package command

import (
	"bufio"
	"bytes"
	"fmt"
	"sort"
	"strings"
)

// MountsCommand is a Command that lists the mounts.
type MountsCommand struct {
	Meta
}

func (c *MountsCommand) Run(args []string) int {
	flags := c.Meta.FlagSet("mounts", FlagSetDefault)
	flags.Usage = func() { c.Ui.Error(c.Help()) }
	if err := flags.Parse(args); err != nil {
		return 1
	}

	client, err := c.Client()
	if err != nil {
		c.Ui.Error(fmt.Sprintf(
			"Error initializing client: %s", err))
		return 2
	}

	mounts, err := client.Sys().ListMounts()
	if err != nil {
		c.Ui.Error(fmt.Sprintf(
			"Error reading mounts: %s", err))
		return 2
	}

	paths := make([]string, 0, len(mounts))
	for path, _ := range mounts {
		paths = append(paths, path)
	}
	sort.Strings(paths)

	for _, path := range paths {
		mount := mounts[path]

		var desc bytes.Buffer
		s := bufio.NewScanner(strings.NewReader(mount.Description))
		for s.Scan() {
			desc.WriteString("  " + s.Text())
		}

		c.Ui.Output(fmt.Sprintf(
			"%s (type: %s)\n%s\n",
			path,
			mount.Type,
			desc.String()))
	}

	return 0
}

func (c *MountsCommand) Synopsis() string {
	return "Lists mounted backends in Vault"
}

func (c *MountsCommand) Help() string {
	helpText := `
Usage: vault mounts [options]

  Outputs information about the mounted backends.

  This command lists the mounted backends, their mount points, and
  a human-friendly description of the mount point.

General Options:

  -address=TODO           The address of the Vault server.

  -ca-cert=path           Path to a PEM encoded CA cert file to use to
                          verify the Vault server SSL certificate.

  -ca-path=path           Path to a directory of PEM encoded CA cert files
                          to verify the Vault server SSL certificate. If both
                          -ca-cert and -ca-path are specified, -ca-path is used.

  -insecure               Do not verify TLS certificate. This is highly
                          not recommended. This is especially not recommended
                          for unsealing a vault.

`
	return strings.TrimSpace(helpText)
}