<?php
/**
 * /api/release-check.php · Release management for multi-Opus coordination
 * Detects recent commits (last 15 min) by other Claude instances to avoid:
 *   - Doublons
 *   - Régressions
 *   - Pertes de code
 * Yacine Mahboub · WEVAL Consulting · 18avr2026
 */
header('Content-Type: application/json; charset=utf-8');
header('Cache-Control: no-store');

$REPO = '/var/www/html';
$WINDOW_MIN = (int)($_GET['window'] ?? 15);

$out = [
  'ok' => true,
  'ts' => date('c'),
  'window_min' => $WINDOW_MIN,
  'recent_commits' => [],
  'other_opus_commits' => [],
  'playwright_latest' => [],
  'conflicts' => [],
  'advice' => []
];

// Recent commits (last N minutes)
$since = date('Y-m-d\TH:i:s', time() - $WINDOW_MIN * 60);
$cmd = "cd $REPO && git log --since=\"$since\" --pretty=format:'%h|%an|%at|%s' 2>&1 | head -30";
$logs = @shell_exec($cmd);
if ($logs) {
  foreach (explode("\n", trim($logs)) as $line) {
    if (!$line) continue;
    $parts = explode('|', $line, 4);
    if (count($parts) < 4) continue;
    $c = [
      'hash' => $parts[0],
      'author' => $parts[1],
      'ts' => date('c', (int)$parts[2]),
      'subject' => $parts[3]
    ];
    $out['recent_commits'][] = $c;
    // Flag commits from other Opus (contains "Opus" or starts with version-like)
    if (preg_match('/\b(Opus|opus|V\d+|D9\d|B\d+|autre)/', $parts[3]) 
        && !preg_match('/^auto-(sync|commit)/', $parts[3])) {
      $out['other_opus_commits'][] = $c;
    }
  }
}

// Playwright latest results
foreach (['playwright-dsh-predict-latest.json', 'playwright-latest-e2e.json'] as $f) {
  $p = "$REPO/api/$f";
  if (is_file($p)) {
    $d = @json_decode(@file_get_contents($p), true);
    if (is_array($d)) {
      $pages = $d['pages'] ?? [];
      $out['playwright_latest'][$f] = [
        'ts' => $d['ts'] ?? '?',
        'total_pages' => count($pages),
        'pass' => count(array_filter($pages, fn($p)=>($p['status']??'')==='PASS')),
        'fail' => count(array_filter($pages, fn($p)=>($p['status']??'')==='FAIL'))
      ];
    }
  }
}

// Detect potential conflicts: files modified by multiple recent commits
$conflictCmd = "cd $REPO && git log --since=\"$since\" --name-only --pretty=format:'' 2>&1 | grep -v '^$' | sort | uniq -c | sort -rn | head -10";
$conflictOut = @shell_exec($conflictCmd);
if ($conflictOut) {
  foreach (explode("\n", trim($conflictOut)) as $line) {
    $line = trim($line);
    if (!$line) continue;
    if (preg_match('/^(\d+)\s+(.+)$/', $line, $m)) {
      $count = (int)$m[1];
      $file = $m[2];
      if ($count >= 2) {
        $out['conflicts'][] = ['file' => $file, 'modification_count' => $count];
      }
    }
  }
}

// Advice
if (count($out['other_opus_commits']) > 0) {
  $out['advice'][] = count($out['other_opus_commits']) . " other Opus commit(s) in last {$WINDOW_MIN}min - pull before new work";
}
if (count($out['conflicts']) > 0) {
  $out['advice'][] = "Files modified by multiple commits: review to avoid doublons";
}
$pending_stubs = @glob('/var/www/html/api/wired-pending/intent-opus4-*.php');
$out['pending_stubs_count'] = count($pending_stubs ?: []);
if (count($pending_stubs ?: []) > 120) {
  $out['advice'][] = "Pending stubs = " . count($pending_stubs) . " (hig) - consider approving or purging";
}
if (empty($out['advice'])) {
  $out['advice'][] = "No conflicts detected - safe to commit";
}

echo json_encode($out, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);