pixel/admin/index.php

<?php
declare(strict_types=1);

$config = require dirname(__DIR__) . '/api/config.php';
$token = (string)($config['admin_token'] ?? '');
$given = (string)($_GET['token'] ?? $_POST['token'] ?? '');
$ownerFilter = clean_id($_GET['owner'] ?? $_POST['owner'] ?? '');
header('X-Content-Type-Options: nosniff');

function h($s): string { return htmlspecialchars((string)$s, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8'); }
function now_ms(): int { return (int)floor(microtime(true) * 1000); }
function clean_id($value): string { return substr(preg_replace('/[^A-Za-z0-9_:\-.]/', '', (string)$value) ?? '', 0, 96); }
function clean_text($value, string $fallback = '', int $max = 80): string {
    $text = trim((string)$value);
    $text = preg_replace('/[\x00-\x1F\x7F]/u', '', $text) ?? '';
    $text = preg_replace('/\s+/u', ' ', $text) ?? '';
    if ($text === '') $text = $fallback;
    return function_exists('mb_substr') ? mb_substr($text, 0, $max, 'UTF-8') : substr($text, 0, $max);
}
function data_dir(array $config): string { return dirname((string)$config['db_path']); }
function filedb_path(array $config): string { return data_dir($config) . DIRECTORY_SEPARATOR . 'pixel_island_filedb.json'; }
function sqlite_available(): bool { return class_exists('PDO') && in_array('sqlite', PDO::getAvailableDrivers(), true); }
function sqlite_tables_ready(PDO $db): bool {
    $stmt = $db->query("SELECT name FROM sqlite_master WHERE type='table' AND name IN ('accounts','assets','objects','reports')");
    $names = $stmt ? array_column($stmt->fetchAll(PDO::FETCH_ASSOC), 'name') : [];
    return in_array('accounts', $names, true) && in_array('assets', $names, true) && in_array('objects', $names, true) && in_array('reports', $names, true);
}
function choose_store(array $config): array {
    $sqlitePath = (string)$config['db_path'];
    if (sqlite_available() && is_file($sqlitePath)) return ['type' => 'sqlite', 'path' => $sqlitePath];
    $jsonPath = filedb_path($config);
    if (is_file($jsonPath)) return ['type' => 'filedb', 'path' => $jsonPath];
    if (sqlite_available()) return ['type' => 'sqlite_missing', 'path' => $sqlitePath];
    return ['type' => 'filedb_missing', 'path' => $jsonPath];
}
function redirect_admin(string $token, string $owner = ''): void {
    $url = './?token=' . rawurlencode($token);
    if ($owner !== '') $url .= '&owner=' . rawurlencode($owner);
    header('Location: ' . $url);
    exit;
}
function decode_json_value($json): array {
    if (is_array($json)) return $json;
    $decoded = json_decode((string)$json, true);
    return is_array($decoded) ? $decoded : [];
}
function encode_json_value(array $value): string {
    return json_encode($value, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES) ?: '{}';
}
function asset_name_from_json($json, string $fallback = 'Untitled'): string {
    $asset = decode_json_value($json);
    return (string)($asset['name'] ?? $fallback);
}
function thumbnail_html($json): string {
    $asset = decode_json_value($json);
    $pixels = (string)($asset['faces']['right'] ?? $asset['pixels'] ?? '');
    if ($pixels === '') return '<div class="thumb empty"></div>';
    $rows = str_contains($pixels, '|') ? explode('|', $pixels) : [];
    $width = max(1, min(64, (int)($asset['width'] ?? $asset['w'] ?? $asset['size'] ?? 16)));
    $height = max(1, min(64, (int)($asset['height'] ?? $asset['ht'] ?? $asset['size'] ?? $width)));
    if (!$rows) {
        for ($y = 0; $y < $height; $y++) $rows[] = substr($pixels, $y * $width, $width);
    }
