/*
Copyright 2020 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package kdefault

import (
	"path/filepath"

	"sigs.k8s.io/kubebuilder/v4/pkg/machinery"
)

var _ machinery.Template = &Kustomization{}

// Kustomization scaffolds a file that defines the kustomization scheme for the default overlay folder
type Kustomization struct {
	machinery.TemplateMixin
	machinery.ProjectNameMixin
	machinery.NamespacedMixin
}

// SetTemplateDefaults implements machinery.Template
func (f *Kustomization) SetTemplateDefaults() error {
	if f.Path == "" {
		f.Path = filepath.Join("config", "default", "kustomization.yaml")
	}

	f.TemplateBody = kustomizeTemplate

	f.IfExistsAction = machinery.Error

	return nil
}

const kustomizeTemplate = `# Adds namespace to all resources.
namespace: {{ .ProjectName }}-system

# Value of this field is prepended to the
# names of all resources, e.g. a deployment named
# "wordpress" becomes "alices-wordpress".
# Note that it should also match with the prefix (text before '-') of the namespace
# field above.
namePrefix: {{ .ProjectName }}-

# Labels to add to all resources and selectors.
#labels:
#- includeSelectors: true
#  pairs:
#    someName: someValue

resources:
#- ../crd
- ../rbac
- ../manager
# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix including the one in
# crd/kustomization.yaml
#- ../webhook
# [CERTMANAGER] To enable cert-manager, uncomment all sections with 'CERTMANAGER'. 'WEBHOOK' components are required.
#- ../certmanager
# [PROMETHEUS] To enable prometheus monitor, uncomment all sections with 'PROMETHEUS'.
#- ../prometheus
# [METRICS] Expose the controller manager metrics service.
- metrics_service.yaml
# [NETWORK POLICY] Protect the /metrics endpoint and Webhook Server with NetworkPolicy.
# Only Pod(s) running a namespace labeled with 'metrics: enabled' will be able to gather the metrics.
# Only CR(s) which requires webhooks and are applied on namespaces labeled with 'webhooks: enabled' will
# be able to communicate with the Webhook Server.
#- ../network-policy

# Uncomment the patches line if you enable Metrics
patches:
# [METRICS] The following patch will enable the metrics endpoint using HTTPS and the port :8443.
# More info: https://book.kubebuilder.io/reference/metrics
- path: manager_metrics_patch.yaml
  target:
    kind: Deployment

# Uncomment the patches line if you enable Metrics and CertManager
# [METRICS-WITH-CERTS] To enable metrics protected with certManager, uncomment the following line.
# This patch will protect the metrics with certManager self-signed certs.
#- path: cert_metrics_manager_patch.yaml
#  target:
#    kind: Deployment

# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix including the one in
# crd/kustomization.yaml
#- path: manager_webhook_patch.yaml
#  target:
#    kind: Deployment

# [CERTMANAGER] To enable cert-manager, uncomment all sections with 'CERTMANAGER' prefix.
# Uncomment the following replacements to add the cert-manager CA injection annotations
#replacements:
# - source: # Uncomment the following block to enable certificates for metrics
#     kind: Service
#     version: v1
#     name: controller-manager-metrics-service
#     fieldPath: metadata.name
#   targets:
#     - select:
#         kind: Certificate
#         group: cert-manager.io
#         version: v1
#         name: metrics-certs
#       fieldPaths:
#         - spec.dnsNames.0
#         - spec.dnsNames.1
#       options:
#         delimiter: '.'
#         index: 0
#         create: true
#     - select: # Uncomment the following to set the Service name for TLS config in Prometheus ServiceMonitor
#         kind: ServiceMonitor
#         group: monitoring.coreos.com
#         version: v1
#         name: controller-manager-metrics-monitor
#       fieldPaths:
#         - spec.endpoints.0.tlsConfig.serverName
#       options:
#         delimiter: '.'
#         index: 0
#         create: true

