module Souls
  module Generate
    class << self
      ## Generate Type
      def create_type_head(class_name: "souls")
        file_dir = "./app/graphql/types/"
        FileUtils.mkdir_p(file_dir) unless Dir.exist?(file_dir)
        file_path = "./app/graphql/types/#{class_name}_type.rb"
        File.open(file_path, "w") do |f|
          f.write(<<~TEXT)
            module Types
              class #{class_name.camelize}Type < BaseObject
                implements GraphQL::Types::Relay::Node

          TEXT
        end
      end

      def create_type_params(class_name: "souls")
        file_path = "./app/graphql/types/#{class_name}_type.rb"
        path = "./db/schema.rb"
        @on = false
        File.open(file_path, "a") do |new_line|
          File.open(path, "r") do |f|
            f.each_line.with_index do |line, _i|
              if @on
                new_line.write("\n" && break) if line.include?("end") || line.include?("t.index")
                field = "[String]" if line.include?("array: true")
                type, name = line.split(",")[0].gsub("\"", "").scan(/((?<=t\.).+(?=\s)) (.+)/)[0]
                field ||= type_check(type)
                case name
                when /$*_id\z/
                  new_line.write(
                    "    field :#{name.gsub(
                      '_id',
                      ''
                    )}, Types::#{name.gsub(
                      '_id',
                      ''
                    ).singularize.camelize}Type, null: false\n"
                  )
                else
                  new_line.write("    field :#{name}, #{field}, null: true\n")
                end
              end
              if table_check(line: line, class_name: class_name)
                @on = true
                new_line.write("    global_id_field :id\n")
              end
            end
          end
        end
      end

      def create_type_end(class_name: "souls")
        file_path = "./app/graphql/types/#{class_name}_type.rb"
        File.open(file_path, "a") do |f|
          f.write(<<~TEXT)
              end
            end
          TEXT
        end
        file_path
      end

      def type(class_name: "souls")
        singularized_class_name = class_name.singularize
        file_path = "./app/graphql/types/#{singularized_class_name}_type.rb"
        return "Type already exist! #{file_path}" if File.exist?(file_path)

        create_type_head(class_name: singularized_class_name)
        create_type_params(class_name: singularized_class_name)
        create_type_end(class_name: singularized_class_name)
        puts(Paint % ["Created file! : %{white_text}", :green, { white_text: [file_path.to_s, :white] }])
        file_path
      rescue StandardError => e
        raise(StandardError, e)
      end
    end
  end
end