--Minetest
--Copyright (C) 2014 sapier
--
--This program is free software; you can redistribute it and/or modify
--it under the terms of the GNU Lesser General Public License as published by
--the Free Software Foundation; either version 3.0 of the License, or
--(at your option) any later version.
--
--This program is distributed in the hope that it will be useful,
--but WITHOUT ANY WARRANTY; without even the implied warranty of
--MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--GNU Lesser General Public License for more details.
--
--You should have received a copy of the GNU Lesser General Public License along
--with this program; if not, write to the Free Software Foundation, Inc.,
--51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

local lang = core.settings:get("language")
if not lang or lang == "" then lang = os.getenv("LANG") end
local mobile = PLATFORM == "Android" or PLATFORM == "iOS"

local enable_gamebar = PLATFORM ~= "Android"
local current_game, singleplayer_refresh_gamebar

if enable_gamebar then
	function current_game()
		local last_game_id = core.settings:get("menu_last_game")
		local game = pkgmgr.find_by_gameid(last_game_id)

	return game
end

local function singleplayer_refresh_gamebar()
	local old_bar = ui.find_by_name("game_button_bar")

	if old_bar ~= nil then
		old_bar:delete()
	end

	local function game_buttonbar_button_handler(fields)
		if fields.game_open_cdb then
			local maintab = ui.find_by_name("maintab")
			local dlg = create_store_dlg("game")
			dlg:set_parent(maintab)
			maintab:hide()
			dlg:show()
			return true
		end

		for key, value in pairs(fields) do
			for j=1, #pkgmgr.games do
				if ("game_btnbar_" .. pkgmgr.games[j].id == key) then
					mm_texture.update("singleplayer", pkgmgr.games[j])
				--	core.set_topleft_text(pkgmgr.games[j].name)
					core.settings:set("menu_last_game",pkgmgr.games[j].id)
					menudata.worldlist:set_filtercriteria(pkgmgr.games[j].id)
					--[[local index = filterlist.get_current_index(menudata.worldlist,
						tonumber(core.settings:get("mainmenu_last_selected_world")))
					if not index or index < 1 then
						local selected = core.get_table_index("sp_worlds")
						if selected ~= nil and selected < #menudata.worldlist:get_list() then
							index = selected
						else
							index = #menudata.worldlist:get_list()
						end
					end]]

					return true
				end
			end
		end
	end

	local btnbar = buttonbar_create("game_button_bar",
		game_buttonbar_button_handler,
		{x=-1.35, y=-0.32}, "vertical", {x=1, y=6.14})

	for i=1, #pkgmgr.games do
		if pkgmgr.games[i].id ~= "default" then
			local btn_name = "game_btnbar_" .. pkgmgr.games[i].id

			local image = nil
			local text = nil
			local tooltip = core.formspec_escape(pkgmgr.games[i].name)

			if pkgmgr.games[i].menuicon_path ~= nil and
				pkgmgr.games[i].menuicon_path ~= "" then
				image = core.formspec_escape(pkgmgr.games[i].menuicon_path)
			else
				local part1 = pkgmgr.games[i].id:sub(1,5)
				local part2 = pkgmgr.games[i].id:sub(6,10)
				local part3 = pkgmgr.games[i].id:sub(11)

				text = part1 .. "\n" .. part2
				if part3 ~= nil and
					part3 ~= "" then
					text = text .. "\n" .. part3
				end
			end

			btnbar:add_button(btn_name, text, image, tooltip)
		end
	end

	if not mobile then
		local plus_image = core.formspec_escape(defaulttexturedir .. "plus.png")
		btnbar:add_button("game_open_cdb", "", plus_image, fgettext("Install games from ContentDB"))
	end
end

local function filter_default()
	local gameid = core.settings:get("menu_last_game")
	if not gameid or gameid == "" or gameid == "default" then
		for j=1, #pkgmgr.games do
			local name = pkgmgr.games[j].id
			if name and name ~= "default" then
				menudata.worldlist:set_filtercriteria(name)
				core.settings:set("menu_last_game", name)
				mm_texture.update("singleplayer", current_game())
				return
			end
		end
	end
end

