InventoryGuiHandler

game:GetService("StarterGui"):SetCoreGuiEnabled(Enum.CoreGuiType.Backpack, false)

local keys = {
    [1] = Enum.KeyCode.One;
    [2] = Enum.KeyCode.Two;
    [3] = Enum.KeyCode.Three;
    [4] = Enum.KeyCode.Four;
    [5] = Enum.KeyCode.Five;
    [6] = Enum.KeyCode.Six;
    [7] = Enum.KeyCode.Seven;
    [8] = Enum.KeyCode.Eight;
    [9] = Enum.KeyCode.Nine;
}

local uis = game:GetService("UserInputService")

local rs = game:GetService("ReplicatedStorage"):WaitForChild("InventoryReplicatedStorage")
local remotes = rs:WaitForChild("RemoteEvents")

local client = game.Players.LocalPlayer

local hotbar = client:WaitForChild("Hotbar")
local inventory = client:WaitForChild("Inventory")
local equipped = client:WaitForChild("Equipped")

local hotbarGui = script.Parent:WaitForChild("Hotbar"):WaitForChild("SlotsContainer")
local invGui = script.Parent:WaitForChild("Inventory")
invGui.Visible = false
local openInv = script.Parent:WaitForChild("OpenInventory")


function updateHotbar()

    for slotNum, slotVal in pairs(hotbar:GetChildren()) do

        local guiSlot = hotbarGui[slotNum]

        if slotVal.Value then
            guiSlot.ItemName.Visible = true
            guiSlot.ItemName.Text = slotVal.Value.Name

            if string.len(slotVal.Value.TextureId) > 0 then
                guiSlot.ItemViewer.Visible = false
                guiSlot.ItemImage.Visible = true

                guiSlot.ItemImage.Image = slotVal.Value.TextureId
            else
                guiSlot.ItemViewer.Visible = true
                guiSlot.ItemImage.Visible = false

                guiSlot.ItemViewer:ClearAllChildren()

                local vpfModel = Instance.new("Model")

                local copiedTool = slotVal.Value:Clone()
                for __, desc in pairs(copiedTool:GetDescendants()) do
                    if desc:IsA("LocalScript") or desc:IsA("Script") then
                        desc:Destroy()
                    elseif desc:IsA("BasePart") then
                        desc.Parent = vpfModel
                    end
                end
                copiedTool:Destroy()

                local cf, size = vpfModel:GetBoundingBox()

                local primaryPart = Instance.new("Part")
                primaryPart.Transparency = 1
                primaryPart.CFrame = cf
                primaryPart.Parent = vpfModel

                vpfModel.PrimaryPart = primaryPart

                vpfModel:PivotTo(CFrame.new(Vector3.new(0, 0, 0), Vector3.new(0, math.rad(90), math.rad(90))))

                local itemPivot = vpfModel:GetPivot()
                local itemSize = vpfModel:GetExtentsSize()

                local vpfCam = Instance.new("Camera")
                vpfCam.CFrame = CFrame.new(itemPivot.Position + (Vector3.one * itemSize * 0.5), itemPivot.Position)
                guiSlot.ItemViewer.CurrentCamera = vpfCam

                vpfCam.Parent = guiSlot.ItemViewer
                vpfModel.Parent = guiSlot.ItemViewer
            end

        else
            guiSlot.ItemName.Visible = false
            guiSlot.ItemImage.Visible = false
            guiSlot.ItemViewer.Visible = false
        end
    end
end

function updateInventory()

    for _, invItem in pairs(invGui.InventoryScroller:GetChildren()) do
        if invItem:IsA(script.InventoryItem.ClassName) then
            invItem:Destroy()
        end
    end

    for _, toolVal in pairs(inventory:GetChildren()) do

        local tool = toolVal.Value

        local newItem = script.InventoryItem:Clone()
        newItem.ItemName.Text = tool.Name

        if string.len(tool.TextureId) > 0 then
            newItem.ItemViewer.Visible = false
            newItem.ItemImage.Image = tool.TextureId
        else
            newItem.ItemImage.Visible = false

            newItem.ItemViewer:ClearAllChildren()

            local vpfModel = Instance.new("Model")

            local copiedTool = tool:Clone()
            for __, desc in pairs(copiedTool:GetDescendants()) do
                if desc:IsA("LocalScript") or desc:IsA("Script") then
                    desc:Destroy()
                elseif desc:IsA("BasePart") then
                    desc.Parent = vpfModel
                end
            end
            copiedTool:Destroy()

            local cf, size = vpfModel:GetBoundingBox()

            local primaryPart = Instance.new("Part")
            primaryPart.Transparency = 1
            primaryPart.CFrame = cf
            primaryPart.Parent = vpfModel

