--  CHENMENUS · SHELL EDITION

local dui, isOpen, rainbowSent, Render = nil, false, nil, nil
local welcomeShown = false
local BANNER_URL  = ""
local AVATAR_URL  = ""
local AUTHOR_NAME = "Chen"
local VERSION_TAG = "V2.0"

--  1. 基础工具函数
local function Safe(fn, ...)
    if type(fn) ~= "function" then return nil end
    local ok, a, b, c = pcall(fn, ...)
    if not ok then return nil end
    return a, b, c
end

local function ValidEntity(e)
    return e ~= nil and type(e) == "number" and e ~= 0 and DoesEntityExist(e)
end

local function ValidVehicle(v)
    return ValidEntity(v)
end

local function Clamp(v, mn, mx)
    if v < mn then return mn end
    if v > mx then return mx end
    return v
end

local function SafeWait(ms)
    Citizen.Wait(ms or 0)
end

local function LoadModelSafe(model)
    if type(model) ~= "number" then return false end
    RequestModel(model)
    local t = 0
    while not HasModelLoaded(model) and t < 200 do
        Wait(10); t = t + 1
    end
    return HasModelLoaded(model)
end

--  2. 全局状态表
local features = {
    -- 自我
    godmode = false, invisible = false, stamina = false, fastrun = false, superjump = false,
    noragdoll = false, nocriticals = false, infoxygen = false, nightvision = false, thermal = false,
    armorlock = false, nofalldmg = false, fireproof = false, expproof = false, dmgreduce = false,
    -- 武器
    infammo = false, infclip = false, rapidfire = false, norecoil = false, onehitkill = false,
    explosive = false, teleportbullet = false, firebullet = false,
    -- 载具
    vehgod = false, vehinvisible = false, vehrepair = false, vehboost = false,
    underwater = false, vehbounce = false, rocketveh = false, vehnoclip = false,
    -- 视觉 / ESP
    esp = false, espid = false, espname = false, espdist = false, espskeleton = false, espbox = false,
    playerblips = false, alwaysbright = false, norain = false, noclouds = false, snowweather = false,
    -- 菜单外观
    rainbowmenu = false, chenbg = true, floatmenu = true,
    -- 瞄准
    aimbot = false, aimhead = true, aimchest = false, showfov = false,
    aimwallbang = false, aimnospread = false, aimfast = false,
    -- 其他
    ghostmodel = false, spectating = false, freecam = false, tx_noclip = false,
    -- 数值
    fovsize = 140, aimdist = 300,
}

local bypass = {
    screenshot = false,
    log        = false,
    anticheat  = false,
    blip       = false,
    fiveguard  = false,
    electronac = false,
    obfuscate  = false,
}

--  3. 导航 / 菜单状态
local nav = {
    page           = "main",
    cat            = 1,
    tab            = 1,
    pos            = 1,
    players        = {},
    selectedPlayer = nil,
    playerReturnPos = 1,
    currentItems   = {},
}

local selectorState       = { weaponsAll = 1 }
local GhostPed, NPCPed    = { ped = nil }, { ped = nil }
local SaveLoc             = nil
local ManualScan          = { inputActive = false, targetResource = nil, triggers = {}, scanLog = {}, lastInput = "" }

--  4. 通知 / 日志 / 输入
function ShowNotification(text)
    Safe(function()
        if MachoMenuNotification then
            MachoMenuNotification("Chen Menus", text)
        else
            print("[CHENMENUS] " .. text)
        end
    end)
    if dui and dui ~= 0 and isOpen then
        Safe(function()
            MachoSendDuiMessage(dui, json.encode({ type = "notify", text = text }))
        end)
    end
end

function TraceLine(msg)
    Safe(function() print("[CHENMENUS] " .. tostring(msg)) end)
end

local _inputEntryAdded = false
function PromptTextInput(title, default, callback)
    if ManualScan.inputActive then return end
    ManualScan.inputActive = true

    pcall(function()
        if not _inputEntryAdded then
            AddTextEntry("CHEN_INPUT_LABEL", "Input")
            _inputEntryAdded = true
        end
        AddTextEntry("CHEN_INPUT_LABEL", title or "Input")
    end)

    DisplayOnscreenKeyboard(1, "CHEN_INPUT_LABEL", "", default or "", "", "", "", 200)

    CreateThread(function()
        local ticks = 0
        while ticks < 1800 do
            Wait(0); ticks = ticks + 1
            local status = UpdateOnscreenKeyboard()
            if status == 1 then
                local result = GetOnscreenKeyboardResult() or ""
                ManualScan.inputActive = false
                if callback then Safe(callback, result) end
                break
            elseif status == 2 or status == 3 then
                ManualScan.inputActive = false
                if callback then Safe(callback, nil) end
                break
            end
        end
        ManualScan.inputActive = false
    end)
end

