--[[
    This file is part of Ice Lua Components.

    Ice Lua Components 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 of the License, or
    (at your option) any later version.

    Ice Lua Components 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 Ice Lua Components.  If not, see <http://www.gnu.org/licenses/>.
]]

if common.version.num < 8388608 then
	error("You need Iceball version 0.2 or later to connect to this server.")
end

if common.mk_compat_disable then
	common.mk_compat_disable()
	client.mk_set_title("Iceball")
end

function client.hook_kick(reason)
	print("Kicked - "..reason)
	function client.hook_tick()
		error("Kicked - "..reason)
	end
	function client.hook_render()
		error("Kicked - "..reason)
	end
end

dofile("pkg/base/preconf.lua")
dofile("pkg/base/lib_fastload.lua")

-- load mod JSON files
mod_data = common.json_load("*MODCFG")
dofile("pkg/base/lib_mods.lua")
load_mod_list(getfenv(), mod_data.mods, {"preload", "preload_client"}, client_config, mod_data)

--might wanna reset these on a new instance/game/change of resolution
screen_width, screen_height = client.screen_get_dims()

-- if you don't want music, set FILE_MUSIC to "true".
FILE_MUSIC = FILE_MUSIC or "music.it"

print("pkg/base/main_client.lua starting")

dofile("pkg/base/version.lua")

local wav_buld = skin_load("wav", "buld.wav", DIR_PKG_WAV)
local wav_buld_frq = math.pow(0.5,3.0)
local wav_buld_inc = math.pow(2.0,0.5/12.0)

local wav_mus = nil
local mus_main = nil
--local wav_mus = skin_load("wav", "hammer.wav", DIR_PKG_WAV)
local chn_mus = nil

local vernotes = ""
local cver = common.version
local bug_str

local function bug_str_gen()
	local i
	local s = ""
	
	for i=1,#VERSION_BUGS do
		local bug = VERSION_BUGS[i]
		if ((not bug.intro) or bug.intro <= cver.num) and
			((not bug.fix) or bug.fix > cver.num) and
				(client.renderer == nil or bug.renderer == nil or client.renderer == bug.renderer) then
			s = s.."- "..bug.msg.."\n"
		end
	end
	
	return (s ~= "" and "\nCLIENT ISSUES:\n"..s) or ""
end

if cver.num == 2 and common.img_fill then
	cver = {
		cmp={0,0,0,0,3},
		num=3,
		str="0.0-3",
	}
	VERSION_BUGS[#VERSION_BUGS+1] = 
		{intro=nil, fix=nil, msg="Triplefox forgot to bump the version number in this build"}
end

if cver == nil then
	cver = {
		cmp={0,0,0,0,-1004},
		num=-1,
		str="iceballfornoobs-004 (or pre-0.0-1 git)",
	}
	bug_str = bug_str_gen(cver.num)
	vernotes = [[
This is one of a multitude of old versions,
most likely iceballfornoobs-004.
]]..bug_str..[[
We will inform you once we have a newer noob build.

If you're using a git build, please upgrade!]]
elseif cver.num == VERSION_ENGINE.num then
	bug_str = bug_str_gen(cver.num)
	vernotes = [[
This is the expected version.
]]..bug_str..[[]]
elseif cver.num > VERSION_ENGINE.num and cver.cmp[5] == 0 then
	bug_str = bug_str_gen(cver.num)
	vernotes = [[
This is a newer version than this mod expects.
Please tell the server owner to upgrade.
]]..bug_str..[[]]
elseif cver.num > VERSION_ENGINE.num then
	bug_str = bug_str_gen(cver.num)
	vernotes = [[
This is a newer version than this mod expects.
The bug information here might not apply.
]]..bug_str..[[]]
else
	bug_str = bug_str_gen(cver.num)
	vernotes = [[
This is an older version than this mod expects.
You should have at least ]]..VERSION_ENGINE.str..[[.
]]..bug_str..[[]]
end

-- please excuse this hack.
argarr = {...}
function argspew_gen(arr, idx)
	local v = arr[idx]
	if v == nil then return end
	return v, argspew_gen(arr, idx+1)
end

dofile("pkg/base/lib_gui.lua")

-- 0.1.2-2 introduces PNG support
-- 0.1.2-4 introduces support for indexed+greyscale images and tRNS-block (magic colour + palette alpha) transparency
-- there's no reason to make them load the full RGB image when they don't support the indexed one.
if common.version.num < 4259840+4 then
	img_loading = img_loading or skin_load("tga", "loading_default-64c.tga", DIR_PKG_GFX)
else
	img_loading = img_loading or skin_load("png", "loading_default.png", DIR_PKG_GFX)
end

img_map = img_map or common.fetch_block("png", "*MAPIMG")
map_img_seen = false

do
	local scriptcache = {}
	
	local fnlist = {}
	local last_keepalive = common.time()
	function load_screen_fetch(ftype, fname)
		if string.sub(fname, 1,6) == "clsave" then return client.fetch_block(ftype, fname) end
		if widgets ~= nil then
			scene = gui_create_scene(w, h)
			loading_img = scene.image{img=img_loading, x=screen_width/2, y=screen_height/2}
			scene.root.add_child(loading_img)
			if img_map then
				map_img = scene.image{img=img_map, x=-screen_width/2, y=screen_height/2}
				scene.root.add_child(map_img)
			end
		end
		
