class ActionView::DependencyTracker::ERBTracker

def self.call(name, template)
  new(name, template).dependencies
end

def add_dynamic_dependency(dependencies, dependency)
  if dependency
    dependencies << "#{dependency.pluralize}/#{dependency.singularize}"
  end
end

def add_static_dependency(dependencies, dependency)
  if dependency
    if dependency.include?('/')
      dependencies << dependency
    else
      dependencies << "#{directory}/#{dependency}"
    end
  end
end

def dependencies
  render_dependencies + explicit_dependencies
end

def directory
  name.split("/")[0..-2].join("/")
end

def explicit_dependencies
  source.scan(EXPLICIT_DEPENDENCY).flatten.uniq
end

def initialize(name, template)
  @name, @template = name, template
end

def render_dependencies
  render_dependencies = []
  render_calls = source.split(/\brender\b/).drop(1)
  render_calls.each do |arguments|
    arguments.scan(RENDER_ARGUMENTS) do
      add_dynamic_dependency(render_dependencies, Regexp.last_match[:dynamic])
      add_static_dependency(render_dependencies, Regexp.last_match[:static])
    end
  end
  render_dependencies.uniq
end

def source
  template.source
end