---------------------
-- Your Name is Benny
---------------------


if SERVER then
	util.AddNetworkString( "Benny_DebugMenuSpawn" )
	net.Receive( "Benny_DebugMenuSpawn", function( len, ply )
		if !ply:IsAdmin() then return end
		local ent = ents.Create( "b-item_" .. net.ReadString() )
		ent:Spawn()

		local TRACE = ply:GetEyeTrace()
		local thespawnpos = TRACE.HitPos
		thespawnpos:Add( TRACE.HitNormal * 16 )
		local WORLDAA, WORLDBB = ent:GetCollisionBounds()

		local tr = util.TraceHull( {
			start = thespawnpos,
			endpos = thespawnpos - (vector_up*32),
			mins = WORLDAA,
			maxs = WORLDBB,
			collisiongroup = COLLISION_GROUP_WEAPON,
		})
		thespawnpos:Set( tr.HitPos )
		ent:SetPos( thespawnpos )
		--[[local WORLDAA, WORLDBB = ent:GetCollisionBounds()
		local WORLDC = ent:WorldSpaceCenter()
		local TRACE = ply:GetEyeTrace()
		local thespawnpos = TRACE.HitPos
		thespawnpos:Add( WORLDC/2 )
		thespawnpos:Add( ((WORLDBB * TRACE.HitNormal) - (WORLDAA * TRACE.HitNormal)) )
		ent:SetPos( thespawnpos )]]

		debugoverlay.Box( thespawnpos, WORLDAA, WORLDBB, 4, Color( 255, 255, 255, 0) )
	end)
	return
end

local function dospawn( self )
	net.Start( "Benny_DebugMenuSpawn" )
		net.WriteString( self.iName )
	net.SendToServer()
	DebugMenu:Remove()
	return
end

local function OpenDebugMenu()
	if IsValid(DebugMenu) then DebugMenu:Remove() end
	DebugMenu = vgui.Create("DFrame")
	DebugMenu:SetSize( 600, 500 )
	DebugMenu:Center()
	DebugMenu:MakePopup()
	DebugMenu:SetKeyboardInputEnabled( false )
	DebugMenu:SetSizable(true)

	local splitter = DebugMenu:Add("DHorizontalDivider")
	splitter:Dock( FILL )
	splitter:SetLeftWidth(200)


	local opt = DebugMenu:Add("DScrollPanel")
	--opt:Dock( FILL )
	splitter:SetLeft( opt )

	local vsplit = DebugMenu:Add("DVerticalDivider")
	splitter:SetRight( vsplit )
	vsplit:SetTopHeight( 500/2 )

	local texter = DebugMenu:Add("DTextEntry")
	texter:SetFont( "HUD_24" )
	texter:SetMultiline( true )
	vsplit:SetBottom( texter )

	
	local matColor = Material( "models/debug/debugwhite" )

	local modeller = DebugMenu:Add("DModelPanel")
	do
		vsplit:SetTop( modeller )
		modeller:SetModel( "models/weapons/w_pistol.mdl" )
		modeller:SetFOV( 5 )
		local original = Vector( 0, 50, 0 )
		modeller:SetCamPos( original )
		modeller:SetLookAt( vector_origin )
		function modeller:LayoutEntity( ent )
			ent:SetPos( Vector( 0, 0, 0 ) )
			ent:SetAngles( Angle( 0, 0 * RealTime() * 10 % 360, 0 ) )
			return
		end

		modeller:SetAmbientLight( HSLToColor( 0, 0, 1.00 ) )
		modeller:SetDirectionalLight(BOX_TOP, HSLToColor( 0, 0, 1.00 ) )
		modeller:SetDirectionalLight(BOX_FRONT, HSLToColor( 0, 0, 1.00 ) )
		modeller:SetDirectionalLight(BOX_RIGHT, HSLToColor( 0, 0, 1.00 ) )

		function modeller:Update( mdl )
			if self.Entity:GetModel() == mdl then return end
			self.Entity:SetModel( mdl )
			local worked = self.Entity:PhysicsInit( SOLID_VPHYSICS )

			if worked then
				-- Factors the USP's bodygroup suppressor for some reason. Great
				local mins, maxs = self.Entity:GetCollisionBounds()
				local wsc = Vector()
				wsc:Add( mins )
				wsc:Add( maxs )
				wsc:Div( 2 )

				self:SetLookAt( wsc )
				self:SetCamPos( wsc+original )
				
