var Common = require('./Common.js')

/**
 * 报表下载服务
 */
export default {

  /**
	 * GET 方式下载文件
	 * @param {*} url 
	 * @param {*} fileName 
	 */
  downloadFile: function (url, fileName) {
    var a = document.createElement('a')
    a.download = fileName
    a.href = url
    $('body').append(a) // 修复firefox中无法触发click
    a.click()
    $(a).remove()
  },


  /**
	 * 报表下载
	 * @param {Object} fileName
	 * @author GuoZhiBo 20200410
	 */
  reportDownload: function (fileName) {
    var downloadUrl = Common.getApiURL('file/reportDownload') + '?fileName=' + window.encodeURIComponent(fileName)
    this.downloadFile(downloadUrl, fileName)
  },

  /**
	 * 文件下载
	 * @param {Object} className 类名称
	 * @param {Object} fileName 文件名称
	 * @author GuoZhiBo 20211008
	 */
  fileDownload:function(className, fileName){
	 	var downloadUrl = Common.getApiURL('file/fileDownload') + '?className=' + className
	                + '&fileName=' + window.encodeURIComponent(fileName)
	    this.downloadFile(downloadUrl, fileName)
  },

  /**
	 * POST 方式下载文件
	 * @param {http请求的地址} url 
	 * @param {post请求需要的参数} params 
	 */
  postDownloadFile: function (url, params) {
    var form = document.createElement('form')
    form.style.display = 'none'
    form.action = url
    form.method = 'post'
    document.body.appendChild(form)
    // 动态创建input并给value赋值
    for (var key in params) {
      var input = document.createElement('input')
      input.type = 'hidden'
      input.name = key
      input.value = params[key]
      form.appendChild(input)
    }
    form.submit()
    form.remove()
  },
}