local function get_formspec()
	filter_default()
	local index = filterlist.get_current_index(menudata.worldlist,
				tonumber(core.settings:get("mainmenu_last_selected_world")))

	local creative_checkbox = core.settings:get_bool("creative_mode") and
			"creative_checkbox" or "blank"

	local creative_bg = "creative_bg.png"
	if lang and lang == "ru" then
		creative_bg = "creative_bg_" .. lang .. ".png"
	end

	local retval =
			"image_button[0,4.84;3.31,0.92;" ..
				core.formspec_escape(defaulttexturedir ..
					"blank.png") .. ";world_delete;;true;false]" ..
			"tooltip[world_delete;".. fgettext("Delete") .. "]" ..
			"image_button[3.14,4.84;3.3,0.92;" ..
				core.formspec_escape(defaulttexturedir ..
					"blank.png") .. ";world_create;;true;false]" ..
			"tooltip[world_create;".. fgettext("New") .. "]" ..
			"button[9.5,4.8;2.5,1;world_configure;".. fgettext("Configure") .. "]" ..

			"image_button[6.72,1.43;4.96,1.41;" ..
				core.formspec_escape(defaulttexturedir ..
					"blank.png") .. ";play;;true;false]" ..
			"tooltip[play;".. fgettext("Play Game") .. "]" ..

			"image_button[7.2,3.09;4,0.83;" ..
				core.formspec_escape(defaulttexturedir) .. creative_bg ..
				";;;true;false]" ..
			"image_button[7.2,3.09;4,0.83;" ..
				core.formspec_escape(defaulttexturedir) .. creative_checkbox ..
					".png;cb_creative_mode;;true;false]" ..

			"tableoptions[background=#27233F;border=false]" ..
			"table[-0.01,0;6.28,4.64;sp_worlds;" ..
			menu_render_worldlist() ..
			";" .. index .. "]"


	if PLATFORM ~= "Android" and PLATFORM ~= "iOS" then
		retval = retval ..
				"checkbox[6.6,5;cb_server;".. fgettext("Create Server") ..";" ..
					dump(core.settings:get_bool("enable_server")) .. "]"
	end

	if core.settings:get_bool("enable_server") then
		retval = retval ..
				"checkbox[6.6,0.65;cb_server_announce;" .. fgettext("Announce Server") .. ";" ..
					dump(core.settings:get_bool("server_announce")) .. "]" ..

				-- Name / Password
				"label[6.6,-0.3;" .. fgettext("Name") .. ":" .. "]" ..
				"label[9.3,-0.3;" .. fgettext("Password") .. ":" .. "]" ..
				"field[6.9,0.6;2.8,0.5;te_playername;;" ..
					core.formspec_escape(core.settings:get("name")) .. "]" ..
				"pwdfield[9.6,0.6;2.8,0.5;te_passwd;]"
	end

	return retval
end

local function main_button_handler(this, fields, name)
	assert(name == "local")

	local world_doubleclick = false

	if fields["sp_worlds"] ~= nil then
		local event = core.explode_table_event(fields["sp_worlds"])
		local selected = core.get_table_index("sp_worlds")

		if event.type == "DCL" then
			world_doubleclick = true
		end

		if event.type == "CHG" and selected ~= nil then
			core.settings:set("mainmenu_last_selected_world",
				menudata.worldlist:get_raw_index(selected))
			return true
		end
	end

	if menu_handle_key_up_down(fields,"sp_worlds","mainmenu_last_selected_world") then
		return true
	end

	if fields["cb_creative_mode"] then
		local creative_mode = core.settings:get_bool("creative_mode")
		core.settings:set("creative_mode", tostring(not creative_mode))
		core.settings:set("enable_damage", tostring(creative_mode))

