-- @ bakers

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local ServerStorage = game:GetService("ServerStorage")

local Players = game:GetService("Players")

local Network = ReplicatedStorage.Network
local Assets = ReplicatedStorage.Assets

local Module, Modules = {}, {}

--

local Player = Players.LocalPlayer

local Connections = {}

-- all interactable objects
-- used for raycast whitelist
local Interactables = workspace.Interactables:GetDescendants()

-- distance from interactable item
local Distance = 3

local UI

local Playing, currentInteraction

local function CreateRegion3From(Position, Size)
	local SizeOffset = Size/2
	local Point1 = Position - SizeOffset
	local Point2 = Position + SizeOffset
	return Region3.new(Point1, Point2)
end

local function cancelCurrentInteraction()
	UI:Destroy()
	currentInteraction = nil
	Playing = false
end

local function cancelConnections()
	for _,Connection in pairs(Connections) do
		Connection:Disconnect()
	end
end

local function Keyboard(Input, Down, Target)

	if (not Target) then return end

	if (Input == Enum.KeyCode.E) then
		if (Down) then

			if (Target.InUse.Value) then
				Modules.GFX:Glow(UI.Body, {
					Size = UDim2.new(0, UI.AbsoluteSize.X, 0, UI.AbsoluteSize.Y);
					Position = UDim2.new(0, UI.AbsolutePosition.X, 0, UI.AbsolutePosition.Y);
					BackgroundColor3 = Color3.fromRGB(195, 0, 0)
				})
				return
			end

			Modules[Target.Name]:Use(Target)

			-- fill bar
			UI.Body.Fill:TweenSize(UDim2.new(1, 0, 1, 0), "Out", "Linear", Target.Interactable.Value, true, function(Status)
				if (Status == Enum.TweenStatus.Completed) then
					Modules[Target.Name]:Used(Target, true)
					cancelCurrentInteraction()
				end
			end)
		else
			-- empty bar
			UI.Body.Fill:TweenSize(UDim2.new(0, 0, 1, 0), "Out", "Linear", .5, true, function(Status)
				if (Status == Enum.TweenStatus.Completed) then
					Modules[Target.Name]:Used(Target, false)
					cancelCurrentInteraction()
				end
			end)
		end
	end
end

function Module:Run()

	local Character = Player.Character

	local Region = CreateRegion3From(Character.HumanoidRootPart.Position, Vector3.new(Distance, Distance, Distance))

	local Parts = workspace:FindPartsInRegion3WithWhiteList(Region, Interactables)
	local Part = Parts[1]

	if (Part) then
		if (not Part:FindFirstChild("Interactable")) then return end
		if (Playing) then return end
		if (Part == currentInteraction) then
			return
		else
			cancelConnections()
			currentInteraction = Part
			Playing = true
		end

		if (UI) then
			UI:Destroy()
		end

		UI = Assets.Interface.Billboard.Interact:Clone()
		UI.Parent = currentInteraction

		-- detect whether the user is holding 'e'
		Connections.Input = Network.Bindables.Events.Player.Keyboard.Event:connect(function(Input, Down)
			Keyboard(Input, Down, currentInteraction)
		end)
	else
		cancelConnections()
		if (currentInteraction) then
			cancelCurrentInteraction()
		end
	end
end

function Module.Initialise(...)
	Modules = ...
end

return Module