feat: 大量优化和bug修复

server/api/admin/system-config.get.ts

@@ -0,0 +1,33 @@
+// server/api/admin/system-config.get.ts - 读取系统配置（仅 superadmin 可访问）
+//
+// 流程：鉴权 → 二次校验 superadmin → 读 system_config 表 → 遮蔽 key → 返回
+// 安全边界：
+// - handler 内独立校验 role === 'superadmin'，不依赖 middleware
+// - API Key 只返回遮蔽预览（前4...后4），不返回明文
+// - 此接口不返回任何用户数据
+
+import { setResponseStatus } from "h3";
+import { getSysConfig, maskApiKey } from "~~/server/utils/sysConfig";
+import { apiErr, apiOk } from "~~/server/utils/response";
+import type { ISystemConfigResponse } from "~~/shared/types/settings";
+
+export default defineEventHandler(async (event): Promise<ISystemConfigResponse> => {
+  // 二次校验：必须是 superadmin 才能访问系统配置
+  const role = (event.context.auth?.user as { role?: string } | undefined)
+    ?.role;
+  if (role !== "superadmin") {
+    setResponseStatus(event, 403);
+    return apiErr(403, "权限不足") as ISystemConfigResponse;
+  }
+
+  const cfg = await getSysConfig();
+
+  return apiOk({
+    openAiApiBase: cfg.openAiApiBase,
+    openAiApiKeyPreview: maskApiKey(cfg.openAiApiKey),
+    openAiModel: cfg.openAiModel,
+    maxTokens: cfg.maxTokens,
+    temperature: cfg.temperature,
+    maxSseLineBytes: cfg.maxSseLineBytes
+  });
+});

server/api/admin/system-config.put.ts

@@ -0,0 +1,122 @@
+// server/api/admin/system-config.put.ts - 更新系统配置（仅 superadmin 可访问）
+//
+// 流程：鉴权 → 二次校验 superadmin → 白名单校验 → upsert system_config → 失效缓存 → 返回
+// 安全边界：
+// - handler 内独立校验 role === 'superadmin'
+// - openAiApiKey 为空字符串时跳过，不清空已有 key
+// - 更新成功后立即失效系统配置缓存，下次请求即生效
+
+import { readBody, setResponseStatus } from "h3";
+import { prisma } from "~~/server/utils/db";
+import { createApiLogger, toSafeLogError } from "~~/server/utils/logging";
+import { apiErr, apiOk } from "~~/server/utils/response";
+import {
+  invalidateSysConfigCache
+} from "~~/server/utils/sysConfig";
+import type { ISystemConfigUpdateRequest } from "~~/shared/types/settings";
+
+const isRecord = (v: unknown): v is Record<string, unknown> =>
+  typeof v === "object" && v !== null && !Array.isArray(v);
+
+/** system_config 表 key 的常量映射 */
+const SYS_KEY = {
+  openAiApiKey: "openai_api_key",
+  openAiApiBase: "openai_api_base",
+  openAiModel: "openai_model",
+  maxTokens: "max_tokens",
+  temperature: "temperature",
+  maxSseLineBytes: "openai_stream_max_sse_line_bytes"
+} as const;
+
+export default defineEventHandler(async (event) => {
+  const logger = createApiLogger(event, "admin.system-config.put");
+
+  const role = (event.context.auth?.user as { role?: string } | undefined)
+    ?.role;
+  if (role !== "superadmin") {
+    setResponseStatus(event, 403);
+    return apiErr(403, "权限不足");
+  }
+
+  const body = await readBody<unknown>(event).catch(() => null);
+  if (!isRecord(body)) {
+    setResponseStatus(event, 400);
+    return apiErr(400, "请求体必须是 JSON 对象");
+  }
+
+  const req: ISystemConfigUpdateRequest = {};
+  if (typeof body.openAiApiBase === "string") {
+    req.openAiApiBase = body.openAiApiBase.trim();
+  }
+  if (typeof body.openAiApiKey === "string") {
+    req.openAiApiKey = body.openAiApiKey; // 空字符串 = 跳过，见下方逻辑
+  }
+  if (typeof body.openAiModel === "string") {
+    req.openAiModel = body.openAiModel.trim();
+  }
+  if (typeof body.maxTokens === "number") {
+    req.maxTokens = body.maxTokens;
+  }
+  if (typeof body.temperature === "number") {
+    req.temperature = body.temperature;
+  }
+  if (typeof body.maxSseLineBytes === "number") {
+    req.maxSseLineBytes = body.maxSseLineBytes;
+  }
+
+  // 构建需要写入的 KV 对（key 为空时跳过）
+  type SysKv = { key: string; value: string };
+  const upserts: SysKv[] = [];
+
+  if (req.openAiApiBase) {
+    upserts.push({ key: SYS_KEY.openAiApiBase, value: req.openAiApiBase });
+  }
+  // key 为空字符串时跳过，不清空已有 key
+  if (req.openAiApiKey) {
+    upserts.push({ key: SYS_KEY.openAiApiKey, value: req.openAiApiKey });
+  }
+  if (req.openAiModel) {
+    upserts.push({ key: SYS_KEY.openAiModel, value: req.openAiModel });
+  }
+  if (req.maxTokens !== undefined) {
+    upserts.push({ key: SYS_KEY.maxTokens, value: String(req.maxTokens) });
+  }
+  if (req.temperature !== undefined) {
+    upserts.push({ key: SYS_KEY.temperature, value: String(req.temperature) });
+  }
+  if (req.maxSseLineBytes !== undefined) {
+    upserts.push({
+      key: SYS_KEY.maxSseLineBytes,
+      value: String(req.maxSseLineBytes)
+    });
+  }
+
+  if (upserts.length === 0) {
+    return apiOk(null);
+  }
+
+  try {
+    await prisma.$transaction(
+      upserts.map((item) =>
+        prisma.systemConfig.upsert({
+          where: { key: item.key },
+          create: { key: item.key, value: item.value },
+          update: { value: item.value }
+        })
+      )
+    );
+
+    // 立即失效缓存，确保下次请求读到最新配置
+    invalidateSysConfigCache();
+
+    logger.info("system_config_updated", {
+      updatedKeys: upserts.map((u) => u.key)
+    });
+
+    return apiOk(null);
+  } catch (error) {
+    logger.error("system_config_update_failed", { error: toSafeLogError(error) });
+    setResponseStatus(event, 500);
+    return apiErr(500, "服务器内部错误");
+  }
+});

