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merged 2 commits into from
Nov 6, 2025
Merged

Ua template fix #3072

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4e5f728
Merge pull request #3071 from codeeu/dev
bernardhanna Nov 5, 2025
7c0554f
UA fix: pdfTeX-safe fonts, homoglyph & date normalization, local TEXM…
bernardhanna Nov 6, 2025
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233 changes: 162 additions & 71 deletions app/CertificateParticipation.php
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,6 @@
use Carbon\Carbon;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Str;
use Symfony\Component\Process\Exception\ProcessFailedException;
use Symfony\Component\Process\Process;

class CertificateParticipation
Expand All @@ -17,56 +16,68 @@ class CertificateParticipation
private $templateName = 'participation.tex';

private $name_of_certificate_holder;

private $resource_path;
private $event_name;
private $event_date;

private $pdflatex;

private $personalized_template_name;

private $id;

private $event_name;

private $event_date;
private $latex_root; // absolute path where we read/write/compile

private $certificate_holder_name_lang = 'russian';

private $event_name_lang = 'russian';

private $event_date_lang = 'russian';

public function __construct($name_for_certificate, $event_name, $event_date)
{
ini_set('max_execution_time', 600); // Set max execution time to 600 seconds
ini_set('memory_limit', '512M'); // Set memory limit to 512 MB (adjust as needed)
ini_set('max_execution_time', 600);
ini_set('memory_limit', '512M');

$this->name_of_certificate_holder = $name_for_certificate;
$this->event_name = $event_name;
$this->event_date = $event_date;
$this->name_of_certificate_holder = (string) $name_for_certificate;
$this->event_name = (string) $event_name;
$this->event_date = (string) $event_date;

$random = Str::random(10);
$userId = auth()->id() ?? 'cli';

$this->personalized_template_name = $random . '-' . $userId;

$this->personalized_template_name = $random . '-' . auth()->id();
$this->resource_path = resource_path() . '/latex';
$this->pdflatex = config('codeweek.pdflatex_path');
$this->id = auth()->id() . '-' . $random;
// Resolve disk root (works whether disk points to resources/latex or storage/app/latex)
$diskPath = '';
try {
$diskPath = (string) Storage::disk('latex')->path('');
} catch (\Throwable $e) {
$diskPath = '';
}
$diskPath = rtrim($diskPath, DIRECTORY_SEPARATOR);
$this->latex_root = $diskPath !== '' ? $diskPath : resource_path('latex');

$this->pdflatex = (string) config('codeweek.pdflatex_path');
$this->id = $userId . '-' . $random;
}

public function generate()
{
$this->customize_and_save_latex();
$this->run_pdf_creation();
$this->clean_temp_files();

try {
$this->run_pdf_creation();
} catch (\Throwable $e) {
// keep .tex/.log on failure for debugging
throw $e;
}
$this->clean_temp_files(); // success: remove aux/log/tex
return $this->personalized_template_name;
}

private function clean_temp_files()
private function path(string $ext): string
{
$extensions = ['aux', 'tex', 'log'];
foreach ($extensions as $ext) {
Storage::disk('latex')->delete($this->personalized_template_name . '.' . $ext);
return $this->latex_root . '/' . $this->personalized_template_name . '.' . $ext;
}

private function clean_temp_files(): void
{
foreach (['aux', 'log', 'tex'] as $ext) {
@unlink($this->path($ext));
}
}

Expand All @@ -80,81 +91,161 @@ protected function update_event($s3path)

protected function copy_to_s3(): string
{
$inputStream = Storage::disk('latex')->getDriver()->readStream($this->personalized_template_name . '.pdf');
$destination = Storage::disk('s3')->path('/certificates/' . $this->id . '.pdf');
$pdf = $this->path('pdf');
$inputStream = fopen($pdf, 'rb');
$destination = 'certificates/' . $this->id . '.pdf';
Storage::disk('s3')->put($destination, $inputStream);

return Storage::disk('s3')->url('certificates/' . $this->id . '.pdf');
return Storage::disk('s3')->url($destination);
}

protected function customize_and_save_latex()
{
// --- Choose base template (per detected script in any field) ---
if ($this->is_greek_text($this->event_name) || $this->is_greek_text($this->event_date) || $this->is_greek_text($this->name_of_certificate_holder)) {
$this->templateName = 'participation_greek.tex';
} else if ($this->is_ukrainian_text($this->event_name) || $this->is_ukrainian_text($this->event_date) || $this->is_ukrainian_text($this->name_of_certificate_holder)) {
} elseif ($this->is_ukrainian_text($this->event_name) || $this->is_ukrainian_text($this->event_date) || $this->is_ukrainian_text($this->name_of_certificate_holder)) {
$this->templateName = 'participation_ukrainian.tex';
} else {
$this->templateName = 'participation.tex';
}

