mtimer/system/chat_command.lua

local m = mtimer
local S = m.translator
local fs = m.show_formspec
local cs = minetest.chat_send_player


local command = function (command)
     return minetest.colorize('cyan', '/mtimer '..command..'   ')
end

minetest.register_chatcommand('mtimer', {
    description = S('Configure timer display'),
    params = '<vi/po/co/tz/in/re/te/help>',
    func = function(name, parameters)
        local action = parameters:match('%a+')

        if not minetest.get_player_by_name(name) then return end
        if not action then fs.main_menu(name) end

        if action == 'vi' then fs.set_visibility(name) end
        if action == 'po' then fs.set_position(name) end
        if action == 'co' then fs.set_color(name) end
        if action == 'tz' then fs.timezone_offset(name) end
        if action == 'in' then fs.ingame_time_format(name) end
        if action == 're' then fs.real_time_format(name) end
        if action == 'te' then fs.timer_text(name) end

        if action == 'help' then
            local message = {
                command('vi')..S('Set Visibility'),
                command('po')..S('Set Position'),
                command('co')..S('Set Color'),
                command('tz')..S('Timezone Offset'),
                command('in')..S('Ingame Time Format'),
                command('re')..S('Real-World Time Format'),
                command('te')..S('Set Timer Text'),
                command('  ')..S('Open Main Menu')
            }
            cs(name, table.concat(message, '\n'))
        end
    end
})