From fd1e9b40abe03b96aec678c1dbe88ef0d22592c3 Mon Sep 17 00:00:00 2001
From: Toke Stuart Jepsen <tokejepsen@gmail.com>
Date: Wed, 24 Jun 2020 12:16:44 +0100
Subject: [PATCH] Flag outdated containers on startup and publish.

---
 pype/hosts/photoshop/__init__.py              | 43 ++++++++++++++++++-
 .../global/publish/validate_containers.py     |  2 +-
 2 files changed, 43 insertions(+), 2 deletions(-)

diff --git a/pype/hosts/photoshop/__init__.py b/pype/hosts/photoshop/__init__.py
index 01ed757a8d..564e9c8a05 100644
--- a/pype/hosts/photoshop/__init__.py
+++ b/pype/hosts/photoshop/__init__.py
@@ -1,9 +1,48 @@
 import os
+import sys
 
-from avalon import api
+from avalon import api, io
+from avalon.vendor import Qt
+from pype import lib
 import pyblish.api
 
 
+def check_inventory():
+    if not lib.any_outdated():
+        return
+
+    host = api.registered_host()
+    outdated_containers = []
+    for container in host.ls():
+        representation = container['representation']
+        representation_doc = io.find_one(
+            {
+                "_id": io.ObjectId(representation),
+                "type": "representation"
+            },
+            projection={"parent": True}
+        )
+        if representation_doc and not lib.is_latest(representation_doc):
+            outdated_containers.append(container)
+
+    # Warn about outdated containers.
+    print("Starting new QApplication..")
+    app = Qt.QtWidgets.QApplication(sys.argv)
+
+    message_box = Qt.QtWidgets.QMessageBox()
+    message_box.setIcon(Qt.QtWidgets.QMessageBox.Warning)
+    msg = "There are outdated containers in the scene."
+    message_box.setText(msg)
+    message_box.exec_()
+
+    # Garbage collect QApplication.
+    del app
+
+
+def application_launch():
+    check_inventory()
+
+
 def install():
     print("Installing Pype config...")
 
@@ -27,6 +66,8 @@ def install():
         "instanceToggled", on_pyblish_instance_toggled
     )
 
+    api.on("application.launched", application_launch)
+
 
 def on_pyblish_instance_toggled(instance, old_value, new_value):
     """Toggle layer visibility on instance toggles."""
diff --git a/pype/plugins/global/publish/validate_containers.py b/pype/plugins/global/publish/validate_containers.py
index 44cb5def3c..9a07770aed 100644
--- a/pype/plugins/global/publish/validate_containers.py
+++ b/pype/plugins/global/publish/validate_containers.py
@@ -19,7 +19,7 @@ class ValidateContainers(pyblish.api.ContextPlugin):
 
     label = "Validate Containers"
     order = pyblish.api.ValidatorOrder
-    hosts = ["maya", "houdini", "nuke"]
+    hosts = ["maya", "houdini", "nuke", "photoshop"]
     optional = True
     actions = [ShowInventory]