datamatters24
/

research-document-archive

+<?php
+declare(strict_types=1);
+class BrowseController
+{
+    /**
+     * List all collections with their document counts.
+     */
+    public function index(): void
+    {
+        // /browse with no collection — redirect to home which shows all collections
+        header('Location: /');
+        http_response_code(302);
+    }
+    /**
+     * Display a paginated list of documents within a specific collection.
+     */
+    public function collection(string $collection): void
+    {
+        $collection = Security::sanitize($collection);
+        // Validate the collection name against known sections
+        $validCollections = [
+            'jfk_assassination',
+            'cia_declassified',
+            'cia_stargate',
+            'cia_mkultra',
+            'lincoln_archives',
+            'house_resolutions',
+            'doj_disclosures',
+            'nasa_apod',
+            'nasa_epic',
+            'area51_cia',
+            'court_records',
+            'foia',
+            'house_oversight',
+        ];
+        if (!in_array($collection, $validCollections, true)) {
+            http_response_code(404);
+            echo '<!DOCTYPE html><html><head><title>Not Found</title></head>';
+            echo '<body><h1>404 &mdash; Collection Not Found</h1></body></html>';
+            return;
+        }
+        $config  = require __DIR__ . '/../config.php';
+        $perPage = $config['app']['per_page'];
+        // Pagination
+        $page   = max(1, (int) ($_GET['page'] ?? 1));
+        $offset = ($page - 1) * $perPage;
+        // Sort
+        $sort = $_GET['sort'] ?? 'processed_at';
+        $sort = Security::sanitize($sort);
+        $collectionNames = [
+            'jfk_assassination'  => 'JFK Assassination Records',
+            'cia_declassified'   => 'CIA Declassified',
+            'cia_stargate'       => 'CIA Stargate Program',
+            'cia_mkultra'        => 'CIA MKUltra',
+            'lincoln_archives'   => 'Lincoln Archives',
+            'house_resolutions'  => 'House Resolutions',
+            'nasa_apod'          => 'NASA APOD',
+            'nasa_epic'          => 'NASA EPIC',
+            'area51_cia'         => 'Area 51 / CIA Declassified',
+            'court_records'      => 'Court Records',
+            'foia'               => 'FOIA Releases',
+            'house_oversight'    => 'House Oversight',
+        ];
+        $collectionName = $collectionNames[$collection] ?? ucwords(str_replace('_', ' ', $collection));
+        $docModel   = new Document();
+        $documents  = $docModel->getByCollection($collection, $perPage, $offset, $sort);
+        $total      = $docModel->countByCollection($collection);
+        $totalPages = (int) ceil($total / $perPage);
+        // Attach top topic to each document
+        if (!empty($documents)) {
+            $db = Database::getInstance();
+            $docIds = array_column($documents, 'id');
+            $placeholders = implode(',', array_fill(0, count($docIds), '?'));
+            try {
+                $topicRows = $db->fetchAll(
+                    "SELECT document_id, feature_json FROM document_features
+                     WHERE document_id IN ($placeholders) AND feature_name = 'topic_distribution'",
+                    $docIds
+                );
+                $topicMap = [];
+                foreach ($topicRows as $row) {
+                    $data = json_decode($row['feature_json'], true) ?: [];
+                    arsort($data);
+                    $top = array_slice($data, 0, 2, true);
+                    $topicMap[$row['document_id']] = $top;
+                }
+                foreach ($documents as &$doc) {
+                    $doc['topics'] = $topicMap[$doc['id']] ?? [];
+                }
+                unset($doc);
+            } catch (\PDOException $e) {
+                // Topics not available yet
+            }
+        }
+        require __DIR__ . '/../views/browse.php';
+    }
+}