feat: add Douyin OAuth provider (#753)

web/src/Setting.js

@@ -556,6 +556,7 @@ export function getProviderTypeOptions(category) {
         {id: 'Steam', name: 'Steam'},
         {id: 'Bilibili', name: 'Bilibili'},
         {id: 'Okta', name: 'Okta'},
+        {id: 'Douyin', name: 'Douyin'},
         {id: 'Custom', name: 'Custom'},
       ]
     );

web/src/auth/DouyinLoginButton.js

@@ -0,0 +1,32 @@
+// Copyright 2022 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import {createButton} from "react-social-login-buttons";
+import {StaticBaseUrl} from "../Setting";
+
+function Icon({width = 24, height = 24, color}) {
+    return <img src={`${StaticBaseUrl}/buttons/douyin.svg`} alt="Sign in with Douyin" style={{width: 24, height: 24}}/>;
+}
+
+const config = {
+    text: "Sign in with Douyin",
+    icon: Icon,
+    iconFormat: name => `fa fa-${name}`,
+    style: {background: "#ffffff", color: "#000000"},
+    activeStyle: {background: "#ededee"},
+};
+
+const DouyinLoginButton = createButton(config);
+
+export default DouyinLoginButton;

web/src/auth/LoginPage.js

@@ -44,6 +44,7 @@ import AzureADLoginButton from "./AzureADLoginButton";
 import SlackLoginButton from "./SlackLoginButton";
 import SteamLoginButton from "./SteamLoginButton";
 import OktaLoginButton from "./OktaLoginButton";
+import DouyinLoginButton from "./DouyinLoginButton";
 import CustomGithubCorner from "../CustomGithubCorner";
 import {CountDownInput} from "../common/CountDownInput";
 import BilibiliLoginButton from "./BilibiliLoginButton";
@@ -284,6 +285,8 @@ class LoginPage extends React.Component {
       return <BilibiliLoginButton text={text} align={"center"} />
     } else if (type === "Okta") {
       return <OktaLoginButton text={text} align={"center"} />
+    } else if (type === "Douyin") {
+      return <DouyinLoginButton text={text} align={"center"} />
     }
 
     return text;

web/src/auth/Provider.js

@@ -111,6 +111,10 @@ const authInfo = {
     scope: "openid%20profile%20email",
     endpoint: "http://example.com",
   },
+  Douyin: {
+    scope: "user_info",
+    endpoint: "https://open.douyin.com/platform/oauth/connect",
+  },
   Custom: {
     endpoint: "https://example.com/",
   },
@@ -239,6 +243,8 @@ export function getAuthUrl(application, provider, method) {
     return `${endpoint}?openid.claimed_id=http://specs.openid.net/auth/2.0/identifier_select&openid.identity=http://specs.openid.net/auth/2.0/identifier_select&openid.mode=checkid_setup&openid.ns=http://specs.openid.net/auth/2.0&openid.realm=${window.location.origin}&openid.return_to=${redirectUri}?state=${state}`;
   } else if (provider.type === "Okta") {
     return `${provider.domain}/v1/authorize?client_id=${provider.clientId}&redirect_uri=${redirectUri}&state=${state}&response_type=code&scope=${scope}`;
+  } else if (provider.type === "Douyin") {
+    return `${endpoint}?client_key=${provider.clientId}&redirect_uri=${redirectUri}&state=${state}&response_type=code&scope=${scope}`;
   } else if (provider.type === "Custom") {
     return `${provider.customAuthUrl}?client_id=${provider.clientId}&redirect_uri=${redirectUri}&scope=${provider.customScope}&response_type=code&state=${state}`;
   } else if (provider.type === "Bilibili") {