package command

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

	"github.com/hashicorp/terraform/config/module"
	"github.com/hashicorp/terraform/terraform"
	"github.com/mitchellh/cli"
)

func TestShow(t *testing.T) {
	ui := new(cli.MockUi)
	c := &ShowCommand{
		Meta: Meta{
			testingOverrides: metaOverridesForProvider(testProvider()),
			Ui:               ui,
		},
	}

	args := []string{
		"bad",
		"bad",
	}
	if code := c.Run(args); code != 1 {
		t.Fatalf("bad: \n%s", ui.OutputWriter.String())
	}
}

func TestShow_noArgs(t *testing.T) {
	// Create the default state
	td, err := ioutil.TempDir("", "tf")
	if err != nil {
		t.Fatalf("err: %s", err)
	}
	statePath := filepath.Join(td, DefaultStateFilename)

	f, err := os.Create(statePath)
	if err != nil {
		t.Fatalf("err: %s", err)
	}
	err = terraform.WriteState(testState(), f)
	f.Close()
	if err != nil {
		t.Fatalf("err: %s", err)
	}

	// Change to the temporary directory
	cwd, err := os.Getwd()
	if err != nil {
		t.Fatalf("err: %s", err)
	}
	if err := os.Chdir(filepath.Dir(statePath)); err != nil {
		t.Fatalf("err: %s", err)
	}
	defer os.Chdir(cwd)

	ui := new(cli.MockUi)
	c := &ShowCommand{
		Meta: Meta{
			testingOverrides: metaOverridesForProvider(testProvider()),
			Ui:               ui,
		},
	}

	args := []string{}
	if code := c.Run(args); code != 0 {
		t.Fatalf("bad: \n%s", ui.OutputWriter.String())
	}
}

func TestShow_noArgsNoState(t *testing.T) {
	// Create the default state
	td, err := ioutil.TempDir("", "tf")
	if err != nil {
		t.Fatalf("err: %s", err)
	}
	statePath := filepath.Join(td, DefaultStateFilename)

	// Change to the temporary directory
	cwd, err := os.Getwd()
	if err != nil {
		t.Fatalf("err: %s", err)
	}
	if err := os.Chdir(filepath.Dir(statePath)); err != nil {
		t.Fatalf("err: %s", err)
	}
	defer os.Chdir(cwd)

	ui := new(cli.MockUi)
	c := &ShowCommand{
		Meta: Meta{
			testingOverrides: metaOverridesForProvider(testProvider()),
			Ui:               ui,
		},
	}

	args := []string{}
	if code := c.Run(args); code != 0 {
		t.Fatalf("bad: \n%s", ui.OutputWriter.String())
	}
}

func TestShow_plan(t *testing.T) {
	planPath := testPlanFile(t, &terraform.Plan{
		Module: new(module.Tree),
	})

	ui := new(cli.MockUi)
	c := &ShowCommand{
		Meta: Meta{
			testingOverrides: metaOverridesForProvider(testProvider()),
			Ui:               ui,
		},
	}

	args := []string{
		planPath,
	}
	if code := c.Run(args); code != 0 {
		t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
	}
}

func TestShow_noArgsRemoteState(t *testing.T) {
	tmp, cwd := testCwd(t)
	defer testFixCwd(t, tmp, cwd)

	// Create some legacy remote state
	legacyState := testState()
	_, srv := testRemoteState(t, legacyState, 200)
	defer srv.Close()
	testStateFileRemote(t, legacyState)

	ui := new(cli.MockUi)
	c := &ShowCommand{
		Meta: Meta{
			testingOverrides: metaOverridesForProvider(testProvider()),
			Ui:               ui,
		},
	}

	args := []string{}
	if code := c.Run(args); code != 0 {
		t.Fatalf("bad: \n%s", ui.OutputWriter.String())
	}

	expected := "test_instance.foo"
	actual := ui.OutputWriter.String()
	if !strings.Contains(actual, expected) {
		t.Fatalf("expected:\n%s\n\nto include: %q", actual, expected)
	}
}

func TestShow_state(t *testing.T) {
	originalState := testState()
	statePath := testStateFile(t, originalState)

	ui := new(cli.MockUi)
	c := &ShowCommand{
		Meta: Meta{
			testingOverrides: metaOverridesForProvider(testProvider()),
			Ui:               ui,
		},
	}

	args := []string{
		statePath,
	}
	if code := c.Run(args); code != 0 {
		t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
	}
}