Get Pdf Page Counts

 

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

}