feat: 班级小助手 阶段1-3（monorepo + 后端 REST/Socket.IO + Web 管理端）

packages/web-admin/src/stores/auth.ts

@@ -0,0 +1,89 @@
+import { computed, ref } from 'vue';
+import { defineStore } from 'pinia';
+import { STORAGE_KEYS, type LoginRequest, type LoginResponse, type StudentDto } from '@classhelper/shared';
+import { authApi } from '@/api';
+
+function readStoredUser(): StudentDto | null {
+  const raw = localStorage.getItem(STORAGE_KEYS.user);
+  if (!raw) return null;
+  try {
+    return JSON.parse(raw) as StudentDto;
+  } catch {
+    return null;
+  }
+}
+
+export const useAuthStore = defineStore('auth', () => {
+  const token = ref<string | null>(localStorage.getItem(STORAGE_KEYS.token));
+  const user = ref<StudentDto | null>(readStoredUser());
+  const loading = ref(false);
+
+  const isAuthenticated = computed(() => Boolean(token.value));
+  const role = computed(() => user.value?.role ?? null);
+  const isStaff = computed(() => role.value === 'ADMIN' || role.value === 'TEACHER');
+  const displayName = computed(() => user.value?.name ?? '未登录');
+  const roleLabel = computed(() => {
+    if (role.value === 'ADMIN') return '管理员';
+    if (role.value === 'TEACHER') return '教师';
+    return '学生';
+  });
+
+  function persist(): void {
+    if (token.value) localStorage.setItem(STORAGE_KEYS.token, token.value);
+    else localStorage.removeItem(STORAGE_KEYS.token);
+    if (user.value) localStorage.setItem(STORAGE_KEYS.user, JSON.stringify(user.value));
+    else localStorage.removeItem(STORAGE_KEYS.user);
+  }
+
+  function setSession(payload: LoginResponse): void {
+    token.value = payload.token;
+    user.value = { ...payload.user } as StudentDto;
+    persist();
+  }
+
+  async function login(payload: LoginRequest): Promise<void> {
+    loading.value = true;
+    try {
+      setSession(await authApi.login(payload));
+    } finally {
+      loading.value = false;
+    }
+  }
+
+  async function fetchProfile(): Promise<void> {
+    if (!token.value) return;
+    user.value = await authApi.me();
+    persist();
+  }
+
+  async function logout(): Promise<void> {
+    try {
+      if (token.value) await authApi.logout();
+    } catch {
+      // 退出登录失败不阻塞本地清理
+    } finally {
+      clear();
+    }
+  }
+
+  function clear(): void {
+    token.value = null;
+    user.value = null;
+    persist();
+  }
+
+  return {
+    token,
+    user,
+    loading,
+    isAuthenticated,
+    isStaff,
+    role,
+    displayName,
+    roleLabel,
+    login,
+    logout,
+    fetchProfile,
+    clear,
+  };
+});