if ($this->is_greek_text($this->event_name)) {
$this->event_name_lang = 'greek';
} else if($this->is_ukrainian_text($this->event_name)) {
$this->event_name_lang = 'ukrainian';
// --- Per-field language flags for otherlanguage* blocks ---
$this->event_name_lang = $this->is_greek_text($this->event_name) ? 'greek' : ($this->is_ukrainian_text($this->event_name) ? 'ukrainian' : 'english');
$this->event_date_lang = $this->is_greek_text($this->event_date) ? 'greek' : ($this->is_ukrainian_text($this->event_date) ? 'ukrainian' : 'english');
$this->certificate_holder_name_lang = $this->is_greek_text($this->name_of_certificate_holder) ? 'greek' : ($this->is_ukrainian_text($this->name_of_certificate_holder) ? 'ukrainian' : 'english');

// --- Load LaTeX template source ---
$base_template = null;
try {
$base_template = Storage::disk('latex')->get($this->templateName);
} catch (\Throwable $e) {
$base_template = null;
}

if ($this->is_greek_text($this->event_date)) {
$this->event_date_lang = 'greek';
} else if($this->is_ukrainian_text($this->event_date)) {
$this->event_date_lang = 'ukrainian';
if ($base_template === null || $base_template === '') {
$fallback = resource_path('latex/' . $this->templateName);
if (is_file($fallback)) {
$base_template = (string) file_get_contents($fallback);
}
}

if ($this->is_greek_text($this->name_of_certificate_holder)) {
$this->certificate_holder_name_lang = 'greek';
} else if($this->is_ukrainian_text($this->name_of_certificate_holder)) {
$this->certificate_holder_name_lang = 'ukrainian';
if ($base_template === null || $base_template === '' || strlen($base_template) < 100) {
throw new \RuntimeException(
"Base template missing/empty.\n".
"tried disk root: {$this->latex_root}/{$this->templateName}\n".
"fallback: " . resource_path('latex/'.$this->templateName)
);
}

$base_template = Storage::disk('latex')->get($this->templateName);

$template = str_replace('<CERTIFICATE_HOLDER_NAME>', $this->tex_escape($this->name_of_certificate_holder), $base_template);
$template = str_replace('<EVENT_NAME>', $this->tex_escape($this->event_name), $template);
$template = str_replace('<EVENT_DATE>', $this->tex_escape($this->event_date), $template);

// --- Normalize punctuation that often breaks pdfTeX ---
$normalizePunct = static function (string $s): string {
return strtr($s, [
"’"=>"'", "‘"=>"'", "“"=>'"', "”"=>'"',
"–"=>"-", "—"=>"--", "\u{00A0}"=>" "
]);
};

// --- Fix mixed alphabet homoglyphs for Cyrillic langs, and normalize date for Ukrainian ---
$holderRaw = $this->fix_cyrillic_homoglyphs($this->name_of_certificate_holder, $this->certificate_holder_name_lang);
$eventRaw = $this->fix_cyrillic_homoglyphs($this->event_name, $this->event_name_lang);
$dateRaw = $this->normalize_date_for_lang(
$this->fix_cyrillic_homoglyphs($this->event_date, $this->event_date_lang),
$this->event_date_lang
);

// --- Compose final TeX-safe values ---
$holder = $this->tex_escape($normalizePunct($holderRaw));
$event = $this->tex_escape($normalizePunct($eventRaw));
$date = $this->tex_escape($normalizePunct($dateRaw));

// --- Substitute placeholders ---
$template = str_replace('<CERTIFICATE_HOLDER_NAME>', $holder, $base_template);
$template = str_replace('<EVENT_NAME>', $event, $template);
$template = str_replace('<EVENT_DATE>', $date, $template);
$template = str_replace('<CERTIFICATE_HOLDER_NAME_LANG>', $this->tex_escape($this->certificate_holder_name_lang), $template);
$template = str_replace('<EVENT_NAME_LANG>', $this->tex_escape($this->event_name_lang), $template);
$template = str_replace('<EVENT_DATE_LANG>', $this->tex_escape($this->event_date_lang), $template);

