local formula = Levels.Formula

net.Receive("UpdateInfo", function(ply, len)
	local tar = net.ReadEntity()
	tar.Skills = net.ReadTable()
end)

net.Receive("SetLevel", function(ply, len)
	local tar = net.ReadEntity()
	local skill = net.ReadString()
	local level = net.ReadUInt(8)

	tar.Skills[skill].level = level

	hook.Call("SetLevel", nil, tar, skill, level)
end)

net.Receive("SetXP", function(ply, len)
	local tar = net.ReadEntity()
	local skill = net.ReadString()
	local experience = net.ReadUInt(32)

	tar.Skills[skill].experience = experience

	hook.Call("SetXP", nil, tar, skill, experience)
end)

local levelBackground = Material("vgui/ob_hudelements/backgroundbar.png")
local levelBarBackground = Material("vgui/ob_hudelements/level_progressbar_bg.png")
local levelBar = Material("vgui/ob_hudelements/level_progressbar.png")
local material = Material("vgui/ob_hudelements/progressbar.png")

local foreground, bar, background
local texCoords = {}

local function SetupCoords()
    local texW, texH = 1024, 96

    texCoords[1] = {x = 0, y = 0, w = 1024, h = 64}
    texCoords[2] = {x = 0, y = 64, w = 512, h = 32}
    texCoords[3] = {x = 513, y = 64, w = 32, h = 32}

    for k,v in pairs(texCoords) do
        v.w = math.Round((v.w + v.x) / texW, 3)
        v.h = math.Round((v.h + v.y) / texH, 3)
        v.x = math.Round(v.x / texW, 3)
        v.y = math.Round(v.y / texH, 3)
    end

    bar = texCoords[1]
    foreground = texCoords[2]
    background = texCoords[3]
end
SetupCoords()

local drawing = false

local skill, experience, maxExperience, time, displayXp
local function DrawLevel()
	local alpha = math.min(1000 * ((time - CurTime()) / 5), 255)
	if(alpha < 0 or !skill or !level) then
		hook.Remove("HUDPaint", "LEVEL_DrawHUD")
		drawing = false
	end

	surface.SetDrawColor( Color(255, 255, 255, alpha))

	displayXp = Lerp( FrameTime(), displayXp, experience)

	surface.SetMaterial(material)
	surface.DrawTexturedRectUV( 0, ScrH() * 0.1, ScrW(), 32, background.x, background.y, background.w, background.h)

	surface.SetMaterial(material)
	surface.DrawTexturedRectUV( ScrW() * 0.5 - 256, ScrH() * 0.1, 512, 32, bar.x, bar.y, bar.w, bar.h)

	surface.SetMaterial(material)
	surface.DrawTexturedRectUV( ScrW() * 0.5 - 235, ScrH() * 0.1 + 8, 470 * (displayXp / maxExperience), 16, foreground.x, foreground.y, foreground.w, foreground.h)

	surface.SetFont("DarkRPHUD2")
	local w1, h1 = surface.GetTextSize(level)

	surface.SetFont("DarkRPHUD2")
	local w2, h2 = surface.GetTextSize(skill)

	draw.DrawNonParsedText(skill, "DarkRPHUD2", ScrW() * 0.5 - w2 - w1 - 268, ScrH() * 0.106, Color( 180, 180, 180, alpha ), 0)
	draw.DrawNonParsedText(level, "DarkRPHUD2", ScrW() * 0.5 - w1 - 268, ScrH() * 0.106, Color( 255, 255, 255, alpha ), 0)
end

hook.Add("SetLevel", "LEVEL_Bars", function(ply, name, lvl)
	if(ply != LocalPlayer()) then return end

	time = CurTime() + 5
	skill = string.upper(name) .. " "
	level = ST_Level

	local skills = ply.Skills[name]
	local currentLevel = ST_Level
	displayXp = 0
	maxExperience = formula(skills.level + 1) - currentLevel

	surface.PlaySound("music/hl1_song11.mp3")
end)

hook.Add("SetXP", "XP_Bars", function(ply, name, xp)
	if(ply != LocalPlayer()) then return end

	time = CurTime() + 5

	local skills = ply.Skills[name]

	local currentLevel = formula(skills.level)
	experience = xp - currentLevel
	maxExperience = formula(skills.level + 1) - currentLevel

	skill = string.upper(name) .. " "
	level = skills.level

	if(!drawing) then
		if(!displayXp) then
			displayXp = experience
		end

		hook.Add("HUDPaint", "LEVEL_DrawHUD", DrawLevel)
		drawing = true
	end
end)