wiki-security-passportjs/docs/config-oauth2.md

{
  "farm": true,
  "security_type": "passportjs",
  "oauth2_clientID": "CLIENT ID",
  "oauth2_clientSecret": "CLIENT SECRET",
  "oauth2_AuthorizationURL": "https://auth.example.com/oauth2/authorize",
  "oauth2_TokenURL": "https://auth.example.com/oauth2/token",
  "wikiDomains": {
    "example.wiki": {}
  }
}