2026-02-27 00:12:16 +08:00
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<?php
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/**
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* 文件功能:定期清理聊天记录 Artisan 命令
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*
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* 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。
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* 保留天数可通过 sysparam 表的 message_retention_days 配置,默认 30 天。
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*
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* @author ChatRoom Laravel
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*
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* @version 1.0.0
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*/
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namespace App\Console\Commands;
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use App\Models\Message;
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use App\Models\Sysparam;
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use Carbon\Carbon;
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use Illuminate\Console\Command;
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2026-04-12 14:04:18 +08:00
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use Illuminate\Support\Facades\Storage;
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2026-02-27 00:12:16 +08:00
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2026-04-12 14:04:18 +08:00
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/**
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* 定期清理聊天记录命令
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* 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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*/
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2026-02-27 00:12:16 +08:00
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class PurgeOldMessages extends Command
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{
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/**
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* 命令签名
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*
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* @var string
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*/
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protected $signature = 'messages:purge
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{--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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2026-02-27 00:12:16 +08:00
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{--dry-run : 仅预览不实际删除}';
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/**
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* 命令描述
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*
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* @var string
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*/
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2026-04-12 14:04:18 +08:00
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protected $description = '清理过期聊天记录,并额外清理 3 天前的聊天图片文件';
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2026-02-27 00:12:16 +08:00
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/**
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* 执行命令
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*
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* 按批次删除旧消息,避免长时间锁表。
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*/
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public function handle(): int
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{
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// 保留天数:命令行参数 > sysparam 配置 > 默认 30 天
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$days = (int) ($this->option('days')
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?: Sysparam::getValue('message_retention_days', '30'));
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2026-04-12 14:04:18 +08:00
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$imageDays = max(0, (int) $this->option('image-days'));
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2026-02-27 00:12:16 +08:00
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$cutoff = Carbon::now()->subDays($days);
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$isDryRun = $this->option('dry-run');
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2026-04-12 14:04:18 +08:00
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$this->cleanupExpiredImages($imageDays, $isDryRun);
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2026-02-27 00:12:16 +08:00
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// 统计待清理数量
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$totalCount = Message::where('sent_at', '<', $cutoff)->count();
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if ($totalCount === 0) {
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$this->info("✅ 没有超过 {$days} 天的聊天记录需要清理。");
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return self::SUCCESS;
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}
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if ($isDryRun) {
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$this->warn("🔍 [预览模式] 将删除 {$totalCount} 条超过 {$days} 天的聊天记录(截止 {$cutoff->toDateTimeString()})");
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return self::SUCCESS;
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}
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$this->info("🧹 开始清理超过 {$days} 天的聊天记录(截止 {$cutoff->toDateTimeString()})...");
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$this->info(" 待清理数量:{$totalCount} 条");
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// 分批删除,每批 1000 条,避免长时间锁表
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$deleted = 0;
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$batchSize = 1000;
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do {
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$batch = Message::where('sent_at', '<', $cutoff)
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->limit($batchSize)
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->delete();
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$deleted += $batch;
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if ($batch > 0) {
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$this->line(" 已删除 {$deleted}/{$totalCount} 条...");
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}
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} while ($batch === $batchSize);
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$this->info("✅ 清理完成!共删除 {$deleted} 条聊天记录。");
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return self::SUCCESS;
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}
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2026-04-12 14:04:18 +08:00
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/**
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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。
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*/
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private function cleanupExpiredImages(int $imageDays, bool $isDryRun): void
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{
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$imageCutoff = Carbon::now()->subDays($imageDays);
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$query = Message::query()
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->where('message_type', 'image')
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->where('sent_at', '<', $imageCutoff)
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->where(function ($builder) {
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$builder->whereNotNull('image_path')->orWhereNotNull('image_thumb_path');
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});
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$totalCount = (clone $query)->count();
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if ($totalCount === 0) {
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$this->line("🖼️ 没有超过 {$imageDays} 天的聊天图片需要清理。");
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return;
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}
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if ($isDryRun) {
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$this->warn("🔍 [预览模式] 将清理 {$totalCount} 条超过 {$imageDays} 天的聊天图片(截止 {$imageCutoff->toDateTimeString()})");
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return;
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}
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$processed = 0;
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$query->orderBy('id')->chunkById(200, function ($messages) use (&$processed) {
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foreach ($messages as $message) {
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$paths = array_values(array_filter([
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$message->image_path,
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$message->image_thumb_path,
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]));
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// 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。
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if ($paths !== []) {
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Storage::disk('public')->delete($paths);
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}
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$placeholder = trim((string) $message->content);
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$placeholder = $placeholder !== '' ? $placeholder.' [图片已过期]' : '[图片已过期]';
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$message->forceFill([
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'content' => $placeholder,
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'message_type' => 'expired_image',
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'image_path' => null,
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'image_thumb_path' => null,
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'image_original_name' => null,
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])->save();
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$processed++;
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}
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});
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$this->info("🖼️ 已清理 {$processed} 条超过 {$imageDays} 天的聊天图片。");
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}
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2026-02-27 00:12:16 +08:00
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}
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