Added the FirmwareUpdateChecker to Cura - CURA-4224

plugins/FirmwareUpdateChecker/FirmwareUpdateCheckerJob.py

@@ -0,0 +1,79 @@
+# Copyright (c) 2015 Ultimaker B.V.
+# Cura is released under the terms of the AGPLv3 or higher.
+
+from UM.Preferences import Preferences
+from UM.Application import Application
+from UM.Message import Message
+from UM.Logger import Logger
+from UM.Job import Job
+
+import urllib.request
+import codecs
+
+from PyQt5.QtCore import QUrl
+from PyQt5.QtGui import QDesktopServices
+
+
+from UM.i18n import i18nCatalog
+i18n_catalog = i18nCatalog("cura")
+
+
+##  This job checks if there is an update available on the provided URL.
+class FirmwareUpdateCheckerJob(Job):
+    def __init__(self, silent = False, url = None):
+        super().__init__()
+        self.silent = silent
+        self._url = url
+        self._download_url = None  # If an update was found, the download_url will be set to the location of the new version.
+
+    ##  Callback for the message that is spawned when there is a new version.
+    def actionTriggered(self, message, action):
+        if action == "download":
+            if self._download_url is not None:
+                QDesktopServices.openUrl(QUrl(self._download_url))
+
+    def run(self):
+        self._download_url = None  # Reset download ur.
+        if not self._url:
+            Logger.log("e", "Can not check for a new release. URL not set!")
+            return
+
+        Logger.log("i", "Checking for new version of firmware")
+        try:
+            request = urllib.request.Request(self._url)
+            current_version_file = urllib.request.urlopen(request)
+            reader = codecs.getreader("utf-8")
+
+            # Nothing to parse, just get the string
+            # TODO: In the future may be done by parsing a JSON file
+            current_version = reader(current_version_file).readline().rstrip()
+            Logger.log("i", "Reading firmware version: %s" % current_version)
+
+            # If it is the first time the version is checked, the checked_version is None
+            checked_version = Preferences.getInstance().getValue("info/latest_checked_firmware")
+            active_machine = Preferences.getInstance().getValue("cura/active_machine")
+            # If it is not None, then we compare between the checked_version and the current_version
+            # Now we just do that if the active printer is Ultimaker 3 or Ultimaker 3 Extended
+            if ((active_machine == "Ultimaker 3 Extended") or (active_machine == "Ultimaker 3"))\
+                    and ((checked_version is None) or (checked_version != current_version)):
+                message = Message(i18n_catalog.i18nc("@info", "<b>New %s firmware available</b><br/><br/>To ensure that your "
+                                                              "%s is equiped with the latest features it is recommended "
+                                                              "to update the firmware regularly. This can be done on the "
+                                                              "%s (when connected to the network) or via USB."
+                                                     % (active_machine, active_machine, active_machine)))
+                message.addAction("download", i18n_catalog.i18nc("@action:button", "Download"), "[no_icon]", "[no_description]")
+
+                # If we do this in a cool way, the download url should be available in the JSON file
+                self._download_url = "https://ultimaker.com/en/resources/20500-upgrade-firmware"
+                message.actionTriggered.connect(self.actionTriggered)
+                # Sometimes it's shown, sometimes not
+                #message.show()
+                Application.getInstance().showMessage(message)
+
+                Preferences.getInstance().setValue("info/latest_checked_firmware", current_version)
+
+        except Exception as e:
+            Logger.log("w", "Failed to check for new version: %s" % e)
+            if not self.silent:
+                Message(i18n_catalog.i18nc("@info", "Could not access update information.")).show()
+            return