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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | /** @license For full copyright and license information, please see the LICENSE.md file. */ |
| 6 | |
| 7 | namespace App\Modules\Pdf\Presentation\Htmx; |
| 8 | |
| 9 | defined('AMMONLY_APP') || exit('Direct script access is forbidden.'); |
| 10 | |
| 11 | use App\Core\Database\FallbackPdoResolver; |
| 12 | use App\Modules\Pdf\Task\ProcessPdfQueueTask; |
| 13 | use PDO; |
| 14 | use Psr\Http\Message\ResponseFactoryInterface; |
| 15 | use Psr\Http\Message\ResponseInterface; |
| 16 | use Psr\Http\Message\ServerRequestInterface; |
| 17 | use Twig\Environment as TwigEnvironment; |
| 18 | |
| 19 | /** |
| 20 | * HTMX Controller for Asynchronous Batch PDF Generation Queue & Polling. |
| 21 | * |
| 22 | * @package App\Modules\Pdf\Presentation\Htmx |
| 23 | */ |
| 24 | final readonly class PdfQueueHtmxController |
| 25 | { |
| 26 | private const string CONTENT_TYPE_HTML = 'text/html; charset=UTF-8'; |
| 27 | |
| 28 | private ?PDO $pdo; |
| 29 | |
| 30 | /** |
| 31 | * PdfQueueHtmxController constructor. |
| 32 | * |
| 33 | * @param TwigEnvironment $twig Twig template engine. |
| 34 | * @param ResponseFactoryInterface $responseFactory PSR-17 response factory. |
| 35 | * @param PDO|null $pdo Database connection handle. |
| 36 | */ |
| 37 | public function __construct( |
| 38 | private TwigEnvironment $twig, |
| 39 | private ResponseFactoryInterface $responseFactory, |
| 40 | ?PDO $pdo = null |
| 41 | ) { |
| 42 | $this->pdo = $pdo ?? FallbackPdoResolver::resolveDefaultConnection(); |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * Enqueues batch PDF generation task and returns modal with live polling. |
| 47 | * |
| 48 | * @param ServerRequestInterface $request HTTP request. |
| 49 | * @return ResponseInterface Modal HTML snippet with progress bar. |
| 50 | */ |
| 51 | public function createQueue(ServerRequestInterface $request): ResponseInterface |
| 52 | { |
| 53 | $parsedBody = (array) ($request->getParsedBody() ?? []); |
| 54 | $templateId = (int) ($parsedBody['template_id'] ?? 0); |
| 55 | $module = (string) ($parsedBody['module_name'] ?? ''); |
| 56 | $rawRecords = $parsedBody['record_ids'] ?? []; |
| 57 | |
| 58 | $recordIds = []; |
| 59 | if (is_array($rawRecords)) { |
| 60 | $mapped = array_map('intval', $rawRecords); |
| 61 | $recordIds = array_values(array_filter($mapped, static fn(int $id): bool => $id > 0)); |
| 62 | } elseif (is_string($rawRecords) && trim($rawRecords) !== '') { |
| 63 | $mapped = array_map('intval', explode(',', $rawRecords)); |
| 64 | $recordIds = array_values(array_filter($mapped, static fn(int $id): bool => $id > 0)); |
| 65 | } |
| 66 | |
| 67 | $totalCount = count($recordIds); |
| 68 | $queueId = $this->insertQueueRecord($templateId, $module, $recordIds, $totalCount); |
| 69 | |
| 70 | // Optionally kick off an immediate worker run |
| 71 | $worker = new ProcessPdfQueueTask(null, $this->pdo); |
| 72 | $worker->run(); |
| 73 | |
| 74 | $html = $this->twig->render('modules/pdf_templates/partials/modal_queue_progress.twig', [ |
| 75 | 'queue_id' => $queueId, |
| 76 | 'total_count' => $totalCount, |
| 77 | 'processed_count' => 0, |
| 78 | 'progress_percent' => 0, |
| 79 | 'status' => 'pending', |
| 80 | 'module_name' => $module, |
| 81 | ]); |
| 82 | |
| 83 | $response = $this->responseFactory->createResponse(200) |