    $codes = str_split('0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' . "!#$%&'()*+,-/:;<=>?@[]^_`{|}~");
    $colors = [
        '#111827', '#374151', '#6b7280', '#d1d5db', '#fff7ed',
        '#7f1d1d', '#dc2626', '#f97316', '#facc15', '#84cc16',
        '#16a34a', '#14b8a6', '#06b6d4', '#2563eb', '#4f46e5',
        '#7c3aed', '#c026d3', '#ec4899', '#f5d0a9', '#7c4a2d',
        '#fafafa', '#f5f5f4', '#e7e5e4', '#d6d3d1', '#a8a29e', '#78716c', '#57534e', '#292524', '#0c0a09',
        '#fef3c7', '#fde68a', '#d6a25f', '#9a6a3a', '#5c3b24',
        '#fee2e2', '#fca5a5', '#ef4444', '#b91c1c', '#7f1d1d',
        '#ffedd5', '#fdba74', '#f97316', '#c2410c', '#7c2d12',
        '#fef9c3', '#fde047', '#eab308', '#a16207', '#713f12',
        '#ecfccb', '#bef264', '#84cc16', '#4d7c0f', '#365314', '#dcfce7', '#86efac', '#15803d',
        '#ccfbf1', '#5eead4', '#14b8a6', '#0f766e', '#134e4a',
        '#cffafe', '#67e8f9', '#22d3ee', '#06b6d4', '#0e7490', '#e0f2fe', '#38bdf8',
        '#dbeafe', '#93c5fd', '#3b82f6', '#2563eb', '#1d4ed8', '#1e3a8a',
        '#e0e7ff', '#a5b4fc', '#6366f1', '#4f46e5', '#3730a3', '#ede9fe', '#c4b5fd', '#8b5cf6',
        '#fae8ff', '#e879f9', '#c026d3', '#86198f', '#fce7f3', '#f9a8d4', '#ec4899', '#be185d'
    ];
    $palette = array_combine($codes, array_slice($colors, 0, count($codes))) ?: [];
    $cells = '';
    foreach (array_slice($rows, 0, $height) as $y => $row) {
        $chars = preg_split('//u', (string)$row, -1, PREG_SPLIT_NO_EMPTY) ?: [];
        for ($x = 0; $x < $width; $x++) {
            $ch = $chars[$x] ?? '.';
            if ($ch === '.') continue;
            $color = $palette[$ch] ?? sprintf('#%06x', (hexdec(substr(md5($ch), 0, 6)) & 0x7fffff) | 0x303030);
            $cells .= '<i style="left:' . h(($x / $width) * 100) . '%;top:' . h(($y / $height) * 100) . '%;width:' . h(100 / $width) . '%;height:' . h(100 / $height) . '%;background:' . h($color) . '"></i>';
        }
    }
    return '<div class="thumb" style="--w:' . h($width) . ';--h:' . h($height) . '">' . $cells . '</div>';
}
function read_filedb(string $path): array {
    if (!is_file($path)) return [];
    $raw = file_get_contents($path);
    $db = $raw ? json_decode($raw, true) : null;
    return is_array($db) ? $db : [];
}
function write_filedb(string $path, callable $mutator): void {
    $dir = dirname($path);
    if (!is_dir($dir) && !mkdir($dir, 0775, true) && !is_dir($dir)) throw new RuntimeException('data directory unavailable');
    $fp = fopen($path, 'c+');
    if (!$fp) throw new RuntimeException('file db unavailable');
    try {
        if (!flock($fp, LOCK_EX)) throw new RuntimeException('file db lock failed');
        $raw = stream_get_contents($fp);
        $db = $raw ? json_decode($raw, true) : null;
        if (!is_array($db)) $db = ['schema'=>1,'accounts'=>[],'assets'=>[],'objects'=>[],'votes'=>[],'reports'=>[],'events'=>[],'commands'=>[],'nextEventId'=>1];
        $mutator($db);
        ftruncate($fp, 0);
        rewind($fp);
        fwrite($fp, encode_json_value($db));
        fflush($fp);
        flock($fp, LOCK_UN);
    } finally {
        fclose($fp);
    }
}
function sqlite_db(string $path): PDO {
    $db = new PDO('sqlite:' . $path, null, null, [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC]);
    $db->exec('PRAGMA busy_timeout = 5000');
    return $db;
}
function ensure_sqlite_anonymous_account(PDO $db): void {
    $now = now_ms();
    $hash = password_hash(bin2hex(random_bytes(16)), PASSWORD_DEFAULT);
    $db->prepare('INSERT OR IGNORE INTO accounts(id, name, password_hash, created_at, updated_at) VALUES(?,?,?,?,?)')
