#import clr
#clr.AddReference('Manifold.Interop')
#from Manifold.Interop import ComponentType # enum (easier to .TypeName instead)

# *****************************************************************************************************
def Main():
	list_map_layers()

# *****************************************************************************************************
def list_map_layers():
	(map, message) = current_map()
	Application.History.Log(message + '\r\n')
	if map is None:
		Application.MessageBox('Open a map, or select a map in the Project pane\rbefore running the script.', 'Current map')
	else:
		# make list of dict
		layer_list = [{
			'Name': layer.Component.Name,
			'Order': layer.Order,
			'Opacity': layer.Opacity,
			'Visible': layer.Visible,
				# also Clickable, Editable, Selectable, Snappable
			'Path': project_path(layer.Component) 
			} for layer in map.LayerSet]

		# sort list by field
		layer_list.sort(key = lambda item: item['Name'])

		# transform into output list
		output_list = [
			str(item['Order']).rjust(width = len(str(map.LayerSet.Count - 1))) + ' '
			+ '[' + item['Name'] + '] '
			+ str(item['Opacity']) + '%'
			+ ('' if item['Visible'] else ' (hidden)')
			+ (' : root' if item['Path'] == '' else ' : ' + item['Path'])
			for item in layer_list
			]

		# create new comments component (in same folder as map)
		comm = Document.NewComments(map.Name + ' layers', False)
		comm.Folder = map.Folder

		# fill comments
		comm.Text = '[' + map.Name + '] : ' + str(map.LayerSet.Count) + ' layers\r\n' + '\r\n'.join(output_list)
		Application.History.Log('\t-> [' + comm.Name + ']\r\n')

# *****************************************************************************************************
def current_map():
	# Map component open in current window
	# else selected in the Project pane
	# else None
	# (1)
	comp = None
	# first try the active window
	if Application.WindowSet.Count == 0:
		pass
	else:
		comp = Application.WindowSet.ActiveWindow.Component
#		if comp.Type == int(ComponentType.ComponentMap):
		if comp.TypeName == 'Map':
			msg = '[' + comp.Name + '] open in active window'
		else:
			comp = None
	# (2)
	# otherwise try the component selected in the Project pane
	if comp is None:
		name = Application.UserInterface.Panes('Project').ControlSet('TreeViewComponents').Text
		if name == '':
			# no component selected
			pass
		else:
			comp = Document.ComponentSet.Item(name)
#			if comp.Type == int(ComponentType.ComponentMap):
			if comp.TypeName == 'Map':
				msg = '[' + comp.Name + '] selected in Project pane'
			else:
				comp = None
	if comp is None:
		msg = '(No map active or selected)'
	return (comp, msg)

# *****************************************************************************************************
def project_path(comp):
	node = comp
	roots = []
	while node.Owner is not None:
		roots.append(node.Owner)
		node = node.Owner
	while node.Folder is not None:
		roots.append(node.Folder)
		node = node.Folder
	roots.reverse()
	return '.'.join(['[' + root.Name + ']' for root in roots])

# *****************************************************************************************************
Main()