| 84 | ->withHeader('Content-Type', self::CONTENT_TYPE_HTML); |
| 85 | $response->getBody()->write($html); |
| 86 | |
| 87 | return $response; |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Returns real-time status snippet for HTMX polling. |
| 92 | * |
| 93 | * @param int $queueId Batch queue job ID. |
| 94 | * @return ResponseInterface Progress bar or download button snippet. |
| 95 | */ |
| 96 | public function status(int $queueId): ResponseInterface |
| 97 | { |
| 98 | $job = $this->fetchJob($queueId); |
| 99 | if ($job === null) { |
| 100 | $response = $this->responseFactory->createResponse(404) |
| 101 | ->withHeader('Content-Type', self::CONTENT_TYPE_HTML); |
| 102 | $response->getBody()->write('<div class="alert alert-danger">Task not found.</div>'); |
| 103 | return $response; |
| 104 | } |
| 105 | |
| 106 | $status = (string)($job['status'] ?? 'pending'); |
| 107 | $percent = (int)($job['progress_percent'] ?? 0); |
| 108 | $total = (int)($job['total_count'] ?? 0); |
| 109 | $processed = (int)($job['processed_count'] ?? 0); |
| 110 | |
| 111 | if ($status === 'completed') { |
| 112 | $html = sprintf( |
| 113 | '<div class="text-center py-3">' |
| 114 | . '<div class="text-success display-4 mb-2">✔</div>' |
| 115 | . '<h4 class="text-success mb-1">Generation completed successfully!</h4>' |
| 116 | . '<p class="text-secondary mb-3">Successfully generated %d of %d documents.</p>' |
| 117 | . '<a href="/pdf/queue/download/%d" class="btn btn-success btn-lg shadow-sm">' |
| 118 | . 'Download ZIP archive</a></div>', |
| 119 | $processed, |
| 120 | $total, |
| 121 | $queueId |
| 122 | ); |
| 123 | } elseif ($status === 'failed') { |
| 124 | $err = htmlspecialchars((string)($job['error_message'] ?? 'Generation error'), ENT_QUOTES, 'UTF-8'); |
| 125 | $html = sprintf( |
| 126 | '<div class="alert alert-danger py-3 text-center">' |
| 127 | . '<h4 class="alert-title">An error occurred during bulk generation</h4>' |
| 128 | . '<p class="text-secondary mb-0">%s</p></div>', |
| 129 | $err |
| 130 | ); |
| 131 | } else { |
| 132 | // Trigger worker run and keep polling |
| 133 | $worker = new ProcessPdfQueueTask(null, $this->pdo); |
| 134 | $worker->run(); |
| 135 | |
| 136 | $html = sprintf( |
| 137 | '<div class="pdf-queue-poller" hx-get="/htmx/pdf/queue/status/%d" ' |
| 138 | . 'hx-trigger="load delay:1s" hx-swap="outerHTML">' |
| 139 | . '<div class="d-flex justify-content-between mb-2">' |
| 140 | . '<span class="fw-bold">Generating PDF documents...</span>' |
| 141 | . '<span class="text-secondary">%d%% (%d / %d)</span></div>' |
| 142 | . '<div class="progress progress-lg">' |
| 143 | . '<div class="progress-bar progress-bar-indeterminate bg-primary" ' |
| 144 | . 'style="width: %d%%" role="progressbar"></div></div>' |
| 145 | . '<small class="text-secondary d-block mt-2 text-center">' |
| 146 | . 'Task processing in the background. This window will update automatically.</small></div>', |
| 147 | $queueId, |
| 148 | $percent, |
| 149 | $processed, |
| 150 | $total, |
| 151 | max(5, $percent) |
| 152 | ); |
| 153 | } |
| 154 | |
| 155 | $response = $this->responseFactory->createResponse(200) |
| 156 | ->withHeader('Content-Type', self::CONTENT_TYPE_HTML); |
| 157 | $response->getBody()->write($html); |
| 158 | |
| 159 | return $response; |
| 160 | } |
| 161 | |
| 162 | /** |
| 163 | * Streams resulting ZIP archive for download: GET /pdf/queue/download/{queueId} |
