package main

import (
	"time"

	"github.com/containers/libpod/cmd/podman/cliconfig"
	"github.com/containers/libpod/pkg/adapter"
	"github.com/pkg/errors"
	"github.com/spf13/cobra"
)

var (
	waitCommand cliconfig.WaitValues

	waitDescription = `Block until one or more containers stop and then print their exit codes.
`
	_waitCommand = &cobra.Command{
		Use:   "wait [flags] CONTAINER [CONTAINER...]",
		Short: "Block on one or more containers",
		Long:  waitDescription,
		RunE: func(cmd *cobra.Command, args []string) error {
			waitCommand.InputArgs = args
			waitCommand.GlobalFlags = MainGlobalOpts
			waitCommand.Remote = remoteclient
			return waitCmd(&waitCommand)
		},
		Example: `podman wait --latest
  podman wait --interval 5000 ctrID
  podman wait ctrID1 ctrID2`,
	}
)

func init() {
	waitCommand.Command = _waitCommand
	waitCommand.SetHelpTemplate(HelpTemplate())
	waitCommand.SetUsageTemplate(UsageTemplate())
	flags := waitCommand.Flags()
	flags.UintVarP(&waitCommand.Interval, "interval", "i", 250, "Milliseconds to wait before polling for completion")
	flags.BoolVarP(&waitCommand.Latest, "latest", "l", false, "Act on the latest container podman is aware of")
	markFlagHiddenForRemoteClient("latest", flags)
}

func waitCmd(c *cliconfig.WaitValues) error {
	args := c.InputArgs
	if len(args) < 1 && !c.Latest {
		return errors.Errorf("you must provide at least one container name or id")
	}

	if c.Interval == 0 {
		return errors.Errorf("interval must be greater then 0")
	}
	interval := time.Duration(c.Interval) * time.Millisecond

	runtime, err := adapter.GetRuntime(getContext(), &c.PodmanCommand)
	if err != nil {
		return errors.Wrapf(err, "error creating runtime")
	}
	defer runtime.DeferredShutdown(false)

	ok, failures, err := runtime.WaitOnContainers(getContext(), c, interval)
	if err != nil {
		return err
	}
	return printCmdResults(ok, failures)
}