var Common = require("./Common.js");

/**
 * 报表下载服务
 */
module.exports = {

	/**
	 * 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();
	}
}