import html2Canvas from 'html2canvas'
import JsPDF from 'jspdf'
export default{
  install (Vue, options) {
    Vue.prototype.getPdf = function (title, method) {
      html2Canvas(document.querySelector('#pdfDom'), {
         useCORS:true
      }).then(function (canvas) {
        let contentWidth = canvas.width
        let contentHeight = canvas.height
        let pageHeight = contentWidth / 592.28 * 841.89
        let leftHeight = contentHeight
        let position = 0
        let imgWidth = 595.28
        let imgHeight = 592.28 / contentWidth * contentHeight
        let pageData = canvas.toDataURL('image/jpeg', 0.8)
        let PDF = new JsPDF('', 'pt', 'a4')
        PDF.addImage(pageData, 'JPEG', 0, 0, imgWidth, imgHeight)
        // if (leftHeight < pageHeight) {
        //   PDF.addImage(pageData, 'JPEG', 0, 0, imgWidth, imgHeight)
        // } else {
        //   while (leftHeight > 0) {
        //     PDF.addImage(pageData, 'JPEG', 0, position, imgWidth, imgHeight)
        //     leftHeight -= pageHeight
        //     position -= 841.89
        //     if (leftHeight > 0) {
        //       PDF.addPage()
        //     }
        //   }
        // }
        PDF.save(title+'.pdf')
        if (method) {
          method()
        }
      }
      )
    }
  }
}