chore: import upstream snapshot with attribution

api/strategies/githubStrategy.js

@@ -0,0 +1,46 @@
+const { Strategy: GitHubStrategy } = require('passport-github2');
+const socialLogin = require('./socialLogin');
+
+const getProfileDetails = ({ profile }) => ({
+  email: profile.emails[0].value,
+  id: profile.id,
+  avatarUrl: profile.photos[0].value,
+  username: profile.username,
+  name: profile.displayName,
+  emailVerified: profile.emails[0].verified,
+});
+
+const githubLogin = socialLogin('github', getProfileDetails);
+const githubAdminLogin = socialLogin('github', getProfileDetails, { existingUsersOnly: true });
+
+const getGitHubConfig = (callbackURL) => ({
+  clientID: process.env.GITHUB_CLIENT_ID,
+  clientSecret: process.env.GITHUB_CLIENT_SECRET,
+  callbackURL,
+  proxy: false,
+  scope: ['user:email'],
+  ...(process.env.GITHUB_ENTERPRISE_BASE_URL && {
+    authorizationURL: `${process.env.GITHUB_ENTERPRISE_BASE_URL}/login/oauth/authorize`,
+    tokenURL: `${process.env.GITHUB_ENTERPRISE_BASE_URL}/login/oauth/access_token`,
+    userProfileURL: `${process.env.GITHUB_ENTERPRISE_BASE_URL}/api/v3/user`,
+    userEmailURL: `${process.env.GITHUB_ENTERPRISE_BASE_URL}/api/v3/user/emails`,
+    ...(process.env.GITHUB_ENTERPRISE_USER_AGENT && {
+      userAgent: process.env.GITHUB_ENTERPRISE_USER_AGENT,
+    }),
+  }),
+});
+
+const githubStrategy = () =>
+  new GitHubStrategy(
+    getGitHubConfig(`${process.env.DOMAIN_SERVER}${process.env.GITHUB_CALLBACK_URL}`),
+    githubLogin,
+  );
+
+const githubAdminStrategy = () =>
+  new GitHubStrategy(
+    getGitHubConfig(`${process.env.DOMAIN_SERVER}/api/admin/oauth/github/callback`),
+    githubAdminLogin,
+  );
+
+module.exports = githubStrategy;
+module.exports.githubAdminLogin = githubAdminStrategy;