class Files

parameter　selection　Select

The selection to visualize.

returns　String

The generated Mermaid diagram.

def process(selection)
	require "build/graph/walker"
	require "build/graph/visualization"
	
	context = selection.context
	chain = selection.chain
	environment = context.configuration.environment
	
	# Build the controller to get the root nodes
	controller = ::Build::Controller.build(limit: 1) do |builder|
		builder.add_chain(chain, [], environment)
	end
	
	# Create a process group for task execution
	group = ::Process::Group.new
	
	# Create a walker that traverses without building
	walker = ::Build::Graph::Walker.new do |walker, node, parent_task = nil|
		task_class = node.task_class(parent_task) || ::Build::Graph::Task
		task = task_class.new(walker, node, group)
		
		# Use traverse instead of visit to skip building:
		task.traverse
	end
	
	# Populate the walker by traversing from the root nodes
	walker.update(controller.nodes)
	
	# Generate the Mermaid diagram
	visualization = ::Build::Graph::Visualization.new
	diagram = visualization.generate(walker)
	
	if output_path = @options[:output_path]
		File.write(output_path, diagram)
	else
		$stdout.puts diagram
	end
	
	return diagram
end