package command

import (
	"strings"
	"testing"

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

func TestStateShow(t *testing.T) {
	state := &terraform.State{
		Modules: []*terraform.ModuleState{
			&terraform.ModuleState{
				Path: []string{"root"},
				Resources: map[string]*terraform.ResourceState{
					"test_instance.foo": &terraform.ResourceState{
						Type: "test_instance",
						Primary: &terraform.InstanceState{
							ID: "bar",
							Attributes: map[string]string{
								"foo": "value",
								"bar": "value",
							},
						},
					},
				},
			},
		},
	}

	statePath := testStateFile(t, state)

	p := testProvider()
	ui := new(cli.MockUi)
	c := &StateShowCommand{
		Meta: Meta{
			ContextOpts: testCtxConfig(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 := &terraform.State{
		Modules: []*terraform.ModuleState{
			&terraform.ModuleState{
				Path: []string{"root"},
				Resources: map[string]*terraform.ResourceState{
					"test_instance.foo.0": &terraform.ResourceState{
						Type: "test_instance",
						Primary: &terraform.InstanceState{
							ID: "bar",
							Attributes: map[string]string{
								"foo": "value",
								"bar": "value",
							},
						},
					},
					"test_instance.foo.1": &terraform.ResourceState{
						Type: "test_instance",
						Primary: &terraform.InstanceState{
							ID: "bar",
							Attributes: map[string]string{
								"foo": "value",
								"bar": "value",
							},
						},
					},
				},
			},
		},
	}

	statePath := testStateFile(t, state)

	p := testProvider()
	ui := new(cli.MockUi)
	c := &StateShowCommand{
		Meta: Meta{
			ContextOpts: testCtxConfig(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{
			ContextOpts: testCtxConfig(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 := terraform.NewState()

	statePath := testStateFile(t, state)

	p := testProvider()
	ui := new(cli.MockUi)
	c := &StateShowCommand{
		Meta: Meta{
			ContextOpts: testCtxConfig(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())
	}
}

func TestStateShow_emptyStateWithModule(t *testing.T) {
	// empty state with empty module
	state := terraform.NewState()

	mod := &terraform.ModuleState{
		Path: []string{"root", "mod"},
	}
	state.Modules = append(state.Modules, mod)

	statePath := testStateFile(t, state)

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

	args := []string{
		"-state", statePath,
	}
	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
`