Add raw mPDF input debugger

app/Config/Routes.php

@@ -417,6 +417,7 @@ $routes->get('Ipd_discharge/search_patient', 'Ipd_discharge::search_patient', ['
 $routes->get('Ipd_discharge/search_patient_ajax', 'Ipd_discharge::search_patient_ajax', ['filter' => 'permission:ipd_discharge.view,ipd_discharge.manage']);
 $routes->get('Ipd_discharge/debug_ipd_fields/(:num)', 'Ipd_discharge::debug_ipd_fields/$1', ['filter' => 'permission:admin.access,admin.settings']);
 $routes->get('Ipd_discharge/debug_discharge_html/(:num)', 'Ipd_discharge::debug_discharge_html/$1', ['filter' => 'permission:admin.access,admin.settings']);
+$routes->get('Ipd_discharge/debug_mpdf_input/(:num)/(:num)', 'Ipd_discharge::debug_mpdf_input/$1/$2', ['filter' => 'permission:template.discharge,ipd_discharge.view,billing.access']);
 $routes->get('Ipd_discharge/placeholder_preview', 'Ipd_discharge::placeholder_preview', ['filter' => 'permission:ipd_discharge.view,ipd_discharge.manage']);
 $routes->get('Ipd_discharge/placeholder_preview/(:num)', 'Ipd_discharge::placeholder_preview/$1', ['filter' => 'permission:ipd_discharge.view,ipd_discharge.manage']);
 $routes->match(['GET', 'POST'], 'Ipd_discharge/ipd_select/(:num)', 'Ipd_discharge::ipd_select/$1', ['filter' => 'permission:ipd_discharge.manage']);

app/Controllers/Ipd_discharge.php

@@ -5555,6 +5555,24 @@ class Ipd_discharge extends BaseController
             );
     }
 
+    public function debug_mpdf_input(int $ipdId, int $templateId = 0)
+    {
+        if ($resp = $this->requireAnyPermission(['template.discharge', 'ipd_discharge.view', 'billing.access'])) {
+            return $resp;
+        }
+
+        $file = WRITEPATH . 'debug' . DIRECTORY_SEPARATOR . 'discharge_mpdf_input_' . $ipdId . '_' . $templateId . '.html';
+        if (! is_file($file)) {
+            return $this->response->setStatusCode(404)->setBody('Generate the PDF first, then reopen this debug view.');
+        }
+
+        return view('ipd_discharge/mpdf_raw_html', [
+            'ipd_id' => $ipdId,
+            'template_id' => $templateId,
+            'html' => (string) file_get_contents($file),
+        ]);
+    }
+
     /**
      * Placeholder preview page: shows each placeholder and resolved content for an IPD.
      * Access via: /Ipd_discharge/placeholder_preview/{ipdId}?tpl={templateId}
@@ -7398,6 +7416,14 @@ class Ipd_discharge extends BaseController
 
             $pdfHtml .= $renderedHtml;
             $pdfHtml = mpdf_normalize_font_weight_css($pdfHtml);
+
+            $debugDirectory = WRITEPATH . 'debug';
+            if (! is_dir($debugDirectory)) {
+                mkdir($debugDirectory, 0755, true);
+            }
+            $debugTemplateId = (int) ($templatePack['selected_template_id'] ?? 0);
+            file_put_contents($debugDirectory . DIRECTORY_SEPARATOR . 'discharge_mpdf_input_' . $ipdId . '_' . $debugTemplateId . '.html', $pdfHtml, LOCK_EX);
+
             $pdfBinary = $this->runMpdfWithTolerantWarnings(static function () use ($mpdf, $pdfHtml, $fileName): string {
                 $mpdf->WriteHTML($pdfHtml);
 

app/Views/ipd_discharge/discharge_template_edit.php

@@ -157,6 +157,7 @@ $placeholders = [
                             <button type="button" class="btn btn-outline-primary btn-sm" id="btn_preview">Preview</button>
                             <button type="button" class="btn btn-outline-danger btn-sm" id="btn_pdf">PDF</button>
                             <button type="button" class="btn btn-outline-secondary btn-sm" id="btn_debug_html" title="Show raw HTML sent to mPDF">Debug HTML</button>
+                            <button type="button" class="btn btn-outline-dark btn-sm" id="btn_mpdf_input" title="View exact HTML saved immediately before WriteHTML">mPDF Input</button>
                         </div>
                     </div>
                 </div>
@@ -267,6 +268,12 @@ $placeholders = [
         window.open('<?= base_url('Ipd_discharge/show_discharge') ?>/' + ipdId + '/1?html=1' + (editId > 0 ? '&tpl=' + editId : ''), '_blank');
     });
 
+    document.getElementById('btn_mpdf_input').addEventListener('click', function () {
+        var ipdId = parseInt(val('preview_ipd_id'), 10);
+        if (!ipdId || !editId) { alert('Save the template and enter IPD ID first.'); return; }
+        window.open('<?= base_url('Ipd_discharge/debug_mpdf_input') ?>/' + ipdId + '/' + editId, '_blank');
+    });
+
     /* Placeholder click-to-copy */
     document.querySelectorAll('.ph-chip').forEach(function (chip) {
         chip.addEventListener('click', function () {

app/Views/ipd_discharge/mpdf_raw_html.php

@@ -0,0 +1,17 @@
+<?php
+$ipdId = (int) ($ipd_id ?? 0);
+$templateId = (int) ($template_id ?? 0);
+$templateName = (string) ($template_name ?? '');
+$html = (string) ($html ?? '');
+?>
+<section class="content">
+    <div class="card">
+        <div class="card-header d-flex justify-content-between align-items-center">
+            <strong>Exact HTML passed to mPDF WriteHTML()</strong>
+            <span class="small text-muted">IPD <?= $ipdId ?> | Template <?= $templateId ?>: <?= esc($templateName) ?></span>
+        </div>
+        <div class="card-body">
+            <pre style="white-space:pre-wrap;word-break:break-word;font-family:Consolas,monospace;font-size:12px;margin:0;"><?= esc($html) ?></pre>
+        </div>
+    </div>
+</section>