feat: implement frontend auth store and API

imagecreator/frontend/src/api/auth.ts

@@ -0,0 +1,28 @@
+// src/api/auth.ts
+import api from './index'
+
+export interface LoginRequest {
+  username: string
+  password: string
+}
+
+export interface RegisterRequest {
+  username: string
+  email: string
+  password: string
+}
+
+export interface AuthResponse {
+  access_token: string
+  refresh_token: string
+  token_type: string
+}
+
+export const authApi = {
+  login(data: LoginRequest) {
+    return api.post<AuthResponse>('/auth/login', data)
+  },
+  register(data: RegisterRequest) {
+    return api.post<any>('/auth/register', data)
+  },
+}

imagecreator/frontend/src/stores/auth.ts

@@ -0,0 +1,40 @@
+// src/stores/auth.ts
+import { defineStore } from 'pinia'
+import { ref } from 'vue'
+import { authApi } from '../api/auth'
+import api from '../api/index'
+
+export const useAuthStore = defineStore('auth', () => {
+  const token = ref<string | null>(localStorage.getItem('access_token'))
+  const user = ref<{ id: string; username: string; email: string } | null>(null)
+
+  const login = async (username: string, password: string) => {
+    const response = await authApi.login({ username, password })
+    token.value = response.data.access_token
+    localStorage.setItem('access_token', response.data.access_token)
+    await fetchCurrentUser()
+  }
+
+  const fetchCurrentUser = async () => {
+    if (!token.value) return
+    try {
+      const response = await api.get('/users/me')
+      user.value = response.data
+    } catch {
+      // Token might be expired
+      logout()
+    }
+  }
+
+  const register = async (username: string, email: string, password: string) => {
+    await authApi.register({ username, email, password })
+  }
+
+  const logout = () => {
+    token.value = null
+    user.value = null
+    localStorage.removeItem('access_token')
+  }
+
+  return { token, user, login, register, logout, fetchCurrentUser }
+})