fix: classify chat send failures
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4d83a2d001
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@ -1200,6 +1200,107 @@ function getChatStreamErrorMessage(error: unknown): string {
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return "当前对话暂时失败，请重试或切换其他模型。";
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}
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function resolveChatApiFailure(error: unknown) {
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const detailMessage = getRequestErrorMessage(error);
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const normalized = String(detailMessage || "").toLowerCase();
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if (
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normalized.includes("payload too large") ||
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normalized.includes("request entity too large") ||
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normalized.includes("body exceeded") ||
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normalized.includes("content length") ||
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normalized.includes("413")
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) {
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return {
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code: "payload_too_large:chat",
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message: "本次请求内容过大，请减少图片或文字内容后重试。",
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status: 413,
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category: "payload_too_large",
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detailMessage,
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};
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}
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if (
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error instanceof OperationTimeoutError ||
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normalized.includes("timeout") ||
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normalized.includes("timed out") ||
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normalized.includes("body timeout") ||
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normalized.includes("aborterror") ||
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normalized.includes("aborted")
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) {
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return {
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code: "timeout:chat",
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message: "当前模型响应超时，请重试，或切换到其他可用模型。",
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status: 504,
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category: "timeout",
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detailMessage,
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};
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}
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if (
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normalized.includes("fetch failed") ||
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normalized.includes("econnreset") ||
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normalized.includes("econnrefused") ||
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normalized.includes("enotfound") ||
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normalized.includes("etimedout") ||
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normalized.includes("und_err") ||
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normalized.includes("socket hang up")
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) {
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return {
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code: "server_error:chat",
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message: "模型服务连接失败，请稍后重试，或切换其他可用模型。",
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status: 502,
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category: "upstream_connection",
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detailMessage,
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};
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}
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if (
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normalized.includes("database") ||
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normalized.includes("postgres") ||
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normalized.includes("drizzle")
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) {
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return {
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code: "server_error:chat",
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message: "服务数据库暂时繁忙，请稍后重试。",
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status: 503,
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category: "database",
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detailMessage,
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};
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}
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return {
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code: "server_error:chat",
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message: "服务临时繁忙，请稍后重试；如果连续出现，请联系管理员。",
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status: 500,
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category: "unknown",
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detailMessage,
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};
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}
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function createChatApiFailureResponse(error: unknown, vercelId: string | null) {
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const failure = resolveChatApiFailure(error);
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const traceId = generateUUID();
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console.error("[Chat API] Unhandled request failure:", {
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traceId,
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vercelId,
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category: failure.category,
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status: failure.status,
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detailMessage: failure.detailMessage,
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error,
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});
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return NextResponse.json(
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{
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code: failure.code,
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message: failure.message,
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cause: `trace:${traceId}`,
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},
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{ status: failure.status }
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);
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}
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function normalizeAssistantPartsForPersistence(parts: Array<Record<string, any>> | undefined) {
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const safeParts = Array.isArray(parts) ? parts.filter(Boolean) : [];
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return safeParts.filter((part) => {
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@ -9903,6 +10004,76 @@ export async function POST(request: Request) {
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// 获取启用的工具列表
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const enabledTools = await getEnabledTools();
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if (String(finalModelId || "").trim() === "auto") {
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const hasImageInputForAutoFallback =
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message.parts.some((part: any) =>
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part?.type === "file" || part?.type === "image" || part?.type === "image_url"
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) || smartAutoHistoryImages.length > 0;
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const autoFallbackIntent =
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smartAutoExecution?.shouldApplyVideoPipeline || composerMode === "video"
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? "video_gen"
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: smartAutoExecution?.shouldApplyImagePipeline ||
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composerMode === "image" ||
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composerMode === "detail"
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? hasImageInputForAutoFallback
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? "image_edit"
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: "image_gen"
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: hasImageInputForAutoFallback
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? "vision"
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: "chat";
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try {
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const { routeToModel } = await import("@/lib/ai/model-router");
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const fallbackRoute = await routeToModel({
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intent: autoFallbackIntent,
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hasImage: hasImageInputForAutoFallback,
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});
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finalModelId = fallbackRoute.id;
