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

local math = math

mcl_jukebox = {}
mcl_jukebox.registered_records = {}

-- Player name-indexed table containing the currently heard track
local active_tracks = {}

-- Player name-indexed table containing the current used HUD ID for the “Now playing” message.
local active_huds = {}

-- Player name-indexed table for the “Now playing” message.
-- Used to make sure that minetest.after only applies to the latest HUD change event
local hud_sequence_numbers = {}

function mcl_jukebox.register_record(title, author, identifier, image, sound)
	mcl_jukebox.registered_records["mcl_jukebox:record_"..identifier] = {title, author, identifier, image, sound}
	local entryname = S("Music Disc")
	local longdesc = S("A music disc holds a single music track which can be used in a jukebox to play music.")
	local usagehelp = S("Place a music disc into an empty jukebox to play the music. Use the jukebox again to retrieve the music disc. The music can only be heard by you, not by other players.")
	minetest.register_craftitem(":mcl_jukebox:record_"..identifier, {
		description =
			C(mcl_colors.AQUA, S("Music Disc")) .. "\n" ..
			C(mcl_colors.GRAY, S("@1—@2", author, title)),
		_doc_items_create_entry = true,
		_doc_items_entry_name = entryname,
		_doc_items_longdesc = longdesc,
		_doc_items_usagehelp = usagehelp,
		--inventory_image = "mcl_jukebox_record_"..recorddata[r][3]..".png",
		inventory_image = image,
		stack_max = 1,
		groups = { music_record = 1 },
	})
end

local function now_playing(player, name)
	local playername = player:get_player_name()
	local hud = active_huds[playername]
	local text = S("Now playing: @1—@2", mcl_jukebox.registered_records[name][2], mcl_jukebox.registered_records[name][1])

	if not hud_sequence_numbers[playername] then
		hud_sequence_numbers[playername] = 1
	else
		hud_sequence_numbers[playername] = hud_sequence_numbers[playername] + 1
	end

	local id
	if hud then
		id = hud
		player:hud_change(id, "text", text)
	else
		id = player:hud_add({
			hud_elem_type = "text",
			position = { x=0.5, y=0.8 },
			offset = { x=0, y = 0 },
			number = 0x55FFFF,
			text = text,
			z_index = 100,
		})
		active_huds[playername] = id
	end
	minetest.after(5, function(tab)
		local playername = tab[1]
		local player = minetest.get_player_by_name(playername)
		local id = tab[2]
		local seq = tab[3]
		if not player or not player:is_player() or not active_huds[playername] or not hud_sequence_numbers[playername] or seq ~= hud_sequence_numbers[playername] then
			return
		end
		if id and id == active_huds[playername] then
			player:hud_remove(active_huds[playername])
			active_huds[playername] = nil
		end
	end, {playername, id, hud_sequence_numbers[playername]})
end

minetest.register_on_leaveplayer(function(player)
	active_tracks[player:get_player_name()] = nil
	active_huds[player:get_player_name()] = nil
	hud_sequence_numbers[player:get_player_name()] = nil
end)

-- Jukebox crafting
minetest.register_craft({
	output = "mcl_jukebox:jukebox",
	recipe = {
		{"group:wood", "group:wood", "group:wood"},
		{"group:wood", "mcl_core:diamond", "group:wood"},
		{"group:wood", "group:wood", "group:wood"},
	}
})

local function play_record(pos, itemstack, player)
	local item_name = itemstack:get_name()
	-- ensure the jukebox uses the new record names for old records
	local name = minetest.registered_aliases[item_name] or item_name
	if mcl_jukebox.registered_records[name] then
		local cname = player:get_player_name()
		if active_tracks[cname] then
			minetest.sound_stop(active_tracks[cname])
			active_tracks[cname] = nil
		end
		active_tracks[cname] = minetest.sound_play(mcl_jukebox.registered_records[name][5], {
			to_player = cname,
			gain = 1,
		})
		now_playing(player, name)
		return true
	end
	return false
end

