---
# yaml-language-server: $schema=https://kubernetes-schemas.pages.dev/helm.toolkit.fluxcd.io/helmrelease_v2.json
apiVersion: helm.toolkit.fluxcd.io/v2
kind: HelmRelease
metadata:
  name: nginx-external
spec:
  interval: 30m
  chart:
    spec:
      chart: ingress-nginx
      version: 4.13.0
      sourceRef:
        kind: HelmRepository
        name: ingress-nginx
  install:
    remediation:
      retries: 3
  upgrade:
    cleanupOnFail: true
    remediation:
      retries: 3
  values:
    fullnameOverride: nginx-external
    controller:
      service:
        annotations:
          external-dns.alpha.kubernetes.io/hostname: &hostname "external.${SECRET_EXTERNAL_DOMAIN}"
          lbipam.cilium.io/ips: ${CLUSTER_LB_NGINX_EXTERNAL}
        externalTrafficPolicy: Local
      ingressClassResource:
        name: external
        default: false
        controllerValue: k8s.io/external
      admissionWebhooks:
        objectSelector:
          matchExpressions:
            - key: ingress-class
              operator: In
              values: [external]
      config:
        # allow-snippet-annotations: true
        annotations-risk-level: Critical
        block-user-agents: AdsBot-Google,Amazonbot,anthropic-ai,Applebot-Extended,Bytespider,CCBot,ChatGPT-User,ClaudeBot,Claude-Web,cohere-ai,Diffbot,FacebookBot,FriendlyCrawler,Google-Extended,GoogleOther,GPTBot,img2dataset,omgili,omgilibot,peer39_crawler,peer39_crawler/1.0,PerplexityBot,YouBot, # taken from https://github.com/ai-robots-txt/ai.robots.txt
        client-body-buffer-size: 100M
        client-body-timeout: 120
        client-header-timeout: 120
        custom-http-errors: 400,403,404,500,501,502,503,504
        enable-brotli: "true"
        enable-ocsp: "true"
        enable-real-ip: "true"
        force-ssl-redirect: "true"
        hide-headers: Server,X-Powered-By
        hsts-max-age: 31449600
        keep-alive-requests: 10000
        keep-alive: 120
        log-format-escape-json: "true"
        log-format-upstream: >
          {"time": "$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
        proxy-busy-buffers-size: 16k
        ssl-protocols: TLSv1.3 TLSv1.2
        use-forwarded-headers: "true"
      metrics:
        enabled: true
        serviceMonitor:
          enabled: true
          namespaceSelector:
            any: true
      extraArgs:
        default-ssl-certificate: |-
          network/${SECRET_EXTERNAL_DOMAIN//./-}-tls
        publish-status-address: *hostname
      terminationGracePeriodSeconds: 120
      publishService:
        enabled: false
      resources:
        requests:
          cpu: 100m
        limits:
          memory: 500Mi
    defaultBackend:
      enabled: true
      image:
        repository: ghcr.io/tarampampam/error-pages
        tag: 3.3.3@sha256:df7d8d24740316f3918b8c280eff61c30c4055daeef2041d3f557bb54187133d
        pullPolicy: IfNotPresent
      extraEnvs:
        - name: TEMPLATE_NAME
          value: connection
        - name: SHOW_DETAILS
          value: "true"
        - name: READ_BUFFER_SIZE
          value: "8192"
        - name: SEND_SAME_HTTP_CODE
          value: "true"