feat: add GitHub OAuth login

open-isle-cli/src/utils/github.js

@@ -0,0 +1,41 @@
+import { API_BASE_URL, GITHUB_CLIENT_ID, toast } from '../main'
+import { setToken, loadCurrentUser } from './auth'
+
+export function githubAuthorize(state = '') {
+  if (!GITHUB_CLIENT_ID) {
+    toast.error('GitHub 登录不可用')
+    return
+  }
+  const redirectUri = `${window.location.origin}/github-callback`
+  const url = `https://github.com/login/oauth/authorize?client_id=${GITHUB_CLIENT_ID}&redirect_uri=${encodeURIComponent(redirectUri)}&scope=user:email&state=${state}`
+  window.location.href = url
+}
+
+export async function githubExchange(code, state, reason) {
+  try {
+    const res = await fetch(`${API_BASE_URL}/api/auth/github`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ code, redirectUri: `${window.location.origin}/github-callback`, reason, state })
+    })
+    const data = await res.json()
+    if (res.ok && data.token) {
+      setToken(data.token)
+      await loadCurrentUser()
+      toast.success('登录成功')
+      return true
+    } else if (data.reason_code === 'NOT_APPROVED') {
+      toast.info('当前为注册审核模式，请填写注册理由')
+      sessionStorage.setItem('github_code', code)
+      return 'NEED_REASON'
+    } else if (data.reason_code === 'IS_APPROVING') {
+      toast.info('您的注册理由正在审批中')
+      return true
+    } else {
+      toast.error(data.error || '登录失败')
+    }
+  } catch (e) {
+    toast.error('登录失败')
+  }
+  return false
+}