-- Jukebox
minetest.register_node("mcl_jukebox:jukebox", {
	description = S("Jukebox"),
	_tt_help = S("Uses music discs to play music"),
	_doc_items_longdesc = S("Jukeboxes play music when they're supplied with a music disc."),
	_doc_items_usagehelp = S("Place a music disc into an empty jukebox to insert the music disc and play music. If the jukebox already has a music disc, you will retrieve this music disc first. The music can only be heard by you, not by other players."),
	tiles = {"mcl_jukebox_top.png", "mcl_jukebox_side.png", "mcl_jukebox_side.png"},
	sounds = mcl_sounds.node_sound_wood_defaults(),
	groups = {handy=1,axey=1, container=7, deco_block=1, material_wood=1, flammable=-1},
	is_ground_content = false,
	on_construct = function(pos)
		local meta = minetest.get_meta(pos)
		local inv = meta:get_inventory()
		inv:set_size("main", 1)
	end,
	on_rightclick= function(pos, node, clicker, itemstack, pointed_thing)
		if not clicker then return end
		local cname = clicker:get_player_name()
		if minetest.is_protected(pos, cname) then
			minetest.record_protection_violation(pos, cname)
			return
		end
		local meta = minetest.get_meta(pos)
		local inv = meta:get_inventory()
		if not inv:is_empty("main") then
			-- Jukebox contains a disc: Stop music and remove disc
			if active_tracks[cname] then
				minetest.sound_stop(active_tracks[cname])
			end
			local lx = pos.x
			local ly = pos.y+1
			local lz = pos.z
			local record = inv:get_stack("main", 1)
			local dropped_item = minetest.add_item({x=lx, y=ly, z=lz}, record)
			-- Rotate record to match with “slot” texture
			dropped_item:set_yaw(math.pi/2)
			inv:set_stack("main", 1, "")
			if active_tracks[cname] then
				minetest.sound_stop(active_tracks[cname])
				active_tracks[cname] = nil
			end
			if active_huds[cname] then
				clicker:hud_remove(active_huds[cname])
				active_huds[cname] = nil
			end
		else
			-- Jukebox is empty: Play track if player holds music record
			local playing = play_record(pos, itemstack, clicker)
			if playing then
				local put_itemstack = ItemStack(itemstack)
				put_itemstack:set_count(1)
				inv:set_stack("main", 1, put_itemstack)
				itemstack:take_item()
			end
		end
		return itemstack
	end,
	allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
		local name = player:get_player_name()
		if minetest.is_protected(pos, name) then
			minetest.record_protection_violation(pos, name)
			return 0
		else
			return count
		end
	end,
	allow_metadata_inventory_take = function(pos, listname, index, stack, player)
		local name = player:get_player_name()
		if minetest.is_protected(pos, name) then
			minetest.record_protection_violation(pos, name)
			return 0
		else
			return stack:get_count()
		end
	end,
	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
		local name = player:get_player_name()
		if minetest.is_protected(pos, name) then
			minetest.record_protection_violation(pos, name)
			return 0
		else
			return stack:get_count()
		end
	end,
	after_dig_node = function(pos, oldnode, oldmetadata, digger)
		local name = digger:get_player_name()
		local meta = minetest.get_meta(pos)
		local meta2 = meta
		meta:from_table(oldmetadata)
		local inv = meta:get_inventory()
		local stack = inv:get_stack("main", 1)
		if not stack:is_empty() then
			local p = {x=pos.x+math.random(0, 10)/10-0.5, y=pos.y, z=pos.z+math.random(0, 10)/10-0.5}
			local dropped_item = minetest.add_item(p, stack)
			-- Rotate record to match with “slot” texture
			dropped_item:set_yaw(math.pi/2)
			if active_tracks[name] then
				minetest.sound_stop(active_tracks[name])
				active_tracks[name] = nil
			end
			if active_huds[name] then
				digger:hud_remove(active_huds[name])
				active_huds[name] = nil
			end
		end
		meta:from_table(meta2:to_table())
	end,
	_mcl_blast_resistance = 6,
	_mcl_hardness = 2,
})

minetest.register_craft({
	type = "fuel",
	recipe = "mcl_jukebox:jukebox",
	burntime = 15,
})

mcl_jukebox.register_record("The Evil Sister (Jordach's Mix)", "SoundHelix", "13", "mcl_jukebox_record_13.png", "mcl_jukebox_track_1")
mcl_jukebox.register_record("The Energetic Rat (Jordach's Mix)", "SoundHelix", "wait", "mcl_jukebox_record_wait.png", "mcl_jukebox_track_2")
mcl_jukebox.register_record("Eastern Feeling", "Jordach", "blocks", "mcl_jukebox_record_blocks.png", "mcl_jukebox_track_3")
mcl_jukebox.register_record("Minetest", "Jordach", "far", "mcl_jukebox_record_far.png", "mcl_jukebox_track_4")
mcl_jukebox.register_record("Credit Roll (Jordach's HD Mix)", "Junichi Masuda", "chirp", "mcl_jukebox_record_chirp.png", "mcl_jukebox_track_5")
mcl_jukebox.register_record("Winter Feeling", "Tom Peter", "strad", "mcl_jukebox_record_strad.png", "mcl_jukebox_track_6")
mcl_jukebox.register_record("Synthgroove (Jordach's Mix)", "HeroOfTheWinds", "mellohi", "mcl_jukebox_record_mellohi.png", "mcl_jukebox_track_7")
mcl_jukebox.register_record("The Clueless Frog (Jordach's Mix)", "SoundHelix", "mall", "mcl_jukebox_record_mall.png", "mcl_jukebox_track_8")

--add backward compatibility
minetest.register_alias("mcl_jukebox:record_1", "mcl_jukebox:record_13")
minetest.register_alias("mcl_jukebox:record_2", "mcl_jukebox:record_wait")
minetest.register_alias("mcl_jukebox:record_3", "mcl_jukebox:record_blocks")
minetest.register_alias("mcl_jukebox:record_4", "mcl_jukebox:record_far")
minetest.register_alias("mcl_jukebox:record_5", "mcl_jukebox:record_chirp")
minetest.register_alias("mcl_jukebox:record_6", "mcl_jukebox:record_strad")
minetest.register_alias("mcl_jukebox:record_7", "mcl_jukebox:record_mellohi")
minetest.register_alias("mcl_jukebox:record_8", "mcl_jukebox:record_mall")