package daemon

import (
	"io/ioutil"
	"os"
	"path/filepath"
	"testing"

	"github.com/docker/docker/pkg/signal"
	"github.com/docker/docker/runconfig"
	"github.com/docker/docker/volume"
	"github.com/docker/docker/volume/drivers"
)

func TestGetFullName(t *testing.T) {
	name, err := GetFullContainerName("testing")
	if err != nil {
		t.Fatal(err)
	}
	if name != "/testing" {
		t.Fatalf("Expected /testing got %s", name)
	}
	if _, err := GetFullContainerName(""); err == nil {
		t.Fatal("Error should not be nil")
	}
}

func TestValidContainerNames(t *testing.T) {
	invalidNames := []string{"-rm", "&sdfsfd", "safd%sd"}
	validNames := []string{"word-word", "word_word", "1weoid"}

	for _, name := range invalidNames {
		if validContainerNamePattern.MatchString(name) {
			t.Fatalf("%q is not a valid container name and was returned as valid.", name)
		}
	}

	for _, name := range validNames {
		if !validContainerNamePattern.MatchString(name) {
			t.Fatalf("%q is a valid container name and was returned as invalid.", name)
		}
	}
}

func TestContainerStopSignal(t *testing.T) {
	c := &Container{
		CommonContainer: CommonContainer{
			Config: &runconfig.Config{},
		},
	}

	def, err := signal.ParseSignal(signal.DefaultStopSignal)
	if err != nil {
		t.Fatal(err)
	}

	s := c.stopSignal()
	if s != int(def) {
		t.Fatalf("Expected %v, got %v", def, s)
	}

	c = &Container{
		CommonContainer: CommonContainer{
			Config: &runconfig.Config{StopSignal: "SIGKILL"},
		},
	}
	s = c.stopSignal()
	if s != 9 {
		t.Fatalf("Expected 9, got %v", s)
	}
}

func TestContainerInitDNS(t *testing.T) {
	tmp, err := ioutil.TempDir("", "docker-container-test-")
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(tmp)

	containerID := "d59df5276e7b219d510fe70565e0404bc06350e0d4b43fe961f22f339980170e"
	containerPath := filepath.Join(tmp, containerID)
	if err := os.MkdirAll(containerPath, 0755); err != nil {
		t.Fatal(err)
	}

	config := `{"State":{"Running":true,"Paused":false,"Restarting":false,"OOMKilled":false,"Dead":false,"Pid":2464,"ExitCode":0,
"Error":"","StartedAt":"2015-05-26T16:48:53.869308965Z","FinishedAt":"0001-01-01T00:00:00Z"},
"ID":"d59df5276e7b219d510fe70565e0404bc06350e0d4b43fe961f22f339980170e","Created":"2015-05-26T16:48:53.7987917Z","Path":"top",
"Args":[],"Config":{"Hostname":"d59df5276e7b","Domainname":"","User":"","Memory":0,"MemorySwap":0,"CpuShares":0,"Cpuset":"",
"AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"PortSpecs":null,"ExposedPorts":null,"Tty":true,"OpenStdin":true,
"StdinOnce":false,"Env":null,"Cmd":["top"],"Image":"ubuntu:latest","Volumes":null,"WorkingDir":"","Entrypoint":null,
"NetworkDisabled":false,"MacAddress":"","OnBuild":null,"Labels":{}},"Image":"07f8e8c5e66084bef8f848877857537ffe1c47edd01a93af27e7161672ad0e95",
"NetworkSettings":{"IPAddress":"172.17.0.1","IPPrefixLen":16,"MacAddress":"02:42:ac:11:00:01","LinkLocalIPv6Address":"fe80::42:acff:fe11:1",
"LinkLocalIPv6PrefixLen":64,"GlobalIPv6Address":"","GlobalIPv6PrefixLen":0,"Gateway":"172.17.42.1","IPv6Gateway":"","Bridge":"docker0","Ports":{}},
"ResolvConfPath":"/var/lib/docker/containers/d59df5276e7b219d510fe70565e0404bc06350e0d4b43fe961f22f339980170e/resolv.conf",
"HostnamePath":"/var/lib/docker/containers/d59df5276e7b219d510fe70565e0404bc06350e0d4b43fe961f22f339980170e/hostname",
"HostsPath":"/var/lib/docker/containers/d59df5276e7b219d510fe70565e0404bc06350e0d4b43fe961f22f339980170e/hosts",
"LogPath":"/var/lib/docker/containers/d59df5276e7b219d510fe70565e0404bc06350e0d4b43fe961f22f339980170e/d59df5276e7b219d510fe70565e0404bc06350e0d4b43fe961f22f339980170e-json.log",
"Name":"/ubuntu","Driver":"aufs","MountLabel":"","ProcessLabel":"","AppArmorProfile":"","RestartCount":0,
"UpdateDns":false,"Volumes":{},"VolumesRW":{},"AppliedVolumesFrom":null}`

	if err = ioutil.WriteFile(filepath.Join(containerPath, configFileName), []byte(config), 0644); err != nil {
		t.Fatal(err)
	}

	hostConfig := `{"Binds":[],"ContainerIDFile":"","Memory":0,"MemorySwap":0,"CpuShares":0,"CpusetCpus":"",
"Privileged":false,"PortBindings":{},"Links":null,"PublishAllPorts":false,"Dns":null,"DnsOptions":null,"DnsSearch":null,"ExtraHosts":null,"VolumesFrom":null,
"Devices":[],"NetworkMode":"bridge","IpcMode":"","PidMode":"","CapAdd":null,"CapDrop":null,"RestartPolicy":{"Name":"no","MaximumRetryCount":0},
"SecurityOpt":null,"ReadonlyRootfs":false,"Ulimits":null,"LogConfig":{"Type":"","Config":null},"CgroupParent":""}`
	if err = ioutil.WriteFile(filepath.Join(containerPath, "hostconfig.json"), []byte(hostConfig), 0644); err != nil {
		t.Fatal(err)
	}

	daemon, err := initDaemonWithVolumeStore(tmp)
	if err != nil {
		t.Fatal(err)
	}
	defer volumedrivers.Unregister(volume.DefaultDriverName)

	c, err := daemon.load(containerID)
	if err != nil {
		t.Fatal(err)
	}

	if c.hostConfig.DNS == nil {
		t.Fatal("Expected container DNS to not be nil")
	}

	if c.hostConfig.DNSSearch == nil {
		t.Fatal("Expected container DNSSearch to not be nil")
	}

	if c.hostConfig.DNSOptions == nil {
		t.Fatal("Expected container DNSOptions to not be nil")
	}
}