---
# yaml-language-server: $schema=https://kubernetes-schemas.pages.dev/helm.toolkit.fluxcd.io/helmrelease_v2.json
apiVersion: helm.toolkit.fluxcd.io/v2
kind: HelmRelease
metadata:
  name: nginx-external
spec:
  interval: 30m
  chart:
    spec:
      chart: ingress-nginx
      version: 4.11.3
      sourceRef:
        kind: HelmRepository
        name: ingress-nginx
        namespace: flux-system
  install:
    remediation:
      retries: 3
  upgrade:
    cleanupOnFail: true
    remediation:
      strategy: rollback
      retries: 3
  values:
    fullnameOverride: nginx-external
    controller:
      replicaCount: 2
      service:
        annotations:
          io.cilium/lb-ipam-ips: 192.168.1.50
        ports:
          https: 8443
      
      ingressClassResource:
        name: external
        default: false
        controllerValue: k8s.io/external
      
      admissionWebhooks:
        objectSelector:
          matchExpressions:
            - key: ingress-class
              operator: In
              values: ["external"]

      allowSnippetAnnotations: true
      config:
        # taken from https://github.com/superseriousbusiness/gotosocial/blob/main/internal/web/robots.go
        block-user-agents: "GPTBot,~*GPTBot*,ChatGPT-User,~*ChatGPT-User*,Google-Extended,~*Google-Extended*,CCBot,~*CCBot*,Omgilibot,~*Omgilibot*,FacebookBot,~*FacebookBot*"
        client-body-buffer-size: 100M
        client-body-timeout: 120
        client-header-timeout: 120
        enable-brotli: "true"
        enable-ocsp: "true"
        enable-real-ip: "true"
        force-ssl-redirect: "true"
        hide-headers: Server,X-Powered-By
        hsts-max-age: 31449600
        keep-alive-requests: 10000
        keep-alive: 120
        log-format-escape-json: "true"
        log-format-upstream: >
          {"time": "$time_iso8601", "remote_addr": "$proxy_protocol_addr", "x_forwarded_for": "$proxy_add_x_forwarded_for",
          "request_id": "$req_id", "remote_user": "$remote_user", "bytes_sent": $bytes_sent, "request_time": $request_time,
          "status": $status, "vhost": "$host", "request_proto": "$server_protocol", "path": "$uri", "request_query": "$args",
          "request_length": $request_length, "duration": $request_time, "method": "$request_method", "http_referrer": "$http_referer",
          "http_user_agent": "$http_user_agent"}
        proxy-body-size: 0
        proxy-buffer-size: 16k
        ssl-protocols: TLSv1.3 TLSv1.2
        use-forwarded-headers: "true"
      
      metrics:
        enabled: false # TODO
        serviceMonitor:
          enabled: true
          namespaceSelector:
            any: true
      
      extraArgs:
        default-ssl-certificate: nginx/wildcard-main-tls

      terminationGracePeriodSeconds: 120
      topologySpreadConstraints:
        - maxSkew: 1
          topologyKey: kubernetes.io/hostname
          whenUnsatisfiable: DoNotSchedule
          labelSelector:
            matchLabels:
              app.kubernetes.io/name: ingress-nginx
              app.kubernetes.io/instance: nginx-external
              app.kubernetes.io/component: controller
      
      resources:
        requests:
          cpu: 100m
        limits:
          memory: 500Mi
    
    defaultBackend:
      enabled: false