// Copyright (c) Mainflux
// SPDX-License-Identifier: Apache-2.0

package sdk_test

import (
	"fmt"
	"net/http"
	"net/http/httptest"
	"testing"
	"time"

	"github.com/go-chi/chi/v5"
	authmocks "github.com/mainflux/mainflux/auth/mocks"
	"github.com/mainflux/mainflux/internal/apiutil"
	"github.com/mainflux/mainflux/internal/groups"
	gmocks "github.com/mainflux/mainflux/internal/groups/mocks"
	"github.com/mainflux/mainflux/internal/testsutil"
	mflog "github.com/mainflux/mainflux/logger"
	mfclients "github.com/mainflux/mainflux/pkg/clients"
	"github.com/mainflux/mainflux/pkg/errors"
	sdk "github.com/mainflux/mainflux/pkg/sdk/go"
	"github.com/mainflux/mainflux/things"
	api "github.com/mainflux/mainflux/things/api/http"
	"github.com/mainflux/mainflux/things/mocks"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/mock"
)

var (
	adminToken = "token"
	userToken  = "userToken"
)

func newThingsServer() (*httptest.Server, *mocks.Repository, *gmocks.Repository, *authmocks.Service) {
	cRepo := new(mocks.Repository)
	gRepo := new(gmocks.Repository)
	thingCache := mocks.NewCache()

	auth := new(authmocks.Service)
	csvc := things.NewService(auth, cRepo, gRepo, thingCache, idProvider)
	gsvc := groups.NewService(gRepo, idProvider, auth)

	logger := mflog.NewMock()
	mux := chi.NewRouter()
	api.MakeHandler(csvc, gsvc, mux, logger, "")

	return httptest.NewServer(mux), cRepo, gRepo, auth
}

func TestCreateThing(t *testing.T) {
	ts, cRepo, _, _ := newClientServer()
	defer ts.Close()

	thing := sdk.Thing{
		Name:   "test",
		Status: mfclients.EnabledStatus.String(),
	}
	conf := sdk.Config{
		ThingsURL: ts.URL,
	}
	mfsdk := sdk.NewSDK(conf)

	cases := []struct {
		desc     string
		client   sdk.Thing
		response sdk.Thing
		token    string
		repoErr  error
		err      errors.SDKError
	}{
		{
			desc:     "register new thing",
			client:   thing,
			response: thing,
			token:    token,
			repoErr:  nil,
			err:      nil,
		},
		{
			desc:     "register existing thing",
			client:   thing,
			response: sdk.Thing{},
			token:    token,
			repoErr:  sdk.ErrFailedCreation,
			err:      errors.NewSDKErrorWithStatus(sdk.ErrFailedCreation, http.StatusInternalServerError),
		},
		{
			desc:     "register empty thing",
			client:   sdk.Thing{},
			response: sdk.Thing{},
			token:    token,
			repoErr:  errors.ErrMalformedEntity,
			err:      errors.NewSDKErrorWithStatus(errors.ErrMalformedEntity, http.StatusBadRequest),
		},
		{
			desc: "register a thing that can't be marshalled",
			client: sdk.Thing{
				Name: "test",
				Metadata: map[string]interface{}{
					"test": make(chan int),
				},
			},
			response: sdk.Thing{},
			token:    token,
			err:      errors.NewSDKError(fmt.Errorf("json: unsupported type: chan int")),
			repoErr:  errors.NewSDKError(fmt.Errorf("json: unsupported type: chan int")),
		},
		{
			desc: "register thing with empty secret",
			client: sdk.Thing{
				Name: "emptysecret",
				Credentials: sdk.Credentials{
					Secret: "",
				},
			},
			response: sdk.Thing{
				Name: "emptysecret",
				Credentials: sdk.Credentials{
					Secret: "",
				},
			},
			token:   token,
			err:     nil,
			repoErr: nil,
		},
		{
			desc: "register thing with empty identity",
			client: sdk.Thing{
				Credentials: sdk.Credentials{
					Identity: "",
					Secret:   secret,
				},
			},
			response: sdk.Thing{
				Credentials: sdk.Credentials{
					Identity: "",
					Secret:   secret,
				},
			},
			token:   token,
			repoErr: nil,
			err:     nil,
		},
		{
			desc: "register thing with every field defined",
			client: sdk.Thing{
				ID:          id,
				Name:        "name",
				Tags:        []string{"tag1", "tag2"},
				Owner:       id,
				Credentials: user.Credentials,
				Metadata:    validMetadata,
				CreatedAt:   time.Now(),
				UpdatedAt:   time.Now(),
				Status:      mfclients.EnabledStatus.String(),
			},
			response: sdk.Thing{
				ID:          id,
				Name:        "name",
				Tags:        []string{"tag1", "tag2"},
				Owner:       id,
				Credentials: user.Credentials,
				Metadata:    validMetadata,
				CreatedAt:   time.Now(),
				UpdatedAt:   time.Now(),
				Status:      mfclients.EnabledStatus.String(),
			},
			token:   token,
			repoErr: nil,
			err:     nil,
		},
	}
	for _, tc := range cases {
		repoCall := cRepo.On("Save", mock.Anything, mock.Anything).Return(tc.response, tc.repoErr)
		rThing, err := mfsdk.CreateThing(tc.client, tc.token)