# - source:
#     kind: Service
#     version: v1
#     name: controller-manager-metrics-service
#     fieldPath: metadata.namespace
#   targets:
#     - select:
#         kind: Certificate
#         group: cert-manager.io
#         version: v1
#         name: metrics-certs
#       fieldPaths:
#         - spec.dnsNames.0
#         - spec.dnsNames.1
#       options:
#         delimiter: '.'
#         index: 1
#         create: true
#     - select: # Uncomment the following to set the Service namespace for TLS in Prometheus ServiceMonitor
#         kind: ServiceMonitor
#         group: monitoring.coreos.com
#         version: v1
#         name: controller-manager-metrics-monitor
#       fieldPaths:
#         - spec.endpoints.0.tlsConfig.serverName
#       options:
#         delimiter: '.'
#         index: 1
#         create: true

# - source: # Uncomment the following block if you have any webhook
#     kind: Service
#     version: v1
#     name: webhook-service
#     fieldPath: .metadata.name # Name of the service
#   targets:
#     - select:
#         kind: Certificate
#         group: cert-manager.io
#         version: v1
#         name: serving-cert
#       fieldPaths:
#         - .spec.dnsNames.0
#         - .spec.dnsNames.1
#       options:
#         delimiter: '.'
#         index: 0
#         create: true
# - source:
#     kind: Service
#     version: v1
#     name: webhook-service
#     fieldPath: .metadata.namespace # Namespace of the service
#   targets:
#     - select:
#         kind: Certificate
#         group: cert-manager.io
#         version: v1
#         name: serving-cert
#       fieldPaths:
#         - .spec.dnsNames.0
#         - .spec.dnsNames.1
#       options:
#         delimiter: '.'
#         index: 1
#         create: true

# - source: # Uncomment the following block if you have a ValidatingWebhook (--programmatic-validation)
#     kind: Certificate
#     group: cert-manager.io
#     version: v1
#     name: serving-cert # This name should match the one in certificate.yaml
#     fieldPath: .metadata.namespace # Namespace of the certificate CR
#   targets:
#     - select:
#         kind: ValidatingWebhookConfiguration
#       fieldPaths:
#         - .metadata.annotations.[cert-manager.io/inject-ca-from]
#       options:
#         delimiter: '/'
#         index: 0
#         create: true
# - source:
#     kind: Certificate
#     group: cert-manager.io
#     version: v1
#     name: serving-cert
#     fieldPath: .metadata.name
#   targets:
#     - select:
#         kind: ValidatingWebhookConfiguration
#       fieldPaths:
#         - .metadata.annotations.[cert-manager.io/inject-ca-from]
#       options:
#         delimiter: '/'
#         index: 1
#         create: true

# - source: # Uncomment the following block if you have a DefaultingWebhook (--defaulting )
#     kind: Certificate
#     group: cert-manager.io
#     version: v1
#     name: serving-cert
#     fieldPath: .metadata.namespace # Namespace of the certificate CR
#   targets:
#     - select:
#         kind: MutatingWebhookConfiguration
#       fieldPaths:
#         - .metadata.annotations.[cert-manager.io/inject-ca-from]
#       options:
#         delimiter: '/'
#         index: 0
#         create: true
# - source:
#     kind: Certificate
#     group: cert-manager.io
#     version: v1
#     name: serving-cert
#     fieldPath: .metadata.name
#   targets:
#     - select:
#         kind: MutatingWebhookConfiguration
#       fieldPaths:
#         - .metadata.annotations.[cert-manager.io/inject-ca-from]
#       options:
#         delimiter: '/'
#         index: 1
#         create: true

# - source: # Uncomment the following block if you have a ConversionWebhook (--conversion)
#     kind: Certificate
#     group: cert-manager.io
#     version: v1
#     name: serving-cert
#     fieldPath: .metadata.namespace # Namespace of the certificate CR
#   targets: # Do not remove or uncomment the following scaffold marker; required to generate code for target CRD.
# +kubebuilder:scaffold:crdkustomizecainjectionns
# - source:
#     kind: Certificate
#     group: cert-manager.io
#     version: v1
#     name: serving-cert
#     fieldPath: .metadata.name
#   targets: # Do not remove or uncomment the following scaffold marker; required to generate code for target CRD.
# +kubebuilder:scaffold:crdkustomizecainjectionname
`
