--
-- net_check.lua
--
-- Lists each wired modem on this computer and the peripherals on ITS network.
-- For pushItems to move items between two things (barrel -> port), they must
-- appear under the SAME modem here. If the models barrel and the data center
-- ports show up under DIFFERENT modems, they're on separate networks - that's
-- the "Target does not exist" error.
--
--   net_check
--

print("Wired networks this computer can see:")
print(string.rep("=", 42))

local found_modem = false
for _, name in ipairs(peripheral.getNames()) do
    if peripheral.getType(name) == "modem" then
        local ok, wireless = pcall(peripheral.call, name, "isWireless")
        if ok and not wireless then
            found_modem = true
            print("MODEM on '" .. name .. "':")
            local okn, names = pcall(peripheral.call, name, "getNamesRemote")
            if okn and names then
                if #names == 0 then print("   (nothing on this network)") end
                for _, n in ipairs(names) do print("   " .. n) end
            else
                print("   (getNamesRemote failed)")
            end
            print(string.rep("-", 42))
        end
    end
end

if not found_modem then
    print("No wired modems on this computer.")
end
print("")
print("The models barrel + all IO ports must be under ONE modem.")