fix: clarify upload errors and raise upload limits

src/api/client.ts

@@ -139,6 +139,70 @@ export class ApiError extends Error {
   }
 }
 
+function formatBytes(bytes: number) {
+  if (!Number.isFinite(bytes) || bytes < 0) return '0B';
+  if (bytes >= 1024 * 1024) {
+    const mb = bytes / 1024 / 1024;
+    return `${Number.isInteger(mb) ? mb : mb.toFixed(1)}MB`;
+  }
+  if (bytes >= 1024) {
+    const kb = bytes / 1024;
+    return `${Number.isInteger(kb) ? kb : kb.toFixed(1)}KB`;
+  }
+  return `${bytes}B`;
+}
+
+function readNumberDetail(details: ApiError['details'], key: string) {
+  if (!details || typeof details !== 'object') return null;
+  const value = (details as Record<string, unknown>)[key];
+  return typeof value === 'number' && Number.isFinite(value) ? value : null;
+}
+
+function isImageUploadFile(file: File) {
+  if (file.type.startsWith('image/')) return true;
+  return /\.(png|jpe?g|webp|gif)$/i.test(file.name);
+}
+
+function normalizeMindSpaceUploadError(error: unknown, file: File): Error {
+  if (!(error instanceof ApiError)) {
+    return error instanceof Error ? error : new Error('上传失败，请重试');
+  }
+
+  const imageMax = formatBytes(CHAT_IMAGE_UPLOAD_MAX_INPUT_BYTES);
+  if (error.code === 'quota_exceeded' || error.status === 429) {
+    const requiredBytes = readNumberDetail(error.details, 'requiredBytes');
+    const availableBytes = readNumberDetail(error.details, 'availableBytes');
+    const detail =
+      requiredBytes !== null && availableBytes !== null
+        ? `当前剩余 ${formatBytes(availableBytes)}，本次需要 ${formatBytes(requiredBytes)}。`
+        : '';
+    return new ApiError(
+      error.status,
+      `剩余空间不足，${detail}请减少图片数量或压缩后重试。`,
+      error.code,
+      error.details,
+    );
+  }
+
+  if (error.code === 'file_too_large' || error.status === 413) {
+    const message = isImageUploadFile(file)
+      ? `图片文件过大，单张图片不能超过 ${imageMax}，请压缩后重试。`
+      : `文件过大，请压缩到单文件上限以内后重试。`;
+    return new ApiError(error.status, message, error.code, error.details);
+  }
+
+  if (/MindSpace\s*服务异常/.test(error.message) || error.code === 'internal_error') {
+    return new ApiError(
+      error.status,
+      `上传失败，请减少图片数量或压缩图片后重试；单张图片上限 ${imageMax}。`,
+      error.code,
+      error.details,
+    );
+  }
+
+  return error;
+}
+
 function sanitizeUserFacingErrorMessage(message: string) {
   const normalized = String(message ?? '').trim();
   if (!normalized) return normalized;
@@ -722,17 +786,22 @@ export async function uploadMindSpaceAsset(
     );
   }
 
-  const created = await apiFetch<{ data: MindSpaceUpload }>('/mindspace/v1/uploads', {
-    method: 'POST',
-    body: JSON.stringify({
-      category_id: categoryId,
-      filename: file.name,
-      size_bytes: file.size,
-      declared_mime_type: file.type || null,
-      ...(options.sessionId ? { session_id: options.sessionId } : {}),
-      ...(options.messageId ? { message_id: options.messageId } : {}),
-    }),
-  });
+  let created: { data: MindSpaceUpload };
+  try {
+    created = await apiFetch<{ data: MindSpaceUpload }>('/mindspace/v1/uploads', {
+      method: 'POST',
+      body: JSON.stringify({
+        category_id: categoryId,
+        filename: file.name,
+        size_bytes: file.size,
+        declared_mime_type: file.type || null,
+        ...(options.sessionId ? { session_id: options.sessionId } : {}),
+        ...(options.messageId ? { message_id: options.messageId } : {}),
+      }),
+    });
+  } catch (error) {
+    throw normalizeMindSpaceUploadError(error, file);
+  }
 
   try {
     await uploadFileContent(created.data.uploadUrl, file, options.onProgress);
@@ -745,7 +814,7 @@ export async function uploadMindSpaceAsset(
     await apiFetch(`/mindspace/v1/uploads/${created.data.id}`, {
       method: 'DELETE',
     }).catch(() => {});
-    throw error;
+    throw normalizeMindSpaceUploadError(error, file);
   }
 }