        ->execute(['anonymous', 'Anonymous', $hash, $now, $now]);
}
function list_sqlite_accounts(string $path): array {
    $db = sqlite_db($path);
    if (!sqlite_tables_ready($db)) return [];
    return $db->query("SELECT a.id, a.name, a.created_at, a.updated_at, a.disabled_at,
        (SELECT COUNT(*) FROM assets x WHERE x.owner_account_id = a.id AND x.deleted_at IS NULL) AS asset_count,
        (SELECT COUNT(*) FROM objects o WHERE o.owner_account_id = a.id AND o.deleted_at IS NULL) AS object_count,
        (SELECT COUNT(*) FROM reports r WHERE r.reporter_account_id = a.id AND r.status = 'open') AS open_report_count
        FROM accounts a ORDER BY a.created_at DESC LIMIT 500")->fetchAll() ?: [];
}
function list_sqlite_assets(string $path, string $owner = ''): array {
    $db = sqlite_db($path);
    if (!sqlite_tables_ready($db)) return [];
    $sql = "SELECT a.*, acc.name AS owner_name,
        (SELECT COUNT(*) FROM objects o WHERE o.asset_id = a.id AND o.deleted_at IS NULL) AS object_count
        FROM assets a LEFT JOIN accounts acc ON acc.id = a.owner_account_id WHERE a.deleted_at IS NULL";
    $params = [];
    if ($owner !== '') { $sql .= ' AND a.owner_account_id = ?'; $params[] = $owner; }
    $sql .= ' ORDER BY a.updated_at DESC LIMIT 500';
    $stmt = $db->prepare($sql);
    $stmt->execute($params);
    return array_map(function($row) {
        $asset = decode_json_value($row['json'] ?? '');
        return [
            'id' => $row['id'] ?? '',
            'owner_account_id' => $row['owner_account_id'] ?? '',
            'owner_name' => $row['owner_name'] ?? '',
            'name' => $asset['name'] ?? ($row['author_name'] ?? 'Untitled'),
            'json' => $row['json'] ?? '',
            'category' => $asset['category'] ?? '',
            'subtype' => $asset['subtype'] ?? '',
            'updated_at' => (int)($row['updated_at'] ?? 0),
            'object_count' => (int)($row['object_count'] ?? 0),
        ];
    }, $stmt->fetchAll() ?: []);
}
function list_sqlite_reports(string $path): array {
    $db = sqlite_db($path);
    if (!sqlite_tables_ready($db)) return [];
    $rows = $db->query("SELECT r.*, o.moderation_status, a.json AS asset_json FROM reports r LEFT JOIN objects o ON o.id = r.object_id LEFT JOIN assets a ON a.id = r.asset_id WHERE r.status = 'open' ORDER BY r.created_at DESC LIMIT 200")->fetchAll();
    return array_map(fn($r) => [
        'id' => $r['id'] ?? '',
        'object_id' => $r['object_id'] ?? '',
        'asset_id' => $r['asset_id'] ?? '',
        'reason' => $r['reason'] ?? '',
        'reporter' => $r['reporter_account_id'] ?? '',
        'created_at' => (int)($r['created_at'] ?? 0),
        'moderation_status' => $r['moderation_status'] ?? 'missing',
        'asset_name' => asset_name_from_json($r['asset_json'] ?? '', 'Untitled'),
        'asset_json' => $r['asset_json'] ?? '',
    ], $rows ?: []);
}
function apply_sqlite_admin_action(string $path, array $post): void {
    $db = sqlite_db($path);
    if (!sqlite_tables_ready($db)) return;
    $action = (string)($post['admin_action'] ?? $post['moderation_action'] ?? '');
    $now = now_ms();
    if ($action === 'rename_account') {
        $accountId = clean_id($post['account_id'] ?? '');
        $name = clean_text($post['name'] ?? '', '', 32);
        if ($accountId === '' || $name === '') return;
        $db->beginTransaction();
        $db->prepare('UPDATE accounts SET name = ?, updated_at = ? WHERE id = ?')->execute([$name, $now, $accountId]);
        $rows = $db->prepare('SELECT id, json FROM assets WHERE owner_account_id = ? AND deleted_at IS NULL');
        $rows->execute([$accountId]);
        foreach ($rows->fetchAll() ?: [] as $row) {
            $asset = decode_json_value($row['json']);
            $asset['author'] = $name;
            $asset['updatedAt'] = $now;
            $db->prepare('UPDATE assets SET author_name = ?, json = ?, updated_at = ? WHERE id = ?')->execute([$name, encode_json_value($asset), $now, $row['id']]);
        }
        $db->commit();
    } elseif ($action === 'disable_account' || $action === 'enable_account') {
        $accountId = clean_id($post['account_id'] ?? '');
        if ($accountId !== '') $db->prepare('UPDATE accounts SET disabled_at = ?, updated_at = ? WHERE id = ?')->execute([$action === 'disable_account' ? $now : null, $now, $accountId]);
    } elseif ($action === 'delete_account') {
        $accountId = clean_id($post['account_id'] ?? '');
        if ($accountId === '' || $accountId === 'island-team') return;
        $db->beginTransaction();
        ensure_sqlite_anonymous_account($db);
        $assetRows = $db->prepare('SELECT id, json FROM assets WHERE owner_account_id = ?');
        $assetRows->execute([$accountId]);
        foreach ($assetRows->fetchAll() ?: [] as $row) {
            $asset = decode_json_value($row['json'] ?? '');
            $asset['ownerAccountId'] = 'anonymous';
            $asset['author'] = 'Anonymous';
            $asset['updatedAt'] = $now;
            $db->prepare('UPDATE assets SET owner_account_id = ?, author_name = ?, json = ?, updated_at = ? WHERE id = ?')
