feat: 0.0.1

internal/handlers/grpc/rpc_login_user.go

@@ -0,0 +1,64 @@
+package gapi
+
+import (
+	"context"
+	"errors"
+	"strings"
+
+	db "github.com/FernandoJVideira/simple_bank/internal/db/sqlc"
+	"github.com/FernandoJVideira/simple_bank/internal/service"
+	"github.com/FernandoJVideira/simple_bank/internal/val"
+	"github.com/FernandoJVideira/simple_bank/pb"
+	"google.golang.org/genproto/googleapis/rpc/errdetails"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+func (s *Server) LoginUser(ctx context.Context, req *pb.LoginUserRequest) (*pb.LoginUserResponse, error) {
+	violations := validateLoginUserRequest(req)
+	if violations != nil {
+		return nil, invalidArgumentError(violations)
+	}
+
+	mtdt := s.extractMetadata(ctx)
+
+	result, err := s.authService.Login(ctx, service.LoginCredentials{
+		Username:  req.GetUsername(),
+		Password:  req.GetPassword(),
+		UserAgent: mtdt.UserAgent,
+		ClientIP:  mtdt.ClientIP,
+	})
+
+	if err != nil {
+		errMsg := err.Error()
+		if errors.Is(err, db.ErrRecordNotFound) || strings.Contains(errMsg, "user not found") {
+			return nil, status.Errorf(codes.NotFound, "user not found")
+		}
+		if strings.Contains(errMsg, "incorrect password") {
+			return nil, status.Errorf(codes.Unauthenticated, "incorrect password")
+		}
+		return nil, status.Errorf(codes.Internal, "failed to login: %v", err)
+	}
+
+	resp := convertLoginUserResponse(
+		result.User,
+		result.SessionID,
+		result.AccessToken,
+		result.RefreshToken,
+		result.AccessTokenExpiresAt,
+		result.RefreshTokenExpiresAt,
+	)
+	return resp, nil
+}
+
+// TODO: Change to throw "username or password is incorrect" instead of specifying which one is wrong
+func validateLoginUserRequest(req *pb.LoginUserRequest) (violations []*errdetails.BadRequest_FieldViolation) {
+	if err := val.ValidateUsername(req.GetUsername()); err != nil {
+		violations = append(violations, fieldViolation("username", err))
+	}
+
+	if err := val.ValidatePassword(req.GetPassword()); err != nil {
+		violations = append(violations, fieldViolation("password", err))
+	}
+	return violations
+}