class RailsCodeAuditor::PdfGenerator

def self.generate(results, scores, graphs, html_pdf_paths = [])
  FileUtils.mkdir_p("tmp")
  FileUtils.mkdir_p("report/pdf")
  # Generate main Prawn PDF
  Prawn::Document.generate(TEMP_PRWAN_PDF) do |pdf|
    pdf.text "Rails Code Audit Report", size: 24, style: :bold, align: :center
    pdf.move_down 20
    # Summary Scores Table
    pdf.text "Audit Summary Scores", size: 16, style: :bold
    pdf.move_down 10
    summary_data = [["Metric", "Score (0-100)", "Remarks"]]
    scores.each do |metric, value|
      summary_data << [metric.to_s.humanize, value[:score], value[:remark]]
    end
    pdf.table(summary_data, header: true, width: pdf.bounds.width)
    pdf.move_down 20
    # Detailed Audit Results
    pdf.text "Detailed Audit Results", size: 16, style: :bold
    pdf.move_down 10
    results.each do |check_name, result|
      pdf.text check_name.to_s.humanize, size: 12, style: :bold
      pdf.text "Status: #{result[:status]}"
      pdf.text "Details: #{result[:details]}"
      pdf.move_down 10
    end
    # Graphs (optional)
    if graphs && graphs.any?
      pdf.start_new_page
      pdf.text "Visual Graphs", size: 16, style: :bold
      pdf.move_down 10
      graphs.each do |graph|
        if File.exist?(graph[:path])
          pdf.text graph[:title], size: 12, style: :bold
          pdf.image graph[:path], fit: [500, 300]
          pdf.move_down 20
        else
          puts "[!] Graph file missing: #{graph[:path]}"
        end
      end
    end
    pdf.number_pages "Page <page> of <total>", at: [pdf.bounds.right - 150, 0]
  end
  puts "[✓] Main audit PDF saved to #{TEMP_PRWAN_PDF}"
  # Merge all PDFs (main + html converted)
  combined_pdf = CombinePDF.new
  combined_pdf << CombinePDF.load(TEMP_PRWAN_PDF)
  html_pdf_paths.each do |pdf_path|
    if File.exist?(pdf_path)
      puts "[+] Merging #{pdf_path}"
      combined_pdf << CombinePDF.load(pdf_path)
    else
      puts "[!] Skipped missing HTML-generated PDF: #{pdf_path}"
    end
  end
  combined_pdf.save(OUTPUT_PATH)
  puts "[✓] Final merged PDF saved to #{OUTPUT_PATH}"
end