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module ActiveRecord
  module ConnectionAdapters
    module MySQL
      module ColumnMethods
        def primary_key(name, type = :primary_key, **options)
          options[:auto_increment] = true if type == :bigint && !options.key?(:default)
          super
        end

        def blob(*args, **options)
          args.each { |name| column(name, :blob, options) }
        end

        def json(*args, **options)
          args.each { |name| column(name, :json, options) }
        end

        def unsigned_integer(*args, **options)
          args.each { |name| column(name, :unsigned_integer, options) }
        end

        def unsigned_bigint(*args, **options)
          args.each { |name| column(name, :unsigned_bigint, options) }
        end

        def unsigned_float(*args, **options)
          args.each { |name| column(name, :unsigned_float, options) }
        end

        def unsigned_decimal(*args, **options)
          args.each { |name| column(name, :unsigned_decimal, options) }
        end
      end

      class ColumnDefinition < ActiveRecord::ConnectionAdapters::ColumnDefinition
        attr_accessor :charset, :unsigned
      end

      class TableDefinition < ActiveRecord::ConnectionAdapters::TableDefinition
        include ColumnMethods

        def new_column_definition(name, type, options) # :nodoc:
          column = super
          case column.type
          when :primary_key
            column.type = :integer
            column.auto_increment = true
          when /\Aunsigned_(?<type>.+)\z/
            column.type = $~[:type].to_sym
            column.unsigned = true
          end
          column.unsigned ||= options[:unsigned]
          column.charset = options[:charset]
          column
        end

        private

        def create_column_definition(name, type)
          MySQL::ColumnDefinition.new(name, type)
        end
      end

      class Table < ActiveRecord::ConnectionAdapters::Table
        include ColumnMethods
      end
    end
  end
end