package command

import (
	"io"
	"strings"
	"testing"

	"github.com/hashicorp/vault/api"
	"github.com/mitchellh/cli"
)

func testWriteCommand(tb testing.TB) (*cli.MockUi, *WriteCommand) {
	tb.Helper()

	ui := cli.NewMockUi()
	return ui, &WriteCommand{
		BaseCommand: &BaseCommand{
			UI: ui,
		},
	}
}

func TestWriteCommand_Run(t *testing.T) {
	t.Parallel()

	cases := []struct {
		name string
		args []string
		out  string
		code int
	}{
		{
			"not_enough_args",
			[]string{},
			"Not enough arguments",
			1,
		},
		{
			"empty_kvs",
			[]string{"secret/write/foo"},
			"Must supply data or use -force",
			1,
		},
		{
			"force_kvs",
			[]string{"-force", "auth/token/create"},
			"token",
			0,
		},
		{
			"force_f_kvs",
			[]string{"-f", "auth/token/create"},
			"token",
			0,
		},
		{
			"kvs_no_value",
			[]string{"secret/write/foo", "foo"},
			"Failed to parse K=V data",
			1,
		},
		{
			"single_value",
			[]string{"secret/write/foo", "foo=bar"},
			"Success!",
			0,
		},
		{
			"multi_value",
			[]string{"secret/write/foo", "foo=bar", "zip=zap"},
			"Success!",
			0,
		},
		{
			"field",
			[]string{
				"-field", "token_renewable",
				"auth/token/create", "display_name=foo",
			},
			"false",
			0,
		},
		{
			"field_not_found",
			[]string{
				"-field", "not-a-real-field",
				"auth/token/create", "display_name=foo",
			},
			"not present in secret",
			1,
		},
	}

	for _, tc := range cases {
		tc := tc

		t.Run(tc.name, func(t *testing.T) {
			t.Parallel()

			client, closer := testVaultServer(t)
			defer closer()

			ui, cmd := testWriteCommand(t)
			cmd.client = client

			code := cmd.Run(tc.args)
			if code != tc.code {
				t.Errorf("expected %d to be %d", code, tc.code)
			}

			combined := ui.OutputWriter.String() + ui.ErrorWriter.String()
			if !strings.Contains(combined, tc.out) {
				t.Errorf("expected %q to contain %q", combined, tc.out)
			}
		})
	}

	t.Run("force", func(t *testing.T) {
		t.Parallel()

		client, closer := testVaultServer(t)
		defer closer()

		if err := client.Sys().Mount("transit/", &api.MountInput{
			Type: "transit",
		}); err != nil {
			t.Fatal(err)
		}

		ui, cmd := testWriteCommand(t)
		cmd.client = client

		code := cmd.Run([]string{
			"-force",
			"transit/keys/my-key",
		})
		if exp := 0; code != exp {
			t.Fatalf("expected %d to be %d: %q", code, exp, ui.ErrorWriter.String())
		}

		secret, err := client.Logical().Read("transit/keys/my-key")
		if err != nil {
			t.Fatal(err)
		}
		if secret == nil || secret.Data == nil {
			t.Fatal("expected secret to have data")
		}
	})

	t.Run("stdin_full", func(t *testing.T) {
		t.Parallel()

		client, closer := testVaultServer(t)
		defer closer()

		stdinR, stdinW := io.Pipe()
		go func() {
			stdinW.Write([]byte(`{"foo":"bar"}`))
			stdinW.Close()
		}()

		_, cmd := testWriteCommand(t)
		cmd.client = client
		cmd.testStdin = stdinR

		code := cmd.Run([]string{
			"secret/write/stdin_full", "-",
		})
		if code != 0 {
			t.Fatalf("expected 0 to be %d", code)
		}

		secret, err := client.Logical().Read("secret/write/stdin_full")
		if err != nil {
			t.Fatal(err)
		}
		if secret == nil || secret.Data == nil {
			t.Fatal("expected secret to have data")
		}
		if exp, act := "bar", secret.Data["foo"].(string); exp != act {
			t.Errorf("expected %q to be %q", act, exp)
		}
	})

	t.Run("stdin_value", func(t *testing.T) {
		t.Parallel()

		client, closer := testVaultServer(t)
		defer closer()

		stdinR, stdinW := io.Pipe()
		go func() {
			stdinW.Write([]byte("bar"))
			stdinW.Close()
		}()

		_, cmd := testWriteCommand(t)
		cmd.client = client
		cmd.testStdin = stdinR

		code := cmd.Run([]string{
			"secret/write/stdin_value", "foo=-",
		})
		if code != 0 {
			t.Fatalf("expected 0 to be %d", code)
		}

		secret, err := client.Logical().Read("secret/write/stdin_value")
		if err != nil {
			t.Fatal(err)
		}
		if secret == nil || secret.Data == nil {
			t.Fatal("expected secret to have data")
		}
		if exp, act := "bar", secret.Data["foo"].(string); exp != act {
			t.Errorf("expected %q to be %q", act, exp)
		}
	})

	t.Run("integration", func(t *testing.T) {
		t.Parallel()

		client, closer := testVaultServer(t)
		defer closer()

		_, cmd := testWriteCommand(t)
		cmd.client = client

		code := cmd.Run([]string{
			"secret/write/integration", "foo=bar", "zip=zap",
		})
		if code != 0 {
			t.Fatalf("expected 0 to be %d", code)
		}

		secret, err := client.Logical().Read("secret/write/integration")
		if err != nil {
			t.Fatal(err)
		}
		if secret == nil || secret.Data == nil {
			t.Fatal("expected secret to have data")
		}
		if exp, act := "bar", secret.Data["foo"].(string); exp != act {
			t.Errorf("expected %q to be %q", act, exp)
		}
		if exp, act := "zap", secret.Data["zip"].(string); exp != act {
			t.Errorf("expected %q to be %q", act, exp)
		}
	})

	t.Run("communication_failure", func(t *testing.T) {
		t.Parallel()

		client, closer := testVaultServerBad(t)
		defer closer()

		ui, cmd := testWriteCommand(t)
		cmd.client = client

		code := cmd.Run([]string{
			"foo/bar", "a=b",
		})
		if exp := 2; code != exp {
			t.Errorf("expected %d to be %d", code, exp)
		}

		expected := "Error writing data to foo/bar: "
		combined := ui.OutputWriter.String() + ui.ErrorWriter.String()
		if !strings.Contains(combined, expected) {
			t.Errorf("expected %q to contain %q", combined, expected)
		}
	})

	t.Run("no_tabs", func(t *testing.T) {
		t.Parallel()

		_, cmd := testWriteCommand(t)
		assertNoTabs(t, cmd)
	})
}