                ->execute(['anonymous', 'Anonymous', encode_json_value($asset), $now, $row['id']]);
        }
        $objectRows = $db->prepare('SELECT id, json FROM objects WHERE owner_account_id = ?');
        $objectRows->execute([$accountId]);
        foreach ($objectRows->fetchAll() ?: [] as $row) {
            $object = decode_json_value($row['json'] ?? '');
            $object['ownerAccountId'] = 'anonymous';
            $db->prepare('UPDATE objects SET owner_account_id = ?, json = ?, updated_at = ? WHERE id = ?')
                ->execute(['anonymous', encode_json_value($object), $now, $row['id']]);
        }
        $db->prepare('DELETE FROM votes WHERE voter_account_id = ?')->execute([$accountId]);
        $db->prepare("UPDATE reports SET status = 'closed' WHERE reporter_account_id = ?")->execute([$accountId]);
        $db->prepare('DELETE FROM accounts WHERE id = ?')->execute([$accountId]);
        $db->commit();
    } elseif ($action === 'rename_asset') {
        $assetId = clean_id($post['asset_id'] ?? '');
        $name = clean_text($post['name'] ?? '', '', 32);
        if ($assetId === '' || $name === '') return;
        $stmt = $db->prepare('SELECT json FROM assets WHERE id = ? AND deleted_at IS NULL');
        $stmt->execute([$assetId]);
        $row = $stmt->fetch();
        if (!$row) return;
        $asset = decode_json_value($row['json']);
        $asset['name'] = $name;
        $asset['updatedAt'] = $now;
        $db->prepare('UPDATE assets SET json = ?, updated_at = ? WHERE id = ?')->execute([encode_json_value($asset), $now, $assetId]);
    } elseif ($action === 'delete_asset') {
        $assetId = clean_id($post['asset_id'] ?? '');
        if ($assetId === '') return;
        $db->beginTransaction();
        $db->prepare('UPDATE assets SET deleted_at = ?, deleted_by = ?, updated_at = ? WHERE id = ? AND deleted_at IS NULL')->execute([$now, 'admin', $now, $assetId]);
        $db->prepare('UPDATE objects SET deleted_at = ?, deleted_by = ?, updated_at = ? WHERE asset_id = ? AND deleted_at IS NULL')->execute([$now, 'admin', $now, $assetId]);
        $db->prepare('DELETE FROM votes WHERE target_type = ? AND target_id = ?')->execute(['asset', $assetId]);
        $db->commit();
    } elseif ($action === 'hide' || $action === 'restore' || $action === 'close_reports') {
        $objectId = clean_id($post['object_id'] ?? '');
        if ($objectId === '') return;
        if ($action === 'hide') $db->prepare("UPDATE objects SET moderation_status = 'violation_hidden', updated_at = ? WHERE id = ?")->execute([$now, $objectId]);
        elseif ($action === 'restore') $db->prepare("UPDATE objects SET moderation_status = 'active', updated_at = ? WHERE id = ?")->execute([$now, $objectId]);
        else $db->prepare("UPDATE reports SET status = 'closed' WHERE object_id = ?")->execute([$objectId]);
    }
}
function list_filedb_accounts(string $path): array {
    $db = read_filedb($path);
    $out = [];
    foreach (($db['accounts'] ?? []) as $account) {
        $id = (string)($account['id'] ?? '');
        $assets = 0; $objects = 0; $reports = 0;
        foreach (($db['assets'] ?? []) as $asset) if (($asset['owner_account_id'] ?? '') === $id && empty($asset['deleted_at'])) $assets++;
        foreach (($db['objects'] ?? []) as $object) if (($object['owner_account_id'] ?? '') === $id && empty($object['deleted_at'])) $objects++;
        foreach (($db['reports'] ?? []) as $report) if (($report['reporter_account_id'] ?? '') === $id && ($report['status'] ?? 'open') === 'open') $reports++;
        $out[] = ['id'=>$id, 'name'=>$account['name'] ?? $id, 'created_at'=>(int)($account['created_at'] ?? 0), 'updated_at'=>(int)($account['updated_at'] ?? 0), 'disabled_at'=>$account['disabled_at'] ?? null, 'asset_count'=>$assets, 'object_count'=>$objects, 'open_report_count'=>$reports];
    }
    usort($out, fn($a, $b) => ((int)$b['created_at']) <=> ((int)$a['created_at']));