		local cname = ftype.."!"..fname
		local cacheable = ftype ~= "map" and ftype ~= "icemap" and ftype ~= "vxl"
		
		if cacheable and scriptcache[cname] then
			fnlist[#fnlist+1] = fname.." [CACHED]"
			return scriptcache[cname]
		end

		local fl = fastload_check(ftype, fname)
		if fl ~= nil then
			fnlist[#fnlist+1] = fname.." [FASTLOAD]"
			return fl
		end
		
		client.wav_play_local(wav_buld, 0, 0, 0, 0.3, wav_buld_frq)
		wav_buld_frq = wav_buld_frq * wav_buld_inc
		
		fnlist[#fnlist+1] = fname
		
		local map,r,g,b,dist
		map = common.map_get()
		r,g,b,dist = client.map_fog_get()
		
		local old_tick = client.hook_tick
		local old_render = client.hook_render
		local old_key = client.hook_key
		local old_mouse_button = client.hook_mouse_button
		local old_mouse_motion = client.hook_mouse_motion
		
		function client.hook_key(sym, uni, state, modif)
			-- TODO!
		end
		
		function client.hook_mouse_button(button, state)
			-- TODO!
		end
		
		function client.hook_mouse_motion(x, y, dx, dy)
			-- TODO!
		end
		
		common.map_set(nil)
		client.map_fog_set(85, 85, 85, 127.5)
		local csize, usize, amount
		local obj = common.fetch_start(ftype, fname)
		
		local loadstr = "Fetching..."
		
		function client.hook_render()
			if scene then
				scene.draw()
			end
			
			if chn_mus and not client.wav_chn_exists(chn_mus) then
				chn_mus = client.wav_play_local(wav_mus)
			end
			
			local i
			local koffs = math.max(#fnlist-10,1)
			for i=koffs,#fnlist do
				font_mini.print(2, 2+(i-koffs)*8, 0xFFFFFFFF, "LOAD: "..fnlist[i])
			end
			font_mini.print(2, screen_height-10, 0xFFFFFFFF, loadstr)
			
			font_mini.print(2, 2+(12)*8, 0xFFFFFFFF, "Version: "..cver.str.." - renderer: "..(client.renderer or "<unknown>"))
			local l = string.split(vernotes,"\n")
			for i=1,#l do
				font_mini.print(2, 2+(i+14)*8, 0xFFFFFFFF, l[i])
			end
		end
		
		function client.hook_tick(sec_current, sec_delta)
			if scene ~= nil then
				scene.pump_listeners(sec_delta, {})
			end
			-- TODO!
			--print("tick called.")
			return 0.005
		end
		
		csize = nil
		usize = nil
		amount = 0.0
		if obj == true then
			rgb = 85
			while true do
				local ctime = common.time()
				obj, csize, usize, amount = common.fetch_poll()
				if PKT_KEEPALIVE and ctime ~= last_keepalive then
					last_keepalive = ctime
					common.net_send(nil, common.net_pack("BB", PKT_KEEPALIVE), true)
				end
				--print("obj:", obj, csize, usize, amount)
				if obj ~= false then break end
				
				if fnlist[#fnlist] == "*MAP" then
					rgb = 85 + amount * 170.0
					client.map_fog_set(rgb, rgb, rgb, 127.5)
					loading_img.x = screen_width/2 + amount * screen_width
					if map_img then
						map_img.x = -screen_width/2 + amount * screen_width
						map_img_seen = true
					end
				elseif map_img_seen then
					loading_img.x = 3*screen_width/2
					map_img.x = screen_width/2
				end
				
				if csize then
					loadstr = "Fetching... "
						..(math.floor(amount*100.0))
						.."% ("
						..(math.floor(amount*csize))
						.."/"
						..csize
						.." - uncompressed = "
						..usize
						..")"
				end
			end
		end
		
		client.hook_tick = old_tick
		client.hook_render = old_render
		client.hook_key = old_key
		client.hook_mouse_button = old_mouse_button
		client.hook_mouse_motion = old_mouse_motion
		
		common.map_set(map)
		if client.camera_shading_set then
			client.camera_shading_set(0.8,0.6,0.7,0.8,1.0,0.9)
		end
		client.map_fog_set(r,g,b,dist)
		
		if cacheable then
			scriptcache[cname] = obj
		end
		
		return obj
	end
end

common.fetch_block = load_screen_fetch

function client.hook_tick()
	client.hook_tick = nil
	if FILE_MUSIC ~= true then
		if common.mus_load_it then
			mus_main = skin_load("it", FILE_MUSIC, DIR_PKG_IT)
			client.mus_play(mus_main)
		else
			-- TODO: drop this code eventually
			wav_mus = skin_load("wav", "music.wav", DIR_PKG_WAV)
			chn_mus = client.wav_play_local(wav_mus)
		end
	end
	fastload_fetch()
	loadfile("pkg/"..common.base_dir.."/client_start.lua")(argspew_gen(argarr, 1))
	if wav_mus then
		if chn_mus and client.wav_chn_exists(chn_mus) then
			client.wav_kill(chn_mus)
		end
		client.wav_free(wav_mus)
	end
	if mus_main then
		client.mus_stop()
		-- disabled until we fix that race condition that causes a crash
		--client.mus_free(mus_main)
	end
	return 0.005
end

print("pkg/base/main_client.lua loaded.")