package backup

import (
	"fmt"
	"testing"

	"github.com/alcionai/clues"
	"github.com/spf13/cobra"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	"github.com/stretchr/testify/suite"

	"github.com/alcionai/corso/src/cli/flags"
	"github.com/alcionai/corso/src/cli/utils/testdata"
	"github.com/alcionai/corso/src/internal/tester"
	"github.com/alcionai/corso/src/internal/version"
	dtd "github.com/alcionai/corso/src/pkg/backup/details/testdata"
)

type ExchangeUnitSuite struct {
	tester.Suite
}

func TestExchangeUnitSuite(t *testing.T) {
	suite.Run(t, &ExchangeUnitSuite{Suite: tester.NewUnitSuite(t)})
}

func (suite *ExchangeUnitSuite) TestAddExchangeCommands() {
	expectUse := exchangeServiceCommand

	table := []struct {
		name        string
		use         string
		expectUse   string
		expectShort string
		flags       []string
		expectRunE  func(*cobra.Command, []string) error
	}{
		{
			name:        "create exchange",
			use:         createCommand,
			expectUse:   expectUse + " " + exchangeServiceCommandCreateUseSuffix,
			expectShort: exchangeCreateCmd().Short,
			flags: []string{
				flags.UserFN,
				flags.CategoryDataFN,
				flags.DisableIncrementalsFN,
				flags.DisableDeltaFN,
				flags.FailFastFN,
				flags.FetchParallelismFN,
				flags.SkipReduceFN,
				flags.NoStatsFN,
				flags.DeltaPageSizeFN,
			},
			expectRunE: createExchangeCmd,
		},
		{
			name:        "list exchange",
			use:         listCommand,
			expectUse:   expectUse,
			expectShort: exchangeListCmd().Short,
			flags: []string{
				flags.BackupFN,
				flags.FailedItemsFN,
				flags.SkippedItemsFN,
				flags.RecoveredErrorsFN,
			},
			expectRunE: listExchangeCmd,
		},
		{
			name:        "details exchange",
			use:         detailsCommand,
			expectUse:   expectUse + " " + exchangeServiceCommandDetailsUseSuffix,
			expectShort: exchangeDetailsCmd().Short,
			flags: []string{
				flags.BackupFN,
				flags.ContactFN,
				flags.ContactFolderFN,
				flags.ContactNameFN,
				flags.EmailFN,
				flags.EmailFolderFN,
				flags.EmailReceivedAfterFN,
				flags.EmailReceivedBeforeFN,
				flags.EmailSenderFN,
				flags.EmailSubjectFN,
				flags.EventFN,
				flags.EventCalendarFN,
				flags.EventOrganizerFN,
				flags.EventRecursFN,
				flags.EventStartsAfterFN,
				flags.EventStartsBeforeFN,
				flags.EventSubjectFN,
			},
			expectRunE: detailsExchangeCmd,
		},
		{
			"delete exchange",
			deleteCommand,
			expectUse + " " + exchangeServiceCommandDeleteUseSuffix,
			exchangeDeleteCmd().Short,
			[]string{flags.BackupFN},
			deleteExchangeCmd,
		},
	}
	for _, test := range table {
		suite.Run(test.name, func() {
			t := suite.T()

			cmd := &cobra.Command{Use: test.use}

			c := addExchangeCommands(cmd)
			require.NotNil(t, c)

			cmds := cmd.Commands()
			require.Len(t, cmds, 1)

			child := cmds[0]
			assert.Equal(t, test.expectUse, child.Use)
			assert.Equal(t, test.expectShort, child.Short)
			tester.AreSameFunc(t, test.expectRunE, child.RunE)
		})
	}
}

func (suite *ExchangeUnitSuite) TestValidateBackupCreateFlags() {
	table := []struct {
		name       string
		user, data []string
		expect     assert.ErrorAssertionFunc
	}{
		{
			name:   "no users or data",
			expect: assert.Error,
		},
		{
			name:   "no users only data",
			data:   []string{dataEmail},
			expect: assert.Error,
		},
		{
			name:   "unrecognized data category",
			user:   []string{"fnord"},
			data:   []string{"smurfs"},
			expect: assert.Error,
		},
		{
			name:   "only users no data",
			user:   []string{"fnord"},
			expect: assert.NoError,
		},
	}
	for _, test := range table {
		suite.Run(test.name, func() {
			t := suite.T()

			err := validateExchangeBackupCreateFlags(test.user, test.data)
			test.expect(t, err, clues.ToCore(err))
		})
	}
}

