.1875, -0.1875, -0.5, 0.1875, 0.1875, -0.25 },
		connect_back = { -0.1875, -0.1875, 0.25, 0.1875, 0.1875, 0.5 },
	},
	connect_sides = { "top", "bottom", "front", "back", "left", "right" },
	connects_to = {"mcl_end:chorus_plant", "mcl_end:chorus_flower", "mcl_end:chorus_flower_dead", "mcl_end:end_stone"},
	sounds = mcl_sounds.node_sound_wood_defaults(),
	drop = {
		items = {
			{ items = { "mcl_end:chorus_fruit"}, rarity = 2 },
		}
	},
	groups = {handy=1,axey=1, not_in_creative_inventory = 1, dig_by_piston = 1, destroy_by_lava_flow = 1 },
	_mcl_blast_resistance = 2,
	_mcl_hardness = 0.4,
})

-- Craftitems
minetest.register_craftitem("mcl_end:chorus_fruit", {
	description = "Chorus Fruit",
	_doc_items_longdesc = "Chorus fruits are the fruits of the chorus plant which is home to the End. They can be eaten to restore a few hunger points.",
	wield_image = "mcl_end_chorus_fruit.png",
	inventory_image = "mcl_end_chorus_fruit.png",
	-- TODO: Teleport player
	on_place = minetest.item_eat(4),
	on_secondary_use = minetest.item_eat(4),
	groups = { food = 2, eatable = 4, can_eat_when_full = 1 },
	_mcl_saturation = 2.4,
	stack_max = 64,
})

minetest.register_craftitem("mcl_end:chorus_fruit_popped", {
	description = "Popped Chorus Fruit",
	_doc_items_longdesc = doc.sub.items.temp.craftitem,
	wield_image = "mcl_end_chorus_fruit_popped.png",
	inventory_image = "mcl_end_chorus_fruit_popped.png",
	groups = { craftitem = 1 },
	stack_max = 64,
})

-- Crafting recipes
minetest.register_craft({
	output = "mcl_end:end_bricks 4",
	recipe = {
		{"mcl_end:end_stone", "mcl_end:end_stone"},
		{"mcl_end:end_stone", "mcl_end:end_stone"},
	}
})

minetest.register_craft({
	output = "mcl_end:purpur_block 4",
	recipe = {
		{"mcl_end:chorus_fruit_popped", "mcl_end:chorus_fruit_popped",},
		{"mcl_end:chorus_fruit_popped", "mcl_end:chorus_fruit_popped",},
	}
})

minetest.register_craft({
	output = "mcl_end:end_rod 4",
	recipe = {
		{"mcl_mobitems:blaze_rod"},
		{"mcl_end:chorus_fruit_popped"},
	},
})

minetest.register_craft({
	type = "shapeless",
	output = "mcl_end:ender_eye",
	recipe = {"mcl_mobitems:blaze_powder", "mcl_throwing:ender_pearl"},
})

minetest.register_craft({
	type = "cooking",
	output = "mcl_end:chorus_fruit_popped",
	recipe = "mcl_end:chorus_fruit",
	cooktime = 10,
})