const fs = require('fs')
const ExcelJS = require('exceljs')

const csvPath = process.argv[2] || '历史SKU目录清单.csv'
const xlsxPath = process.argv[3] || '历史SKU目录清单.xlsx'
const windowsHeader = 'windows_path（Windows路径）'
const prefix = process.argv[4] || '\\\\192.168.58.116\\yya\\品类二部\\建模原图'

function parseCsvLine(line) {
  const result = []
  let current = ''
  let inQuotes = false

  for (let i = 0; i < line.length; i += 1) {
    const char = line[i]
    const next = line[i + 1]

    if (char === '"') {
      if (inQuotes && next === '"') {
        current += '"'
        i += 1
      } else {
        inQuotes = !inQuotes
      }
      continue
    }

    if (char === ',' && !inQuotes) {
      result.push(current)
      current = ''
      continue
    }

    current += char
  }

  result.push(current)
  return result
}

function escapeCsvCell(value) {
  const text = String(value ?? '')
  if (/[",\r\n]/.test(text)) {
    return `"${text.replace(/"/g, '""')}"`
  }
  return text
}

async function main() {
  const raw = fs.readFileSync(csvPath, 'utf8')
  const lines = raw.split(/\r?\n/).filter((line) => line.length > 0)
  const rows = lines.map(parseCsvLine)
  const header = rows[0]
  if (header.length > 0) {
    header[0] = String(header[0] || '').replace(/^\uFEFF/, '')
  }
  const windowsIndex = header.indexOf(windowsHeader)
  const kept = [header]

  for (let i = 1; i < rows.length; i += 1) {
    const row = rows[i]
    const windowsPath = String(row[windowsIndex] || '')
    if (windowsPath.startsWith(prefix)) {
      continue
    }
    kept.push(row)
  }

  fs.writeFileSync(csvPath, `\uFEFF${kept.map((row) => row.map(escapeCsvCell).join(',')).join('\r\n')}`, 'utf8')

  const workbook = new ExcelJS.Workbook()
  const worksheet = await workbook.csv.readFile(csvPath)
  worksheet.name = 'SKU目录'
  worksheet.views = [{ state: 'frozen', ySplit: 1 }]
  worksheet.columns.forEach((column) => {
    let maxLength = String(column.header || '').length
    column.eachCell({ includeEmpty: true }, (cell) => {
      const length = String(cell.value ?? '').length
      if (length > maxLength) {
        maxLength = length
      }
    })
    column.width = Math.min(90, Math.max(12, maxLength + 2))
  })
  await workbook.xlsx.writeFile(xlsxPath)
  console.log('done')
}

main().catch((error) => {
  console.error(error)
  process.exit(1)
})