server/api/health.get.ts

@@ -1,20 +1,4 @@
-// server/api/health.get.ts - 服务健康检查接口
-import { apiOk } from "~~/server/utils/response";
-import { SERVICE_VERSION } from "~~/server/utils/runtimeState";
-import { getSysConfig } from "~~/server/utils/sysConfig";
-
-/**
- * 健康检查不需要鉴权
- *
- * 这个接口用于部署平台、Docker healthcheck 或人工确认服务是否启动；
- * 返回模型名，但不返回 API Key、baseURL 或其他敏感配置
- */
-export default defineEventHandler(async () => {
-  const cfg = await getSysConfig();
-  return apiOk({
-    status: "ok" as const,
-    message: "AI题库服务运行正常",
-    version: SERVICE_VERSION,
-    model: cfg.openAiModel
-  });
+// server/api/health.get.ts - 服务健康检查接口，无需鉴权
+export default defineEventHandler(() => {
+  return { status: "ok" };
 });

server/api/search.ts

@@ -22,6 +22,7 @@ import { prisma } from "~~/server/utils/db";
 import { createApiLogger, toSafeLogError } from "~~/server/utils/logging";
 import { askAnswerStream } from "~~/server/utils/openai";
 import { addQaRecord, lookupCachedAnswer } from "~~/server/utils/runtimeState";
+import { getUserEffectiveApiConfig } from "~~/server/utils/sysConfig";
 
 /**
  * 把 query/body/form 中的值统一转成字符串
@@ -166,6 +167,10 @@ export default defineEventHandler(async (event) => {
       return createOcsErrorResponse("请先登录或提供有效 token");
     }
 
