[泛微 Ecology10] 批量下载当前表单内所有附件

// 初始化 SDK 实例
const weFormSdk = window.WeFormSDK.getWeFormInstance();

// 定义需要下载附件的字段名称，请修改为对应的主表字段名称
const fieldNames = [
    "sigvendatf",
    "poa",
    "regcer",
    "taxcer",
    "pscq",
    "pscend",
    "bancon",
    "conpo",
    "emaappandc"
];

// 收集所有附件 ID
const values = [];
fieldNames.forEach(fieldName => {
    try {
        const fieldId = weFormSdk.convertFieldNameToId(fieldName);
        const fieldValue = weFormSdk.getFieldValue(fieldId);
        if (fieldValue) {
            values.push(fieldValue);
        }
    } catch (error) {
        console.error(` 获取字段 ${fieldName} 失败:`, error);
    }
});

// 创建异步下载任务
async function createDownloadTask() {
    if (values.length === 0) {
        window.WeFormSDK.showMessage("没有可下载的文件", 1, 3);
        return;
    }

    const today = new Date().toISOString().split('T')[0]; // 获取当前日期

    try {
        const response = await fetch('/api/file/batch/asynchronous/downloadByFileIds', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({
                "module": "ebuildercard",
                "fileIds": values.join(','),
                "authModule": "ebuildercard",
                "source": "form",
                "zipName": `附件名称在这里-请修改或赋值变量-${today}`
            })
        });

        const data = await response.json();
        if (!data.data.taskId) {
            throw new Error('获取任务 ID 失败');
        }

        window.WeFormSDK.showMessage("开始创建下载任务", 3, 2);
        await checkDownloadStatus(data.data.taskId);
    } catch (error) {
        console.error('创建下载任务失败:', error);
        window.WeFormSDK.showMessage("创建下载任务失败", 2, 3);
    }
}

// 轮询检查下载任务状态
async function checkDownloadStatus(taskId) {
    let attempt = 0;
    const maxAttempts = 20; // 最多尝试 20 次

    while (attempt < maxAttempts) {
        try {
            const response = await fetch(`/api/file/batchDownloadPercent?uuid=${taskId}`);
            const data = await response.json();

            if (data.data.fileId) {
                window.WeFormSDK.showMessage("下载任务已完成", 3, 2);
                downloadFile(data.data.fileId);
                return;
            }

            attempt++;
            if (attempt < maxAttempts) {
                await new Promise(resolve => setTimeout(resolve, 500)); // 等待 500ms
            }
        } catch (error) {
            console.error('查询下载状态失败:', error);
            throw error;
        }
    }

    throw new Error('下载任务超时');
}

// 执行文件下载
function downloadFile(fileId) {
    const link = document.createElement('a');
    link.href = `/api/file/remotedownload/${fileId}/upload/true`;
    link.setAttribute('download', '');
    document.body.appendChild(link);
    link.click();
    document.body.removeChild(link);
}

// 启动下载流程
createDownloadTask().catch(error => {
    console.error('下载流程出错:', error);
    window.WeFormSDK.showMessage("下载过程中出现错误", 2, 3);
});