		return true
	end

	if fields["cb_server"] then
		core.settings:set("enable_server", fields["cb_server"])

		return true
	end

	if fields["cb_server_announce"] then
		core.settings:set("server_announce", fields["cb_server_announce"])
		local selected = core.get_table_index("srv_worlds")
		menu_worldmt(selected, "server_announce", fields["cb_server_announce"])

		return true
	end

	if fields["play"] ~= nil or world_doubleclick or fields["key_enter"] then
		local selected = core.get_table_index("sp_worlds")
		gamedata.selected_world = menudata.worldlist:get_raw_index(selected)
		core.settings:set("maintab_LAST", "local")
		core.settings:set("mainmenu_last_selected_world", gamedata.selected_world)

		if selected == nil or gamedata.selected_world == 0 then
			gamedata.errormessage =
					fgettext("No world created or selected!")
			return true
		end

		-- Update last game
		local world = menudata.worldlist:get_raw_element(gamedata.selected_world)
		if world then
			local game = pkgmgr.find_by_gameid(world.gameid)
			core.settings:set("menu_last_game", game.id)
		end

		if core.settings:get_bool("enable_server") then
			gamedata.playername = fields["te_playername"]
			gamedata.password   = fields["te_passwd"]
			gamedata.port       = fields["te_serverport"]
			gamedata.address    = ""

			core.settings:set_bool("auto_connect", false)
			if fields["port"] ~= nil then
				core.settings:set("port",fields["port"])
			end
			if fields["te_serveraddr"] ~= nil then
				core.settings:set("bind_address",fields["te_serveraddr"])
			end
		else
			gamedata.singleplayer = true
			core.settings:set_bool("auto_connect", true)
			core.settings:set("connect_time", os.time())
			core.start()
		end

		core.start()
		return true
	end

	if fields["world_create"] ~= nil then
		local create_world_dlg = create_create_world_dlg(true)
		create_world_dlg:set_parent(this)
		this:hide()
		create_world_dlg:show()
		mm_texture.update("singleplayer", current_game())
		return true
	end

	if fields["world_delete"] ~= nil then
		local selected = core.get_table_index("sp_worlds")
		if selected ~= nil and
			selected <= menudata.worldlist:size() then
			local world = menudata.worldlist:get_list()[selected]
			if world ~= nil and
				world.name ~= nil and
				world.name ~= "" then
				local index = menudata.worldlist:get_raw_index(selected)
				local delete_world_dlg = create_delete_world_dlg(world.name, index, world.gameid)
				delete_world_dlg:set_parent(this)
				this:hide()
				delete_world_dlg:show()
				mm_texture.update("singleplayer",current_game())
			end
		end

		return true
	end

	if fields["world_configure"] ~= nil then
		local selected = core.get_table_index("sp_worlds")
		if selected ~= nil then
			local configdialog =
				create_configure_world_dlg(
						menudata.worldlist:get_raw_index(selected))

			if (configdialog ~= nil) then
				configdialog:set_parent(this)
				this:hide()
				configdialog:show()
				mm_texture.update("singleplayer",current_game())
			end
		end

		return true
	end
end

local function on_change(type, old_tab, new_tab)
	if (type == "ENTER") then
		local game = current_game()

		if game then
			menudata.worldlist:set_filtercriteria(game.id)
			core.set_topleft_text("Powered by Minetest Engine")
			mm_texture.update("singleplayer",game)
		end

		singleplayer_refresh_gamebar()
		ui.find_by_name("game_button_bar"):show()
	else
		menudata.worldlist:set_filtercriteria(nil)
		local gamebar = ui.find_by_name("game_button_bar")
		if gamebar then
			gamebar:hide()
		end
		core.set_topleft_text("")
		mm_texture.update(new_tab,nil)
	end
end

--------------------------------------------------------------------------------
return {
	name = "local",
	caption = fgettext("Other games"),
	cbf_formspec = get_formspec,
	cbf_button_handler = main_button_handler,
	on_change = on_change
}