    return array_slice($out, 0, 500);
}
function list_filedb_assets(string $path, string $owner = ''): array {
    $db = read_filedb($path);
    $accounts = $db['accounts'] ?? [];
    $out = [];
    foreach (($db['assets'] ?? []) as $asset) {
        if (!empty($asset['deleted_at'])) continue;
        if ($owner !== '' && ($asset['owner_account_id'] ?? '') !== $owner) continue;
        $id = (string)($asset['id'] ?? '');
        $json = decode_json_value($asset['json'] ?? []);
        $objectCount = 0;
        foreach (($db['objects'] ?? []) as $object) if (($object['asset_id'] ?? '') === $id && empty($object['deleted_at'])) $objectCount++;
        $ownerId = (string)($asset['owner_account_id'] ?? '');
        $out[] = ['id'=>$id, 'owner_account_id'=>$ownerId, 'owner_name'=>$accounts[$ownerId]['name'] ?? '', 'name'=>$json['name'] ?? 'Untitled', 'json'=>$asset['json'] ?? [], 'category'=>$json['category'] ?? '', 'subtype'=>$json['subtype'] ?? '', 'updated_at'=>(int)($asset['updated_at'] ?? 0), 'object_count'=>$objectCount];
    }
    usort($out, fn($a, $b) => ((int)$b['updated_at']) <=> ((int)$a['updated_at']));
    return array_slice($out, 0, 500);
}
function list_filedb_reports(string $path): array {
    $db = read_filedb($path);
    $out = [];
    foreach (($db['reports'] ?? []) as $r) {
        if (($r['status'] ?? 'open') !== 'open') continue;
        $asset = ($db['assets'] ?? [])[(string)($r['asset_id'] ?? '')] ?? [];
        $object = ($db['objects'] ?? [])[(string)($r['object_id'] ?? '')] ?? [];
        $out[] = ['id'=>$r['id'] ?? '', 'object_id'=>$r['object_id'] ?? '', 'asset_id'=>$r['asset_id'] ?? '', 'reason'=>$r['reason'] ?? '', 'reporter'=>$r['reporter_account_id'] ?? '', 'created_at'=>(int)($r['created_at'] ?? 0), 'moderation_status'=>$object['moderation_status'] ?? 'missing', 'asset_name'=>asset_name_from_json($asset['json'] ?? [], 'Untitled'), 'asset_json'=>$asset['json'] ?? []];
    }
    usort($out, fn($a, $b) => ((int)$b['created_at']) <=> ((int)$a['created_at']));
    return array_slice($out, 0, 200);
}
function apply_filedb_admin_action(string $path, array $post): void {
    write_filedb($path, function(array &$db) use ($post) {
        $action = (string)($post['admin_action'] ?? $post['moderation_action'] ?? '');
        $now = now_ms();
        $ensureAnonymous = function() use (&$db, $now): void {
            $db['accounts'] = is_array($db['accounts'] ?? null) ? $db['accounts'] : [];
            if (!isset($db['accounts']['anonymous'])) {
                $db['accounts']['anonymous'] = ['id'=>'anonymous','name'=>'Anonymous','password_hash'=>password_hash(bin2hex(random_bytes(16)), PASSWORD_DEFAULT),'created_at'=>$now,'updated_at'=>$now,'disabled_at'=>null];
            }
        };
        if ($action === 'rename_account') {
            $accountId = clean_id($post['account_id'] ?? '');
            $name = clean_text($post['name'] ?? '', '', 32);
            if ($accountId === '' || $name === '' || !isset($db['accounts'][$accountId])) return;
            $db['accounts'][$accountId]['name'] = $name;
            $db['accounts'][$accountId]['updated_at'] = $now;
            foreach ($db['assets'] as &$asset) {
                if (($asset['owner_account_id'] ?? '') !== $accountId || !empty($asset['deleted_at'])) continue;
                $asset['author_name'] = $name;
                $asset['updated_at'] = $now;
                $json = decode_json_value($asset['json'] ?? []);
                $json['author'] = $name;
                $json['updatedAt'] = $now;
                $asset['json'] = $json;
            }
            unset($asset);
        } elseif ($action === 'disable_account' || $action === 'enable_account') {
            $accountId = clean_id($post['account_id'] ?? '');
            if ($accountId !== '' && isset($db['accounts'][$accountId])) {
                $db['accounts'][$accountId]['disabled_at'] = $action === 'disable_account' ? $now : null;
