---
# Identity config as code (R-IDP-03): the `homelab` realm — groups, roles, OIDC clients, brute-force
# hardening, and a conditional MFA flow that REQUIRES OTP for platform-admins (R-IDP-04). Reconciled
# declaratively by the Keycloak Operator; CARRIED BY platform-config (dependsOn platform).
#
# Client secrets are NOT in this file: they are injected from the SOPS-encrypted keycloak-realm-clients
# Secret via spec.placeholders ($(env:...)) — so secrets exist only encrypted (R-IDP-04; SOPS, docs/07).
# Until that Secret is filled (operator hand-off, see keycloak-realm-clients.sops.yaml.example), this
# import stays PENDING on the unresolved placeholder.
apiVersion: k8s.keycloak.org/v2alpha1
kind: KeycloakRealmImport
metadata:
  name: homelab
  namespace: keycloak
spec:
  keycloakCRName: keycloak
  placeholders:
    GRAFANA_CLIENT_SECRET:
      secret:
        name: keycloak-realm-clients
        key: grafana-client-secret
    OAUTH2_PROXY_CLIENT_SECRET:
      secret:
        name: keycloak-realm-clients
        key: oauth2-proxy-client-secret
  realm:
    realm: homelab
    enabled: true
    displayName: "Homelab SSO"
    loginWithEmailAllowed: true
    registrationAllowed: false
    resetPasswordAllowed: true
    # Hardening (docs/15): brute-force detection ON; SSL required for external (edge-TLS) requests.
    bruteForceProtected: true
    permanentLockout: false
    sslRequired: external
    # --- Authorization model (R-IDP-06): groups drive access; platform-admins carry a realm role. ---
    roles:
      realm:
        - name: platform-admin
          description: "Privileged platform administrators — MFA required (R-IDP-04)."
    groups:
      - name: platform-admins
        realmRoles:
          - platform-admin
      - name: media-users
      - name: viewers
    # --- OIDC clients (native SSO). Group membership is exposed as a `groups` claim so apps and
    #     oauth2-proxy can authorize by group (R-IDP-06). ---
    clients:
      # Grafana — the concrete native-OIDC SSO proof target (docs/10 / deliverable #4).
      - clientId: grafana
        name: Grafana
        protocol: openid-connect
        enabled: true
        publicClient: false
        standardFlowEnabled: true
        directAccessGrantsEnabled: false
        secret: "$(env:GRAFANA_CLIENT_SECRET)"
        redirectUris:
          - https://grafana.home.keithjackson.dev/login/generic_oauth
        webOrigins:
          - https://grafana.home.keithjackson.dev
        defaultClientScopes:
          - email
          - profile
          - roles
        protocolMappers:
          - name: groups
            protocol: openid-connect
            protocolMapper: oidc-group-membership-mapper
            config:
              "full.path": "false"
              "id.token.claim": "true"
              "access.token.claim": "true"
              "userinfo.token.claim": "true"
              "claim.name": groups
      # oauth2-proxy — forward-auth for non-OIDC UIs (PiHole, *arr, Prometheus, Alertmanager, …).
      - clientId: oauth2-proxy
        name: oauth2-proxy (forward-auth)
        protocol: openid-connect
        enabled: true
        publicClient: false
        standardFlowEnabled: true
        directAccessGrantsEnabled: false
        secret: "$(env:OAUTH2_PROXY_CLIENT_SECRET)"
        redirectUris:
          - https://*.home.keithjackson.dev/oauth2/callback
          - https://auth.home.keithjackson.dev/oauth2/callback
        webOrigins:
          - https://*.home.keithjackson.dev
        defaultClientScopes:
          - email
          - profile
          - roles
        protocolMappers:
          - name: groups
            protocol: openid-connect
            protocolMapper: oidc-group-membership-mapper
            config:
              "full.path": "false"
              "id.token.claim": "true"
              "access.token.claim": "true"
              "userinfo.token.claim": "true"
