feat(providers): add WeChat

src/providers/wechat.js

@@ -0,0 +1,30 @@
+export default function WeChat(options) {
+  return {
+    id: "wechat",
+
+    name: "WeChat",
+    type: "oauth",
+    version: "2.0",
+    scope: options.scope,
+    params: { grant_type: "authorization_code" },
+    authorizationParams: {
+      appid: options.clientId
+    },
+    protection: "state",
+
+    accessTokenUrl: "https://api.weixin.qq.com/sns/oauth2/access_token",
+    authorizationUrl:
+      "https://open.weixin.qq.com/connect/oauth2/authorize?response_type=code",
+    profileUrl: "https://api.weixin.qq.com/sns/userinfo",
+
+    async profile(profile) {
+      return {
+        id: profile.openid,
+        nickname: profile.nickname,
+        avatar: profile.headimgurl
+      }
+    },
+    clientId: options.clientId,
+    clientSecret: options.clientSecret
+  }
+}

src/server/lib/oauth/client.js

@@ -131,6 +131,9 @@ async function getOAuth2AccessToken (code, provider, codeVerifier) {
     { algorithm: 'ES256', keyid: keyId }
     )
     params.client_secret = clientSecret
+  } else if (provider.id === 'wechat') {
+    params.appid = provider.clientId || provider.appid
+    params.secret = provider.clientSecret;
   } else {
     params.client_secret = provider.clientSecret
   }
@@ -232,6 +235,17 @@ async function getOAuth2 (provider, accessToken, results) {
     if (provider.id === 'twitch') {
       headers['Client-ID'] = provider.clientId
     }
+
+    // WeChat has different url params design
+    if (provider.id === 'wechat') {
+      const wechatProfileURL = new URL(url)
+
+      wechatProfileURL.searchParams.append('access_token', results.accessToken)
+      wechatProfileURL.searchParams.append('openid', results.openid)
+
+      url = wechatProfileURL.href
+    }
+
     accessToken = null
   }
 

types/providers.d.ts

@@ -98,6 +98,7 @@ export type OAuthProviderType =
   | "Twitch"
   | "Twitter"
   | "VK"
+  | "WeChat"
   | "WordPress"
   | "WorkOS"
   | "Yandex"

www/docs/providers/wechat.md

@@ -0,0 +1,30 @@
+---
+id: wechat
+title: WeChat
+---
+
+## Documentation
+
+https://developers.weixin.qq.com/doc/offiaccount/en/OA_Web_Apps/Wechat_webpage_authorization.html
+
+## Options
+
+The **WeChat Provider** comes with a set of default options:
+
+- [WeChat Provider options](https://github.com/nextauthjs/next-auth/blob/main/src/providers/wechat.js)
+
+You can override any of the options to suit your own use case.
+
+## Example
+
+```js
+import Providers from `next-auth/providers`
+...
+providers: [
+  Providers.WeChat({
+    clientId: process.env.WECHAT_APP_ID,
+    clientSecret: process.env.WECHAT_APP_SECRET
+  })
+]
+...
+```