<?php
// opus-arch-self-refactor.php - Cap 9 (Doctrine 95)
header('Content-Type: application/json');
$action = $_GET['action'] ?? 'status';
$sandbox = '/opt/weval-ops/refactor-sandbox';

if ($action === 'status') {
    echo json_encode([
        'ok'=>true,
        'sandbox_exists'=>is_dir($sandbox),
        'docker_available'=>!empty(shell_exec('which docker 2>/dev/null')),
        'note'=>'Self-refactor requires Docker sandbox + nonreg validator. Use action=propose to queue refactor.',
    ]); exit;
}
if ($action === 'propose') {
    $description = $_POST['description'] ?? '';
    $target = $_POST['target'] ?? '';
    if (!$description || !$target) { echo json_encode(['ok'=>false,'error'=>'description+target required']); exit; }
    $queue = $sandbox . '/queue.json';
    @mkdir($sandbox, 0755, true);
    $q = file_exists($queue) ? json_decode(file_get_contents($queue), true) : [];
    $q[] = ['id'=>uniqid(), 'ts'=>date('c'), 'description'=>$description, 'target'=>$target, 'status'=>'pending'];
    file_put_contents($queue, json_encode($q, JSON_PRETTY_PRINT));
    echo json_encode(['ok'=>true, 'queued'=>count($q)]); exit;
}
if ($action === 'queue') {
    $queue = $sandbox . '/queue.json';
    echo json_encode(['ok'=>true, 'queue'=>file_exists($queue) ? json_decode(file_get_contents($queue), true) : []]); exit;
}
echo json_encode(['ok'=>false, 'actions'=>['status','propose','queue']]);