                $db['accounts'][$accountId]['updated_at'] = $now;
            }
        } elseif ($action === 'delete_account') {
            $accountId = clean_id($post['account_id'] ?? '');
            if ($accountId === '' || $accountId === 'island-team') return;
            $ensureAnonymous();
            foreach ($db['assets'] as &$asset) if (($asset['owner_account_id'] ?? '') === $accountId) {
                $asset['owner_account_id'] = 'anonymous';
                $asset['author_name'] = 'Anonymous';
                $asset['updated_at'] = $now;
                $json = decode_json_value($asset['json'] ?? []);
                $json['ownerAccountId'] = 'anonymous';
                $json['author'] = 'Anonymous';
                $json['updatedAt'] = $now;
                $asset['json'] = $json;
            }
            unset($asset);
            foreach ($db['objects'] as &$object) if (($object['owner_account_id'] ?? '') === $accountId) {
                $object['owner_account_id'] = 'anonymous';
                $object['updated_at'] = $now;
                $json = decode_json_value($object['json'] ?? []);
                $json['ownerAccountId'] = 'anonymous';
                $object['json'] = $json;
            }
            unset($object);
            foreach ($db['reports'] as &$report) if (($report['reporter_account_id'] ?? '') === $accountId) $report['status'] = 'closed';
            unset($report);
            unset($db['accounts'][$accountId]);
            foreach ($db['votes'] as $key => $vote) if (($vote['voter_account_id'] ?? '') === $accountId) unset($db['votes'][$key]);
        } elseif ($action === 'rename_asset') {
            $assetId = clean_id($post['asset_id'] ?? '');
            $name = clean_text($post['name'] ?? '', '', 32);
            if ($assetId === '' || $name === '' || !isset($db['assets'][$assetId])) return;
            $json = decode_json_value($db['assets'][$assetId]['json'] ?? []);
            $json['name'] = $name;
            $json['updatedAt'] = $now;
            $db['assets'][$assetId]['json'] = $json;
            $db['assets'][$assetId]['updated_at'] = $now;
        } elseif ($action === 'delete_asset') {
            $assetId = clean_id($post['asset_id'] ?? '');
            if ($assetId === '' || !isset($db['assets'][$assetId])) return;
            $db['assets'][$assetId]['deleted_at'] = $now;
            $db['assets'][$assetId]['deleted_by'] = 'admin';
            $db['assets'][$assetId]['updated_at'] = $now;
            foreach ($db['objects'] as &$object) if (($object['asset_id'] ?? '') === $assetId && empty($object['deleted_at'])) { $object['deleted_at'] = $now; $object['deleted_by'] = 'admin'; $object['updated_at'] = $now; }
            unset($object);
            foreach ($db['votes'] as $key => $vote) if (($vote['target_type'] ?? '') === 'asset' && ($vote['target_id'] ?? '') === $assetId) unset($db['votes'][$key]);
        } elseif ($action === 'hide' || $action === 'restore' || $action === 'close_reports') {
            $objectId = clean_id($post['object_id'] ?? '');
            if ($objectId === '') return;
            if (($action === 'hide' || $action === 'restore') && isset($db['objects'][$objectId])) {
                $db['objects'][$objectId]['moderation_status'] = $action === 'hide' ? 'violation_hidden' : 'active';
                $db['objects'][$objectId]['updated_at'] = $now;
            } elseif ($action === 'close_reports') {
                foreach ($db['reports'] as &$report) if (($report['object_id'] ?? '') === $objectId) $report['status'] = 'closed';
                unset($report);
            }
        }
    });
}

if ($token === '') {
    http_response_code(403);
    echo '<!doctype html><meta charset="utf-8"><title>Admin disabled</title><h1>Admin disabled</h1>';
    exit;
}
if (!hash_equals($token, $given)) {
    http_response_code(403);
