<?xml version="1.0" encoding="UTF-8"?>
<a:service xmlns:a="http://www.leaf-framework.org/application" xmlns:s="leaf.plugin.script" trace="true">
    <a:init-procedure>
        <s:server-script><![CDATA[
            importPackage(java.util.zip);
            importPackage(java.io); /*可以传入参数*/

            function writeFile(zos, fn, fp) {
                var ze = new ZipEntry(fn);
                zos.putNextEntry(ze);
                var fis = new FileInputStream(fp);
                var b = new java.lang.reflect.Array.newInstance(java.lang.Byte.TYPE, 1024 * 64);
                var len = -1;
                while ((len = fis.read(b)) != -1) {
                    zos.write(b, 0, len);
                }
                fis.close();
            }
            
            function transfer(file, os) {
                var fis = new FileInputStream(file);
                var b = new java.lang.reflect.Array.newInstance(java.lang.Byte.TYPE, 1024 * 64);
                var len = -1;
                while ((len = fis.read(b)) != -1) {
                    os.write(b, 0, len);
                }
                fis.close();
            }
            
            
            function getdate() {
                var now = new Date()
                y = now.getFullYear()
                m = now.getMonth() + 1
                d = now.getDate()
                m = m < 10 ? "0" + m : m
                d = d < 10 ? "0" + d : d
                return y + "" + m + "" + d
            }
            $ctx["__request_type__"] = 'file'; //to indicate this request is not a JSON_REQUEST
            var resp = $ctx['_instance.javax.servlet.http.HttpServletResponse'];
            resp.setHeader("Pragma", "No-cache");
            resp.setHeader("Cache-Control", "no-cache, must-revalidate");
            var date_str = getdate();
            var doc_code = '付款请求书'
            var zip_filename = doc_code + '-' + date_str + ".zip";
            var file_path;
            var fnd_atm_flag = $ctx.parameter.fnd_atm_flag;
            resp.setDateHeader("Expires", 0);
            resp.setContentType("application/x-msdownload");
            
            try {
                var attachment_batch_dl = $bm('hls.HLS811.hls_doc_file_templet_get_atm');
                var result = attachment_batch_dl.queryAsMap({
                   document_id: $ctx.parameter.document_id,
                   document_table: $ctx.parameter.document_table,
                   batch_flag: $ctx.parameter.batch_flag,
                   content_id: $ctx.parameter.content_id
                  });
                var arr = result.getChildren();
                 if (arr.length == 1) {
                         //单个下载
                        file_name = arr[0].download_file_name;
                        if (fnd_atm_flag == 'Y') {
                            file_path = arr[0].download_file_path;
                        } else {
                            file_path = arr[0].download_file_path + file_name;
                        }
                        resp.setHeader("Content-disposition", "attachment; filename=" + encodeURI(file_name, 'utf-8'));
                        var os = resp.getOutputStream();
                        transfer(file_path, os);
                        os.flush();
                   } else if (arr.length > 1) {        
                      //打包下载
                        resp.setHeader("Content-disposition", "attachment; filename=" + encodeURI(zip_filename));
                        var zos = new ZipOutputStream(resp.getOutputStream());
                        var file_exist_list = {};
                        for (var i = 0;i < arr.length;i++) {
                            var f = arr[i];
                            if (f.download_file_path && !file_exist_list[f.download_file_name]) {
                                writeFile(zos, f.download_file_name, f.download_file_path);
                                file_exist_list[f.download_file_name] = 1;
                            } else {
                                file_exist_list[f.download_file_name] = file_exist_list[f.download_file_name] * 1 + 1;
                                var last_index = f.download_file_name.lastIndexOf(".");
                                var temp_exists_file_name = f.download_file_name.substr(0, last_index);
                                var temp_exists_file_type = f.download_file_name.substr(last_index, f.download_file_name.length);
                                temp_exists_file_name = temp_exists_file_name + '-' + file_exist_list[f.download_file_name] + temp_exists_file_type;
                                writeFile(zos, temp_exists_file_name, f.download_file_name);
                            }
                        }
                        zos.close();
                  
                }
            } catch (e) {
                println(e);
                var logger = $logger("server-script");
                logger.severe(e.message);
            }
        ]]></s:server-script>
    </a:init-procedure>
</a:service>