require 'csv'

module Eco
  class CSV < ::CSV

    class << self

      # @return [Eco::CSV::Table]
      def parse(data, **kargs, &block)
        kargs = {headers: true, skip_blanks: true}.merge(kargs)
        out = super(data, **kargs, &block).reject do |row|
          values = row.to_hash.values
          values.all?(&:nil?) || values.map(&:to_s).all?(&:empty?)
        end
        Eco::CSV::Table.new(out)
      end

      # @return [Eco::CSV::Table]
      def read(file, **kargs)
        kargs = {headers: true,  skip_blanks: true}.merge(kargs)

        args = [file].tap do |arg|
          encoding = Eco::API::Common::Session::FileManager.encoding(file)
          #encoding = (encoding != "utf-8")? "#{encoding}|utf-8": encoding
          #arg.push(encoding)
          arg.push("rb:bom|utf-8") if encoding == "bom"
        end

        out = super(*args, **kargs).reject do |row|
          values = row.to_hash.values
          values.all?(&:nil?) || values.map(&:to_s).all?(&:empty?)
        end
        Eco::CSV::Table.new(out)
      end

    end


  end
end

require_relative 'csv/table'