在 Node.js SDK 中解析 PDF 以按 Id 提取图像

import fs from 'node:fs/promises';
import path from 'node:path';

export {ParseExportImage};

const pdfApi = new PdfApi(APP_SID, APP_KEY);

const ParseExportImage = {
    async uploadDocument (documentName, localFolder, tempFolder) {
        const fileNamePath = path.join(localFolder, documentName);
        const fileData = await fs.readFile(fileNamePath);
        const storagePath = path.join(tempFolder, documentName);
        await pdfApi.uploadFile(storagePath, fileData)
            .then(() => console.log("File: '" + documentName +"' successfully uploaded."));
    },
    
    async export(documentName, imageId, localFolder, remoteFolder) {
        if ( pdfApi ) {
            await uploadDocument(documentName, localFolder, remoteFolder);

            const response = await pdfApi.getImageExtractAsPng(documentName, imageId, null, null, null, remoteFolder);
            if (response.body) {
            	const filePath = path.join(localFolder, imageId + ".png");
             	await fs.writeFile(filePath, response.body);
             	console.log("Downloaded: " + filePath);
            }
            else
                console.error("ParseExportImage(): Unexpected error!") 

        }
    }
};