Upload web/src/controllers/DocumentController.php with huggingface_hub

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	<?php

	declare(strict_types=1);

	class DocumentController
	{
	/**
	* Show a single document with its page list, entity summary, and PDF viewer.
	*/
	public function show(string $id): void
	{
	$docId = Security::validateId($id);
	if ($docId === false) {
	http_response_code(400);
	echo '<!DOCTYPE html><html><head><title>Bad Request</title></head>';
	echo '<body><h1>400 — Invalid Document ID</h1></body></html>';
	return;
	}

	$docModel = new Document();
	$document = $docModel->findById($docId);

	if ($document === null) {
	http_response_code(404);
	echo '<!DOCTYPE html><html><head><title>Not Found</title></head>';
	echo '<body><h1>404 — Document Not Found</h1></body></html>';
	return;
	}

	// Page metadata (not full text)
	$pageModel = new Page();
	$pages = $pageModel->getByDocument($docId);

	// Entity summary: count by entity type for this document
	$db = Database::getInstance();
	$entities = [];
	try {
	$entities = $db->fetchAll(
	'SELECT entity_type, COUNT(*)::int AS entity_count,
	array_agg(DISTINCT entity_text ORDER BY entity_text) AS examples
	FROM entities
	WHERE document_id = :docId
	GROUP BY entity_type
	ORDER BY entity_count DESC',
	['docId' => $docId]
	);
	} catch (\PDOException $e) {
	// Entities table may be empty or not fully populated
	}

	// Crisis events for this document
	$crisisEvents = [];
	try {
	$eventModel = new Event();
	$crisisEvents = $eventModel->getForDocument($docId);
	} catch (\PDOException $e) {
	// Table may not exist yet
	}

	// Topic classifications
	$topics = [];
	try {
	$topics = $db->fetchAll(
	"SELECT feature_json FROM document_features
	WHERE document_id = :docId AND feature_name = 'topic_distribution'",
	['docId' => $docId]
	);
	if (!empty($topics[0]['feature_json'])) {
	$topicData = json_decode($topics[0]['feature_json'], true) ?: [];
	arsort($topicData);
	$topics = $topicData;
	} else {
	$topics = [];
	}
	} catch (\PDOException $e) {
	$topics = [];
	}

	// Keywords
	$keywords = [];
	try {
	$keywords = $db->fetchAll(
	'SELECT keyword, score FROM document_keywords
	WHERE document_id = :docId AND keyword != :placeholder
	ORDER BY score DESC LIMIT 15',
	['docId' => $docId, 'placeholder' => '_no_keywords_']
	);
	} catch (\PDOException $e) {
	$keywords = [];
	}

	// Forensic metadata, redaction summary, sentiment
	$forensic = [];
	$redactionSummary = null;
	$sentiment = null;
	try {
	$forensicRows = $db->fetchAll(
	"SELECT feature_name, feature_json FROM document_features
	WHERE document_id = :docId AND feature_name IN ('forensic_metadata', 'redaction_summary', 'sentiment')",
	['docId' => $docId]
	);
	foreach ($forensicRows as $row) {
	if ($row['feature_name'] === 'forensic_metadata') {
	$forensic = json_decode($row['feature_json'], true) ?: [];
	} elseif ($row['feature_name'] === 'redaction_summary') {
	$redactionSummary = json_decode($row['feature_json'], true) ?: [];
	} elseif ($row['feature_name'] === 'sentiment') {
	$sentiment = json_decode($row['feature_json'], true) ?: [];
	}
	}
	} catch (\PDOException $e) {
	// Not available yet
	}

	// PDF viewer URL
	$pdfUrl = '/pdf/' . $docId;
	$viewerUrl = '/assets/vendor/pdfjs/web/viewer.html?file=' . urlencode($pdfUrl);

	require __DIR__ . '/../views/document.php';
	}
	}