/* eslint-disable */
  let Print = function(dom, options) {
    if (!(this instanceof Print)) return new Print(dom, options)

    this.options = this.extend({
      'noPrint': '.no-print'
    }, options)

    if ((typeof dom) === 'string') {
      this.dom = document.querySelector(dom)
    } else {
      this.dom = dom
    }

    this.init()
  }
  Print.prototype = {
    init: function() {
      let content = this.getStyle() + this.getHtml()
      this.writeIframe(content)
    },
    extend: function(obj, obj2) {
      for (let k in obj2) {
        obj[k] = obj2[k]
      }
      return obj
    },

    getStyle: function() {
      let str = '',
        styles = document.querySelectorAll('style,link')
      for (let i = 0; i < styles.length; i++) {
        str += styles[i].outerHTML
      }
      str += '<style>' + (this.options.noPrint ? this.options.noPrint : '.no-print') + '{display:none}</style>'

      return str
    },

    getHtml: function() {
      let inputs = document.querySelectorAll('input')
      let textareas = document.querySelectorAll('textarea')
      let selects = document.querySelectorAll('select')

      for (let k in inputs) {
        if (inputs[k].type === 'checkbox' || inputs[k].type === 'radio') {
          if (inputs[k].checked === true) {
            inputs[k].setAttribute('checked', 'checked')
          } else {
            inputs[k].removeAttribute('checked')
          }
        } else if (inputs[k].type === 'text') {
          inputs[k].setAttribute('value', inputs[k].value)
        }
      }

      for (let k2 in textareas) {
        if (textareas[k2].type === 'textarea') {
          textareas[k2].innerHTML = textareas[k2].value
        }
      }

      for (let k3 in selects) {
        if (selects[k3].type === 'select-one') {
          let child = selects[k3].children
          for (let i in child) {
            if (child[i].tagName === 'OPTION') {
              if (child[i].selected === true) {
                child[i].setAttribute('selected', 'selected')
              } else {
                child[i].removeAttribute('selected')
              }
            }
          }
        }
      }

      return this.dom.outerHTML
    },

    writeIframe: function(content) {
      let w, doc, iframe = document.createElement('iframe'),
        f = document.body.appendChild(iframe)
      iframe.id = 'myIframe'
      iframe.style = 'position:absolutewidth:0height:0top:-10pxleft:-10px'

      w = f.contentWindow || f.contentDocument
      doc = f.contentDocument || f.contentWindow.document
      doc.open()
      doc.write(content)
      doc.close()
      this.toPrint(w)

      setTimeout(function() {
        document.body.removeChild(iframe)
      }, 100)
    },

    toPrint: function(frameWindow) {
      try {
        setTimeout(function() {
          frameWindow.focus()
          try {
            if (!frameWindow.document.execCommand('print', false, null)) {
              frameWindow.print()
            }
          } catch (e) {
            frameWindow.print()
          }
          frameWindow.close()
        }, 10)
      } catch (err) {
        console.log('err', err)
      }
    }
  }
  export default Print
