<?php
/**
 * Preview: php scripts/news-review.php
 * Apply:   php scripts/news-review.php --apply
 * Uses saved category settings; changes only review_status and appends audit logs.
 */
if (PHP_SAPI !== 'cli') {
    http_response_code(403);
    exit('CLI only');
}
require dirname(__DIR__).'/vendor/autoload.php';
$app = require dirname(__DIR__).'/bootstrap/app.php';
$app->make(Illuminate\Contracts\Console\Kernel::class)->bootstrap();

use Illuminate\Support\Facades\DB;

$arguments = array_slice($argv, 1);
if (array_diff($arguments, ['--apply'])) {
    fwrite(STDERR, "用法：php scripts/news-review.php [--apply]\n");
    exit(1);
}
$apply = in_array('--apply', $arguments, true);
try {
    $result = DB::transaction(function () use ($apply) {
        // Same lock as the collector: prevents collection starting during the update.
        $control = DB::table('company_news_control')->where('id', 1)->lockForUpdate()->first();
        if (!$control) throw new RuntimeException('缺少采集控制记录，请先执行迁移');
        if ($control->active_batch_id) throw new RuntimeException('存在未完成的采集批次，请先完成该批次');
        $settings = DB::table('company_news_settings')->where('id', 1)->lockForUpdate()->first();
        $codes = json_decode($settings->retained_categories ?? '[]', true, 512, JSON_THROW_ON_ERROR);
        if (!is_array($codes) || !$codes) throw new RuntimeException('尚未选择留存分类，请先保存分类设置');
        foreach ($codes as $code) {
            if (!is_string($code)) throw new RuntimeException('分类代码格式异常，未执行更新');
        }
        $counts = ['categories' => count(array_unique($codes)), 'total' => 0, 'retained' => 0, 'discarded' => 0, 'changed' => 0];
        $query = DB::table('company_news')->select('id', 'categories', 'review_status')->orderBy('id');
        if ($apply) $query->lockForUpdate();
        $query->chunkById(200, function ($rows) use ($codes, $apply, &$counts) {
            foreach ($rows as $row) {
                $categories = json_decode($row->categories ?? '[]', true, 512, JSON_THROW_ON_ERROR) ?? [];
                if (!is_array($categories)) throw new RuntimeException('新闻 '.$row->id.' 分类格式异常，已取消本次操作');
                $status = array_intersect(array_column($categories, 'code'), $codes) ? 'retained' : 'discarded';
                $counts['total']++;
                $counts[$status]++;
                if ($row->review_status === $status) continue;
                $counts['changed']++;
                if (!$apply) continue;
                DB::table('company_news')->where('id', $row->id)->update(['review_status' => $status]);
                DB::table('company_news_logs')->insert([
                    'news_id' => $row->id, 'actor_id' => null, 'action' => 'review',
                    'detail' => json_encode([
                        'source' => 'news-review.php：按保存的分类设置批量更新',
                        'from' => $row->review_status, 'to' => $status, 'category_codes' => $codes,
                    ], JSON_UNESCAPED_UNICODE | JSON_THROW_ON_ERROR),
                    'created_at' => now(),
                ]);
            }
        });
        return $counts;
    });
    echo $apply ? "更新完成\n" : "仅预览，未修改任何新闻\n";
    echo "已选分类：{$result['categories']}\n新闻总数：{$result['total']}\n分类后已留存：{$result['retained']}\n分类后不留存：{$result['discarded']}\n";
    echo ($apply ? '实际修改：' : '预计修改：').$result['changed']."\n";
    if (!$apply) echo "确认后执行：php scripts/news-review.php --apply\n";
} catch (Throwable $error) {
    fwrite(STDERR, '执行失败：'.$error->getMessage()."\n");
    exit(1);
}