Key Guard: Confirm Dangerous Shortcuts

-- rebind: min_sdk=0.1.0
-- rebind: name=Key Guard

local cfg = UI.Schema({
    enabled = UI.Toggle(true, { label = "Enable Key Guard" }),
    confirmation_time = UI.Slider(2000, {
        min = 500,
        max = 5000,
        step = 100,
        suffix = "ms",
        label = "Confirmation Window",
        group = "Settings",
    }),
})

-- Define dangerous shortcuts that require confirmation
local dangerous_keys = {
    ["LCtrl+LShift+Delete"] = "Permanent Delete",
    ["LCtrl+W"] = "Close Tab/Window",
    ["LAlt+F4"] = "Close Application",
    ["LCtrl+LShift+Esc"] = "Task Manager",
    ["LWin+D"] = "Show Desktop",
}

local pending_action = nil
local pending_timer = nil

local function clearPending()
    if pending_timer and pending_timer:IsRunning() then
        pending_timer:Cancel()
    end
    pending_action = nil
    pending_timer = nil
end

function OnDown(key)
    if not cfg.enabled then
        return true
    end

    local danger = dangerous_keys[key:upper()]
    if not danger then
        clearPending()
        return true
    end

    -- If this is a repeat of the pending action within the window, allow it
    if pending_action == key then
        UI.Notify(danger .. " - Confirmed!", "success")
        clearPending()
        return true -- pass through
    end

    -- New dangerous key pressed
    clearPending()
    pending_action = key
    UI.Notify(danger .. " - Press again to confirm", "warning")

    -- Set a timer to clear the pending state
    pending_timer = Timer.After(cfg.confirmation_time, function()
        if pending_action == key then
            UI.Notify(danger .. " - Confirmation expired", "info")
            clearPending()
        end
    end)

    return false -- block the first attempt
end

function OnStop()
    clearPending()
end

function OnBlur()
    clearPending()
end