		tc.response.ID = rThing.ID
		tc.response.Owner = rThing.Owner
		tc.response.CreatedAt = rThing.CreatedAt
		tc.response.UpdatedAt = rThing.UpdatedAt
		rThing.Credentials.Secret = tc.response.Credentials.Secret
		rThing.Status = tc.response.Status
		assert.Equal(t, tc.err, err, fmt.Sprintf("%s: expected error %s, got %s", tc.desc, tc.err, err))
		assert.Equal(t, tc.response, rThing, fmt.Sprintf("%s: expected %v got %v\n", tc.desc, tc.response, rThing))
		if tc.err == nil {
			ok := repoCall.Parent.AssertCalled(t, "Save", mock.Anything, mock.Anything)
			assert.True(t, ok, fmt.Sprintf("Save was not called on %s", tc.desc))
		}
		repoCall.Unset()
	}
}

func TestCreateThings(t *testing.T) {
	ts, cRepo, _, _ := newClientServer()
	defer ts.Close()

	things := []sdk.Thing{
		{
			Name:   "test",
			Status: mfclients.EnabledStatus.String(),
		},
		{
			Name:   "test2",
			Status: mfclients.EnabledStatus.String(),
		},
	}
	conf := sdk.Config{
		ThingsURL: ts.URL,
	}
	mfsdk := sdk.NewSDK(conf)

	cases := []struct {
		desc     string
		things   []sdk.Thing
		response []sdk.Thing
		token    string
		err      errors.SDKError
	}{
		{
			desc:     "register new things",
			things:   things,
			response: things,
			token:    token,
			err:      nil,
		},
		{
			desc:     "register existing things",
			things:   things,
			response: []sdk.Thing{},
			token:    token,
			err:      errors.NewSDKErrorWithStatus(errors.Wrap(apiutil.ErrValidation, sdk.ErrFailedCreation), http.StatusInternalServerError),
		},
		{
			desc:     "register empty things",
			things:   []sdk.Thing{},
			response: []sdk.Thing{},
			token:    token,
			err:      errors.NewSDKErrorWithStatus(errors.Wrap(apiutil.ErrValidation, apiutil.ErrEmptyList), http.StatusBadRequest),
		},
		{
			desc: "register things that can't be marshalled",
			things: []sdk.Thing{
				{
					Name: "test",
					Metadata: map[string]interface{}{
						"test": make(chan int),
					},
				},
			},
			response: []sdk.Thing{},
			token:    token,
			err:      errors.NewSDKError(fmt.Errorf("json: unsupported type: chan int")),
		},
	}
	for _, tc := range cases {
		repoCall := cRepo.On("Save", mock.Anything, mock.Anything).Return(tc.response, tc.err)
		rThing, err := mfsdk.CreateThings(tc.things, tc.token)
		for i, t := range rThing {
			tc.response[i].ID = t.ID
			tc.response[i].Owner = t.Owner
			tc.response[i].CreatedAt = t.CreatedAt
			tc.response[i].UpdatedAt = t.UpdatedAt
			tc.response[i].Credentials.Secret = t.Credentials.Secret
			t.Status = tc.response[i].Status
		}
		assert.Equal(t, tc.err, err, fmt.Sprintf("%s: expected error %s, got %s", tc.desc, tc.err, err))
		assert.Equal(t, tc.response, rThing, fmt.Sprintf("%s: expected %v got %v\n", tc.desc, tc.response, rThing))
		if tc.err == nil {
			ok := repoCall.Parent.AssertCalled(t, "Save", mock.Anything, mock.Anything)
			assert.True(t, ok, fmt.Sprintf("Save was not called on %s", tc.desc))
		}
		repoCall.Unset()
	}
}

func TestListThings(t *testing.T) {
	ts, cRepo, _, _ := newClientServer()
	defer ts.Close()

	var ths []sdk.Thing
	conf := sdk.Config{
		ThingsURL: ts.URL,
	}
	mfsdk := sdk.NewSDK(conf)

	owner := generateUUID(t)
	for i := 10; i < 100; i++ {
		th := sdk.Thing{
			ID:   generateUUID(t),
			Name: fmt.Sprintf("thing_%d", i),
			Credentials: sdk.Credentials{
				Identity: fmt.Sprintf("identity_%d", i),
				Secret:   generateUUID(t),
			},
			Metadata: sdk.Metadata{"name": fmt.Sprintf("thing_%d", i)},
			Status:   mfclients.EnabledStatus.String(),
		}
		if i == 50 {
			th.Owner = owner
			th.Status = mfclients.DisabledStatus.String()
			th.Tags = []string{"tag1", "tag2"}
		}
		ths = append(ths, th)
	}

