// Copyright 2018 The Operator-SDK 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 helm

import (
	"path/filepath"

	"github.com/operator-framework/operator-sdk/internal/scaffold"
	"github.com/operator-framework/operator-sdk/internal/scaffold/input"
)

// Operator specifies the Helm operator.yaml manifest scaffold
type Operator struct {
	input.Input
}

// GetInput gets the scaffold execution input
func (s *Operator) GetInput() (input.Input, error) {
	if s.Path == "" {
		s.Path = filepath.Join(scaffold.DeployDir, scaffold.OperatorYamlFile)
	}
	s.TemplateBody = operatorTemplate
	return s.Input, nil
}

const operatorTemplate = `apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{.ProjectName}}
spec:
  replicas: 1
  selector:
    matchLabels:
      name: {{.ProjectName}}
  template:
    metadata:
      labels:
        name: {{.ProjectName}}
    spec:
      serviceAccountName: {{.ProjectName}}
      containers:
        - name: {{.ProjectName}}
          # Replace this with the built image name
          image: REPLACE_IMAGE
          imagePullPolicy: Always
          env:
            - name: WATCH_NAMESPACE
              valueFrom:
                fieldRef:
                  fieldPath: metadata.namespace
            - name: POD_NAME
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: OPERATOR_NAME
              value: "{{.ProjectName}}"
`
