WeChat Integration ​

• WeChat-related integrations cover many scenarios
• WeChat Pay
• WeChat Official Account Login
• WeChat Official Account QR Code Follow & Login

QR Code Follow & Login (Official Account) ​

• Reference: https://ai.minihuo.com
• Use case: typically on a desktop browser
• Pull QR code from /oauth/weixin/chat

{
  "ticket": "gQH88DwAAAAAAAAAAS5odHRwOi8vd2VpeGluLnFxLmNvbS9xLzAyaGtSNnNQdTVkMEMxYUlIYmhDYzMAAgScnQtmAwQQDgAA",
  "expire_seconds": 3600,
  "url": "http://weixin.qq.com/q/02hkR6sPu5d0C1aIHbhCc3",
  "checkUrl": "/oauth/weixin/token/chat:Dnqffxgt"
}

{
  "ticket": "gQH88DwAAAAAAAAAAS5odHRwOi8vd2VpeGluLnFxLmNvbS9xLzAyaGtSNnNQdTVkMEMxYUlIYmhDYzMAAgScnQtmAwQQDgAA",
  "expire_seconds": 3600,
  "url": "http://weixin.qq.com/q/02hkR6sPu5d0C1aIHbhCc3",
  "checkUrl": "/oauth/weixin/token/chat:Dnqffxgt"
}

• After the user follows, write the wxid to the backend and store it in Redis
• Poll checkUrl to check if the user has scanned (checks Redis for wxid); if found, set cookies accordingly

WeChat Official Account Login (In-App) ​

• Use case: inside WeChat on mobile
• Reference: visit https://ai.minihuo.com inside WeChat
• Redirect to https://www.lingduquan.com/oauth/weixin?f=chat — this sets a cookie based on the source
• Step 2: determine which wxapp based on source, then get the required key and URL
• Step 3: get code and complete login