Implementing automated compliance reporting for custom customer support tickets ledgers using TCPDF generator script

Leveraging TCPDF for Automated Compliance Reporting of Customer Support Ticket Ledgers

Maintaining auditable records of customer support interactions is a critical compliance requirement for many organizations. This post details a robust method for generating automated, PDF-based compliance reports from a custom WordPress customer support ticket ledger. We’ll focus on integrating the TCPDF library directly into a WordPress plugin to programmatically create these reports, ensuring data integrity and accessibility.

Prerequisites and Setup

Before diving into the code, ensure you have the following:

• A WordPress installation with administrative access.
• A custom post type or database table acting as your ticket ledger. For this example, we’ll assume a custom post type named support_ticket with relevant meta fields (e.g., ticket_id, customer_name, issue_description, resolution_details, timestamp, status).
• Composer installed for managing PHP dependencies.
• Basic understanding of PHP, WordPress plugin development, and SQL queries.

We’ll install TCPDF using Composer. Navigate to your WordPress root directory in your terminal and run:

composer require tecnickcom/tcpdf

This will create a vendor directory and download the TCPDF library. You’ll need to include the Composer autoloader in your plugin.

Plugin Structure and Core Logic

Let’s create a simple WordPress plugin to house our reporting functionality. Create a new directory, e.g., /wp-content/plugins/compliance-reporter/, and inside it, create a main plugin file, e.g., compliance-reporter.php.

<?php
/**
 * Plugin Name: Compliance Reporter
 * Description: Generates automated compliance reports for support tickets.
 * Version: 1.0
 * Author: Antigravity
 */

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

// Include Composer autoloader.
require_once __DIR__ . '/vendor/autoload.php';

use TCPDF;

// Define constants for report generation.
define( 'REPORT_OUTPUT_DIR', WP_CONTENT_DIR . '/uploads/compliance-reports/' );
define( 'REPORT_FILENAME_PREFIX', 'support_ticket_report_' );

// Ensure the output directory exists.
if ( ! file_exists( REPORT_OUTPUT_DIR ) ) {
    wp_mkdir_p( REPORT_OUTPUT_DIR );
}

/**
 * Generates the compliance report PDF.
 */
function cr_generate_compliance_report() {
    // Fetch ticket data.
    $tickets = cr_get_support_tickets();

    if ( empty( $tickets ) ) {
        return new WP_Error( 'no_tickets', __( 'No support tickets found to report.', 'compliance-reporter' ) );
    }

    // Create new PDF document.
    $pdf = new TCPDF( PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false );

    // Set document information.
    $pdf->SetCreator( PDF_CREATOR );
    $pdf->SetAuthor( 'Compliance Reporter' );
    $pdf->SetTitle( 'Support Ticket Compliance Report' );
    $pdf->SetSubject( 'Automated Compliance Report' );

    // Set default header data.
    $pdf->SetHeaderData( '', '', 'Support Ticket Compliance Report', 'Generated on ' . date( 'Y-m-d H:i:s' ) );

    // Set header and footer fonts.
    $pdf->setHeaderFont( Array( PDF_FONT_NAME_MAIN, '', PDF_FONT_SIZE_MAIN ) );
    $pdf->setFooterFont( Array( PDF_FONT_NAME_DATA, '', PDF_FONT_SIZE_DATA ) );

    // Set default monospaced font.
    $pdf->SetDefaultMonospacedFont( PDF_FONT_MONOSPACED );

    // Set margins.
    $pdf->SetMargins( PDF_MARGIN_LEFT, PDF_MARGIN_TOP, PDF_MARGIN_RIGHT );
    $pdf->SetHeaderMargin( PDF_MARGIN_HEADER );
    $pdf->SetFooterMargin( PDF_MARGIN_FOOTER );

    // Set auto page breaks.
    $pdf->SetAutoPageBreak( TRUE, PDF_MARGIN_BOTTOM );

    // Set image scale factor.
    $pdf->setImageScale( PDF_IMAGE_SCALE_RATIO );

    // Add a page.
    $pdf->AddPage();

    // Set font.
    $pdf->SetFont( 'helvetica', '', 10 );

    // Build HTML content for the report.
    $html = '<h2>Support Ticket Ledger Report</h2>';
    $html .= '<p>This report details all support tickets logged within the specified period.</p>';
    $html .= '<table border="1" cellpadding="4" cellspacing="0">';
    $html .= '<thead><tr>';
    $html .= '<th>Ticket ID</th>';
    $html .= '<th>Customer Name</th>';
    $html .= '<th>Issue Summary</th>';
    $html .= '<th>Status</th>';
    $html .= '<th>Timestamp</th>';
    $html .= '</tr></thead><tbody>';

    foreach ( $tickets as $ticket ) {
        $html .= '<tr>';
        $html .= '<td>' . esc_html( $ticket->ticket_id ) . '</td>';
        $html .= '<td>' . esc_html( $ticket->customer_name ) . '</td>';
        $html .= '<td>' . esc_html( substr( $ticket->issue_description, 0, 50 ) . '...' ) . '</td>'; // Truncate for table view
        $html .= '<td>' . esc_html( $ticket->status ) . '</td>';
        $html .= '<td>' . esc_html( $ticket->timestamp ) . '</td>';
        $html .= '</tr>';
    }

