# gitlab-oidc-secret was a manually kubectl-created plain Secret (never
# git-tracked, never rotatable, no record of what it was) - found and
# fixed 2026-08-20 alongside infrastructure/authentik/gitlab-blueprint.yaml
# (same value, same Vault path - see that file for the full story).
#
# `provider` key added 2026-08-21: found live that GITLAB_OMNIBUS_CONFIG's
# `gitlab_rails['omniauth_providers'] = [...]` (still set in this app's
# values.yaml's extraEnv, for reference/documentation only at this point)
# is an omnibus-image-only convention - the CNG webservice image this
# chart actually runs never processes it, so it was always a no-op and
# GitLab never had SSO configured despite it looking configured. The
# REAL mechanism (gitlab/charts/gitlab/templates/_omniauth.tpl in the
# chart) is global.appConfig.omniauth.providers: a list of
# {secret, key} refs, each pointing at a Secret key whose value is a
# whole YAML-encoded provider block (loaded via Ruby's YAML.load_file
# at container start, baked into gitlab.yml) - not raw client_id/secret
# strings. This is also why the `providers:` list got removed entirely
# a day earlier chasing a "FailedMount: references non-existent secret
# key: provider" error: the fix should have been to populate that key
# correctly (this), not remove the reference to it - doing so silently
# killed SSO on both home and VPS GitLab (no error, the login page just
# had no SSO button).
apiVersion: external-secrets.io/v1
kind: ExternalSecret
metadata:
  name: gitlab-oidc
  namespace: gitlab
spec:
  refreshInterval: 1h
  secretStoreRef:
    kind: ClusterSecretStore
    name: vault-backend
  target:
    name: gitlab-oidc-secret
    creationPolicy: Owner
    template:
      type: Opaque
      data:
        GITLAB_OIDC_CLIENT_ID: "{{ .clientId }}"
        GITLAB_OIDC_CLIENT_SECRET: "{{ .clientSecret }}"
        provider: |
          name: openid_connect
          label: Authentik
          args:
            name: openid_connect
            scope:
              - openid
              - profile
              - email
            response_type: code
            issuer: 'https://auth.kube.huskypup.net/application/o/gitlab/'
            discovery: true
            client_auth_method: query
            uid_field: sub
            send_scope_to_token_endpoint: true
            pkce: true
            client_options:
              identifier: '{{ .clientId }}'
              secret: '{{ .clientSecret }}'
              redirect_uri: 'https://gitlab.kube.huskypup.net/users/auth/openid_connect/callback'
  data:
    - secretKey: clientId
      remoteRef:
        key: gitlab-oauth
        property: client-id
    - secretKey: clientSecret
      remoteRef:
        key: gitlab-oauth
        property: client-secret