    echo '<!doctype html><meta charset="utf-8"><title>Forbidden</title><h1>Forbidden</h1><p>Invalid admin token.</p>';
    exit;
}

$store = choose_store($config);
$error = '';
$accounts = [];
$assets = [];
$reports = [];
try {
    if ($_SERVER['REQUEST_METHOD'] === 'POST') {
        if ($store['type'] === 'sqlite') apply_sqlite_admin_action($store['path'], $_POST);
        elseif ($store['type'] === 'filedb') apply_filedb_admin_action($store['path'], $_POST);
        redirect_admin($given, clean_id($_POST['owner'] ?? ''));
    }
    if ($store['type'] === 'sqlite') {
        $accounts = list_sqlite_accounts($store['path']);
        $assets = list_sqlite_assets($store['path'], $ownerFilter);
        $reports = list_sqlite_reports($store['path']);
    } elseif ($store['type'] === 'filedb') {
        $accounts = list_filedb_accounts($store['path']);
        $assets = list_filedb_assets($store['path'], $ownerFilter);
        $reports = list_filedb_reports($store['path']);
    }
} catch (Throwable $e) {
    $error = $e->getMessage();
}
$storeLabel = $store['type'] === 'sqlite' ? 'SQLite' : ($store['type'] === 'filedb' ? 'JSON file DB' : 'DB not initialized yet');
$baseUrl = './?token=' . rawurlencode($given);
?>
<!doctype html>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Pixel Island Admin</title>
<script>
document.addEventListener('submit', () => {
  try { sessionStorage.setItem('pixel-admin-scroll', String(window.scrollY || 0)); } catch (error) {}
});
window.addEventListener('load', () => {
  try {
    const y = Number(sessionStorage.getItem('pixel-admin-scroll') || 0);
    sessionStorage.removeItem('pixel-admin-scroll');
    if (y > 0) requestAnimationFrame(() => scrollTo(0, y));
  } catch (error) {}
});
</script>
<style>
body{font-family:system-ui,sans-serif;margin:24px;background:#f7f4ea;color:#2b2b2b}h1{margin-bottom:4px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(380px,1fr));gap:12px}.card{background:#fff;border:1px solid #ddd;border-radius:10px;padding:14px;margin:10px 0}.media{display:flex;gap:14px;align-items:flex-start}.muted{color:#666;font-size:13px}.error{background:#fff1f1;border:1px solid #e3aaaa;padding:12px;border-radius:8px}code{background:#eee;padding:1px 4px;border-radius:4px}input{max-width:210px;padding:6px;margin:2px 4px 2px 0}button{margin:2px 4px 2px 0;padding:6px 9px;border:1px solid #bbb;border-radius:6px;background:#f5f5f5}.danger{background:#b92323;color:white;border:0}.ok{background:#267a3e;color:white;border:0}.warn{background:#8b5b00;color:white;border:0}.pill{display:inline-block;padding:2px 7px;border-radius:999px;background:#eee;font-size:12px}.nav a{margin-right:10px}.thumb{position:relative;flex:0 0 auto;width:128px;height:128px;background:#f2eadb;border:1px solid #ddd;image-rendering:pixelated;overflow:hidden}.thumb i{position:absolute;transform:scale(1.02);transform-origin:0 0}.thumb.empty:after{content:'no image';position:absolute;inset:0;display:grid;place-items:center;color:#777;font-size:11px}@media(max-width:520px){.grid{grid-template-columns:1fr}.media{flex-direction:column}.thumb{width:112px;height:112px}}
</style>
<h1>Pixel Island Admin</h1>
<p class="muted">Store: <?=h($storeLabel)?> / Users: <?=count($accounts)?> / Pictures: <?=count($assets)?> / Reports: <?=count($reports)?></p>
<p class="nav"><a href="#accounts">Users</a><a href="#pictures">Pictures</a><a href="#reports">Reports</a><?php if ($ownerFilter !== ''): ?><a href="<?=h($baseUrl)?>">Show all</a><?php endif; ?></p>
<?php if ($error): ?><p class="error">Admin error: <?=h($error)?></p><?php endif; ?>
<?php if ($store['type'] === 'sqlite_missing' || $store['type'] === 'filedb_missing'): ?>
  <p class="muted">No DB has been initialized yet. Open <code>../api/index.php?action=health</code> and use the app once, then return here.</p>
<?php endif; ?>

<h2 id="accounts">Users</h2>
<div class="grid">
<?php foreach ($accounts as $a): ?>
  <div class="card">
