-- Luanti
-- Copyright (C) 2014 sapier
-- SPDX-License-Identifier: LGPL-2.1-or-later

MAIN_TAB_W = 15.5
MAIN_TAB_H = 7.1
TABHEADER_H = 0.85
GAMEBAR_H = 1.25
GAMEBAR_OFFSET_DESKTOP = 0.375
GAMEBAR_OFFSET_TOUCH = 0.15

local menupath = core.get_mainmenu_path()
local basepath = core.get_builtin_path()
defaulttexturedir = core.get_texturepath_share() .. DIR_DELIM .. "base" ..
					DIR_DELIM .. "pack" .. DIR_DELIM

dofile(basepath .. "common" .. DIR_DELIM .. "menu.lua")
dofile(basepath .. "common" .. DIR_DELIM .. "filterlist.lua")
dofile(basepath .. "fstk" .. DIR_DELIM .. "buttonbar.lua")
dofile(basepath .. "fstk" .. DIR_DELIM .. "dialog.lua")
dofile(basepath .. "fstk" .. DIR_DELIM .. "tabview.lua")
dofile(basepath .. "fstk" .. DIR_DELIM .. "ui.lua")
dofile(menupath .. DIR_DELIM .. "async_event.lua")
dofile(menupath .. DIR_DELIM .. "common.lua")
dofile(menupath .. DIR_DELIM .. "serverlistmgr.lua")
dofile(menupath .. DIR_DELIM .. "game_theme.lua")
dofile(menupath .. DIR_DELIM .. "content" .. DIR_DELIM .. "init.lua")

dofile(menupath .. DIR_DELIM .. "dlg_config_world.lua")
dofile(basepath .. "common" .. DIR_DELIM .. "settings" .. DIR_DELIM .. "init.lua")
dofile(menupath .. DIR_DELIM .. "dlg_confirm_exit.lua")
dofile(menupath .. DIR_DELIM .. "dlg_create_world.lua")
dofile(menupath .. DIR_DELIM .. "dlg_delete_content.lua")
dofile(menupath .. DIR_DELIM .. "dlg_delete_world.lua")
dofile(menupath .. DIR_DELIM .. "dlg_register.lua")
dofile(menupath .. DIR_DELIM .. "dlg_rename_modpack.lua")
dofile(menupath .. DIR_DELIM .. "dlg_version_info.lua")
dofile(menupath .. DIR_DELIM .. "dlg_reinstall_mtg.lua")
dofile(menupath .. DIR_DELIM .. "dlg_rebind_keys.lua")
dofile(menupath .. DIR_DELIM .. "dlg_clients_list.lua")
dofile(menupath .. DIR_DELIM .. "dlg_server_list_mods.lua")

local tabs = {
	content  = dofile(menupath .. DIR_DELIM .. "tab_content.lua"),
	about = dofile(menupath .. DIR_DELIM .. "tab_about.lua"),
	local_game = dofile(menupath .. DIR_DELIM .. "tab_local.lua"),
	play_online = dofile(menupath .. DIR_DELIM .. "tab_online.lua")
}

local function main_event_handler(tabview, event)
	if event == "MenuQuit" then
		local show_dialog = core.settings:get_bool("enable_esc_dialog")
		if not ui.childlist["mainmenu_quit_confirm"] and show_dialog then
			tabview:hide()
			local dlg = create_exit_dialog()
			dlg:set_parent(tabview)
			dlg:show()
		else
			core.close()
		end
		return true
	end
	return true
end

local function init_globals()
	-- Permanent warning if on an unoptimized debug build
	if core.is_debug_build() then
		local set_topleft_text = core.set_topleft_text
		core.set_topleft_text = function(s)
			s = (s or "") .. "\n"
			s = s .. core.colorize("#f22", core.gettext("Debug build, expect worse performance"))
			set_topleft_text(s)
		end
	end

	-- Init gamedata
	gamedata.worldindex = 0

	menudata.worldlist = filterlist.create(
		core.get_worlds,
		compare_worlds,
		-- Unique id comparison function
		function(element, uid)
			return element.name == uid
		end,
		-- Filter function
		function(element, gameid)
			-- Keep in sync with the logic in pkgmgr.find_by_gameid
			local el_gameid = pkgmgr.normalize_game_id(element.gameid)
			if el_gameid == gameid then
				return true
			end
			local game = pkgmgr.find_by_gameid(el_gameid)
			if (not game or game.id ~= el_gameid)
					and pkgmgr.find_by_gameid(gameid).aliases[el_gameid] then
				return true
			end
			return false
		end
	)

	menudata.worldlist:add_sort_mechanism("alphabetic", sort_worlds_alphabetic)
	menudata.worldlist:set_sortmode("alphabetic")

	mm_game_theme.init()
	mm_game_theme.set_engine() -- This is just a fallback.

	-- Create main tabview
	local tv_main = tabview_create("maintab", {x = MAIN_TAB_W, y = MAIN_TAB_H}, {x = 0, y = 0})

	tv_main:set_autosave_tab(true)
	tv_main:add(tabs.local_game)
	tv_main:add(tabs.play_online)
	tv_main:add(tabs.content)
	tv_main:add(tabs.about)

	tv_main:set_global_event_handler(main_event_handler)
	tv_main:set_fixed_size(false)

	local last_tab = core.settings:get("maintab_LAST")
	if last_tab and tv_main.current_tab ~= last_tab then
		tv_main:set_tab(last_tab)
	end

	tv_main:set_end_button({
		icon = defaulttexturedir .. "settings_btn.png",
		label = fgettext("Settings"),
		name = "open_settings",
		on_click = function(tabview)
			local dlg = create_settings_dlg()
			dlg:set_parent(tabview)
			tabview:hide()
			dlg:show()
			return true
		end,
	})

	ui.set_default("maintab")
	tv_main:show()
	ui.update()

	-- synchronous, chain parents to only show one at a time
	local parent = tv_main
	parent = migrate_keybindings(parent)
	check_reinstall_mtg(parent)

	-- asynchronous, will only be shown if we're still on "maintab"
	check_new_version()
end

assert(os.execute == nil)
init_globals()