            vpfModel.PrimaryPart = primaryPart

            vpfModel:PivotTo(CFrame.new(Vector3.new(0, 0, 0), Vector3.new(0, math.rad(90), math.rad(90))))

            local itemPivot = vpfModel:GetPivot()
            local itemSize = vpfModel:GetExtentsSize()

            local vpfCam = Instance.new("Camera")
            vpfCam.CFrame = CFrame.new(itemPivot.Position + (Vector3.one * itemSize * 0.5), itemPivot.Position)
            newItem.ItemViewer.CurrentCamera = vpfCam

            vpfCam.Parent = newItem.ItemViewer
            vpfModel.Parent = newItem.ItemViewer
        end

        newItem.MouseButton1Click:Connect(function()
            remotes.ToHotbar:FireServer(tool)
        end)

        newItem.MouseButton2Click:Connect(function()
            remotes.Drop:FireServer(tool)
        end)

        newItem.Parent = invGui.InventoryScroller
    end
end

function findSelectedSlot()

    for slotNum, slotVal in pairs(hotbar:GetChildren()) do

        local guiSlot = hotbarGui[slotNum]

        if slotVal.Value and slotVal.Value == equipped.Value then
            guiSlot.ImageColor3 = Color3.fromRGB(255, 255, 255)
        else
            guiSlot.ImageColor3 = Color3.fromRGB(218, 218, 218)
        end
    end
end


for slotNum, slotVal in pairs(hotbar:GetChildren()) do

    local newSlot = script:WaitForChild("HotbarItem"):Clone()
    newSlot.Name = slotNum

    if keys[slotNum].Value >= 48 and keys[slotNum].Value <= 57 then
        newSlot.NumberKey.Text = keys[slotNum].Value - 48
    else
        newSlot.NumberKey.Text = string.split(tostring(keys[slotNum]), ".")[3]
    end

    if slotVal.Value then
        newSlot.ItemName.Text = slotVal.Value.Name

        if string.len(slotVal.Value.TextureId) > 0 then
            newSlot.ItemViewer.Visible = false
            newSlot.ItemImage.Image = slotVal.Value.TextureId
        else
            newSlot.ItemImage.Visible = false

            newSlot.ItemViewer:ClearAllChildren()

            local vpfModel = Instance.new("Model")

            local copiedTool = slotVal.Value:Clone()
            for __, desc in pairs(copiedTool:GetDescendants()) do
                if desc:IsA("LocalScript") or desc:IsA("Script") then
                    desc:Destroy()
                elseif desc:IsA("BasePart") then
                    desc.Parent = vpfModel
                end
            end
            copiedTool:Destroy()

            local cf, size = vpfModel:GetBoundingBox()

            local primaryPart = Instance.new("Part")
            primaryPart.Transparency = 1
            primaryPart.CFrame = cf
            primaryPart.Parent = vpfModel

            vpfModel.PrimaryPart = primaryPart

            vpfModel:PivotTo(CFrame.new(Vector3.new(0, 0, 0), Vector3.new(0, math.rad(90), math.rad(90))))

            local itemPivot = vpfModel:GetPivot()
            local itemSize = vpfModel:GetExtentsSize()

            local vpfCam = Instance.new("Camera")
            vpfCam.CFrame = CFrame.new(itemPivot.Position + (Vector3.one * itemSize * 0.5), itemPivot.Position)
            newSlot.ItemViewer.CurrentCamera = vpfCam

            vpfCam.Parent = newSlot.ItemViewer

            vpfModel.Parent = newSlot.ItemViewer
        end

    else
        newSlot.ItemName.Visible = false
        newSlot.ItemImage.Visible = false
        newSlot.ItemViewer.Visible = false
    end

    newSlot.MouseButton1Click:Connect(function()
        local tool = slotVal.Value
        remotes.Equip:FireServer(tool)
    end)

    newSlot.MouseButton2Click:Connect(function()
        local tool = slotVal.Value
        remotes.ToInventory:FireServer(tool)
    end)

    newSlot.Parent = hotbarGui

    slotVal:GetPropertyChangedSignal("Value"):Connect(updateHotbar)
end


updateInventory()
inventory.ChildAdded:Connect(updateInventory)
inventory.ChildRemoved:Connect(updateInventory)


findSelectedSlot()
equipped:GetPropertyChangedSignal("Value"):Connect(findSelectedSlot)


uis.InputBegan:Connect(function(inp, p)

    if p then return end

    if table.find(keys, inp.KeyCode) then

        local slotVal = hotbar[table.find(keys, inp.KeyCode)]
        local tool = slotVal.Value
        remotes.Equip:FireServer(tool)
    end
end)


openInv.MouseButton1Click:Connect(function()
    invGui.Visible = not invGui.Visible
end)