feat: dbcontext abstraction via dependency

backend/internal/services/auth.go

@@ -1,10 +1,14 @@
 package services
 
 import (
+	"context"
 	"easywish/internal/database"
 	errs "easywish/internal/errors"
+	"easywish/internal/logger"
 	"easywish/internal/models"
 	"easywish/internal/utils"
+
+	"go.uber.org/zap"
 )
 
 type AuthService interface {
@@ -15,14 +19,29 @@ type AuthService interface {
 }
 
 type authServiceImpl struct {
+	log logger.Logger
+	dbctx database.DbContext
 }
 
-func NewAuthService() AuthService {
-	return &authServiceImpl{}
+func NewAuthService(_log logger.Logger, _dbctx database.DbContext) AuthService {
+	return &authServiceImpl{log: _log, dbctx: _dbctx}
 }
 
 func (a *authServiceImpl) RegistrationBegin(request models.RegistrationBeginRequest) (bool, error) {
-	return false, errs.ErrNotImplemented
+
+	ctx := context.Background() 
+	queries := database.New(a.dbctx)
+	user, err := queries.CreateUser(ctx, request.Username) // TODO: validation
+
+  if err != nil {
+		a.log.Get().Error("Failed to add user to database", zap.Error(err))
+		return false, errs.ErrServerError
+	}
+	a.log.Get().Info("Registered a new user", zap.String("username", user.Username))
+
+	// TODO: Send verification email
+
+	return true, nil
 }
 
 func (a *authServiceImpl) RegistrationComplete(request models.RegistrationBeginRequest) (*models.RegistrationCompleteResponse, error) {