# app/services/pdf/base_pdf.rb
#
# Layout base dos PDFs da Gade: cabeçalho preto com logo laranja,
# rodapé com data de geração. Herdar e implementar #corpo.
#
module Pdf
  class BasePdf
    LARANJA = 'F97316'
    PRETO   = '0A0A0A'
    CINZA   = '6B7280'

    def initialize
      @pdf = Prawn::Document.new(page_size: 'A4', margin: [40, 40, 60, 40])
    end

    def render
      cabecalho
      corpo
      rodape
      @pdf.render
    end

    private

    def cabecalho
      @pdf.fill_color PRETO
      @pdf.fill_rectangle [-40, @pdf.cursor + 40], @pdf.bounds.width + 80, 70

      @pdf.fill_color LARANJA
      @pdf.fill_rectangle [-40 + 0, @pdf.cursor + 40], 8, 70   # faixa laranja lateral

      @pdf.fill_color 'FFFFFF'
      @pdf.text_box 'REEM TRANSPORTE',
                    at: [10, @pdf.cursor + 20], size: 20, style: :bold
      @pdf.fill_color LARANJA
      @pdf.text_box 'Sistema de Controle de Custos Logísticos',
                    at: [10, @pdf.cursor - 4], size: 10

      @pdf.fill_color '000000'
      @pdf.move_down 55
    end

    def rodape
      @pdf.repeat(:all) do
        @pdf.bounding_box [0, 20], width: @pdf.bounds.width do
          @pdf.fill_color CINZA
          @pdf.text "Gerado em #{Time.current.strftime('%d/%m/%Y %H:%M')} · Reem Transporte — documento interno",
                    size: 8, align: :center
          @pdf.fill_color '000000'
        end
      end
    end

    def moeda(v)
      "R$ #{format('%.2f', v.to_f)}".gsub('.', ',')
    end

    def secao(titulo)
      @pdf.move_down 14
      @pdf.fill_color LARANJA
      @pdf.text titulo, size: 13, style: :bold
      @pdf.stroke_color LARANJA
      @pdf.stroke_horizontal_rule
      @pdf.fill_color '000000'
      @pdf.move_down 8
    end
  end
end