/*
 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

     https://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 cluster

import (
	"github.com/spf13/cobra"

	"opendev.org/airship/airshipctl/pkg/config"
	"opendev.org/airship/airshipctl/pkg/phase"
)

const (
	listLong = `
Retrieve and list the defined clusters in table form or display just the cluster names. The contents of the
table would include cluster name, kubeconfig context and parent cluster name.
`

	listExample = `
Retrieve list of clusters
# airshipctl cluster list --airshipconf /tmp/airconfig
# airshipctl cluster list -o table
# airshipctl cluster list -o name
`
)

// NewListCommand creates a command which retrieves list of clusters
func NewListCommand(cfgFactory config.Factory) *cobra.Command {
	o := &phase.ClusterListCommand{Factory: cfgFactory}
	cmd := &cobra.Command{
		Use:     "list",
		Short:   "Airshipctl command to get and list defined clusters",
		Long:    listLong[1:],
		Example: listExample,
		RunE:    listRunE(o),
	}
	flags := cmd.Flags()
	flags.StringVarP(&o.Format, "output", "o", "name", "output formats. Supported options are 'table' and 'name'")

	return cmd
}

// listRunE returns a function to cobra command to be executed in runtime
func listRunE(o *phase.ClusterListCommand) func(
	cmd *cobra.Command, args []string) error {
	return func(cmd *cobra.Command, args []string) error {
		o.Writer = cmd.OutOrStdout()
		return o.RunE()
	}
}