package provision

import (
	"fmt"

	"github.com/docker/machine/libmachine/auth"
	"github.com/docker/machine/libmachine/mcndockerclient"
	"github.com/samalba/dockerclient"
)

// DockerClient implements DockerHost(mcndockerclient) interface
type DockerClient struct {
	HostURL    string
	AuthOption auth.Options
}

// URL returns the Docker host URL
func (dc DockerClient) URL() (string, error) {
	if dc.HostURL == "" {
		return "", fmt.Errorf("Docker Host URL not set")
	}

	return dc.HostURL, nil
}

// AuthOptions returns the authOptions
func (dc DockerClient) AuthOptions() *auth.Options {
	return &dc.AuthOption
}

//CreateContainer creates a docker container.
func CreateContainer(dockerHost DockerClient, config *dockerclient.ContainerConfig, name string) error {

	docker, err := mcndockerclient.DockerClient(dockerHost)
	if err != nil {
		return err
	}

	if err = docker.PullImage(config.Image, nil); err != nil {
		return fmt.Errorf("Unable to Pull Image: %s", err)
	}

	containerID, err := docker.CreateContainer(config, name)
	if err != nil {
		return fmt.Errorf("Error while creating container: %s", err)
	}

	if err = docker.StartContainer(containerID, &config.HostConfig); err != nil {
		return fmt.Errorf("Error while starting container: %s", err)
	}

	return nil
}