	cases := []struct {
		desc       string
		token      string
		status     string
		total      uint64
		offset     uint64
		limit      uint64
		name       string
		identifier string
		ownerID    string
		tag        string
		metadata   sdk.Metadata
		err        errors.SDKError
		response   []sdk.Thing
	}{
		{
			desc:     "get a list of things",
			token:    token,
			limit:    limit,
			offset:   offset,
			total:    total,
			err:      nil,
			response: ths[offset:limit],
		},
		{
			desc:     "get a list of things with invalid token",
			token:    invalidToken,
			offset:   offset,
			limit:    limit,
			err:      errors.NewSDKErrorWithStatus(errors.Wrap(apiutil.ErrValidation, sdk.ErrFailedList), http.StatusInternalServerError),
			response: nil,
		},
		{
			desc:     "get a list of things with empty token",
			token:    "",
			offset:   offset,
			limit:    limit,
			err:      errors.NewSDKErrorWithStatus(errors.Wrap(apiutil.ErrValidation, sdk.ErrFailedList), http.StatusInternalServerError),
			response: nil,
		},
		{
			desc:     "get a list of things with zero limit",
			token:    token,
			offset:   offset,
			limit:    0,
			err:      errors.NewSDKErrorWithStatus(errors.Wrap(apiutil.ErrValidation, apiutil.ErrLimitSize), http.StatusInternalServerError),
			response: nil,
		},
		{
			desc:     "get a list of things with limit greater than max",
			token:    token,
			offset:   offset,
			limit:    110,
			err:      errors.NewSDKErrorWithStatus(errors.Wrap(apiutil.ErrValidation, apiutil.ErrLimitSize), http.StatusInternalServerError),
			response: []sdk.Thing(nil),
		},
		{
			desc:       "get a list of things with same identity",
			token:      token,
			offset:     0,
			limit:      1,
			err:        nil,
			identifier: Identity,
			metadata:   sdk.Metadata{},
			response:   []sdk.Thing{ths[89]},
		},
		{
			desc:       "get a list of things with same identity and metadata",
			token:      token,
			offset:     0,
			limit:      1,
			err:        nil,
			identifier: Identity,
			metadata: sdk.Metadata{
				"name": "client99",
			},
			response: []sdk.Thing{ths[89]},
		},
		{
			desc:   "list things with given metadata",
			token:  adminToken,
			offset: 0,
			limit:  1,
			metadata: sdk.Metadata{
				"name": "client99",
			},
			response: []sdk.Thing{ths[89]},
			err:      nil,
		},
		{
			desc:     "list things with given name",
			token:    adminToken,
			offset:   0,
			limit:    1,
			name:     "client10",
			response: []sdk.Thing{ths[0]},
			err:      nil,
		},
		{
			desc:     "list things with given owner",
			token:    adminToken,
			offset:   0,
			limit:    1,
			ownerID:  owner,
			response: []sdk.Thing{ths[50]},
			err:      nil,
		},
		{
			desc:     "list things with given status",
			token:    adminToken,
			offset:   0,
			limit:    1,
			status:   mfclients.DisabledStatus.String(),
			response: []sdk.Thing{ths[50]},
			err:      nil,
		},
		{
			desc:     "list things with given tag",
			token:    adminToken,
			offset:   0,
			limit:    1,
			tag:      "tag1",
			response: []sdk.Thing{ths[50]},
			err:      nil,
		},
	}

	for _, tc := range cases {
		pm := sdk.PageMetadata{
			Status:   tc.status,
			Total:    total,
			Offset:   tc.offset,
			Limit:    tc.limit,
			Name:     tc.name,
			OwnerID:  tc.ownerID,
			Metadata: tc.metadata,
			Tag:      tc.tag,
		}

		repoCall := cRepo.On("RetrieveAll", mock.Anything, mock.Anything).Return(mfclients.ClientsPage{Page: convertClientPage(pm), Clients: convertThings(tc.response)}, tc.err)
		page, err := mfsdk.Things(pm, adminToken)
		assert.Equal(t, tc.err, err, fmt.Sprintf("%s: expected error %s, got %s", tc.desc, tc.err, err))
		assert.Equal(t, tc.response, page.Things, fmt.Sprintf("%s: expected %v got %v\n", tc.desc, tc.response, page))
		repoCall.Unset()
	}
}

func TestListThingsByChannel(t *testing.T) {
	ts, cRepo, _, _ := newClientServer()
	defer ts.Close()

	conf := sdk.Config{
		ThingsURL: ts.URL,
	}
	mfsdk := sdk.NewSDK(conf)

	nThing := uint64(10)
	aThings := []sdk.Thing{}

	for i := uint64(1); i < nThing; i++ {
		thing := sdk.Thing{
			Name: fmt.Sprintf("member_%d@example.com", i),
			Credentials: sdk.Credentials{
				Secret: generateUUID(t),
			},
			Tags:     []string{"tag1", "tag2"},
			Metadata: sdk.Metadata{"role": "client"},
			Status:   mfclients.EnabledStatus.String(),
		}
		aThings = append(aThings, thing)
	}

	cases := []struct {
		desc      string
		token     string
		channelID string
		page      sdk.PageMetadata
		response  []sdk.Thing
		err       errors.SDKError
	}{
		{
			desc:      "list things with authorized token",
			token:     adminToken,
			channelID: testsutil.GenerateUUID(t),
			page:      sdk.PageMetadata{},
			response:  aThings,
			err:       nil,
		},
		{
			desc:      "list things with offset and limit",
			token:     adminToken,
			channelID: testsutil.GenerateUUID(t),
			page: sdk.PageMetadata{
				Offset: 4,
				Limit:  nThing,
			},
			response: aThings[4:],
			err:      nil,
		},
		{
			desc:      "list things with given name",
			token:     adminToken,
			channelID: testsutil.GenerateUUID(t),
			page: sdk.PageMetadata{
				Name:   Identity,
				Offset: 6,
				Limit:  nThing,
			},
			response: aThings[6:],
			err:      nil,
		},

		{
			desc:      "list things with given ownerID",
			token:     adminToken,
			channelID: testsutil.GenerateUUID(t),
			page: sdk.PageMetadata{
				OwnerID: user.Owner,
				Offset:  6,
				Limit:   nThing,
			},
			response: aThings[6:],
			err:      nil,
		},
		{
			desc:      "list things with given subject",
			token:     adminToken,
			channelID: testsutil.GenerateUUID(t),
			page: sdk.PageMetadata{
				Subject: subject,
				Offset:  6,
				Limit:   nThing,
			},
			response: aThings[6:],
			err:      nil,
		},
		{
			desc:      "list things with given object",
			token:     adminToken,
			channelID: testsutil.GenerateUUID(t),
			page: sdk.PageMetadata{
				Object: object,
				Offset: 6,
				Limit:  nThing,
			},
			response: aThings[6:],
			err:      nil,
		},
		{
			desc:      "list things with an invalid token",
			token:     invalidToken,
			channelID: testsutil.GenerateUUID(t),
			page:      sdk.PageMetadata{},
			response:  []sdk.Thing(nil),
			err:       errors.NewSDKErrorWithStatus(errors.ErrAuthentication, http.StatusUnauthorized),
		},
		{
			desc:      "list things with an invalid id",
			token:     adminToken,
			channelID: mocks.WrongID,
			page:      sdk.PageMetadata{},
			response:  []sdk.Thing(nil),
			err:       errors.NewSDKErrorWithStatus(errors.ErrNotFound, http.StatusNotFound),
		},
	}

