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<?php
/**
* 文件功能:定期清理聊天记录 Artisan 命令
*
* 每天自动清理超过指定天数的聊天记录,保持数据库体积可控。
* 保留天数可通过 sysparam 表的 message_retention_days 配置,默认 30 天。
*
* @author ChatRoom Laravel
*
* @version 1.0.0
*/
namespace App\Console\Commands;
use App\Models\Message;
use App\Models\Sysparam;
use Carbon\Carbon;
use Illuminate\Console\Command;
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use Illuminate\Support\Facades\Storage;
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/**
* 定期清理聊天记录命令
* 负责删除过期文本消息,并额外回收聊天图片文件。
*/
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class PurgeOldMessages extends Command
{
/**
* 命令签名
*
* @var string
*/
protected $signature = 'messages:purge
{--days= : 覆盖默认保留天数}
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{--image-days=3 : 聊天图片单独保留天数}
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{--dry-run : 仅预览不实际删除}';
/**
* 命令描述
*
* @var string
*/
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protected $description = '清理过期聊天记录,并额外清理 3 天前的聊天图片文件';
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/**
* 执行命令
*
* 按批次删除旧消息,避免长时间锁表。
*/
public function handle(): int
{
// 保留天数:命令行参数 > sysparam 配置 > 默认 30 天
$days = (int) ($this->option('days')
?: Sysparam::getValue('message_retention_days', '30'));
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$imageDays = max(0, (int) $this->option('image-days'));
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$cutoff = Carbon::now()->subDays($days);
$isDryRun = $this->option('dry-run');
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$this->cleanupExpiredImages($imageDays, $isDryRun);
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// 统计待清理数量
$totalCount = Message::where('sent_at', '<', $cutoff)->count();
if ($totalCount === 0) {
$this->info("✅ 没有超过 {$days} 天的聊天记录需要清理。");
return self::SUCCESS;
}
if ($isDryRun) {
$this->warn("🔍 [预览模式] 将删除 {$totalCount} 条超过 {$days} 天的聊天记录(截止 {$cutoff->toDateTimeString()}");
return self::SUCCESS;
}
$this->info("🧹 开始清理超过 {$days} 天的聊天记录(截止 {$cutoff->toDateTimeString()}...");
$this->info(" 待清理数量:{$totalCount}");
// 分批删除,每批 1000 条,避免长时间锁表
$deleted = 0;
$batchSize = 1000;
do {
$batch = Message::where('sent_at', '<', $cutoff)
->limit($batchSize)
->delete();
$deleted += $batch;
if ($batch > 0) {
$this->line(" 已删除 {$deleted}/{$totalCount} 条...");
}
} while ($batch === $batchSize);
$this->info("✅ 清理完成!共删除 {$deleted} 条聊天记录。");
return self::SUCCESS;
}
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/**
* 清理超过图片保留天数的聊天图片文件,并把消息改成过期占位。
*/
private function cleanupExpiredImages(int $imageDays, bool $isDryRun): void
{
$imageCutoff = Carbon::now()->subDays($imageDays);
$query = Message::query()
->where('message_type', 'image')
->where('sent_at', '<', $imageCutoff)
->where(function ($builder) {
$builder->whereNotNull('image_path')->orWhereNotNull('image_thumb_path');
});
$totalCount = (clone $query)->count();
if ($totalCount === 0) {
$this->line("🖼️ 没有超过 {$imageDays} 天的聊天图片需要清理。");
return;
}
if ($isDryRun) {
$this->warn("🔍 [预览模式] 将清理 {$totalCount} 条超过 {$imageDays} 天的聊天图片(截止 {$imageCutoff->toDateTimeString()}");
return;
}
$processed = 0;
$query->orderBy('id')->chunkById(200, function ($messages) use (&$processed) {
foreach ($messages as $message) {
$paths = array_values(array_filter([
$message->image_path,
$message->image_thumb_path,
]));
// 先删物理文件,再把数据库消息降级成“图片已过期”占位,避免出现坏图。
if ($paths !== []) {
Storage::disk('public')->delete($paths);
}
$placeholder = trim((string) $message->content);
$placeholder = $placeholder !== '' ? $placeholder.' [图片已过期]' : '[图片已过期]';
$message->forceFill([
'content' => $placeholder,
'message_type' => 'expired_image',
'image_path' => null,
'image_thumb_path' => null,
'image_original_name' => null,
])->save();
$processed++;
}
});
$this->info("🖼️ 已清理 {$processed} 条超过 {$imageDays} 天的聊天图片。");
}
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}