apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: create-ingress
spec:
  volumes:
  - name: work
    emptyDir: {}

  params:
  - name: CreateCertificate
    description: "Enables/disables the creation of a self-signed certificate for $(params.ExternalDomain)"
    default: "true"
  - name: CertificateKeyPassphrase
    description: "Phrase that protects private key. This must be provided when the self-signed certificate is created"
  - name: CertificateSecretName
    description: "Secret name for Ingress certificate. The Secret should not exist if the self-signed certificate creation is enabled"
  - name: ExternalDomain
    description: "The external domain for the EventListener e.g. `$(params.EventListenerName).PROXYIP.nip.io`"
  - name: Service
    description: "The name of the Service used in the Ingress. This will also be the name of the Ingress."
  - name: ServicePort
    description: "The service port that the ingress is being created on"
  - name: ServiceUID
    description: "The uid of the service. If set, this creates an owner reference on the service"
    default: ""

  steps:
  - name: generate-certificate
    image: frapsoft/openssl
    volumeMounts:
    - name: work
      mountPath: /var/tmp/work
    command:
    - sh
    args:
    - -ce
    - |
      set -e
      cat <<EOF | sh
      #!/bin/sh
      if [ $(params.CreateCertificate) = "false" ];then
        exit 0
      fi
      mkdir /var/tmp/work/ingress
      openssl genrsa -des3 -out /var/tmp/work/ingress/key.pem -passout pass:$(params.CertificateKeyPassphrase) 2048
      openssl req -x509 -new -nodes -key /var/tmp/work/ingress/key.pem -sha256 -days 1825 -out /var/tmp/work/ingress/certificate.pem -passin pass:$(params.CertificateKeyPassphrase) -subj /CN=$(params.ExternalDomain)
      openssl rsa -in /var/tmp/work/ingress/key.pem -out /var/tmp/work/ingress/key.pem -passin pass:$(params.CertificateKeyPassphrase)
      EOF
  - name: create-certificate-secret
    image: lachlanevenson/k8s-kubectl:latest
    volumeMounts:
    - name: work
      mountPath: /var/tmp/work
    command:
    - sh
    args:
    - -ce
    - |
      set -e
      cat <<EOF | sh
      #!/bin/sh
      if [ $(params.CreateCertificate) = "false" ];then
        exit 0
      fi
      kubectl create secret tls $(params.CertificateSecretName) --cert=/var/tmp/work/ingress/certificate.pem --key=/var/tmp/work/ingress/key.pem || true
      EOF
  - name: create-ingress
    image: lachlanevenson/k8s-kubectl:latest
    command:
    - sh
    args:
    - -ce
    - |
      set -e
      if [ -n "$(params.ServiceUID)" ];then
        cat <<EOF | kubectl create -f - || true
        apiVersion: extensions/v1beta1
        kind: Ingress
        metadata:
          name: $(params.Service)
          ownerReferences:
          - name: $(params.Service)
            apiVersion: v1
            kind: Service
            uid: $(params.ServiceUID)
        spec:
          tls:
          - secretName: $(params.CertificateSecretName)
            hosts:
            - $(params.ExternalDomain)
          rules:
          - host: $(params.ExternalDomain)
            http:
              paths:
              - backend:
                  serviceName: $(params.Service)
                  servicePort: $(params.ServicePort)
      EOF
      else
        cat <<EOF | kubectl create -f - || true
        apiVersion: extensions/v1beta1
        kind: Ingress
        metadata:
          name: $(params.Service)
        spec:
          tls:
          - secretName: $(params.CertificateSecretName)
            hosts:
            - $(params.ExternalDomain)
          rules:
          - host: $(params.ExternalDomain)
            http:
              paths:
              - backend:
                  serviceName: $(params.Service)
                  servicePort: $(params.ServicePort)
      EOF
      fi