	for _, tc := range cases {
		repoCall := cRepo.On("Members", mock.Anything, tc.channelID, mock.Anything).Return(mfclients.MembersPage{Members: convertThings(tc.response)}, tc.err)
		membersPage, err := mfsdk.ThingsByChannel(tc.channelID, tc.page, tc.token)
		assert.Equal(t, tc.err, err, fmt.Sprintf("%s: expected error %s, got %s", tc.desc, tc.err, err))
		assert.Equal(t, tc.response, membersPage.Things, fmt.Sprintf("%s: expected %v got %v\n", tc.desc, tc.response, membersPage.Things))
		if tc.err == nil {
			ok := repoCall.Parent.AssertCalled(t, "Members", mock.Anything, tc.channelID, mock.Anything)
			assert.True(t, ok, fmt.Sprintf("Members was not called on %s", tc.desc))
		}
		repoCall.Unset()
	}
}

func TestThing(t *testing.T) {
	ts, cRepo, _, _ := newClientServer()
	defer ts.Close()

	thing := sdk.Thing{
		Name:        "thingname",
		Tags:        []string{"tag1", "tag2"},
		Credentials: sdk.Credentials{Identity: "clientidentity", Secret: generateUUID(t)},
		Metadata:    validMetadata,
		Status:      mfclients.EnabledStatus.String(),
	}
	conf := sdk.Config{
		ThingsURL: ts.URL,
	}
	mfsdk := sdk.NewSDK(conf)

	cases := []struct {
		desc     string
		token    string
		thingID  string
		response sdk.Thing
		err      errors.SDKError
	}{
		{
			desc:     "view thing successfully",
			response: thing,
			token:    adminToken,
			thingID:  generateUUID(t),
			err:      nil,
		},
		{
			desc:     "view thing with an invalid token",
			response: sdk.Thing{},
			token:    invalidToken,
			thingID:  generateUUID(t),
			err:      errors.NewSDKErrorWithStatus(errors.ErrAuthentication, http.StatusUnauthorized),
		},
		{
			desc:     "view thing with valid token and invalid thing id",
			response: sdk.Thing{},
			token:    adminToken,
			thingID:  mocks.WrongID,
			err:      errors.NewSDKErrorWithStatus(errors.ErrNotFound, http.StatusNotFound),
		},
		{
			desc:     "view thing with an invalid token and invalid thing id",
			response: sdk.Thing{},
			token:    invalidToken,
			thingID:  mocks.WrongID,
			err:      errors.NewSDKErrorWithStatus(errors.ErrAuthentication, http.StatusUnauthorized),
		},
	}

	for _, tc := range cases {
		repoCall1 := cRepo.On("RetrieveByID", mock.Anything, tc.thingID).Return(convertThing(tc.response), tc.err)
		rClient, err := mfsdk.Thing(tc.thingID, tc.token)
		assert.Equal(t, tc.err, err, fmt.Sprintf("%s: expected error %s, got %s", tc.desc, tc.err, err))
		assert.Equal(t, tc.response, rClient, fmt.Sprintf("%s: expected %v got %v\n", tc.desc, tc.response, rClient))
		if tc.err == nil {
			ok := repoCall1.Parent.AssertCalled(t, "RetrieveByID", mock.Anything, tc.thingID)
			assert.True(t, ok, fmt.Sprintf("RetrieveByID was not called on %s", tc.desc))
		}
		repoCall1.Unset()
	}
}

func TestUpdateThing(t *testing.T) {
	ts, cRepo, _, _ := newClientServer()
	defer ts.Close()

	conf := sdk.Config{
		ThingsURL: ts.URL,
	}
	mfsdk := sdk.NewSDK(conf)

	thing := sdk.Thing{
		ID:          generateUUID(t),
		Name:        "clientname",
		Credentials: sdk.Credentials{Secret: generateUUID(t)},
		Metadata:    validMetadata,
		Status:      mfclients.EnabledStatus.String(),
	}

	thing1 := thing
	thing1.Name = "Updated client"

	thing2 := thing
	thing2.Metadata = sdk.Metadata{"role": "test"}
	thing2.ID = invalidIdentity

	cases := []struct {
		desc     string
		thing    sdk.Thing
		response sdk.Thing
		token    string
		err      errors.SDKError
	}{
		{
			desc:     "update thing name with valid token",
			thing:    thing1,
			response: thing1,
			token:    adminToken,
			err:      nil,
		},
		{
			desc:     "update thing name with invalid token",
			thing:    thing1,
			response: sdk.Thing{},
			token:    invalidToken,
			err:      errors.NewSDKErrorWithStatus(errors.ErrAuthentication, http.StatusUnauthorized),
		},
		{
			desc:     "update thing name with invalid id",
			thing:    thing2,
			response: sdk.Thing{},
			token:    adminToken,
			err:      errors.NewSDKErrorWithStatus(errors.Wrap(apiutil.ErrValidation, sdk.ErrFailedUpdate), http.StatusInternalServerError),
		},
		{
			desc: "update thing that can't be marshalled",
			thing: sdk.Thing{
				Name: "test",
				Metadata: map[string]interface{}{
					"test": make(chan int),
				},
			},
			response: sdk.Thing{},
			token:    token,
			err:      errors.NewSDKError(fmt.Errorf("json: unsupported type: chan int")),
		},
	}

