class PolyrexBuilder

# File lib/polyrex-builder.rb, line 13
def initialize(rows=[], parents: [], summary: {}, 
               rootname: 'items', debug: false)

  @debug = debug
  records = rows.map {|x|  pxify(x, parents) }
  
  summary.merge!({recordx_type: 'polyrex'})
  h = {rootname.to_sym => {summary: summary, records: records }}

  @a = RexleBuilder.new(h, debug: false).to_a

end

# File lib/polyrex-builder.rb, line 26
def to_a()
  @a
end

# File lib/polyrex-builder.rb, line 30
def to_xml()  
  
  doc = Rexle.new(@a)
  schema = PolyrexSchema.new.parse(doc.root.xml).to_schema    
  doc.root.element('summary').add Rexle::Element.new('schema').add_text(schema)
  
  doc.xml pretty: true    
end

# File lib/polyrex-builder.rb, line 41
def pxify(a, parents=[])

  name = parents.length <= 1 ? parents.first : parents.shift

  raw_records = a
  raw_summary = raw_records.first

  h = raw_records.first    
  summary = h.merge({schema: "%s[%s]" % [name, h.keys.join(', ')]})
  
  record = if raw_records[1] then
  

    {
      summary: summary, 
      records: raw_records[1].map{|x| pxify(x,parents.clone) }
    }

  else

    {summary: summary}

  end

  {name => record}
end