--  5. 玩家缓存
local PlayerCache = { list = {}, time = 0 }

function GetPlayers()
    local list, seen = {}, {}
    local ok, actives = pcall(GetActivePlayers)
    if ok and actives then
        for _, p in ipairs(actives) do
            if not seen[p] then seen[p] = true; list[#list + 1] = p end
        end
    end
    for i = 0, 255 do
        if not seen[i] and NetworkIsPlayerActive(i) then
            seen[i] = true; list[#list + 1] = i
        end
    end
    return list
end

function GetCachedPlayers()
    local now = GetGameTimer()
    if now - PlayerCache.time > 1000 then
        PlayerCache.list = GetPlayers()
        PlayerCache.time = now
    end
    return PlayerCache.list
end

function RefreshPlayerList()
    local list, me = {}, PlayerId()
    local myPed = PlayerPedId()
    if not ValidEntity(myPed) then nav.players = list; return end

    local myCoords = GetEntityCoords(myPed)
    local seen = {}
    local ok, actives = pcall(GetActivePlayers)
    if ok and actives then for _, p in ipairs(actives) do seen[p] = true end end
    for i = 0, 255 do if NetworkIsPlayerActive(i) then seen[i] = true end end

    for p in pairs(seen) do
        if p ~= me then
            local ped = GetPlayerPed(p)
            if ValidEntity(ped) then
                local c    = GetEntityCoords(ped)
                local dist = #(myCoords - c)
                local hp   = Clamp(GetEntityHealth(ped) - 100, 0, 100)
                list[#list + 1] = {
                    id = p, sid = GetPlayerServerId(p),
                    name = GetPlayerName(p) or "Unknown",
                    dist = dist, hp = hp, coords = c,
                }
            end
        end
    end

    table.sort(list, function(a, b) return a.dist < b.dist end)
    nav.players = list

    if nav.pos > #list then nav.pos = math.max(1, #list) end
    if nav.pos < 1 then nav.pos = 1 end
end

function GetClosestPlayer()
    local closest, best = nil, 999999
    local myPed = PlayerPedId()
    if not ValidEntity(myPed) then return nil end
    local my = GetEntityCoords(myPed)
    for _, p in ipairs(GetCachedPlayers()) do
        if p ~= PlayerId() then
            local ped = GetPlayerPed(p)
            if ValidEntity(ped) then
                local d = #(my - GetEntityCoords(ped))
                if d < best then best = d; closest = p end
            end
        end
    end
    return closest
end

function RotationToDirection(r)
    local rz, rx = math.rad(r.z), math.rad(r.x)
    return vector3(
        -math.sin(rz) * math.abs(math.cos(rx)),
         math.cos(rz) * math.abs(math.cos(rx)),
         math.sin(rx)
    )
end

--  6. 资源缓存
local _resCache, _lookupCache = { list = {}, time = 0 }, { map = {}, time = 0 }

function GetResourceNames()
    local now = GetGameTimer()
    if now - _resCache.time < 5000 and #_resCache.list > 0 then
        return _resCache.list
    end
    local list = {}
    local n = Safe(GetNumResources) or 0
    for i = 0, n - 1 do
        local r = Safe(GetResourceByFindIndex, i)
        if r and r ~= "" then list[#list + 1] = r end
    end
    _resCache.list = list
    _resCache.time = now
    return list
end

function BuildResourceLookup()
    local now = GetGameTimer()
    if now - _lookupCache.time < 5000 and next(_lookupCache.map) then
        return _lookupCache.map
    end
    local lookup = {}
    for _, r in ipairs(GetResourceNames()) do
        lookup[string.lower(r)] = r
    end
    _lookupCache.map  = lookup
    _lookupCache.time = now
    return lookup
end

--  7. 菜单开关

function OpenMenu()
    if isOpen then return end
    isOpen = true
    nav.page = "main"
    nav.pos  = 1

    -- TODO: 创建 DUI / 显示界面
    -- dui = Safe(MachoCreateDui, BANNER_URL, 1280, 720)
    -- Safe(MachoShowDui, dui)

    if not welcomeShown then
        welcomeShown = true
        ShowNotification(("欢迎使用 %s %s"):format(AUTHOR_NAME, VERSION_TAG))
    end
end

function CloseMenu()
    if not isOpen then return end
    isOpen = false

    -- TODO: 隐藏 / 销毁 DUI
    -- if dui and dui ~= 0 then Safe(MachoHideDui, dui) end
end

function ToggleMenu()
    if isOpen then CloseMenu() else OpenMenu() end
end

--  8. 菜单渲染主循环
CreateThread(function()
    while true do
        local sleep = 500
        if isOpen and dui and dui ~= 0 then
            sleep = 0
            Safe(function()
                if Render then Render() end
                -- TODO: 读取输入 / 更新 nav / 推送 DUI 数据
            end)
        end
        Wait(sleep)
    end
end)