              "claim.name": groups
      # kubernetes — kubectl OIDC login via kubelogin (int128/kubelogin `oidc-login`). PUBLIC client +
      # PKCE (S256) so NO client secret lives in any user's kubeconfig; kubelogin runs the auth-code
      # +PKCE flow against a localhost callback and caches the ID token. The k3s API server validates
      # that ID token (kube-apiserver oidc-issuer-url=this realm, oidc-client-id=kubernetes,
      # oidc-username-claim=email, oidc-groups-claim=groups); RBAC binds the `groups` claim — see
      # k8s-oidc-rbac.yaml (oidc:platform-admins -> cluster-admin, oidc:viewers -> view). The cert
      # kubeconfig remains the break-glass admin, independent of Keycloak/OIDC availability.
      - clientId: kubernetes
        name: Kubernetes (kubectl)
        protocol: openid-connect
        enabled: true
        publicClient: true
        standardFlowEnabled: true
        directAccessGrantsEnabled: false
        attributes:
          "pkce.code.challenge.method": "S256"
        redirectUris:
          - http://localhost:8000
          - http://localhost:8000/
          - http://localhost:18000
          - http://localhost:18000/
          - http://127.0.0.1:8000
          - http://127.0.0.1:8000/
          - http://127.0.0.1:18000
          - http://127.0.0.1:18000/
        webOrigins:
          - http://localhost
          - http://127.0.0.1
        defaultClientScopes:
          - email
          - profile
          - roles
        protocolMappers:
          - name: groups
            protocol: openid-connect
            protocolMapper: oidc-group-membership-mapper
            config:
              "full.path": "false"
              "id.token.claim": "true"
              "access.token.claim": "true"
              "userinfo.token.claim": "true"
              "claim.name": groups
    # --- MFA for platform-admins (R-IDP-04): a browser flow whose OTP step is CONDITIONAL on the
    #     platform-admin role. Non-admins log in without OTP; platform-admins must enroll/present TOTP.
    #     Set as the realm browserFlow below. VERIFY at bring-up (see runbook): a malformed flow fails
    #     the whole import — if so, the fallback is to comment this block + browserFlow and configure
    #     the conditional-OTP-by-role flow via the admin console. ---
    authenticationFlows:
      - alias: browser-mfa
        description: "Browser flow with conditional OTP required for platform-admins."
        providerId: basic-flow
        topLevel: true
        builtIn: false
        authenticationExecutions:
          - authenticator: auth-cookie
            authenticatorFlow: false
            requirement: ALTERNATIVE
            priority: 10
            userSetupAllowed: false
          - authenticator: identity-provider-redirector
            authenticatorFlow: false
            requirement: ALTERNATIVE
            priority: 20
            userSetupAllowed: false
          - authenticatorFlow: true
            requirement: ALTERNATIVE
            priority: 30
            flowAlias: browser-mfa-forms
            userSetupAllowed: false
      - alias: browser-mfa-forms
        description: "Username/password then conditional OTP."
        providerId: basic-flow
        topLevel: false
        builtIn: false
        authenticationExecutions:
          - authenticator: auth-username-password-form
            authenticatorFlow: false
            requirement: REQUIRED
            priority: 10
            userSetupAllowed: false
          - authenticatorFlow: true
            requirement: CONDITIONAL
            priority: 20
            flowAlias: browser-mfa-conditional-otp
            userSetupAllowed: false
      - alias: browser-mfa-conditional-otp
        description: "Require OTP only for users with the platform-admin role."
        providerId: basic-flow
        topLevel: false
        builtIn: false
        authenticationExecutions:
          - authenticator: conditional-user-role
            authenticatorFlow: false
            requirement: REQUIRED
            priority: 10
            authenticatorConfig: conditional-otp-platform-admin
            userSetupAllowed: false
          - authenticator: auth-otp-form
            authenticatorFlow: false
            requirement: REQUIRED
            priority: 20
            userSetupAllowed: false
    authenticatorConfig:
      - alias: conditional-otp-platform-admin
        config:
          "condition.evaluated.user.role": platform-admin
          negate: "false"
    browserFlow: browser-mfa