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+# Code Server app user-facing configuration form file (generic sub-app)
+# This config file is both an actual configuration file for an actual sample 
+# application, and a starting point for configuring a new sub-app. To make a 
+# custom application launch for a course, make a copy of this file in the same
+# folder and customize the form config to your liking. There are notes along
+# the way to help you understand what options you can make configurable to users.
+# See the docs page from Open OnDemand for more details:
+# https://osc.github.io/ood-documentation/develop/how-tos/app-development/interactive/form.html
+<%-
+# Specify admin groups by the full name of the group in the production HKey environment.
+adminGroups = [
+  "ondemand-admins-1025174" # HUIT OOD admin group, prod environment
+]
+# Specify course groups by Canvas course ID, which you can find in a url:
+# canvas.harvard.edu/courses/000000
+enabledGroups = [
+  # Cannot have multiple enabled groups if a spack installation in the course 
+  # shared folder is in use. This is because the course installation uses the 
+  # course shared folder, which is not accessible to users outside of that 
+  # course.
+  "170782"
+]
+
+def arrays_have_common_element(array1, array2)
+  # Use the `&` operator to get the intersection of the two arrays
+  # If the intersection is not empty, return true, otherwise false
+  !(array1 & array2).empty?
+end
+
+userGroups = OodSupport::User.new.groups.sort_by(&:id).map(&:name)
+# First check if the user is in an admin group
+if arrays_have_common_element(userGroups, adminGroups)
+  cluster="*"
+else
+  # If the user is not in an admin group, check if they're in an authorized Canvas group
+  userCanvasGroups = userGroups.flat_map{ |str| str.scan(/^canvas(\d+)-\d+/) }.flatten
+
+  # Check if the groups that the user is in match any of the courses that should
+  # have access to this app.
+
+  if arrays_have_common_element(userCanvasGroups, enabledGroups)
+    cluster="*"
+  else
+    cluster="disable_this_app"
+  end
+end
+-%>
+---
+title: Code Server - APPHY 275
+cluster: "<%= cluster %>"
+cacheable: false
+
+# Form attributes that will be presented to the user and available to the 
+# scripts that launch the app. Think of this as initializing variables for use 
+# in the attributes section as needed.
+form:
+  - bc_num_hours
+  - bc_queue
+  - custom_num_cores
+
+# Customize how form variables appear to users. This is also where you can set 
+# a static value for a variable, in which case it will not be visible to users.
+attributes:
+  # How long will the job run for? Configure min, max, and step to set limits 
+  # on how long app sessions can run.
+  bc_num_hours:
+    value: 2
+    min: 1
+    max: 6  # 6 hours max
+    step: 1
+
+  # Which queue to submit to. Usually `general` is the best choice, unless this 
+  # app is configured for a specific EC2 instance type, like an instance type 
+  # with GPU resources.
+  bc_queue: "general"
+  custom_num_cores:
+    widget: "number_field"
+    label: "Number of CPUs"
+    value: 1
+    min: 1
+    max: 4
+    step: 1