class API2PDF

# File lib/api2pdf.rb, line 35
def export(arg_hash)
  default_param = {
    :heading        => nil,
    :file_name      => "#{Time.now}",
    :page_layout    => :portrait,
    :page_size      => "LETTER",
    :columns        => 1
  }
  arg_hash = default_param.merge(arg_hash)
  @safe_file_name = "#{arg_hash[:file_name].gsub(/[^0-9A-Za-z.\-]/, '_').gsub('.','')}.pdf"

  @fetch = HTTParty.get("#{arg_hash[:url]}")
  Prawn::Document.generate(@safe_file_name, arg_hash) do |pdf|
    # PDF headings
    if (!arg_hash[:heading].nil?)
      pdf.pad_bottom(20) { pdf.text "#{arg_hash[:heading]}", size: 20, align: :center, style: :bold }
    end
    # PDF body
    pdf.column_box([0, pdf.cursor], :columns => arg_hash[:columns], :width => pdf.bounds.width) do
      @fetch.each do |key, value|
        if (!value.nil?)
          pdf.pad_bottom(5) { titlize(pdf, key) }
          pdf.indent(20) { pdf_body_print(pdf, value) }
        end
      end
    end
  end
end

# File lib/api2pdf.rb, line 13
def pdf_body_print(pdf, obj)
  # FIELD VALUE CAN BE A STRING, HASH, ARRAY OF STRING, HASH, ETC
  case obj.class.to_s
  when "Array"
    obj.each_with_index { |ele, index| pdf_body_print(pdf, ele) }
  when "Hash"
    obj.each do |key, value|
      case value.class.to_s
      when "Array"
        pdf.pad_bottom(5) { pdf.pad_bottom(3) {titlize(pdf, key)}; pdf.indent(20) {pdf_body_print(pdf, value)}; }
      when "Hash"
        titlize(pdf, key)
        pdf.indent(20) { value.each { |key, value| pdf.pad_bottom(5) {titlize(pdf, key); pdf_body_print(pdf, value);} } }
      when "String"
        pdf.pad_bottom(5) { titlize(pdf, key); pdf.indent(20) {pdf.text "#{value}", size: 10, align: :justify}; }
      end
    end
  else
    pdf.text "#{obj.to_s}", size: 10, align: :justify
  end
end

# File lib/api2pdf.rb, line 9
def titlize(pdf, text)
  pdf.text "<u>#{ActiveSupport::Inflector.humanize(text).upcase}</u>:", style: :bold, size: 8, :inline_format => true
end