新增聊天室发送图片功能

app/Http/Controllers/ChatController.php

@@ -31,14 +31,20 @@ use App\Services\UserCurrencyService;
 use App\Services\VipService;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
+use Illuminate\Http\UploadedFile;
 use Illuminate\Support\Facades\Auth;
 use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Redis;
 use Illuminate\Support\Facades\Storage;
+use Illuminate\Support\Str;
 use Illuminate\View\View;
 use Intervention\Image\Drivers\Gd\Driver;
 use Intervention\Image\ImageManager;
 
+/**
+ * 聊天室核心控制器
+ * 负责进房、发言、退房、公告与聊天室内各种实时交互。
+ */
 class ChatController extends Controller
 {
     /**
@@ -333,6 +339,7 @@ class ChatController extends Controller
     {
         $data = $request->validated();
         $user = Auth::user();
+        $imagePayload = null;
 
         // 0. 检查用户是否被禁言（Redis TTL 自动过期）
         $muteKey = "mute:{$id}:{$user->username}";
@@ -360,12 +367,18 @@ class ChatController extends Controller
             }
         }
 
-        // 1. 过滤净化消息体
-        $pureContent = $this->filter->filter($data['content'] ?? '');
-        if ($pureContent === '') {
+        // 1. 过滤净化消息体；若本次只发图片，则允许文本内容为空。
+        $rawContent = (string) ($data['content'] ?? '');
+        $pureContent = $rawContent !== '' ? $this->filter->filter($rawContent) : '';
+        if ($pureContent === '' && ! $request->hasFile('image')) {
             return response()->json(['status' => 'error', 'message' => '消息内容不能为空或不合法。'], 422);
         }
 
+        // 2. 若带图片，则生成原图与缩略图并按日期目录保存。
+        if ($request->hasFile('image')) {
+            $imagePayload = $this->storeChatImage($request->file('image'), $user->id);
+        }
+
         // 2. 封装消息对象
         $messageData = [
             'id' => $this->chatState->nextMessageId($id), // 分布式安全自增序号
@@ -376,8 +389,12 @@ class ChatController extends Controller
             'is_secret' => $data['is_secret'] ?? false,
             'font_color' => $data['font_color'] ?? '',
             'action' => $data['action'] ?? '',
+            'message_type' => $imagePayload ? 'image' : 'text',
             'sent_at' => now()->toDateTimeString(),
         ];
+        if ($imagePayload !== null) {
+            $messageData = array_merge($messageData, $imagePayload);
+        }
 
         // 3. 压入 Redis 缓存列表 (防炸内存，只保留最近 N 条)
         $this->chatState->pushMessage($id, $messageData);
@@ -405,6 +422,39 @@ class ChatController extends Controller
         return response()->json(['status' => 'success']);
     }
 
+    /**
+     * 保存聊天图片并生成原图、缩略图两份资源。
+     *
+     * @return array<string, string>
+     */
+    private function storeChatImage(UploadedFile $image, int $userId): array
+    {
+        $manager = new ImageManager(new Driver);
+        $extension = strtolower($image->extension() ?: 'jpg');
+        $datePath = now()->format('Y-m-d');
+        $basename = 'chat_'.$userId.'_'.Str::uuid();
+        $originalPath = "chat-images/{$datePath}/{$basename}_original.{$extension}";
+        $thumbPath = "chat-images/{$datePath}/{$basename}_thumb.{$extension}";
+
+        // 原图仅做缩边处理，避免超大文件直接灌进磁盘。
+        $originalImage = $manager->read($image);
+        $originalImage->scaleDown(width: 1600, height: 1600);
+        Storage::disk('public')->put($originalPath, (string) $originalImage->encode());
+
+        // 缩略图限制在 220px 范围内，聊天室里只展示轻量小图。
+        $thumbImage = $manager->read($image);
+        $thumbImage->scaleDown(width: 220, height: 220);
+        Storage::disk('public')->put($thumbPath, (string) $thumbImage->encode());
+
+        return [
+            'image_path' => $originalPath,
+            'image_thumb_path' => $thumbPath,
+            'image_original_name' => $image->getClientOriginalName(),
+            'image_url' => Storage::url($originalPath),
+            'image_thumb_url' => Storage::url($thumbPath),
+        ];
+    }
+
     /**
      * 自动挂机存点心跳与经验升级 (新增)
      * 替代原版定时 iframe 刷新的 save.asp。