✨ Refreshing token

src/services/network.ts

@@ -1,12 +1,68 @@
-import axios from 'axios'
+import axios, { AxiosInstance } from 'axios'
 import applyCaseMiddleware from 'axios-case-converter'
+import { hasCookie, getCookie, setCookie } from 'cookies-next/client'
 
-export let sni = applyCaseMiddleware(
-  axios.create({
-    baseURL: 'https://api.sn.solsynth.dev',
-  }),
-  {
+const baseURL = 'https://api.solsynth.dev'
+
+export let sni: AxiosInstance = (() => {
+  const inst = axios.create({
+    baseURL,
+  })
+
+  inst.interceptors.request.use(
+    async (config) => {
+      const tk = await refreshToken()
+      if (tk) config.headers['Authorization'] = `Bearer ${tk}`
+      return config
+    },
+    (error) => error,
+  )
+
+  applyCaseMiddleware(inst, {
     ignoreParams: true,
     ignoreHeaders: true,
-  },
-)
+  })
+  return inst
+})()
+
+async function refreshToken(): Promise<string | undefined> {
+  if (!hasCookie('nex_user_atk') || !hasCookie('nex_user_rtk')) return
+
+  const ogTk: string = getCookie('nex_user_atk')!
+  if (!isTokenExpired(ogTk)) return
+
+  const resp = await axios.post('/cgi/id/auth/token', {
+    refresh_token: getCookie('nex_user_rtk')!,
+    grant_type: 'refresh_token',
+  })
+  const atk: string = resp.data['accessToken']
+  const rtk: string = resp.data['refreshToken']
+  setCookie('nex_user_atk', atk, { path: '/', maxAge: 2592000 })
+  setCookie('nex_user_rtk', rtk, { path: '/', maxAge: 2592000 })
+
+  console.log('[Authenticator] Refreshed token...')
+
+  return atk
+}
+
+function isTokenExpired(token: string): boolean {
+  try {
+    const parts = token.split('.')
+    if (parts.length !== 3) {
+      throw new Error('Invalid JWT format')
+    }
+
+    const payload = JSON.parse(atob(parts[1]))
+
+    if (!payload.exp) {
+      throw new Error("'exp' claim is missing in the JWT payload")
+    }
+
+    const now = Math.floor(Date.now() / 1000)
+
+    return now >= payload.exp
+  } catch (error) {
+    console.error('[Authenticator] Something went wrong with token: ', error)
+    return true
+  }
+}