Number the printers following the order of IP addresses in user prefe…

…rences.

src/MPSM2NetworkedPrinterOutputDevice.py

@@ -63,14 +63,6 @@ def _build_printer_conf_model() -> PrinterConfigurationModel:
 class MPSM2NetworkedPrinterOutputDevice(NetworkedPrinterOutputDevice):
   """Represents a networked OutputDevice for Monoprice Select Mini V2
   printers."""
-  META_NETWORK_KEY = 'mpsm2_network_key'
-  MPSM2_PROPERTIES = {
-      b'name': b'Monoprice Select Mini V2',
-      b'machine': b'Malyan M200',
-      b'manual': b'true',
-      b'printer_type': b'monoprice_select_mini_v2',
-      b'firmware_version': b'Unknown',
-  }
   MAX_TARGET_HOTEND_TEMPERATURE = 260  # celsius
   MAX_TARGET_BED_TEMPERATURE = 85  # celsius
 
@@ -82,19 +74,28 @@ class MPSM2NetworkedPrinterOutputDevice(NetworkedPrinterOutputDevice):
   hasTargetHotendInProgressChanged = pyqtSignal()
   hasTargetBedInProgressChanged = pyqtSignal()
 
-  def __init__(self, device_id: str, address: str, parent=None) -> None:
+  def __init__(self, device_id: str, address: str, instance_number=1,
+               parent=None) -> None:
     """Constructor
 
     Args:
       device_id: 'manual:<ip_address>'
       address: IP address, for example '192.168.0.70'
     """
-    MPSM2NetworkedPrinterOutputDevice.MPSM2_PROPERTIES[b'address'] \
-      = address.encode('utf-8')
+    device_name = 'Monoprice Select Mini V2{}'.format(
+        ' #{}'.format(instance_number) if instance_number > 1 else '')
+    mpsm2_properties = {
+        b'name': device_name.encode('utf-8'),
+        b'machine': b'Malyan M200',
+        b'manual': b'true',
+        b'printer_type': b'monoprice_select_mini_v2',
+        b'firmware_version': b'Unknown',
+        b'address': address.encode('utf-8'),
+    }
     super().__init__(
         device_id=device_id,
         address=address,
-        properties=MPSM2NetworkedPrinterOutputDevice.MPSM2_PROPERTIES,
+        properties=mpsm2_properties,
         connection_type=ConnectionType.NetworkConnection,
         parent=parent)
     self._printer_output_controller = MPSM2OutputController(self)

src/Network/DeviceManager.py

@@ -138,8 +138,14 @@ def _on_printer_status_response(
 
     Logger.log('d', 'Received response from printer on address %s: %s.',
                address, response)
+    self._store_manual_address(address)
+    instance_number = 1
+    try:
+      instance_number = self._get_stored_manual_addresses().index(address) + 1
+    except ValueError:
+      Logger.log('e', 'Could not find address %s in user preferences', address)
     device = MPSM2NetworkedPrinterOutputDevice(
-        DeviceManager._get_device_id(address), address)
+        DeviceManager._get_device_id(address), address, instance_number)
     device.onPrinterUpload.connect(self.onPrinterUpload)
     device.update_printer_status(response)
     discovered_printers_model = \
@@ -155,7 +161,6 @@ def _on_printer_status_response(
     self._discovered_devices[device.getId()] = device
     self.discoveredDevicesChanged.emit()
     self.connect_to_active_machine()
-    self._store_manual_address(address)
     if callback is not None:
       CuraApplication.getInstance().callLater(callback, True, address)
 
@@ -177,7 +182,9 @@ def _create_machine(self, device_id: str) -> None:
       return
 
     if self._machines.get(device_id) is None:
-      new_machine = CuraStackBuilder.createMachine(device.name,
+      machine_name = device.name if len(self._machines) == 0 \
+        else device.name + '#{}'.format(len(self._machines) + 1)
+      new_machine = CuraStackBuilder.createMachine(machine_name,
                                                    device.printerType)
       if not new_machine:
         Logger.log('e', 'Failed to create a new machine.')

src/Network/PrinterHeartbeat.py

@@ -2,7 +2,6 @@
 Copyright 2020 Luc Rubio <[email protected]>
 Plugin is licensed under the GNU Lesser General Public License v3.0.
 """
-import socket
 import time
 from http.client import HTTPConnection