package command

import (
	"strings"
	"testing"

	"github.com/mitchellh/cli"

	"github.com/hashicorp/terraform/addrs"
	"github.com/hashicorp/terraform/states"
)

func TestStateShow(t *testing.T) {
	state := states.BuildState(func(s *states.SyncState) {
		s.SetResourceInstanceCurrent(
			addrs.Resource{
				Mode: addrs.ManagedResourceMode,
				Type: "test_instance",
				Name: "foo",
			}.Instance(addrs.NoKey).Absolute(addrs.RootModuleInstance),
			&states.ResourceInstanceObjectSrc{
				AttrsJSON: []byte(`{"id":"bar","foo":"value","bar":"value"}`),
				Status:    states.ObjectReady,
			},
			addrs.ProviderConfig{Type: "test"}.Absolute(addrs.RootModuleInstance),
		)
	})
	statePath := testStateFile(t, state)

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

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

	// Test that outputs were displayed
	expected := strings.TrimSpace(testStateShowOutput) + "\n"
	actual := ui.OutputWriter.String()
	if actual != expected {
		t.Fatalf("Expected:\n%q\n\nTo equal: %q", actual, expected)
	}
}

func TestStateShow_multi(t *testing.T) {
	state := states.BuildState(func(s *states.SyncState) {
		s.SetResourceInstanceCurrent(
			addrs.Resource{
				Mode: addrs.ManagedResourceMode,
				Type: "test_instance",
				Name: "foo",
			}.Instance(addrs.NoKey).Absolute(addrs.RootModuleInstance),
			&states.ResourceInstanceObjectSrc{
				AttrsJSON: []byte(`{"id":"bar","foo":"value","bar":"value"}`),
				Status:    states.ObjectReady,
			},
			addrs.ProviderConfig{Type: "test"}.Absolute(addrs.RootModuleInstance),
		)
		s.SetResourceInstanceCurrent(
			addrs.Resource{
				Mode: addrs.ManagedResourceMode,
				Type: "test_instance",
				Name: "bar",
			}.Instance(addrs.NoKey).Absolute(addrs.RootModuleInstance),
			&states.ResourceInstanceObjectSrc{
				AttrsJSON: []byte(`{"id":"foo","foo":"value","bar":"value"}`),
				Status:    states.ObjectReady,
			},
			addrs.ProviderConfig{Type: "test"}.Absolute(addrs.RootModuleInstance),
		)
	})
	statePath := testStateFile(t, state)

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

	args := []string{
		"-state", statePath,
		"test_instance.foo",
	}
	if code := c.Run(args); code != 1 {
		t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
	}
}

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

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

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

func TestStateShow_emptyState(t *testing.T) {
	state := states.NewState()
	statePath := testStateFile(t, state)

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

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

const testStateShowOutput = `
id  = bar
bar = value
foo = value
`