func (suite *ExchangeUnitSuite) TestExchangeBackupCreateSelectors() {
	table := []struct {
		name             string
		user, data       []string
		expectIncludeLen int
	}{
		{
			name:             "default: one of each category, all None() matchers",
			expectIncludeLen: 3,
		},
		{
			name:             "any users, no data",
			user:             []string{flags.Wildcard},
			expectIncludeLen: 3,
		},
		{
			name:             "single user, no data",
			user:             []string{"u1"},
			expectIncludeLen: 3,
		},
		{
			name:             "any users, contacts",
			user:             []string{flags.Wildcard},
			data:             []string{dataContacts},
			expectIncludeLen: 1,
		},
		{
			name:             "single user, contacts",
			user:             []string{"u1"},
			data:             []string{dataContacts},
			expectIncludeLen: 1,
		},
		{
			name:             "any users, email",
			user:             []string{flags.Wildcard},
			data:             []string{dataEmail},
			expectIncludeLen: 1,
		},
		{
			name:             "single user, email",
			user:             []string{"u1"},
			data:             []string{dataEmail},
			expectIncludeLen: 1,
		},
		{
			name:             "any users, events",
			user:             []string{flags.Wildcard},
			data:             []string{dataEvents},
			expectIncludeLen: 1,
		},
		{
			name:             "single user, events",
			user:             []string{"u1"},
			data:             []string{dataEvents},
			expectIncludeLen: 1,
		},
		{
			name:             "any users, contacts + email",
			user:             []string{flags.Wildcard},
			data:             []string{dataContacts, dataEmail},
			expectIncludeLen: 2,
		},
		{
			name:             "single user, contacts + email",
			user:             []string{"u1"},
			data:             []string{dataContacts, dataEmail},
			expectIncludeLen: 2,
		},
		{
			name:             "any users, email + events",
			user:             []string{flags.Wildcard},
			data:             []string{dataEmail, dataEvents},
			expectIncludeLen: 2,
		},
		{
			name:             "single user, email + events",
			user:             []string{"u1"},
			data:             []string{dataEmail, dataEvents},
			expectIncludeLen: 2,
		},
		{
			name:             "any users, events + contacts",
			user:             []string{flags.Wildcard},
			data:             []string{dataEvents, dataContacts},
			expectIncludeLen: 2,
		},
		{
			name:             "single user, events + contacts",
			user:             []string{"u1"},
			data:             []string{dataEvents, dataContacts},
			expectIncludeLen: 2,
		},
		{
			name:             "many users, events",
			user:             []string{"fnord", "smarf"},
			data:             []string{dataEvents},
			expectIncludeLen: 1,
		},
		{
			name:             "many users, events + contacts",
			user:             []string{"fnord", "smarf"},
			data:             []string{dataEvents, dataContacts},
			expectIncludeLen: 2,
		},
	}
	for _, test := range table {
		suite.Run(test.name, func() {
			t := suite.T()

			sel := exchangeBackupCreateSelectors(test.user, test.data)
			assert.Equal(t, test.expectIncludeLen, len(sel.Includes))
		})
	}
}

func (suite *ExchangeUnitSuite) TestExchangeBackupDetailsSelectors() {
	for v := 0; v <= version.Backup; v++ {
		suite.Run(fmt.Sprintf("version%d", v), func() {
			for _, test := range testdata.ExchangeOptionDetailLookups {
				suite.Run(test.Name, func() {
					t := suite.T()

					ctx, flush := tester.NewContext(t)
					defer flush()

					bg := testdata.VersionedBackupGetter{
						Details: dtd.GetDetailsSetForVersion(t, v),
					}

					output, err := runDetailsExchangeCmd(
						ctx,
						bg,
						"backup-ID",
						test.Opts(t, v),
						false)
					assert.NoError(t, err, clues.ToCore(err))
					assert.ElementsMatch(t, test.Expected(t, v), output.Entries)
				})
			}
		})
	}
}

func (suite *ExchangeUnitSuite) TestExchangeBackupDetailsSelectorsBadFormats() {
	for _, test := range testdata.BadExchangeOptionsFormats {
		suite.Run(test.Name, func() {
			t := suite.T()

			ctx, flush := tester.NewContext(t)
			defer flush()

			output, err := runDetailsExchangeCmd(
				ctx,
				test.BackupGetter,
				"backup-ID",
				test.Opts(t, version.Backup),
				false)
			assert.Error(t, err, clues.ToCore(err))
			assert.Empty(t, output)
		})
	}
}