// --- Persist .tex where pdflatex will read it ---
Storage::disk('latex')->put($this->personalized_template_name . '.tex', $template);
@file_put_contents($this->path('tex'), $template);

if (!is_file($this->path('tex')) || filesize($this->path('tex')) < 50) {
throw new \RuntimeException("Generated TEX missing or empty at: " . $this->path('tex') .
". Ensure templates & images are available under {$this->latex_root}");
}
}

protected function run_pdf_creation(): void
{
if (!file_exists($this->pdflatex)) {
if (!is_file($this->pdflatex)) {
throw new \RuntimeException("pdflatex binary not found at path: {$this->pdflatex}");
}

$command = escapeshellcmd($this->pdflatex) . ' -interaction=nonstopmode -output-directory '
. escapeshellarg($this->resource_path) . ' '
. escapeshellarg($this->resource_path . '/' . $this->personalized_template_name . '.tex');

logger($command);
logger($this->resource_path);
$process = Process::fromShellCommandline($command, $this->resource_path);
$process->setTimeout(600); // Allow up to 600 seconds for execution
$this->execute_process($process);

if (!$process->isSuccessful()) {
// Optionally log the $process->getErrorOutput() or $process->getOutput()
// Then DO NOT throw the exception:
// throw new ProcessFailedException($process);
$texBasename = $this->personalized_template_name . '.tex';
$pdfPath = $this->path('pdf');
$logPath = $this->path('log');

$cmd = escapeshellcmd($this->pdflatex)
. ' -interaction=nonstopmode -halt-on-error'
. ' -output-directory ' . escapeshellarg($this->latex_root)
. ' ' . escapeshellarg($texBasename);

$process = Process::fromShellCommandline($cmd, $this->latex_root);
$process->setTimeout(600);
$process->run();

if (!$process->isSuccessful() || !is_file($pdfPath)) {
$stdout = $process->getOutput();
$stderr = $process->getErrorOutput();
$logTail = is_file($logPath)
? implode("\n", array_slice(explode("\n", (string) @file_get_contents($logPath)), -120))
: '(no .log file found)';

throw new \RuntimeException(
"pdflatex failed or PDF not produced.\n".
"-- latex_root -- {$this->latex_root}\n".
"-- tex -- {$this->path('tex')}\n".
"-- pdf exists -- " . (is_file($pdfPath) ? 'yes' : 'no') . "\n\n".
"-- STDOUT --\n{$stdout}\n\n-- STDERR --\n{$stderr}\n\n-- LOG TAIL (.log) --\n{$logTail}"
);
}
}

private function execute_process(Process $process): void
/**
* Swap Latin homoglyphs to proper Cyrillic where the field language is Cyrillic.
* We keep this conservative (i/І only) to avoid corrupting mixed-language input.
*/
private function fix_cyrillic_homoglyphs(string $s, string $lang): string
{
$process->start();
if ($lang === 'ukrainian' || $lang === 'russian') {
$s = strtr($s, [
'i' => 'і', // U+0069 -> U+0456
'I' => 'І', // U+0049 -> U+0406
]);
}
return $s;
}

while ($process->isRunning()) {
usleep(400000); // Sleep for 400ms
/**
* For Ukrainian dates, collapse any datetime to "D MMMM YYYY р." (uk locale).
* Leaves other languages untouched.
*/
private function normalize_date_for_lang(string $s, string $lang): string
{
if ($lang !== 'ukrainian') return $s;

// If it's a plain date or datetime string we can parse, format nicely.
if (preg_match('/^\d{4}-\d{2}-\d{2}/', $s) || preg_match('/^\d{1,2}[\/\.\-]\d{1,2}[\/\.\-]\d{2,4}/', $s)) {
try {
$dt = Carbon::parse($s);
$dt->locale('uk'); // requires intl ICU to be present on the system
return $dt->isoFormat('D MMMM YYYY [р.]');
} catch (\Throwable $e) {
// fall through to original if parse fails
}
}

// If user pasted a full datetime with time, strip a trailing time chunk like " 14:30" or " 14:30:00"
$s = preg_replace('/\s+\d{1,2}:\d{2}(:\d{2})?(\s*[A-Z]{2,4})?$/u', '', $s) ?? $s;
return $s;
}
}
2 changes: 1 addition & 1 deletion config/filesystems.php
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@
'disks' => [
'latex' => [
'driver' => 'local',
'root' => resource_path('latex'),
'root' => resource_path('latex'),
],

'meet-and-code' => [
Expand Down
1 change: 0 additions & 1 deletion public/build/assets/app-0WiwgC5K.css
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1 change: 1 addition & 0 deletions public/build/assets/app-B0ME6vUp.css
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2 changes: 1 addition & 1 deletion public/build/assets/app-DGQVD7ts.css → public/build/assets/app-D_unIreo.css
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