add login route

internal/app/server.go

@@ -47,3 +47,13 @@ func (s *server) RefreshPassword(ctx context.Context, req *proto.RefreshPassword
 	}
 	return &proto.RefreshPasswordRsp{}, nil
 }
+
+func (s *server) Login(ctx context.Context, req *proto.LoginReq) (*proto.LoginRsp, error) {
+	err := s.usersService.Login(ctx, req.Email, req.Password)
+	if err != nil {
+		return &proto.LoginRsp{
+			Error: err.Error(),
+		}, nil
+	}
+	return &proto.LoginRsp{}, nil
+}

internal/repos/user.go

@@ -1,6 +1,10 @@
 package repos
 
 type User struct {
-	Username string
-	Email    string
+	ID           string
+	Username     string
+	Email        string
+	PasswordHash string
+	Role         string
+	IsActive     bool
 }

internal/repos/users_repo/repo.go

@@ -3,7 +3,9 @@ package users_repo
 import (
 	"context"
 	"errors"
+	"evening_detective_server/internal/repos"
 
+	"github.com/jackc/pgx/v5"
 	"github.com/jackc/pgx/v5/pgxpool"
 )
 
@@ -75,3 +77,33 @@ func (s *UsersRepo) UpdateUserPassword(
 
 	return nil
 }
+
+func (s *UsersRepo) GetUserByEmail(
+	ctx context.Context,
+	email string,
+) (*repos.User, error) {
+	user := &repos.User{}
+	row := s.pool.QueryRow(
+		ctx,
+		`SELECT id, username, email, password_hash, role, is_active
+		FROM users
+		WHERE email = $1`,
+		email,
+	)
+	err := row.Scan(
+		&user.ID,
+		&user.Username,
+		&user.Email,
+		&user.PasswordHash,
+		&user.Role,
+		&user.IsActive,
+	)
+	if err != nil {
+		if errors.Is(err, pgx.ErrNoRows) {
+			return nil, ErrUserNotFound
+		}
+		return nil, err
+	}
+
+	return user, nil
+}

internal/services/users_service/service.go

@@ -2,6 +2,7 @@ package users_service
 
 import (
 	"context"
+	"errors"
 	"evening_detective_server/internal/modules/email_sender"
 	"evening_detective_server/internal/modules/password_generator"
 	"evening_detective_server/internal/repos/users_repo"
@@ -91,3 +92,29 @@ func (s *UsersService) RefreshPassword(
 
 	return err
 }
+
+func (s *UsersService) Login(
+	ctx context.Context,
+	email string,
+	password string,
+) error {
+	user, err := s.usersRepo.GetUserByEmail(
+		ctx,
+		email,
+	)
+	if err != nil {
+		return err
+	}
+
+	if err = bcrypt.CompareHashAndPassword([]byte(user.PasswordHash), []byte(password)); err != nil {
+		return errors.New("Не верен email или пароль")
+	}
+
+	fmt.Println(user, err)
+
+	// gen tokens (module)
+
+	// save refresh token?
+
+	return nil // claims?
+}