				-- local HFOV = 45-5
				-- local hfovRad = HFOV * math.pi / 180
				-- local vfovRad = 2*math.atan(math.tan(hfovRad/2)*(self:GetTall()/self:GetWide()))
				-- local VFOV = math.ceil(vfovRad* 180 / math.pi)

				local directionAngCos = math.cos( math.rad(5/2) )
				-- scale test
				if true then for i=1, 50 do
					local S1, S2 = false, false
					local aimVector = (self:GetLookAt() - self:GetCamPos()):GetNormalized()
					do -- test 1, mins
						local entVector = mins - self:GetCamPos()
						local angCos = aimVector:Dot(entVector) / entVector:Length()
						S1 = (angCos >= directionAngCos)
					end
					do -- test 2: maxs
						local entVector = maxs - self:GetCamPos()
						local angCos = aimVector:Dot(entVector) / entVector:Length()
						S2 = (angCos >= directionAngCos)
					end
					if S1 and S2 then
						self.indicate = "took " .. i
						self.vCamPos:Add( Vector( 0, 20, 0 ) )
						--self.vLookatPos:Add( Vector( 0, 0, 0 ) )
						--self.vLookatPos:Set( (mins+maxs)/2 )
						break
					else
						self.indicate = "failed"
						self.vCamPos:Sub( (aimVector*20) )
					end
				end end
			else
				self.indicate = false
				self:SetLookAt( vector_origin )
				self:SetCamPos( original )
			end
			self.Failed = !worked
		end

		local material = Material( "sprites/splodesprite" )
		function modeller:Paint1( w, h )
			if ( !IsValid( self.Entity ) ) then return end
		
			local x, y = self:LocalToScreen( 0, 0 )
		
			self:LayoutEntity( self.Entity )
		
			local ang = self.aLookAngle
			if ( !ang ) then
				ang = ( self.vLookatPos - self.vCamPos ):Angle()
			end
		
			cam.Start3D( self.vCamPos, ang, self.fFOV, x, y, w, h, 5, self.FarZ )
		
			render.SuppressEngineLighting( true )
			render.SetLightingOrigin( vector_origin )
			render.ResetModelLighting( self.colAmbientLight.r / 255, self.colAmbientLight.g / 255, self.colAmbientLight.b / 255 )
			render.SetColorModulation( self.colColor.r / 255, self.colColor.g / 255, self.colColor.b / 255 )
			render.SetBlend( ( self:GetAlpha() / 255 ) * ( self.colColor.a / 255 ) ) -- * surface.GetAlphaMultiplier()
		
			for i = 0, 6 do
				local col = self.DirectionalLight[ i ]
				if ( col ) then
					render.SetModelLighting( i, col.r / 255, col.g / 255, col.b / 255 )
				end
			end
		
			render.MaterialOverride(matColor)
			self:DrawModel()
			render.MaterialOverride()

			local mins, maxs = self.Entity:GetCollisionBounds()

			-- render.SetColorMaterial()
			-- render.DrawSphere( mins, .5, 30, 30, Color( 255, 0, 0 ) )
			-- render.DrawSphere( maxs, .5, 30, 30, Color( 0, 0, 255 ) )
			-- render.DrawWireframeBox( vector_origin, angle_zero, mins, maxs, Color( 0, 0, 0, 127 ))
		
			render.SuppressEngineLighting( false )
			cam.End3D()
		
			self.LastPaint = RealTime()
		end
		function modeller:Paint( w, h )
			surface.SetDrawColor( color_black )
			surface.DrawRect( 0, 0, w, h )
			self:Paint1( w, h )
			if self.Failed then
				draw.SimpleText("Failed physinit, not cached?", "HUD_36", w/2, h/2, color_white, TEXT_ALIGN_CENTER, TEXT_ALIGN_CENTER)
			end
			-- if self.indicate then
			-- 	draw.SimpleText(self.indicate, "HUD_36", w/2, h/2 + 48, color_white, TEXT_ALIGN_CENTER, TEXT_ALIGN_CENTER)
			-- end
		end
	end

	local categories = {}

	for iname, idata in SortedPairs( ITEMS ) do
		if idata.Category == "base" then continue end
		if !categories[idata.Category] then
			local cate = opt:Add("DCollapsibleCategory")
			cate:Dock(TOP)
			cate:SetLabel(idata.Category)
			local plist = vgui.Create("DPanelList")
			cate:SetContents(plist)
			categories[idata.Category] = plist
		end
		local plist = categories[idata.Category]
		local button = plist:Add("DButton")
		button:Dock( TOP )
		button:DockMargin( 0, 0, 0, 0 )
		button:SetText( l8( idata.PrintName ) )
		button:SetTall(32)
		button.iName = iname
		button.iData = idata
		button.DoClick = dospawn

		function button:Think()
			if self:IsHovered() then
				texter:SetText( l8(idata.Description) .. "\n\nClipsize: " .. (idata.ClipSize or "?") )
				modeller:Update( idata.Model )
			end
		end
	end

	local button = DebugMenu:Add("DButton")
	button:Dock( BOTTOM )
	button:DockMargin( 4, 4, 4, 4 )
	button:SetText( "CLOSE" )
	button:SetTall( 36 )
	button.DoClick = function( self )
		DebugMenu:Remove()
	end
end

hook.Add("PlayerButtonDown", "PlayerButtonDown_DebugMenu", function( ply, button )
	if button == KEY_F1 then
		OpenDebugMenu()
	end
end)

hook.Add("PlayerButtonUp", "PlayerButtonUp_DebugMenu", function( ply, button )
	if button == KEY_F1 then
		--if IsValid(DebugMenu) then DebugMenu:Remove() end
	end
end)