--  9. 功能接口占位
-- 每个功能只留一个空函数，方便后续逐个填充。

-- 自我
function ToggleGodmode()      features.godmode = not features.godmode end
function ToggleInvisible()    features.invisible = not features.invisible end
function ToggleFastRun()      features.fastrun = not features.fastrun end
function ToggleSuperJump()    features.superjump = not features.superjump end
function ToggleNoRagdoll()    features.noragdoll = not features.noragdoll end

-- 武器
function ToggleInfAmmo()      features.infammo = not features.infammo end
function ToggleInfClip()      features.infclip = not features.infclip end
function ToggleRapidFire()    features.rapidfire = not features.rapidfire end
function ToggleNoRecoil()     features.norecoil = not features.norecoil end
function ToggleOneHitKill()   features.onehitkill = not features.onehitkill end

-- 载具
function ToggleVehGod()       features.vehgod = not features.vehgod end
function ToggleVehRepair()    features.vehrepair = not features.vehrepair end
function ToggleVehBoost()     features.vehboost = not features.vehboost end
function ToggleVehNoClip()    features.vehnoclip = not features.vehnoclip end

-- 视觉 / ESP
function ToggleESP()          features.esp = not features.esp end
function ToggleESPBox()       features.espbox = not features.espbox end
function ToggleESPSkeleton()  features.espskeleton = not features.espskeleton end
function TogglePlayerBlips()  features.playerblips = not features.playerblips end

-- 瞄准
function ToggleAimbot()       features.aimbot = not features.aimbot end
function ToggleAimHead()      features.aimhead = true;  features.aimchest = false end
function ToggleAimChest()     features.aimchest = true; features.aimhead  = false end

-- 其他
function ToggleNoClip()       features.tx_noclip = not features.tx_noclip end
function ToggleFreecam()      features.freecam = not features.freecam end
function ToggleSpectate()     features.spectating = not features.spectating end

-- 绕过类（仅状态位，不做实现）
function ToggleBypassScreenshot() bypass.screenshot = not bypass.screenshot end
function ToggleBypassLog()        bypass.log        = not bypass.log        end
function ToggleBypassAnticheat()  bypass.anticheat  = not bypass.anticheat  end
function ToggleBypassBlip()       bypass.blip       = not bypass.blip       end
function ToggleBypassFiveGuard()  bypass.fiveguard  = not bypass.fiveguard  end
function ToggleBypassElectronAC() bypass.electronac = not bypass.electronac end
function ToggleObfuscateEvents()  bypass.obfuscate  = not bypass.obfuscate  end

-- 框架 / 资源扫描
function DetectFramework()        return "any" end
function DetectAntiCheat()        return {}    end
function IdentifyServerAC()       return { name = "None" } end
function ScanAntiCheat()          ShowNotification("TODO: ScanAntiCheat")    end
function ScanTriggersFromAllFiles() ShowNotification("TODO: Trigger Scan")   end
function ScanServerItems()        return {} end
function ScanServerWeapons()      return {} end
function ScanServerVehicles()     return {} end
function ScanTargetResource(res)  ShowNotification("TODO: Scan " .. tostring(res)) end

-- 停止 / 恢复类
function StopAntiCheat()          ShowNotification("TODO: StopAntiCheat")    end
function RestoreAntiCheat()       ShowNotification("TODO: RestoreAntiCheat") end
function ACStopStatus()           ShowNotification("TODO: ACStopStatus")     end
function TrollAntiCheat()         ShowNotification("TODO: TrollAntiCheat")   end
function StopTrollAntiCheat()     ShowNotification("TODO: StopTrollAC")      end
function ACTrollStatus()          ShowNotification("TODO: ACTrollStatus")    end
function TrollFiveGuard()         ShowNotification("TODO: TrollFiveGuard")   end
function StopTrollFiveGuard()     ShowNotification("TODO: StopTrollFG")      end
function FGTrollStatus()          ShowNotification("TODO: FGTrollStatus")    end

-- 10. 指令 / 快捷键
RegisterCommand("chenmenu", function()
    ToggleMenu()
end, false)

RegisterKeyMapping("chenmenu", "打开 Chen 菜单", "keyboard", "F5")

AddEventHandler("onResourceStop", function(res)
    if res == GetCurrentResourceName() then
        CloseMenu()
    end
end)

exports("OpenMenu",  OpenMenu)
exports("CloseMenu", CloseMenu)
exports("ToggleMenu", ToggleMenu)
exports("GetFeatures", function() return features end)
exports("GetBypass",   function() return bypass   end)
exports("GetNav",      function() return nav      end)