    $html .= '</tbody></table>';

    // Write HTML content to PDF.
    $pdf->writeHTML( $html, TRUE, FALSE, TRUE, FALSE, '' );

    // Set output filename.
    $filename = REPORT_FILENAME_PREFIX . date( 'Ymd_His' ) . '.pdf';
    $filepath = REPORT_OUTPUT_DIR . $filename;

    // Output the PDF.
    // 'I': send the file inline to the browser.
    // 'D': send to the browser and force a download.
    // 'F': save to a local file.
    // 'S': return the document as a string.
    $pdf->Output( $filepath, 'F' );

    return $filepath;
}

/**
 * Fetches support ticket data from the database.
 * This is a placeholder; adapt to your specific data source.
 *
 * @return array|WP_Error An array of ticket objects or a WP_Error object.
 */
function cr_get_support_tickets() {
    $tickets_data = array();

    // Example: Fetching from a custom post type 'support_ticket'.
    $args = array(
        'post_type'      => 'support_ticket',
        'posts_per_page' => -1, // Fetch all tickets
        'post_status'    => 'publish', // Or relevant statuses
        'meta_query'     => array( // Example meta queries
            'relation' => 'AND',
            array(
                'key'     => 'ticket_id',
                'compare' => 'EXISTS',
            ),
            array(
                'key'     => 'customer_name',
                'compare' => 'EXISTS',
            ),
            array(
                'key'     => 'issue_description',
                'compare' => 'EXISTS',
            ),
            array(
                'key'     => 'status',
                'compare' => 'EXISTS',
            ),
            array(
                'key'     => 'timestamp',
                'compare' => 'EXISTS',
            ),
        ),
    );

    $query = new WP_Query( $args );

    if ( $query->have_posts() ) {
        while ( $query->have_posts() ) {
            $query->the_post();
            $post_id = get_the_ID();

            $ticket = new stdClass();
            $ticket->ticket_id         = get_post_meta( $post_id, 'ticket_id', true );
            $ticket->customer_name     = get_post_meta( $post_id, 'customer_name', true );
            $ticket->issue_description = get_the_title(); // Using post title as issue summary for simplicity
            $ticket->resolution_details= get_post_meta( $post_id, 'resolution_details', true );
            $ticket->status            = get_post_meta( $post_id, 'status', true );
            $ticket->timestamp         = get_post_meta( $post_id, 'timestamp', true ); // Assuming this is a date/time string

            // Basic validation/fallback
            if ( empty( $ticket->ticket_id ) ) {
                $ticket->ticket_id = 'N/A-' . $post_id;
            }
            if ( empty( $ticket->customer_name ) ) {
                $ticket->customer_name = 'Anonymous';
            }
            if ( empty( $ticket->status ) ) {
                $ticket->status = 'Unknown';
            }
            if ( empty( $ticket->timestamp ) ) {
                $ticket->timestamp = get_the_date( 'Y-m-d H:i:s', $post_id );
            }

            $tickets_data[] = $ticket;
        }
        wp_reset_postdata();
    } else {
        // No posts found, return empty array or handle as needed.
    }

    return $tickets_data;
}

/**
 * Adds an admin menu item to trigger report generation.
 */
function cr_add_admin_menu() {
    add_menu_page(
        __( 'Compliance Reports', 'compliance-reporter' ),
        __( 'Compliance Reports', 'compliance-reporter' ),
        'manage_options',
        'compliance-reporter',
        'cr_render_admin_page',
        'dashicons-shield-alt',
        80
    );
}
add_action( 'admin_menu', 'cr_add_admin_menu' );

/**
 * Renders the admin page for the compliance reporter.
 */
function cr_render_admin_page() {
    ?>
    

        

        

        

            
            
        

        
' . esc_html( $result->get_error_message() ) . '
';
            } else {
                $report_url = content_url( '/uploads/compliance-reports/' . basename( $result ) );
                echo '
' . sprintf( __( 'Report generated successfully! Download: %s', 'compliance-reporter' ), esc_url( $report_url ), esc_html( basename( $result ) ) ) . '
';
            }
        }
        ?>
    

// Add this to your plugin file to schedule the report generation daily.
function cr_schedule_report() {
    if ( ! wp_next_scheduled( 'cr_daily_report_event' ) ) {
        wp_schedule_event( time(), 'daily', 'cr_daily_report_event' );
    }
}
add_action( 'wp', 'cr_schedule_report' );

function cr_trigger_scheduled_report() {
    // You might want to add logic here to only generate if there's new data,
    // or based on specific date ranges.
    cr_generate_compliance_report();
}
add_action( 'cr_daily_report_event', 'cr_trigger_scheduled_report' );

// To unschedule:
// wp_clear_scheduled_hook( 'cr_daily_report_event' );