package authmethodcreate

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

	"github.com/hashicorp/consul/agent"
	"github.com/hashicorp/consul/agent/connect"
	"github.com/hashicorp/consul/command/acl"
	"github.com/hashicorp/consul/sdk/testutil"
	"github.com/hashicorp/consul/testrpc"
	"github.com/mitchellh/cli"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"

	// activate testing auth method
	_ "github.com/hashicorp/consul/agent/consul/authmethod/testauth"
)

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

	if strings.ContainsRune(New(cli.NewMockUi()).Help(), '\t') {
		t.Fatal("help has tabs")
	}
}

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

	testDir := testutil.TempDir(t, "acl")
	defer os.RemoveAll(testDir)

	a := agent.NewTestAgent(t, t.Name(), `
	primary_datacenter = "dc1"
	acl {
		enabled = true
		tokens {
			master = "root"
		}
	}`)

	defer a.Shutdown()
	testrpc.WaitForLeader(t, a.RPC, "dc1")

	t.Run("type required", func(t *testing.T) {
		args := []string{
			"-http-addr=" + a.HTTPAddr(),
			"-token=root",
		}

		ui := cli.NewMockUi()
		cmd := New(ui)

		code := cmd.Run(args)
		require.Equal(t, code, 1)
		require.Contains(t, ui.ErrorWriter.String(), "Missing required '-type' flag")
	})

	t.Run("name required", func(t *testing.T) {
		args := []string{
			"-http-addr=" + a.HTTPAddr(),
			"-token=root",
			"-type=testing",
		}

		ui := cli.NewMockUi()
		cmd := New(ui)

		code := cmd.Run(args)
		require.Equal(t, code, 1)
		require.Contains(t, ui.ErrorWriter.String(), "Missing required '-name' flag")
	})

	t.Run("invalid type", func(t *testing.T) {
		args := []string{
			"-http-addr=" + a.HTTPAddr(),
			"-token=root",
			"-type=invalid",
			"-name=my-method",
		}

		ui := cli.NewMockUi()
		cmd := New(ui)

		code := cmd.Run(args)
		require.Equal(t, code, 1)
		require.Contains(t, ui.ErrorWriter.String(), "Invalid Auth Method: Type should be one of")
	})

	t.Run("create testing", func(t *testing.T) {
		args := []string{
			"-http-addr=" + a.HTTPAddr(),
			"-token=root",
			"-type=testing",
			"-name=test",
		}

		ui := cli.NewMockUi()
		cmd := New(ui)

		code := cmd.Run(args)
		require.Equal(t, code, 0)
		require.Empty(t, ui.ErrorWriter.String())
	})
}

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

	testDir := testutil.TempDir(t, "acl")
	defer os.RemoveAll(testDir)

	a := agent.NewTestAgent(t, t.Name(), `
	primary_datacenter = "dc1"
	acl {
		enabled = true
		tokens {
			master = "root"
		}
	}`)

	defer a.Shutdown()
	testrpc.WaitForLeader(t, a.RPC, "dc1")

	t.Run("type required", func(t *testing.T) {
		args := []string{
			"-http-addr=" + a.HTTPAddr(),
			"-token=root",
			"-format=json",
		}

		ui := cli.NewMockUi()
		cmd := New(ui)

		code := cmd.Run(args)
		require.Equal(t, code, 1)
		require.Contains(t, ui.ErrorWriter.String(), "Missing required '-type' flag")
	})

	t.Run("create testing", func(t *testing.T) {
		args := []string{
			"-http-addr=" + a.HTTPAddr(),
			"-token=root",
			"-type=testing",
			"-name=test",
			"-format=json",
		}

		ui := cli.NewMockUi()
		cmd := New(ui)

		code := cmd.Run(args)
		out := ui.OutputWriter.String()

		require.Equal(t, code, 0)
		require.Empty(t, ui.ErrorWriter.String())
		require.Contains(t, out, "test")

		var jsonOutput json.RawMessage
		err := json.Unmarshal([]byte(out), &jsonOutput)
		assert.NoError(t, err)
	})
}

func TestAuthMethodCreateCommand_k8s(t *testing.T) {
	t.Parallel()

	testDir := testutil.TempDir(t, "acl")
	defer os.RemoveAll(testDir)

	a := agent.NewTestAgent(t, t.Name(), `
	primary_datacenter = "dc1"
	acl {
		enabled = true
		tokens {
			master = "root"
		}
	}`)

	defer a.Shutdown()
	testrpc.WaitForLeader(t, a.RPC, "dc1")

	t.Run("k8s host required", func(t *testing.T) {
		args := []string{
			"-http-addr=" + a.HTTPAddr(),
			"-token=root",
			"-type=kubernetes",
			"-name=k8s",
		}

		ui := cli.NewMockUi()
		cmd := New(ui)

		code := cmd.Run(args)
		require.Equal(t, code, 1)
		require.Contains(t, ui.ErrorWriter.String(), "Missing required '-kubernetes-host' flag")
	})

	t.Run("k8s ca cert required", func(t *testing.T) {
		args := []string{
			"-http-addr=" + a.HTTPAddr(),
			"-token=root",
			"-type=kubernetes",
			"-name=k8s",
			"-kubernetes-host=https://foo.internal:8443",
		}

		ui := cli.NewMockUi()
		cmd := New(ui)

		code := cmd.Run(args)
		require.Equal(t, code, 1)
		require.Contains(t, ui.ErrorWriter.String(), "Missing required '-kubernetes-ca-cert' flag")
	})

	ca := connect.TestCA(t, nil)

	t.Run("k8s jwt required", func(t *testing.T) {
		args := []string{
			"-http-addr=" + a.HTTPAddr(),
			"-token=root",
			"-type=kubernetes",
			"-name=k8s",
			"-kubernetes-host=https://foo.internal:8443",
			"-kubernetes-ca-cert", ca.RootCert,
		}

		ui := cli.NewMockUi()
		cmd := New(ui)

		code := cmd.Run(args)
		require.Equal(t, code, 1)
		require.Contains(t, ui.ErrorWriter.String(), "Missing required '-kubernetes-service-account-jwt' flag")
	})

	t.Run("create k8s", func(t *testing.T) {
		args := []string{
			"-http-addr=" + a.HTTPAddr(),
			"-token=root",
			"-type=kubernetes",
			"-name=k8s",
			"-kubernetes-host", "https://foo.internal:8443",
			"-kubernetes-ca-cert", ca.RootCert,
			"-kubernetes-service-account-jwt", acl.TestKubernetesJWT_A,
		}

		ui := cli.NewMockUi()
		cmd := New(ui)

		code := cmd.Run(args)
		require.Equal(t, code, 0)
		require.Empty(t, ui.ErrorWriter.String())
	})

	caFile := filepath.Join(testDir, "ca.crt")
	require.NoError(t, ioutil.WriteFile(caFile, []byte(ca.RootCert), 0600))

	t.Run("create k8s with cert file", func(t *testing.T) {
		args := []string{
			"-http-addr=" + a.HTTPAddr(),
			"-token=root",
			"-type=kubernetes",
			"-name=k8s",
			"-kubernetes-host", "https://foo.internal:8443",
			"-kubernetes-ca-cert", "@" + caFile,
			"-kubernetes-service-account-jwt", acl.TestKubernetesJWT_A,
		}

		ui := cli.NewMockUi()
		cmd := New(ui)

		code := cmd.Run(args)
		require.Equal(t, code, 0)
		require.Empty(t, ui.ErrorWriter.String())
	})
}