	for _, tc := range cases {
		repoCall1 := cRepo.On("Update", mock.Anything, mock.Anything).Return(convertThing(tc.response), tc.err)
		uClient, err := mfsdk.UpdateThing(tc.thing, tc.token)
		assert.Equal(t, tc.err, err, fmt.Sprintf("%s: expected error %s, got %s", tc.desc, tc.err, err))
		assert.Equal(t, tc.response, uClient, fmt.Sprintf("%s: expected %v got %v\n", tc.desc, tc.response, uClient))
		if tc.err == nil {
			ok := repoCall1.Parent.AssertCalled(t, "Update", mock.Anything, mock.Anything)
			assert.True(t, ok, fmt.Sprintf("Update was not called on %s", tc.desc))
		}
		repoCall1.Unset()
	}
}

func TestUpdateThingTags(t *testing.T) {
	ts, cRepo, _, _ := newClientServer()
	defer ts.Close()

	conf := sdk.Config{
		ThingsURL: ts.URL,
	}
	mfsdk := sdk.NewSDK(conf)

	thing := sdk.Thing{
		ID:          generateUUID(t),
		Name:        "clientname",
		Tags:        []string{"tag1", "tag2"},
		Credentials: sdk.Credentials{Secret: generateUUID(t)},
		Status:      mfclients.EnabledStatus.String(),
	}

	thing1 := thing
	thing1.Tags = []string{"updatedTag1", "updatedTag2"}

	thing2 := thing
	thing2.ID = invalidIdentity

	cases := []struct {
		desc     string
		thing    sdk.Thing
		response sdk.Thing
		token    string
		err      error
	}{
		{
			desc:     "update thing name with valid token",
			thing:    thing,
			response: thing1,
			token:    adminToken,
			err:      nil,
		},
		{
			desc:     "update thing name with invalid token",
			thing:    thing1,
			response: sdk.Thing{},
			token:    invalidToken,
			err:      errors.NewSDKErrorWithStatus(errors.ErrAuthentication, http.StatusUnauthorized),
		},
		{
			desc:     "update thing name with invalid id",
			thing:    thing2,
			response: sdk.Thing{},
			token:    adminToken,
			err:      errors.NewSDKErrorWithStatus(errors.Wrap(apiutil.ErrValidation, sdk.ErrFailedUpdate), http.StatusInternalServerError),
		},
		{
			desc: "update thing that can't be marshalled",
			thing: sdk.Thing{
				Name: "test",
				Metadata: map[string]interface{}{
					"test": make(chan int),
				},
			},
			response: sdk.Thing{},
			token:    token,
			err:      errors.NewSDKError(fmt.Errorf("json: unsupported type: chan int")),
		},
	}

	for _, tc := range cases {
		repoCall1 := cRepo.On("UpdateTags", mock.Anything, mock.Anything).Return(convertThing(tc.response), tc.err)
		uClient, err := mfsdk.UpdateThingTags(tc.thing, tc.token)
		assert.Equal(t, tc.err, err, fmt.Sprintf("%s: expected error %s, got %s", tc.desc, tc.err, err))
		assert.Equal(t, tc.response, uClient, fmt.Sprintf("%s: expected %v got %v\n", tc.desc, tc.response, uClient))
		if tc.err == nil {
			ok := repoCall1.Parent.AssertCalled(t, "UpdateTags", mock.Anything, mock.Anything)
			assert.True(t, ok, fmt.Sprintf("UpdateTags was not called on %s", tc.desc))
		}
		repoCall1.Unset()
	}
}

func TestUpdateThingSecret(t *testing.T) {
	ts, cRepo, _, _ := newClientServer()
	defer ts.Close()

	conf := sdk.Config{
		ThingsURL: ts.URL,
	}
	mfsdk := sdk.NewSDK(conf)

	user.ID = generateUUID(t)
	rthing := thing
	rthing.Credentials.Secret, _ = phasher.Hash(user.Credentials.Secret)

	cases := []struct {
		desc      string
		oldSecret string
		newSecret string
		token     string
		response  sdk.Thing
		repoErr   error
		err       error
	}{
		{
			desc:      "update thing secret with valid token",
			oldSecret: thing.Credentials.Secret,
			newSecret: "newSecret",
			token:     adminToken,
			response:  rthing,
			repoErr:   nil,
			err:       nil,
		},
		{
			desc:      "update thing secret with invalid token",
			oldSecret: thing.Credentials.Secret,
			newSecret: "newPassword",
			token:     "non-existent",
			response:  sdk.Thing{},
			repoErr:   errors.ErrAuthorization,
			err:       errors.NewSDKErrorWithStatus(errors.ErrAuthentication, http.StatusUnauthorized),
		},
		{
			desc:      "update thing secret with wrong old secret",
			oldSecret: "oldSecret",
			newSecret: "newSecret",
			token:     adminToken,
			response:  sdk.Thing{},
			repoErr:   apiutil.ErrInvalidSecret,
			err:       errors.NewSDKErrorWithStatus(apiutil.ErrInvalidSecret, http.StatusBadRequest),
		},
	}
	for _, tc := range cases {
		repoCall1 := cRepo.On("UpdateSecret", mock.Anything, mock.Anything).Return(convertThing(tc.response), tc.repoErr)
		uClient, err := mfsdk.UpdateThingSecret(tc.oldSecret, tc.newSecret, tc.token)
		assert.Equal(t, tc.err, err, fmt.Sprintf("%s: expected error %s, got %s", tc.desc, tc.err, err))
		assert.Equal(t, tc.response, uClient, fmt.Sprintf("%s: expected %v got %v\n", tc.desc, tc.response, uClient))
		if tc.err == nil {
			ok := repoCall1.Parent.AssertCalled(t, "UpdateSecret", mock.Anything, mock.Anything)
			assert.True(t, ok, fmt.Sprintf("UpdateSecret was not called on %s", tc.desc))
		}
		repoCall1.Unset()
	}
}