+    // 读取用户生效配置：如果用户开启了自定义 API 且完整填写，则使用自定义 base+key
+    // 否则完全回退到系统配置，保证系统 key 不流向用户自定义的 endpoint
+    const effectiveCfg = await getUserEffectiveApiConfig(userId);
+
     logger.info("read_question", {
       questionLength: params.title.length,
       type: params.type,
@@ -196,7 +201,8 @@ export default defineEventHandler(async (event) => {
     );
     const streamResult = await askAnswerStream({
       prompt,
-      systemPrompt: ANSWER_SYSTEM_PROMPT
+      systemPrompt: ANSWER_SYSTEM_PROMPT,
+      cfg: effectiveCfg
     });
     const processedAnswer = extractAnswer(streamResult.answer, params.type);
 

server/api/stats.get.ts

@@ -1,32 +0,0 @@
-// server/api/stats.get.ts - 服务运行统计接口
-import { setResponseStatus } from "h3";
-
-import { prisma } from "~~/server/utils/db";
-import { createApiLogger } from "~~/server/utils/logging";
-import { apiErr, apiOk } from "~~/server/utils/response";
-import { getRuntimeStats } from "~~/server/utils/runtimeState";
-
-/**
- * 运行统计接口
- *
- * 返回进程 uptime、模型名以及当前用户的问答记录总数
- * 必须携带有效 session cookie（由 api-auth middleware 统一鉴权）
- */
-export default defineEventHandler(async (event) => {
-  const logger = createApiLogger(event, "api.stats");
-  const userId = event.context.auth!.user.id;
-
-  try {
-    const [runtimeStats, qa_records_count] = await Promise.all([
-      getRuntimeStats(),
-      prisma.qaRecord.count({ where: { userId } })
-    ]);
-
-    logger.info("finish_success");
-    return apiOk({ ...runtimeStats, qa_records_count });
-  } catch (err) {
-    logger.error("db_error", { userId, err: String(err) });
-    setResponseStatus(event, 500);
-    return apiErr(500, "服务器内部错误");
-  }
-});

server/api/user/settings.get.ts

@@ -0,0 +1,30 @@
+// server/api/user/settings.get.ts - 读取当前用户的自定义 API 配置
+//
+// 流程：鉴权 → 读 user_config 单行 JSON 配置 → 遮蔽 key → 返回
+// 安全边界：key 只返回遮蔽预览（前4...后4），不返回明文；不涉及系统配置
+
+import { prisma } from "~~/server/utils/db";
+import { apiOk } from "~~/server/utils/response";
+import { maskApiKey } from "~~/server/utils/sysConfig";
+import { normalizeUserConfigValue } from "~~/server/utils/userConfig";
+import type { IUserSettingsResponse } from "~~/shared/types/settings";
+
+export default defineEventHandler(async (event): Promise<IUserSettingsResponse> => {
+  // middleware 已确保此处 auth 不为空
+  const userId = event.context.auth!.user.id;
+
+  const row = await prisma.userConfig.findUnique({
+    where: { userId },
+    select: { value: true }
+  });
+  const userConfig = normalizeUserConfigValue(row?.value);
+
+  return apiOk({
+    useCustomConfig: userConfig.useCustomConfig,
+    customApiBase: userConfig.customApiBase,
+    customApiKeyPreview: maskApiKey(userConfig.customApiKey ?? ""),
+    customModel: userConfig.customModel,
+    customMaxTokens: userConfig.customMaxTokens,
+    customTemperature: userConfig.customTemperature
+  });
+});

server/api/user/settings.post.ts

@@ -0,0 +1,2 @@
+// server/api/user/settings.post.ts - 兼容 POST 保存个人配置，复用 PUT 实现
+export { default } from "./settings.put";

