# frozen_string_literal: true

require "json"

module ClashDeckGenerator2
  module Services
    class CardRolesRepository
      ROLES_PATH = File.expand_path("../../config/cards/roles.json", __dir__)

      def all
        @all ||= load_roles
      end

      def cards
        all.fetch("cards", {})
      end

      def roles_for(card_name)
        cards.fetch(card_name, [])
      end

      def has_role?(card_name, role)
        roles_for(card_name).include?(role)
      end

      def meta
        all.fetch("_meta", {})
      end

      private

      def load_roles
        raise "roles.json not found: #{ROLES_PATH}" unless File.exist?(ROLES_PATH)

        parsed = JSON.parse(File.read(ROLES_PATH))

        unless parsed.is_a?(Hash)
          raise "roles.json must contain a JSON object at root"
        end

        unless parsed.key?("cards")
          raise 'roles.json must contain "cards" key'
        end

        cards = parsed["cards"]

        unless cards.is_a?(Hash)
          raise '"cards" must be a JSON object'
        end

        cards.each do |card_name, roles|
          unless card_name.is_a?(String) && !card_name.strip.empty?
            raise "Invalid card name in roles.json: #{card_name.inspect}"
          end

          unless roles.is_a?(Array)
            raise "Roles for #{card_name} must be an array"
          end

          roles.each do |role|
            unless role.is_a?(String) && !role.strip.empty?
              raise "Invalid role for #{card_name}: #{role.inspect}"
            end
          end
        end

        parsed
      end
    end
  end
end