func TestUpdateThingOwner(t *testing.T) {
	ts, cRepo, _, _ := newClientServer()
	defer ts.Close()

	conf := sdk.Config{
		ThingsURL: ts.URL,
	}
	mfsdk := sdk.NewSDK(conf)

	thing = sdk.Thing{
		ID:          generateUUID(t),
		Name:        "clientname",
		Tags:        []string{"tag1", "tag2"},
		Credentials: sdk.Credentials{Identity: "clientidentity", Secret: generateUUID(t)},
		Metadata:    validMetadata,
		Status:      mfclients.EnabledStatus.String(),
		Owner:       "owner",
	}

	thing2 := thing
	thing2.ID = invalidIdentity

	cases := []struct {
		desc     string
		thing    sdk.Thing
		response sdk.Thing
		token    string
		err      errors.SDKError
	}{
		{
			desc:     "update thing name with valid token",
			thing:    thing,
			response: thing,
			token:    adminToken,
			err:      nil,
		},
		{
			desc:     "update thing name with invalid token",
			thing:    thing2,
			response: sdk.Thing{},
			token:    invalidToken,
			err:      errors.NewSDKErrorWithStatus(errors.ErrAuthentication, http.StatusUnauthorized),
		},
		{
			desc:     "update thing name with invalid id",
			thing:    thing2,
			response: sdk.Thing{},
			token:    adminToken,
			err:      errors.NewSDKErrorWithStatus(errors.Wrap(apiutil.ErrValidation, sdk.ErrFailedUpdate), http.StatusInternalServerError),
		},
		{
			desc: "update thing that can't be marshalled",
			thing: sdk.Thing{
				Name: "test",
				Metadata: map[string]interface{}{
					"test": make(chan int),
				},
			},
			response: sdk.Thing{},
			token:    token,
			err:      errors.NewSDKError(fmt.Errorf("json: unsupported type: chan int")),
		},
	}

	for _, tc := range cases {
		repoCall1 := cRepo.On("UpdateOwner", mock.Anything, mock.Anything).Return(convertThing(tc.response), tc.err)
		uClient, err := mfsdk.UpdateThingOwner(tc.thing, tc.token)
		assert.Equal(t, tc.err, err, fmt.Sprintf("%s: expected error %s, got %s", tc.desc, tc.err, err))
		assert.Equal(t, tc.response, uClient, fmt.Sprintf("%s: expected %v got %v\n", tc.desc, tc.response, uClient))
		if tc.err == nil {
			ok := repoCall1.Parent.AssertCalled(t, "UpdateOwner", mock.Anything, mock.Anything)
			assert.True(t, ok, fmt.Sprintf("UpdateOwner was not called on %s", tc.desc))
		}
		repoCall1.Unset()
	}
}

func TestEnableThing(t *testing.T) {
	ts, cRepo, _, auth := newClientServer()
	defer ts.Close()

	conf := sdk.Config{
		ThingsURL: ts.URL,
	}
	mfsdk := sdk.NewSDK(conf)

	enabledThing1 := sdk.Thing{ID: testsutil.GenerateUUID(t), Credentials: sdk.Credentials{Identity: "client1@example.com", Secret: generateUUID(t)}, Status: mfclients.EnabledStatus.String()}
	disabledThing1 := sdk.Thing{ID: testsutil.GenerateUUID(t), Credentials: sdk.Credentials{Identity: "client3@example.com", Secret: generateUUID(t)}, Status: mfclients.DisabledStatus.String()}
	endisabledThing1 := disabledThing1
	endisabledThing1.Status = mfclients.EnabledStatus.String()
	endisabledThing1.ID = testsutil.GenerateUUID(t)

	cases := []struct {
		desc     string
		id       string
		token    string
		thing    sdk.Thing
		response sdk.Thing
		repoErr  error
		err      errors.SDKError
	}{
		{
			desc:     "enable disabled thing",
			id:       disabledThing1.ID,
			token:    adminToken,
			thing:    disabledThing1,
			response: endisabledThing1,
			repoErr:  nil,
			err:      nil,
		},
		{
			desc:     "enable enabled thing",
			id:       enabledThing1.ID,
			token:    adminToken,
			thing:    enabledThing1,
			response: sdk.Thing{},
			repoErr:  sdk.ErrFailedEnable,
			err:      errors.NewSDKErrorWithStatus(errors.Wrap(sdk.ErrFailedEnable, sdk.ErrFailedEnable), http.StatusInternalServerError),
		},
		{
			desc:     "enable non-existing thing",
			id:       mocks.WrongID,
			token:    adminToken,
			thing:    sdk.Thing{},
			response: sdk.Thing{},
			repoErr:  sdk.ErrFailedEnable,
			err:      errors.NewSDKErrorWithStatus(errors.Wrap(sdk.ErrFailedEnable, errors.ErrNotFound), http.StatusNotFound),
		},
	}