server/api/user/settings.put.ts

@@ -0,0 +1,138 @@
+// server/api/user/settings.put.ts - 更新当前用户的自定义 API 配置
+//
+// 流程：鉴权 → 白名单校验 → 合并并写入 user_config 单行 JSON value → 返回
+// 安全边界：
+// - customApiKey 为空字符串时跳过，不清空已有 key
+// - 只接受声明字段，拒绝未知字段
+// - 不读取或返回系统配置任何内容
+// 注意：保存时使用单条 SQL upsert，避免多次写入造成连接占用
+
+import { randomUUID } from "node:crypto";
+
+import { readBody, setResponseStatus } from "h3";
+
+import { Prisma } from "~~/prisma/generated/client";
+import { prisma } from "~~/server/utils/db";
+import { createApiLogger, toSafeLogError } from "~~/server/utils/logging";
+import { apiErr, apiOk } from "~~/server/utils/response";
+import {
+  hasUserConfigMutation,
+  mergeUserConfigUpdate,
+  normalizeUserConfigValue,
+  toUserConfigJson
+} from "~~/server/utils/userConfig";
+import type { IUserSettingsUpdateRequest } from "~~/shared/types/settings";
+
+/** 是否是纯 JSON 对象 */
+const isRecord = (v: unknown): v is Record<string, unknown> =>
+  typeof v === "object" && v !== null && !Array.isArray(v);
+
+const ALLOWED_KEYS = new Set([
+  "useCustomConfig",
+  "customApiBase",
+  "customApiKey",
+  "customModel",
+  "customMaxTokens",
+  "customTemperature"
+]);
+
+/** 写入用户配置单行 JSON value */
+const writeUserConfigValue = async (
+  userId: string,
+  value: Prisma.InputJsonObject
+) => {
+  const updatedAt = new Date();
+  const jsonValue = JSON.stringify(value);
+
+  await prisma.$executeRaw(Prisma.sql`
+    INSERT INTO user_config (id, userId, value, updatedAt)
+    VALUES (${randomUUID()}, ${userId}, ${jsonValue}, ${updatedAt})
+    ON DUPLICATE KEY UPDATE value = VALUES(value), updatedAt = VALUES(updatedAt)
+  `);
+};
+
+export default defineEventHandler(async (event) => {
+  const logger = createApiLogger(event, "user.settings.put");
+  const userId = event.context.auth!.user.id;
+
+  const body = await readBody<unknown>(event).catch(() => null);
+  if (!isRecord(body)) {
+    setResponseStatus(event, 400);
+    return apiErr(400, "请求体必须是 JSON 对象");
+  }
+  const unknownKeys = Object.keys(body).filter((key) => !ALLOWED_KEYS.has(key));
+  if (unknownKeys.length > 0) {
+    setResponseStatus(event, 400);
+    return apiErr(400, "请求体包含不支持的字段");
+  }
+
+  // 白名单字段提取
+  const req: IUserSettingsUpdateRequest = {};
+  if (typeof body.useCustomConfig === "boolean") {
+    req.useCustomConfig = body.useCustomConfig;
+  }
+  if (typeof body.customApiBase === "string") {
+    req.customApiBase = body.customApiBase.trim();
+  }
+  if (typeof body.customApiKey === "string") {
+    req.customApiKey = body.customApiKey; // 空字符串 = 不更新，见下方逻辑
+  }
+  if (typeof body.customModel === "string") {
+    req.customModel = body.customModel.trim();
+  }
+  if (
+    typeof body.customMaxTokens === "number" &&
+    Number.isFinite(body.customMaxTokens)
+  ) {
+    req.customMaxTokens = body.customMaxTokens;
+  } else if (body.customMaxTokens === null) {
+    req.customMaxTokens = null;
+  }
+  if (
+    typeof body.customTemperature === "number" &&
+    Number.isFinite(body.customTemperature)
+  ) {
+    req.customTemperature = body.customTemperature;
+  } else if (body.customTemperature === null) {
+    req.customTemperature = null;
+  }
+
+  // 没有任何变更时直接返回
+  if (!hasUserConfigMutation(req)) {
+    return apiOk(null);
+  }
+
+  try {
+    const currentRow = await prisma.userConfig.findUnique({
+      where: { userId },
+      select: { value: true }
+    });
+    const current = normalizeUserConfigValue(currentRow?.value);
+    const next = mergeUserConfigUpdate(current, req);
+    const jsonValue = toUserConfigJson(next);
+
+    logger.info("user_settings_write_start", {
+      hasExistingRow: Boolean(currentRow),
+      useCustomConfig: next.useCustomConfig
+    });
+
+    await writeUserConfigValue(userId, jsonValue);
+
+    logger.info("user_settings_updated", {
+      useCustomConfig: next.useCustomConfig,
+      hasCustomApiBase: Boolean(next.customApiBase),
+      hasCustomApiKey: Boolean(next.customApiKey),
+      hasCustomModel: Boolean(next.customModel),
+      hasCustomMaxTokens: next.customMaxTokens !== null,
+      hasCustomTemperature: next.customTemperature !== null
+    });
+
+    return apiOk(null);
+  } catch (error) {
+    logger.error("user_settings_update_failed", {
+      error: toSafeLogError(error)
+    });
+    setResponseStatus(event, 500);
+    return apiErr(500, "服务器内部错误");
+  }
+});