module React
  
  class TopLevelRailsComponent
    
    include React::Component
    
    def self.search_path
      @search_path ||= [Module]
    end
    
    export_component
    
    required_param :component_name
    required_param :controller
    required_param :render_params
    
    backtrace :on
    
    def render
      paths_searched = []
      if component_name.start_with? "::"
        paths_searched << component_name.gsub("::","")
        component = component_name.gsub("::","").split("::").inject(Module) { |scope, next_const| scope.const_get(next_const) } rescue nil
        return present component, render_params if component and component.method_defined? :render
      else
        self.class.search_path.each do |path|
          # try each path + controller + component_name
          paths_searched << "#{path.name + '::' unless path == Module}#{controller}::#{component_name}"
          component = "#{controller}::#{component_name}".split("::").inject(path) { |scope, next_const| scope.const_get(next_const) } rescue nil
          return present component, render_params if component and component.method_defined? :render
        end
        self.class.search_path.each do |path|
          # then try each path + component_name
          paths_searched << "#{path.name + '::' unless path == Module}#{component_name}"
          component = "#{component_name}".split("::").inject(path) { |scope, next_const| scope.const_get(next_const) } rescue nil
          return present component, render_params if component and component.method_defined? :render
        end
      end
      raise "Could not find component class '#{component_name}' for controller '#{controller}' in any component directory. Tried [#{paths_searched.join(", ")}]"
    end
    
  end
  
end

class Module
  
  def add_to_react_search_path(replace_search_path = nil)
    if replace_search_path
      React::TopLevelRailsComponent.search_path = [self]
    elsif !React::TopLevelRailsComponent.search_path.include? self
      React::TopLevelRailsComponent.search_path << self
    end
  end
  
end

module Components
  add_to_react_search_path
end