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console.warn("[Chat API] Auto model was unresolved, routed to fallback model:", {
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intent: autoFallbackIntent,
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modelId: fallbackRoute.id,
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displayName: fallbackRoute.displayName,
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reason: fallbackRoute.reason,
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});
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} catch (autoModelRouteError) {
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console.error("[Chat API] Failed to route unresolved auto model:", autoModelRouteError);
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const enabledModels = await getEnabledAiModelsWithProvider(false);
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const nonAgentModels = enabledModels.filter(({ model }) => !isAiModelAgentAuto(model));
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const candidates = nonAgentModels.length > 0 ? nonAgentModels : enabledModels;
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const fallbackModel =
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candidates.find(({ model, provider }) => {
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if (!model.isEnabled || model.isSubModel) return false;
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const providerType = String(provider?.type || "");
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if (autoFallbackIntent === "video_gen") {
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return isVideoProviderType(providerType, model);
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}
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if (autoFallbackIntent === "image_edit" || autoFallbackIntent === "image_gen") {
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return isImageGenerationModelType(providerType, model);
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}
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return !isVideoProviderType(providerType, model) && !model.supportsImageGen;
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}) ||
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candidates.find(
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({ model, provider }) =>
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model.isEnabled &&
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!model.isSubModel &&
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!isVideoProviderType(String(provider?.type || ""), model)
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) ||
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candidates.find(({ model }) => model.isEnabled && !model.isSubModel);
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if (!fallbackModel) {
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return new ChatSDKError("bad_request:api", "No available models for auto mode").toResponse();
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}
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finalModelId = fallbackModel.model.id;
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console.warn("[Chat API] Auto model fallback used first available model:", {
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intent: autoFallbackIntent,
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modelId: fallbackModel.model.id,
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displayName: fallbackModel.model.displayName,
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providerType: fallbackModel.provider?.type,
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});
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}
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}
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// 检查是否是 UUID 格式（数据库中的模型 ID）
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const isUUID =
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/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i.test(
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@ -13542,8 +13713,7 @@ export async function POST(request: Request) {
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return new ChatSDKError("bad_request:activate_gateway").toResponse();
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}
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console.error("Unhandled error in chat API:", error, { vercelId });
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return new ChatSDKError("offline:chat").toResponse();
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return createChatApiFailureResponse(error, vercelId);
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} finally {
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if (requestDedupKey && acquiredInFlightLock) {
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inFlightChatRequests.delete(requestDedupKey);
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@ -4,7 +4,10 @@ export type ErrorType =
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| "forbidden"
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| "not_found"
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| "rate_limit"
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| "offline";
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| "offline"
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| "payload_too_large"
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| "server_error"
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| "timeout";
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export type Surface =
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| "chat"
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@ -105,7 +108,13 @@ export function getMessageByErrorCode(errorCode: ErrorCode): string {
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case "unauthorized:chat":
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return "You need to sign in to view this chat. Please sign in and try again.";
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case "offline:chat":
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return "We're having trouble sending your message. Please check your internet connection and try again.";
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return "网络连接已断开，请检查网络后重试。";
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case "payload_too_large:chat":
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return "本次请求内容过大，请减少图片或文字内容后重试。";
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case "server_error:chat":
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return "服务临时繁忙，请稍后重试；如果连续出现，请联系管理员。";
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case "timeout:chat":
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return "当前模型响应超时，请重试，或切换到其他可用模型。";
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case "not_found:document":
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return "The requested document was not found. Please check the document ID and try again.";
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@ -145,6 +154,12 @@ function getStatusCodeByType(type: ErrorType) {
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return 429;
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case "offline":
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return 503;
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case "payload_too_large":
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return 413;
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case "server_error":
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return 500;
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case "timeout":
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return 504;
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default:
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return 500;
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}
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@ -9,6 +9,14 @@ const RATE_LIMIT_PATTERNS = [
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/达到速率限制/,
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/限流/,
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];
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const NETWORK_TRANSPORT_PATTERNS = [
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/\bfailed to fetch\b/i,
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/\bnetworkerror\b/i,
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/\bload failed\b/i,
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/network request failed/i,
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/having trouble sending your message/i,
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/check your internet connection/i,
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];
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const JSON_EMBEDDED_MESSAGE_PATTERN = /^[["{]/;
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function isRecord(value: unknown): value is Record<string, unknown> {
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@ -186,5 +194,9 @@ export function getUserFacingRequestErrorMessage(
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return getFriendlyRateLimitMessage(options?.rateLimitMessage);
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}
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if (NETWORK_TRANSPORT_PATTERNS.some((pattern) => pattern.test(message))) {
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return "请求发送失败，请检查网络或稍后重试。";
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}
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return message;
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}
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