const pdfParse = require("pdf-parse");
* Retrieves the total number of pages in a specified or latest
downloaded PDF file.
*
* @param {string|null} [fileName=null] - The name of the PDF file.
*If null, the latest downloaded file will be used.
* @returns {Promise<number>} - The total number of pages in the
*PDF file.
*/
async function getPdfPageCount(fileName = null) {
// Define the download directory path
const downloadDir = CONSTANTS.FILE.FILE_PATH;
let pdfFilePath;
if (fileName !== null) {
// Use the provided filename to construct the file path
pdfFilePath = `${downloadDir}/${fileName}`;
console.log(`Getting page count from the specified file:
${fileName}`);
} else {
// Get the latest downloaded file name
const latestDownloadedFileName = await
this.getLatestDownloadedFileName();
// Construct the full path of the latest downloaded PDF file
pdfFilePath = `${downloadDir}/${latestDownloadedFileName}`;
console.log(
`Getting page count from the latest downloaded file:
${latestDownloadedFileName}`
);
}
// Read the PDF file
const dataBuffer = fs.readFileSync(pdfFilePath);
// Parse the PDF and extract data
const data = await pdfParse(dataBuffer);
// Return the total number of pages
return data.numpages; // This will return the number of pages
// starting from 1
}
