if (SERVER) then AddCSLuaFile() end

ENT.Type 			= "anim"
ENT.Base 			= "base_anim"
ENT.Spawnable 		= true
ENT.AdminSpawnable 	= true

ENT.Category 	= "DayZ Modules"
ENT.PrintName	= "Backpack Base"

ENT.Author		= "Zephruz"
ENT.Contact		= "ScriptFodder"

ENT.RenderGroup	= RENDERGROUP_TRANSLUCENT

function ENT:SetupDataTables()
	self:NetworkVar("String", 0, "BPType")
	self:NetworkVar("Entity", 0, "BPOwner")
end

function ENT:Initialize()
	self.BackpackItems = {}

	if (SERVER) then
		self:SetUseType( SIMPLE_USE )

		self:SetupBPInfo("small_backpack")

		self:NetworkVarNotify( "BPOwner", self.OnVarChanged )
	end
end

if (CLIENT) then
	function ENT:Draw()
		local bpOwn = self:GetBPOwner()

		-- self:SetPos(self:GetPos())

		if (!self.GetBPOwner or !self:GetBPOwner():IsValid()) then
			self:DrawModel()
		else
			local m = Matrix()
			local att = bpOwn:GetAttachment(bpOwn:LookupAttachment("chest"))
			m:Translate(att.Pos)
			m:Rotate(att.Ang)

			m:Translate(Vector(-9, 2, -5))
			m:Rotate(Angle(0, 180, 0))

			self:SetPos(m:GetTranslation())
			self:SetAngles(m:GetAngles())

			if (self:GetBPOwner() == LocalPlayer()) then
				if (GMODZ_bThirdPerson) then
					self:DrawModel()
				end
			else
				self:DrawModel()
			end
		end

		self:DrawShadow(false)
	end

	function ENT:OnRemove()
		local bpModel = self.BPModel

		if (bpModel && bpModel:IsValid()) then
			bpModel:Remove()
		end
	end
end

if (SERVER) then
	util.AddNetworkString("DZ_Backpacks.OpenGUI")

	function ENT:Think()
		if (self.GetBPOwner && self:GetBPOwner() && self:GetBPOwner():IsValid()) then
			if (self:GetPos():Distance(self:GetBPOwner():GetPos()) > 350) then
				self:SetPos(self:GetBPOwner():GetPos())
			end
		end
	end


	ENT.NTTime = os.time() + 0.2
	function ENT:Touch(ent)
		if (!ent or !ent:IsValid()) then return false end

		if (self.NTTime > os.time()) then return false end
		self.NTTime = os.time() + 0.2

		local bpAllI = DZ_Backpacks.AllowedItems

		for i=1,#bpAllI do
			if (!ent:GetClass():find(bpAllI[i])) then return false end
		end

		self:AddItem({
			name = ent.PrintName,
			class = ent:GetClass(),
			model = ent:GetModel(),
			amt = 1,
		})

		ent:Remove()

		return true
	end

	function ENT:SetupBPInfo(bpid)
		local bptype = DZ_Backpacks.Types[bpid]

		if (bptype) then
			self:SetBPType(bpid)

			self:SetModel( table.Random(bptype.models) )
			self:SetCollisionGroup( COLLISION_GROUP_NONE )
			self:PhysicsInit( SOLID_VPHYSICS )
			self:SetSolid( SOLID_VPHYSICS )
			self:PhysWake()
			self:DropToFloor()
		end
	end

	function ENT:Use( act, call, t, use )
		if (call:GetBackpack() && call:GetBackpack() == self) then return false end

		net.Start("DZ_Backpacks.OpenGUI")
			net.WriteEntity(self)
			net.WriteTable(self.BackpackItems)
		net.Send(call)
	end

	function ENT:OnVarChanged(name, old, new)
		if (name == "BPOwner") then
			if (new && new:IsValid() && new:IsPlayer()) then
				self:SetPos(new:GetPos())
				self:SetParent(new, 0)
			else
				if (old && old:IsValid() && old:IsPlayer()) then
					self:SetPos(old:GetPos() + ply:GetForward()*100 + Vector(0,0,50))
				end

				self:SetParent(nil)

				self:Respawn()
			end
		end
	end

	function ENT:AddItem(data)
		local bpInfo = (self.GetBPType && self:GetBPType() or false)
		bpInfo = (bpInfo && DZ_Backpacks.Types[bpInfo])

		if (bpInfo) then
			if (table.Count(self.BackpackItems) > (bpInfo.size or 12)) then
				return false
			end
		end

		local has = false

		for i=1,table.Count(self.BackpackItems) do
			if (self.BackpackItems[i].class == data.class) then
				has = i
			end
		end

		if (has) then
			self.BackpackItems[has].amt = self.BackpackItems[has].amt + data.amt
		else
			table.insert(self.BackpackItems, data)
		end

		if (self.GetBPOwner && self:GetBPOwner():IsValid()) then
			DZ_Backpacks.Data:UpdatePlayer(self:GetBPOwner(), {
				type_bp = (self:GetBPType() or "small_backpack"),
				cont_bp = (self.BackpackItems or {}),
			})
		end
	end
end