	for _, tc := range cases {
		repoCall1 := cRepo.On("RetrieveByID", mock.Anything, tc.id).Return(convertThing(tc.thing), tc.repoErr)
		repoCall2 := cRepo.On("ChangeStatus", mock.Anything, mock.Anything).Return(convertThing(tc.response), tc.repoErr)
		eClient, err := mfsdk.EnableThing(tc.id, tc.token)
		assert.Equal(t, tc.err, err, fmt.Sprintf("%s: expected error %s, got %s", tc.desc, tc.err, err))
		assert.Equal(t, tc.response, eClient, fmt.Sprintf("%s: expected %v got %v\n", tc.desc, tc.response, eClient))
		if tc.err == nil {
			ok := repoCall1.Parent.AssertCalled(t, "RetrieveByID", mock.Anything, tc.id)
			assert.True(t, ok, fmt.Sprintf("RetrieveByID was not called on %s", tc.desc))
			ok = repoCall2.Parent.AssertCalled(t, "ChangeStatus", mock.Anything, mock.Anything)
			assert.True(t, ok, fmt.Sprintf("ChangeStatus was not called on %s", tc.desc))
		}
		repoCall1.Unset()
		repoCall2.Unset()
	}

	cases2 := []struct {
		desc     string
		token    string
		status   string
		metadata sdk.Metadata
		response sdk.ThingsPage
		size     uint64
	}{
		{
			desc:   "list enabled clients",
			status: mfclients.EnabledStatus.String(),
			size:   2,
			response: sdk.ThingsPage{
				Things: []sdk.Thing{enabledThing1, endisabledThing1},
			},
		},
		{
			desc:   "list disabled clients",
			status: mfclients.DisabledStatus.String(),
			size:   1,
			response: sdk.ThingsPage{
				Things: []sdk.Thing{disabledThing1},
			},
		},
		{
			desc:   "list enabled and disabled clients",
			status: mfclients.AllStatus.String(),
			size:   3,
			response: sdk.ThingsPage{
				Things: []sdk.Thing{enabledThing1, disabledThing1, endisabledThing1},
			},
		},
	}

	for _, tc := range cases2 {
		pm := sdk.PageMetadata{
			Total:  100,
			Offset: 0,
			Limit:  100,
			Status: tc.status,
		}
		repoCall := auth.On("CheckAdmin", mock.Anything, mock.Anything).Return(nil)
		repoCall1 := cRepo.On("RetrieveAll", mock.Anything, mock.Anything).Return(convertThingsPage(tc.response), nil)
		clientsPage, err := mfsdk.Things(pm, adminToken)
		assert.Nil(t, err, fmt.Sprintf("unexpected error: %s", err))
		size := uint64(len(clientsPage.Things))
		assert.Equal(t, tc.size, size, fmt.Sprintf("%s: expected size %d got %d\n", tc.desc, tc.size, size))
		repoCall.Unset()
		repoCall1.Unset()
	}
}

func TestDisableThing(t *testing.T) {
	ts, cRepo, _, auth := newClientServer()
	defer ts.Close()

	conf := sdk.Config{
		ThingsURL: ts.URL,
	}
	mfsdk := sdk.NewSDK(conf)

	enabledThing1 := sdk.Thing{ID: testsutil.GenerateUUID(t), Credentials: sdk.Credentials{Identity: "client1@example.com", Secret: generateUUID(t)}, Status: mfclients.EnabledStatus.String()}
	disabledThing1 := sdk.Thing{ID: testsutil.GenerateUUID(t), Credentials: sdk.Credentials{Identity: "client3@example.com", Secret: generateUUID(t)}, Status: mfclients.DisabledStatus.String()}
	disenabledThing1 := enabledThing1
	disenabledThing1.Status = mfclients.DisabledStatus.String()
	disenabledThing1.ID = testsutil.GenerateUUID(t)

	cases := []struct {
		desc     string
		id       string
		token    string
		thing    sdk.Thing
		response sdk.Thing
		repoErr  error
		err      errors.SDKError
	}{
		{
			desc:     "disable enabled thing",
			id:       enabledThing1.ID,
			token:    adminToken,
			thing:    enabledThing1,
			response: disenabledThing1,
			repoErr:  nil,
			err:      nil,
		},
		{
			desc:     "disable disabled thing",
			id:       disabledThing1.ID,
			token:    adminToken,
			thing:    disabledThing1,
			response: sdk.Thing{},
			repoErr:  sdk.ErrFailedDisable,
			err:      errors.NewSDKErrorWithStatus(errors.Wrap(sdk.ErrFailedDisable, sdk.ErrFailedDisable), http.StatusInternalServerError),
		},
		{
			desc:     "disable non-existing thing",
			id:       mocks.WrongID,
			thing:    sdk.Thing{},
			token:    adminToken,
			response: sdk.Thing{},
			repoErr:  sdk.ErrFailedDisable,
			err:      errors.NewSDKErrorWithStatus(errors.Wrap(sdk.ErrFailedDisable, errors.ErrNotFound), http.StatusNotFound),
		},
	}

	for _, tc := range cases {
		repoCall1 := cRepo.On("RetrieveByID", mock.Anything, tc.id).Return(convertThing(tc.thing), tc.repoErr)
		repoCall2 := cRepo.On("ChangeStatus", mock.Anything, mock.Anything).Return(convertThing(tc.response), tc.repoErr)
		dThing, err := mfsdk.DisableThing(tc.id, tc.token)
		assert.Equal(t, tc.err, err, fmt.Sprintf("%s: expected error %s, got %s", tc.desc, tc.err, err))
		assert.Equal(t, tc.response, dThing, fmt.Sprintf("%s: expected %v got %v\n", tc.desc, tc.response, dThing))
		if tc.err == nil {
			ok := repoCall1.Parent.AssertCalled(t, "RetrieveByID", mock.Anything, tc.id)
			assert.True(t, ok, fmt.Sprintf("RetrieveByID was not called on %s", tc.desc))
			ok = repoCall2.Parent.AssertCalled(t, "ChangeStatus", mock.Anything, mock.Anything)
			assert.True(t, ok, fmt.Sprintf("ChangeStatus was not called on %s", tc.desc))
		}
		repoCall1.Unset()
		repoCall2.Unset()
	}

