#1: Integrate queue to the application

api/mojang/mojang.go

@@ -13,9 +13,31 @@ var HttpClient = &http.Client{
 }
 
 type SignedTexturesResponse struct {
-	Id    string      `json:"id"`
-	Name  string      `json:"name"`
-	Props []*Property `json:"properties"`
+	Id              string      `json:"id"`
+	Name            string      `json:"name"`
+	Props           []*Property `json:"properties"`
+	decodedTextures *TexturesProp
+}
+
+func (t *SignedTexturesResponse) DecodeTextures() *TexturesProp {
+	if t.decodedTextures == nil {
+		var texturesProp string
+		for _, prop := range t.Props {
+			if prop.Name == "textures" {
+				texturesProp = prop.Value
+				break
+			}
+		}
+
+		if texturesProp == "" {
+			return nil
+		}
+
+		decodedTextures, _ := DecodeTextures(texturesProp)
+		t.decodedTextures = decodedTextures
+	}
+
+	return t.decodedTextures
 }
 
 type Property struct {

api/mojang/mojang_test.go

@@ -8,6 +8,33 @@ import (
 	"gopkg.in/h2non/gock.v1"
 )
 
+func TestSignedTexturesResponse(t *testing.T) {
+	t.Run("DecodeTextures", func(t *testing.T) {
+		obj := &SignedTexturesResponse{
+			Id:   "00000000000000000000000000000000",
+			Name: "mock",
+			Props: []*Property{
+				{
+					Name:  "textures",
+					Value: "eyJ0aW1lc3RhbXAiOjE1NTU4NTYzMDc0MTIsInByb2ZpbGVJZCI6IjNlM2VlNmMzNWFmYTQ4YWJiNjFlOGNkOGM0MmZjMGQ5IiwicHJvZmlsZU5hbWUiOiJFcmlja1NrcmF1Y2giLCJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZmMxNzU3NjMzN2ExMDZkOWMyMmFjNzgyZTM2MmMxNmM0ZTBlNDliZTUzZmFhNDE4NTdiZmYzMzJiNzc5MjgxZSJ9fX0=",
+				},
+			},
+		}
+		textures := obj.DecodeTextures()
+		testify.Equal(t, "3e3ee6c35afa48abb61e8cd8c42fc0d9", textures.ProfileID)
+	})
+
+	t.Run("DecodedTextures without textures prop", func(t *testing.T) {
+		obj := &SignedTexturesResponse{
+			Id:    "00000000000000000000000000000000",
+			Name:  "mock",
+			Props: []*Property{},
+		}
+		textures := obj.DecodeTextures()
+		testify.Nil(t, textures)
+	})
+}
+
 func TestUsernamesToUuids(t *testing.T) {
 	t.Run("exchange usernames to uuids", func(t *testing.T) {
 		assert := testify.New(t)

api/mojang/queue/queue.go

@@ -33,6 +33,7 @@ type JobsQueue struct {
 }
 
 func (ctx *JobsQueue) GetTexturesForUsername(username string) chan *mojang.SignedTexturesResponse {
+	// TODO: convert username to lower case
 	ctx.onFirstCall.Do(func() {
 		ctx.queue.New()
 		ctx.broadcast = newBroadcaster()

api/mojang/queue/storage.go

@@ -20,6 +20,29 @@ type Storage interface {
 	TexturesStorage
 }
 
+// SplittedStorage allows you to use separate storage engines to satisfy
+// the Storage interface
+type SplittedStorage struct {
+	UuidsStorage
+	TexturesStorage
+}
+
+func (s *SplittedStorage) GetUuid(username string) (string, error) {
+	return s.UuidsStorage.GetUuid(username)
+}
+
+func (s *SplittedStorage) StoreUuid(username string, uuid string) {
+	s.UuidsStorage.StoreUuid(username, uuid)
+}
+
+func (s *SplittedStorage) GetTextures(uuid string) (*mojang.SignedTexturesResponse, error) {
+	return s.TexturesStorage.GetTextures(uuid)
+}
+
+func (s *SplittedStorage) StoreTextures(textures *mojang.SignedTexturesResponse) {
+	s.TexturesStorage.StoreTextures(textures)
+}
+
 // This error can be used to indicate, that requested
 // value doesn't exists in the storage
 type ValueNotFound struct {

api/mojang/queue/storage_test.go

@@ -0,0 +1,88 @@
+package queue
+
+import (
+	"github.com/elyby/chrly/api/mojang"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"testing"
+)
+
+type uuidsStorageMock struct {
+	mock.Mock
+}
+
+func (m *uuidsStorageMock) GetUuid(username string) (string, error) {
+	args := m.Called(username)
+	return args.String(0), args.Error(1)
+}
+
+func (m *uuidsStorageMock) StoreUuid(username string, uuid string) {
+	m.Called(username, uuid)
+}
+
+type texturesStorageMock struct {
+	mock.Mock
+}
+
+func (m *texturesStorageMock) GetTextures(uuid string) (*mojang.SignedTexturesResponse, error) {
+	args := m.Called(uuid)
+	var result *mojang.SignedTexturesResponse
+	if casted, ok := args.Get(0).(*mojang.SignedTexturesResponse); ok {
+		result = casted
+	}
+
+	return result, args.Error(1)
+}
+
+func (m *texturesStorageMock) StoreTextures(textures *mojang.SignedTexturesResponse) {
+	m.Called(textures)
+}
+
+func TestSplittedStorage(t *testing.T) {
+	createMockedStorage := func() (*SplittedStorage, *uuidsStorageMock, *texturesStorageMock) {
+		uuidsStorage := &uuidsStorageMock{}
+		texturesStorage := &texturesStorageMock{}
+
+		return &SplittedStorage{uuidsStorage, texturesStorage}, uuidsStorage, texturesStorage
+	}
+
+	t.Run("GetUuid", func(t *testing.T) {
+		storage, uuidsMock, _ := createMockedStorage()
+		uuidsMock.On("GetUuid", "username").Once().Return("find me", nil)
+		result, err := storage.GetUuid("username")
+		assert.Nil(t, err)
+		assert.Equal(t, "find me", result)
+		uuidsMock.AssertExpectations(t)
+	})
+
+	t.Run("StoreUuid", func(t *testing.T) {
+		storage, uuidsMock, _ := createMockedStorage()
+		uuidsMock.On("StoreUuid", "username", "result").Once()
+		storage.StoreUuid("username", "result")
+		uuidsMock.AssertExpectations(t)
+	})
+
+	t.Run("GetTextures", func(t *testing.T) {
+		result := &mojang.SignedTexturesResponse{Id: "mock id"}
+		storage, _, texturesMock := createMockedStorage()
+		texturesMock.On("GetTextures", "uuid").Once().Return(result, nil)
+		returned, err := storage.GetTextures("uuid")
+		assert.Nil(t, err)
+		assert.Equal(t, result, returned)
+		texturesMock.AssertExpectations(t)
+	})
+
+	t.Run("StoreTextures", func(t *testing.T) {
+		toStore := &mojang.SignedTexturesResponse{Id: "mock id"}
+		storage, _, texturesMock := createMockedStorage()
+		texturesMock.On("StoreTextures", toStore).Once()
+		storage.StoreTextures(toStore)
+		texturesMock.AssertExpectations(t)
+	})
+}
+
+func TestValueNotFound_Error(t *testing.T) {
+	err := &ValueNotFound{}
+	assert.Equal(t, "value not found in the storage", err.Error())
+}