require_relative 'operation_object.rb'
module Praxis
  module Docs
    module OpenApi
      class PathsObject
        # https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#paths-object
        attr_reader :resources, :paths
        def initialize(resources:)
          @resources = resources
          # A hash with keys of paths, and values of hash
          # where the subhash has verb keys and path_items as values
          # {
          #   "/pets": {
          #       "get": {...},
          #       "post": { ...}
          #   "/humans": {
          #       "get": {...},
          @paths = Hash.new {|h,k| h[k] = {} }
        end


        def dump
          resources.each do |resource|
            compute_resource_paths( resource )
          end
          paths
        end

        def compute_resource_paths( resource )
          id = resource.id
          # fill in the paths hash with a key for each path for each action/route
          resource.actions.each do |action_name, action|
            params_example =  action.params ? action.params.example(nil) : nil
            urls = action.route.collect do |route|
              ActionDefinition.url_description(route: route, params: action.params, params_example: params_example)
            end.compact
            urls.each do |url|
              verb = url[:verb].downcase
              templetized_path = OpenApiGenerator.templatize_url(url[:path])
              path_entry = paths[templetized_path]
              # Let's fill in verb stuff within the working hash
              raise "VERB #{_verb} already defined for #{id}!?!?!" if path_entry[verb]
              
              action_uid = "action-#{action_name}-#{id}"
              # Add a tag matching the resource name (hoping all actions of a resource are grouped)
              action_tags = [resource.display_name]
              path_entry[verb] = OperationObject.new( id: action_uid, url: url, action: action, tags: action_tags).dump
            end
          end
          # For each path, we can further annotate with 
          # servers
          # parameters 
          # But we don't have that concept in praxis
        end
      end
    end
  end
end