Add projects

pkg/application/users/service.go

@@ -0,0 +1,54 @@
+package users
+
+import (
+	"context"
+	"fmt"
+	"github.com/eko/gocache/cache"
+	"go.uber.org/zap"
+)
+
+type Service struct {
+	logger         *zap.Logger
+	cache          *cache.Cache
+	repository     Repository
+	passwordHasher PasswordHasher
+}
+
+func NewService(l *zap.Logger, ur Repository, c *cache.Cache) *Service {
+	return &Service{
+		logger:         l,
+		repository:     ur,
+		cache:          c,
+		passwordHasher: NewPlainTextPasswordHasher(),
+	}
+}
+
+func (s *Service) Create(email string, password string) (int, error) {
+	createUser, err := NewCreateUser(email, password, s.passwordHasher)
+	if err != nil {
+		return -1, err
+	}
+
+	var userId int
+	userId, err = s.repository.Create(context.Background(), createUser)
+	if err != nil {
+		s.logger.Warn("Could not create user in service")
+		return 0, err
+	}
+
+	return userId, nil
+}
+
+func (s *Service) Authenticate(ctx context.Context, email string, password string) (*User, error) {
+	loadFunc := func(key interface{}) (interface{}, error) {
+		s.logger.Debug("getting user from cache", zap.String("email", email))
+		return s.repository.GetByEmail(ctx, email, s.passwordHasher.HashPassword(password))
+	}
+
+	get, err := cache.NewLoadable(loadFunc, s.cache).Get(fmt.Sprintf("user_email_%s", email))
+	if err != nil {
+		return nil, err
+	}
+
+	return get.(*User), nil
+}