    <h3><?=h($a['name'] ?? $a['id'])?> <?php if (!empty($a['disabled_at'])): ?><span class="pill">disabled</span><?php endif; ?></h3>
    <p class="muted">ID: <code><?=h($a['id'] ?? '')?></code> / Pictures: <?=h($a['asset_count'] ?? 0)?> / Objects: <?=h($a['object_count'] ?? 0)?> / Reports: <?=h($a['open_report_count'] ?? 0)?></p>
    <p><a href="<?=h($baseUrl . '&owner=' . rawurlencode((string)($a['id'] ?? '')))?>">Pictures</a></p>
    <form method="post">
      <input type="hidden" name="token" value="<?=h($given)?>">
      <input type="hidden" name="owner" value="<?=h($ownerFilter)?>">
      <input type="hidden" name="account_id" value="<?=h($a['id'] ?? '')?>">
      <input name="name" value="<?=h($a['name'] ?? '')?>" maxlength="32">
      <button class="ok" name="admin_action" value="rename_account">Save</button>
      <?php if (empty($a['disabled_at'])): ?><button class="warn" name="admin_action" value="disable_account">Disable</button><?php else: ?><button class="ok" name="admin_action" value="enable_account">Enable</button><?php endif; ?>
      <?php if (($a['id'] ?? '') !== 'island-team' && ($a['id'] ?? '') !== 'anonymous'): ?><button class="danger" name="admin_action" value="delete_account" onclick="return confirm('Delete this user? Their pictures become Anonymous.')">Delete</button><?php endif; ?>
    </form>
  </div>
<?php endforeach; ?>
</div>
<?php if (!$accounts): ?><p>No accounts.</p><?php endif; ?>

<h2 id="pictures">Pictures<?= $ownerFilter !== '' ? ' by ' . h($ownerFilter) : '' ?></h2>
<div class="grid">
<?php foreach ($assets as $asset): ?>
  <div class="card">
    <div class="media">
      <?=thumbnail_html($asset['json'] ?? [])?>
      <div>
        <h3><?=h($asset['name'] ?? 'Untitled')?></h3>
        <p class="muted">ID: <code><?=h($asset['id'] ?? '')?></code><br>User: <code><?=h($asset['owner_account_id'] ?? '')?></code> <?=h($asset['owner_name'] ?? '')?><br>Type: <?=h(trim(($asset['category'] ?? '') . ' ' . ($asset['subtype'] ?? '')))?> / Uses: <?=h($asset['object_count'] ?? 0)?></p>
        <form method="post">
          <input type="hidden" name="token" value="<?=h($given)?>">
          <input type="hidden" name="owner" value="<?=h($ownerFilter)?>">
          <input type="hidden" name="asset_id" value="<?=h($asset['id'] ?? '')?>">
          <input name="name" value="<?=h($asset['name'] ?? '')?>" maxlength="32">
          <button class="ok" name="admin_action" value="rename_asset">Save</button>
          <button class="danger" name="admin_action" value="delete_asset" onclick="return confirm('Delete this picture?')">Delete</button>
        </form>
      </div>
    </div>
  </div>
<?php endforeach; ?>
</div>
<?php if (!$assets): ?><p>No pictures in this view.</p><?php endif; ?>

<h2 id="reports">Reports</h2>
<?php foreach ($reports as $r): ?>
  <div class="card">
    <div class="media">
      <?=thumbnail_html($r['asset_json'] ?? [])?>
      <div>
        <h3><?=h($r['asset_name'] ?? 'Untitled')?></h3>
        <p><strong>Reason:</strong> <?=h($r['reason'] ?? '')?> / <strong>By:</strong> <?=h($r['reporter'] ?? '')?></p>
        <p class="muted">Object: <code><?=h($r['object_id'] ?? '')?></code> / Asset: <code><?=h($r['asset_id'] ?? '')?></code> / Status: <code><?=h($r['moderation_status'] ?? 'missing')?></code></p>
        <form method="post">
          <input type="hidden" name="token" value="<?=h($given)?>">
          <input type="hidden" name="owner" value="<?=h($ownerFilter)?>">
          <input type="hidden" name="object_id" value="<?=h($r['object_id'] ?? '')?>">
          <button class="danger" name="admin_action" value="hide">Hide</button>
          <button class="ok" name="admin_action" value="restore">Restore</button>
          <button name="admin_action" value="close_reports">Close</button>
        </form>
      </div>
    </div>
  </div>
<?php endforeach; ?>
<?php if (!$reports): ?><p>No open reports.</p><?php endif; ?>