fix: 服务端验证强化 — 房间ID/坐标/swipe/盲盒竞态/空格

- #15: 房间 ID 扩展为 6 位字母数字，createRoom 用 P2002 重试替代 find-then-create
- #16: 盲盒编辑/删除改用 updateMany/deleteMany 原子操作，防止 TOCTOU
- #17: lat/lng 用 Number.isFinite + 范围校验 (-90~90, -180~180)
- #18: swipe action 必须为 'like' 或 'pass'
- #19: user PUT 的 JSON.parse(preferences) 加 try/catch
- #26: requireString 拒绝纯空格字符串

src/app/api/blindbox/route.ts

@@ -55,17 +55,14 @@ export const PUT = apiHandler(async (req) => {
   requireString(ideaId, "ideaId");
   const trimmedContent = validateIdeaContent(content);
 
-  const idea = await prisma.blindBoxIdea.findUnique({ where: { id: ideaId } });
-  if (!idea) throw new ApiError("想法不存在", 404);
-  if (idea.userId !== userId) throw new ApiError("只能编辑自己的想法", 403);
-  if (idea.status !== "in_pool") throw new ApiError("已抽中的想法不能编辑");
-
-  const updated = await prisma.blindBoxIdea.update({
-    where: { id: ideaId },
+  const { count } = await prisma.blindBoxIdea.updateMany({
+    where: { id: ideaId, userId, status: "in_pool" },
     data: { content: trimmedContent },
   });
 
-  return NextResponse.json({ id: updated.id, content: updated.content });
+  if (count === 0) throw new ApiError("想法不存在、已被抽中或无权编辑", 404);
+
+  return NextResponse.json({ id: ideaId, content: trimmedContent });
 });
 
 export const DELETE = apiHandler(async (req) => {
@@ -74,12 +71,11 @@ export const DELETE = apiHandler(async (req) => {
   requireUserId(userId);
   requireString(ideaId, "ideaId");
 
-  const idea = await prisma.blindBoxIdea.findUnique({ where: { id: ideaId } });
-  if (!idea) throw new ApiError("想法不存在", 404);
-  if (idea.userId !== userId) throw new ApiError("只能删除自己的想法", 403);
-  if (idea.status !== "in_pool") throw new ApiError("已抽中的想法不能删除");
+  const { count } = await prisma.blindBoxIdea.deleteMany({
+    where: { id: ideaId, userId, status: "in_pool" },
+  });
 
-  await prisma.blindBoxIdea.delete({ where: { id: ideaId } });
+  if (count === 0) throw new ApiError("想法不存在、已被抽中或无权删除", 404);
 
   return NextResponse.json({ deleted: true });
 });

src/app/api/room/[id]/swipe/route.ts

@@ -11,6 +11,9 @@ export const POST = apiHandler(async (req, { params }) => {
   if (restaurantId == null || !action) {
     throw new ApiError("restaurantId and action are required");
   }
+  if (action !== "like" && action !== "pass") {
+    throw new ApiError("action must be 'like' or 'pass'");
+  }
 
   const rid = String(restaurantId);
 

src/app/api/room/create/route.ts

@@ -117,7 +117,10 @@ export const POST = apiHandler(async (req) => {
 
   const sceneConfig = getSceneConfig(scene === "drink" ? "drink" : "eat");
 
-  if (!lat || !lng) {
+  const numLat = Number(lat);
+  const numLng = Number(lng);
+  if (!Number.isFinite(numLat) || !Number.isFinite(numLng) ||
+      numLat < -90 || numLat > 90 || numLng < -180 || numLng > 180) {
     throw new ApiError("无法获取位置信息，请允许定位权限后重试");
   }
 
@@ -125,7 +128,7 @@ export const POST = apiHandler(async (req) => {
 
   const url = new URL("https://restapi.amap.com/v5/place/around");
   url.searchParams.set("key", apiKey);
-  url.searchParams.set("location", `${lng},${lat}`);
+  url.searchParams.set("location", `${numLng},${numLat}`);
   url.searchParams.set("radius", String(radius));
   url.searchParams.set("types", sceneConfig.poiTypes);
   url.searchParams.set("show_fields", "business,photos");

src/app/api/user/route.ts

@@ -73,12 +73,15 @@ export const PUT = apiHandler(async (req) => {
       data: updateData,
     });
 
+    let prefs = {};
+    try { prefs = JSON.parse(user.preferences); } catch { /* fallback */ }
+
     return NextResponse.json({
       id: user.id,
       username: user.username,
       avatar: user.avatar,
       email: user.email,
-      preferences: JSON.parse(user.preferences),
+      preferences: prefs,
     });
   } catch (e) {
     if (e instanceof Prisma.PrismaClientKnownRequestError && e.code === "P2002") {