const fs = require('fs')
const path = require('path')
const { DOMMatrix, ImageData, Path2D } = require('@napi-rs/canvas')

global.DOMMatrix = DOMMatrix
global.ImageData = ImageData
global.Path2D = Path2D
if (!process.getBuiltinModule) process.getBuiltinModule = name => require(name)

async function main() {
  const pdfjs = await import('pdfjs-dist/legacy/build/pdf.mjs')
  const root = path.resolve(__dirname, '..', '..')
  const pdfPath = path.resolve(root, 'doc', '大连元利流体技术有限公司MES系统用户操作手册_V1.1_2026-07-23.pdf')
  const terms = process.argv.slice(2)
  const pdf = await pdfjs.getDocument({ data: new Uint8Array(fs.readFileSync(pdfPath)), disableWorker: true }).promise
  console.log(`PDF pages: ${pdf.numPages}`)
  for (let pageNumber = 1; pageNumber <= pdf.numPages; pageNumber++) {
    const page = await pdf.getPage(pageNumber)
    const content = await page.getTextContent()
    const text = content.items.map(item => item.str).join(' ').replace(/\s+/g, ' ').trim()
    if (terms.length === 0 || terms.some(term => text.includes(term))) {
      console.log(`${pageNumber}\t${text.slice(0, 220)}`)
    }
  }
}

main().catch(error => {
  console.error(error.stack || error.message)
  process.exitCode = 1
})