	cases2 := []struct {
		desc     string
		token    string
		status   string
		metadata sdk.Metadata
		response sdk.ThingsPage
		size     uint64
	}{
		{
			desc:   "list enabled things",
			status: mfclients.EnabledStatus.String(),
			size:   2,
			response: sdk.ThingsPage{
				Things: []sdk.Thing{enabledThing1, disenabledThing1},
			},
		},
		{
			desc:   "list disabled things",
			status: mfclients.DisabledStatus.String(),
			size:   1,
			response: sdk.ThingsPage{
				Things: []sdk.Thing{disabledThing1},
			},
		},
		{
			desc:   "list enabled and disabled things",
			status: mfclients.AllStatus.String(),
			size:   3,
			response: sdk.ThingsPage{
				Things: []sdk.Thing{enabledThing1, disabledThing1, disenabledThing1},
			},
		},
	}

	for _, tc := range cases2 {
		pm := sdk.PageMetadata{
			Total:  100,
			Offset: 0,
			Limit:  100,
			Status: tc.status,
		}
		repoCall := auth.On("CheckAdmin", mock.Anything, mock.Anything).Return(nil)
		repoCall1 := cRepo.On("RetrieveAll", mock.Anything, mock.Anything).Return(convertThingsPage(tc.response), nil)
		page, err := mfsdk.Things(pm, adminToken)
		assert.Nil(t, err, fmt.Sprintf("unexpected error: %s", err))
		size := uint64(len(page.Things))
		assert.Equal(t, tc.size, size, fmt.Sprintf("%s: expected size %d got %d\n", tc.desc, tc.size, size))
		repoCall.Unset()
		repoCall1.Unset()
	}
}

func TestIdentify(t *testing.T) {
	ts, cRepo, _, _ := newClientServer()
	defer ts.Close()

	conf := sdk.Config{
		ThingsURL: ts.URL,
	}
	mfsdk := sdk.NewSDK(conf)

	thing = sdk.Thing{
		ID:          generateUUID(t),
		Name:        "clientname",
		Credentials: sdk.Credentials{Identity: "clientidentity", Secret: generateUUID(t)},
		Status:      mfclients.EnabledStatus.String(),
	}

	cases := []struct {
		desc     string
		secret   string
		response string
		repoErr  error
		err      errors.SDKError
	}{
		{
			desc:     "identify thing successfully",
			response: thing.ID,
			secret:   thing.Credentials.Secret,
			repoErr:  nil,
			err:      nil,
		},
		{
			desc:     "identify thing with an invalid token",
			response: "",
			secret:   invalidToken,
			repoErr:  errors.ErrAuthentication,
			err:      errors.NewSDKErrorWithStatus(errors.ErrAuthentication, http.StatusUnauthorized),
		},
	}

	for _, tc := range cases {
		repoCall := cRepo.On("RetrieveBySecret", mock.Anything, mock.Anything).Return(convertThing(thing), tc.repoErr)
		id, err := mfsdk.IdentifyThing(tc.secret)
		assert.Equal(t, tc.err, err, fmt.Sprintf("%s: expected error %s, got %s", tc.desc, tc.err, err))
		assert.Equal(t, tc.response, id, fmt.Sprintf("%s: expected %v got %v\n", tc.desc, tc.response, id))
		if tc.err == nil {
			ok := repoCall.Parent.AssertCalled(t, "RetrieveBySecret", mock.Anything, mock.Anything)
			assert.True(t, ok, fmt.Sprintf("RetrieveBySecret was not called on %s", tc.desc))
		}
		repoCall.Unset()
	}
}

func TestShareThing(t *testing.T) {
	ts, _, _, auth := newClientServer()
	auth.Test(t)
	defer ts.Close()

	conf := sdk.Config{
		ThingsURL: ts.URL,
	}
	mfsdk := sdk.NewSDK(conf)

	cases := []struct {
		desc      string
		channelID string
		thingID   string
		token     string
		err       errors.SDKError
		repoErr   error
	}{
		{
			desc:      "share thing with valid token",
			channelID: generateUUID(t),
			thingID:   "thingID",
			token:     adminToken,
			err:       nil,
		},
		{
			desc:      "share thing with invalid token",
			channelID: generateUUID(t),
			thingID:   "thingID",
			token:     invalidToken,
			err:       errors.NewSDKErrorWithStatus(errors.Wrap(errors.ErrAuthorization, errors.ErrAuthentication), http.StatusUnauthorized),
		},
		{
			desc:      "share thing with valid token for unauthorized user",
			channelID: generateUUID(t),
			thingID:   "thingID",
			token:     userToken,
			err:       errors.NewSDKErrorWithStatus(errors.ErrAuthorization, http.StatusForbidden),
			repoErr:   errors.ErrAuthorization,
		},
	}

	for _, tc := range cases {
		req := sdk.UsersRelationRequest{
			Relation: "viewer",
			UserIDs:  []string{tc.channelID},
		}
		err := mfsdk.ShareThing(tc.thingID, req, tc.token)
		assert.Equal(t, tc.err, err, fmt.Sprintf("%s: expected error %s, got %s", tc.desc, tc.err, err))
	}
}