feat: migrate runtime backend to node server

src/services/authService.ts

@@ -0,0 +1,101 @@
+import {
+  clearStoredAccessToken,
+  clearStoredAutoAuthCredentials,
+  getStoredAutoAuthCredentials,
+  requestJson,
+  setStoredAccessToken,
+  setStoredAutoAuthCredentials,
+} from './apiClient';
+
+export type AuthUser = {
+  id: string;
+  username: string;
+};
+
+export type AutoAuthCredentials = {
+  username: string;
+  password: string;
+};
+
+function buildRandomSegment(length: number) {
+  const alphabet = 'abcdefghijklmnopqrstuvwxyz0123456789';
+  const bytes = crypto.getRandomValues(new Uint8Array(length));
+
+  return Array.from(bytes, (value) => alphabet[value % alphabet.length]).join('');
+}
+
+export function createAutoAuthCredentials(): AutoAuthCredentials {
+  return {
+    username: `guest_${buildRandomSegment(12)}`,
+    password: `auto_${buildRandomSegment(24)}_${buildRandomSegment(8)}`,
+  };
+}
+
+export async function authEntry(username: string, password: string) {
+  const response = await requestJson<{
+    token: string;
+    user: AuthUser;
+  }>(
+    '/api/auth/entry',
+    {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        username,
+        password,
+      }),
+    },
+    '登录失败',
+  );
+
+  setStoredAccessToken(response.token);
+  return response.user;
+}
+
+export async function authEntryWithStoredCredentials(
+  credentials: AutoAuthCredentials,
+) {
+  const user = await authEntry(credentials.username, credentials.password);
+  setStoredAutoAuthCredentials(credentials);
+  return user;
+}
+
+export async function ensureAutoAuthUser() {
+  const credentials =
+    getStoredAutoAuthCredentials() ?? createAutoAuthCredentials();
+  const user = await authEntryWithStoredCredentials(credentials);
+
+  return {
+    user,
+    credentials,
+  };
+}
+
+export async function getCurrentAuthUser() {
+  const response = await requestJson<{
+    user: AuthUser | null;
+  }>(
+    '/api/auth/me',
+    {
+      method: 'GET',
+    },
+    '读取当前用户失败',
+  );
+
+  return response.user;
+}
+
+export async function logoutAuthUser() {
+  try {
+    await requestJson<{ ok: true }>(
+      '/api/auth/logout',
+      {
+        method: 'POST',
+      },
+      '退出登录失败',
+    );
+  } finally {
+    clearStoredAccessToken();
+    clearStoredAutoAuthCredentials();
+  }
+}