| 164 | * |
| 165 | * @param int $queueId Batch queue job ID. |
| 166 | * @return ResponseInterface File download response. |
| 167 | */ |
| 168 | public function download(int $queueId): ResponseInterface |
| 169 | { |
| 170 | $job = $this->fetchJob($queueId); |
| 171 | $zipPath = (string)($job['result_zip_path'] ?? ''); |
| 172 | |
| 173 | if ($job === null || $zipPath === '' || !file_exists($zipPath)) { |
| 174 | $response = $this->responseFactory->createResponse(404) |
| 175 | ->withHeader('Content-Type', self::CONTENT_TYPE_HTML); |
| 176 | $response->getBody()->write('ZIP archive file does not exist.'); |
| 177 | return $response; |
| 178 | } |
| 179 | |
| 180 | $zipData = file_get_contents($zipPath) ?: ''; |
| 181 | $filename = 'ammonly_batch_' . $queueId . '.zip'; |
| 182 | |
| 183 | $response = $this->responseFactory->createResponse(200) |
| 184 | ->withHeader('Content-Type', 'application/zip') |
| 185 | ->withHeader('Content-Disposition', 'attachment; filename="' . $filename . '"') |
| 186 | ->withHeader('Content-Length', (string)strlen($zipData)) |
| 187 | ->withHeader('Cache-Control', 'no-store, no-cache, must-revalidate, max-age=0'); |
| 188 | |
| 189 | $response->getBody()->write($zipData); |
| 190 | |
| 191 | return $response; |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * Inserts new batch queue entry into database. |
| 196 | * |
| 197 | * @param int $templateId Template ID. |
| 198 | * @param string $module Module name. |
| 199 | * @param array<int> $recordIds Record IDs. |
| 200 | * @param int $totalCount Total records. |
| 201 | * @return int Inserted queue ID. |
| 202 | */ |
| 203 | private function insertQueueRecord(int $templateId, string $module, array $recordIds, int $totalCount): int |
| 204 | { |
| 205 | if ($this->pdo === null) { |
| 206 | return 1; |
| 207 | } |
| 208 | |
| 209 | $stmt = $this->pdo->prepare( |
| 210 | 'INSERT INTO `a_mod_pdf_queue_records` (' |
| 211 | . '`template_id`, `module_name`, `record_ids_json`, `status`, `total_count`, `scheduled_at`' |
| 212 | . ') VALUES (:tid, :mod, :json, :status, :tot, NOW(6))' |
| 213 | ); |
| 214 | $stmt->execute([ |
| 215 | ':tid' => $templateId, |
| 216 | ':mod' => $module, |
| 217 | ':json' => json_encode($recordIds, JSON_THROW_ON_ERROR), |
| 218 | ':status' => 'pending', |
| 219 | ':tot' => $totalCount, |
| 220 | ]); |
| 221 | |
| 222 | return (int)$this->pdo->lastInsertId(); |
| 223 | } |
| 224 | |
| 225 | /** |
| 226 | * Fetches job record by ID. |
| 227 | * |
| 228 | * @param int $queueId Queue ID. |
| 229 | * @return array<string, mixed>|null Job record dictionary or null. |
| 230 | */ |
| 231 | private function fetchJob(int $queueId): ?array |
| 232 | { |
| 233 | if ($this->pdo === null) { |
| 234 | return [ |
| 235 | 'status' => 'completed', |
| 236 | 'progress_percent' => 100, |
| 237 | 'total_count' => 5, |
| 238 | 'processed_count' => 5, |
| 239 | 'result_zip_path' => '', |
| 240 | ]; |
| 241 | } |
| 242 | |
| 243 | $stmt = $this->pdo->prepare( |
| 244 | 'SELECT `id`, `status`, `progress_percent`, `total_count`, `processed_count`, `result_zip_path`, ' |
| 245 | . '`error_message` FROM `a_mod_pdf_queue_records` WHERE `id` = :id LIMIT 1' |
| 246 | ); |
| 247 | $stmt->execute([':id' => $queueId]); |
| 248 | $row = $stmt->fetch(PDO::FETCH_ASSOC); |
| 249 | |
| 250 | return is_array($row) ? $row : null; |
| 251 | } |
| 252 | } |