local Players = game:GetService("Players")
local UserInputService = game:GetService("UserInputService")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local RunService = game:GetService("RunService")
local LocalPlayer = Players.LocalPlayer

local BulletHandler = require(ReplicatedStorage.ModuleScripts.GunModules:WaitForChild("BulletHandler"))
local SignalManager = require(ReplicatedStorage:WaitForChild("SignalManager"))
local oldFire = BulletHandler.Fire

local maxDistance = 500
local espMaxDistance = 1000
local isThirdPerson = false
local isSpinning = false
local isAiming = false
local savedRotation = CFrame.new()

local highlights = {}

local function updateESP()
    for _, v in ipairs(Players:GetPlayers()) do
        if v ~= LocalPlayer then
            local char = v.Character
            if char and char:FindFirstChild("Humanoid") and char.Humanoid.Health > 0 then
                local root = char:FindFirstChild("HumanoidRootPart")
                if root then
                    local dist = (root.Position - workspace.CurrentCamera.CFrame.Position).Magnitude
                    local hl = highlights[v]
                    if dist <= espMaxDistance then
                        if not hl then
                            hl = Instance.new("Highlight")
                            hl.Parent = char
                            hl.FillTransparency = 0.5
                            hl.OutlineTransparency = 0
                            highlights[v] = hl
                        end
                        hl.Adornee = char
                        hl.FillColor = v.TeamColor and v.TeamColor.Color or Color3.new(1, 1, 1)
                        hl.OutlineColor = v.TeamColor and v.TeamColor.Color or Color3.new(1, 1, 1)
                        hl.Enabled = true
                    else
                        if hl then
                            hl.Enabled = false
                        end
                    end
                end
            else
                local hl = highlights[v]
                if hl then
                    hl:Destroy()
                    highlights[v] = nil
                end
            end
        end
    end
end

Players.PlayerRemoving:Connect(function(v)
    if highlights[v] then
        highlights[v]:Destroy()
        highlights[v] = nil
    end
end)

local function getTarget()
    local target = nil
    local dist = maxDistance
    local cam = workspace.CurrentCamera
    
    local rayParams = RaycastParams.new()
    rayParams.FilterType = Enum.RaycastFilterType.Exclude
    
    if LocalPlayer.Character then
        rayParams.FilterDescendantsInstances = {LocalPlayer.Character}
    end

    for _, v in ipairs(Players:GetPlayers()) do
        if v ~= LocalPlayer and v.Character and v.Character:FindFirstChild("Humanoid") and v.Character.Humanoid.Health > 0 then
            local head = v.Character:FindFirstChild("Head")
            if head then
                local d = (head.Position - cam.CFrame.Position).Magnitude
                if d < dist then
                    local dir = (head.Position - cam.CFrame.Position).Unit * d
                    local hit = workspace:Raycast(cam.CFrame.Position, dir, rayParams)
                    
                    if not hit or hit.Instance:IsDescendantOf(v.Character) then
                        dist = d
                        target = head
                    end
                end
            end
        end
    end
    
    return target
end

BulletHandler.Fire = function(data)
    local head = getTarget()
    if head and data and data.Origin and data.Misc then
        data.Direction = (head.Position - data.Origin).Unit
        data.Misc.CamCFrame = CFrame.new(data.Misc.CamCFrame.Position, head.Position)
    end
    return oldFire(data)
end

local function updateCameraState(state)
    isThirdPerson = state
    if isThirdPerson then
        LocalPlayer.CameraMode = Enum.CameraMode.Classic
        LocalPlayer.CameraMinZoomDistance = 8
        LocalPlayer.CameraMaxZoomDistance = 400
        UserInputService.MouseBehavior = Enum.MouseBehavior.Default
        SignalManager.Fire("ViewModelVisable", false)
        if LocalPlayer.Character and LocalPlayer.Character:FindFirstChild("Head") then
            LocalPlayer.Character.Head.Anchored = false
        end
		UserInputService.MouseIconEnabled = true
    else
        LocalPlayer.CameraMode = Enum.CameraMode.LockFirstPerson
        LocalPlayer.CameraMinZoomDistance = 0.5
        LocalPlayer.CameraMaxZoomDistance = 0.5
        SignalManager.Fire("ViewModelVisable", true)
		UserInputService.MouseIconEnabled = false
    end
end

UserInputService.InputBegan:Connect(function(input, gp)
    if gp then return end
    
    if input.KeyCode == Enum.KeyCode.C then
        updateCameraState(not isThirdPerson)
    elseif input.KeyCode == Enum.KeyCode.X then
        isSpinning = not isSpinning
    end
end)

LocalPlayer.CharacterAdded:Connect(function()
    updateCameraState(false)
    isSpinning = false
    isAiming = false
end)

RunService.RenderStepped:Connect(function()
    updateESP()

    if isThirdPerson then
        LocalPlayer.CameraMode = Enum.CameraMode.Classic
        LocalPlayer.CameraMinZoomDistance = 8
        LocalPlayer.CameraMaxZoomDistance = 400
    else
        LocalPlayer.CameraMode = Enum.CameraMode.LockFirstPerson
        LocalPlayer.CameraMinZoomDistance = 0.5
        LocalPlayer.CameraMaxZoomDistance = 0.5
        UserInputService.MouseBehavior = Enum.MouseBehavior.LockCenter
    end

    local head = getTarget()
    local char = LocalPlayer.Character
    
    if char and char:FindFirstChild("HumanoidRootPart") and char:FindFirstChild("Humanoid") then
        local hrp = char.HumanoidRootPart
        local hum = char.Humanoid

        if head then
            if not isAiming then
                isAiming = true
                savedRotation = hrp.CFrame.Rotation
                hum.AutoRotate = false
            end
            local targetPos = Vector3.new(head.Position.X, hrp.Position.Y, head.Position.Z)
            hrp.CFrame = hrp.CFrame:Lerp(CFrame.new(hrp.Position, targetPos), 0.25)
        else
            if isAiming then
                hum.AutoRotate = false
                local targetCFrame = CFrame.new(hrp.Position) * savedRotation
                hrp.CFrame = hrp.CFrame:Lerp(targetCFrame, 0.2)
                
                if hrp.CFrame.LookVector:Dot(targetCFrame.LookVector) > 0.9 then
                    isAiming = false
                end
            elseif isSpinning then
                hum.AutoRotate = false
                hrp.CFrame = hrp.CFrame * CFrame.Angles(0, math.rad(35), 0)
            else
                hum.AutoRotate = true
            end
        end
    end
end)

task.spawn(function()
    while task.wait(0.05) do
        if getTarget() then
            SignalManager.Fire("FireWeapon", Enum.UserInputState.Begin)
            task.wait(0.05)
            SignalManager.Fire("FireWeapon", Enum.UserInputState.End)
        end
    end
end)