feat: impl bearer auth middleware

apps/backend/internal/user/err.go

@@ -0,0 +1,19 @@
+package user
+
+import (
+	"fmt"
+
+	"github.com/google/uuid"
+)
+
+type NotFoundError struct {
+	id uuid.UUID
+}
+
+func newNotFoundError(id uuid.UUID) *NotFoundError {
+	return &NotFoundError{id}
+}
+
+func (e *NotFoundError) Error() string {
+	return fmt.Sprintf("user not found: %v", e.id)
+}

apps/backend/internal/user/service.go

@@ -0,0 +1,32 @@
+package user
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+
+	"github.com/google/uuid"
+	"github.com/uptrace/bun"
+)
+
+type Service struct {
+	db *bun.DB
+}
+
+func NewService(db *bun.DB) *Service {
+	return &Service{
+		db: db,
+	}
+}
+
+func (s *Service) UserByID(ctx context.Context, id uuid.UUID) (*User, error) {
+	var user User
+	err := s.db.NewSelect().Model(&user).Where("id = ?", id).Scan(ctx)
+	if err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			return nil, newNotFoundError(id)
+		}
+		return nil, err
+	}
+	return &user, nil
+}

apps/backend/internal/user/user.go

@@ -0,0 +1,17 @@
+package user
+
+import (
+	"github.com/google/uuid"
+	"github.com/uptrace/bun"
+)
+
+type User struct {
+	bun.BaseModel `bun:"users"`
+
+	ID                uuid.UUID `bun:",pk,type:uuid" json:"id"`
+	DisplayName       string    `bun:"display_name,notnull" json:"displayName"`
+	Email             string    `bun:"email,unique,notnull" json:"email"`
+	Password          string    `bun:"password,notnull" json:"-"`
+	StorageUsageBytes int64     `bun:"storage_usage_bytes,notnull" json:"storageUsageBytes"`
+	StorageQuotaBytes int64     `bun:"storage_quota_bytes,notnull" json:"storageQuotaBytes"`
+}