tabs manager

-- Tab Manager Program
local function listTabs()
    local currentTab = multishell.getCurrent()
    local tabs = {}

    for i = 1, multishell.getCount() do
        local title = multishell.getTitle(i)
        table.insert(tabs, {id = i, title = title})
    end

    return currentTab, tabs
end

local function drawTabs(currentTab, tabs)
    term.clear()
    term.setCursorPos(1, 1)
    print("Tab Manager - Select a tab to switch to it")
    print("========================================")

    for _, tab in ipairs(tabs) do
        if tab.id == currentTab then
            print("-> [" .. tab.id .. "] " .. tab.title .. " (current)")
        else
            print("   [" .. tab.id .. "] " .. tab.title)
        end
    end
end

local function getUserSelection(tabs)
    print("\nEnter the tab number to switch to it (or 'q' to quit): ")
    local input = read()

    if input == 'q' or input == 'Q' then
        return nil
    end

    local tabNumber = tonumber(input)
    for _, tab in ipairs(tabs) do
        if tab.id == tabNumber then
            return tabNumber
        end
    end

    return nil
end

local function main()
    while true do
        local currentTab, tabs = listTabs()
        drawTabs(currentTab, tabs)
        local selection = getUserSelection(tabs)

        if selection then
            multishell.setFocus(selection)
        else
            break
        end
    end

    term.clear()
    term.setCursorPos(1, 1)
end

main()