392 lines
12 KiB
Go
392 lines
12 KiB
Go
package service
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import (
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"encoding/json"
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"errors"
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"strings"
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"time"
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"unicode/utf8"
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"infinite-canvas/backend/internal/model"
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"gorm.io/gorm"
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)
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type AssetsSyncRequest struct {
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Assets []json.RawMessage `json:"assets"`
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}
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type CanvasProjectsSyncRequest struct {
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Projects []json.RawMessage `json:"projects"`
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}
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type UserDataSummary struct {
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ID string `json:"id"`
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Kind string `json:"kind,omitempty"`
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Category string `json:"category,omitempty"`
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Status string `json:"status,omitempty"`
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Title string `json:"title"`
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CreatedAt time.Time `json:"createdAt"`
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UpdatedAt time.Time `json:"updatedAt"`
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}
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type UserDataSnapshot struct {
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Assets []json.RawMessage `json:"assets"`
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Projects []json.RawMessage `json:"projects"`
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}
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func (s *Service) UserDataSnapshot(userID string) (UserDataSnapshot, error) {
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assets, err := s.UserAssets(userID)
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if err != nil {
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return UserDataSnapshot{}, err
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}
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projects, err := s.UserCanvasProjects(userID)
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if err != nil {
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return UserDataSnapshot{}, err
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}
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return UserDataSnapshot{Assets: assets, Projects: projects}, nil
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}
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func (s *Service) UserAssetSummaries(userID string) ([]UserDataSummary, error) {
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assets, err := s.repo.AssetSummaries(userID)
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if err != nil {
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return nil, err
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}
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result := make([]UserDataSummary, 0, len(assets))
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for _, asset := range assets {
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result = append(result, UserDataSummary{ID: asset.ID, Kind: asset.Kind, Category: string(asset.Category), Status: string(asset.Status), Title: asset.Title, CreatedAt: asset.CreatedAt, UpdatedAt: asset.UpdatedAt})
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}
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return result, nil
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}
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func (s *Service) UserAsset(userID string, id string) (json.RawMessage, error) {
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asset, err := s.repo.AssetForUser(userID, id)
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if err != nil {
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return nil, err
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}
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return json.RawMessage(asset.PayloadJSON), nil
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}
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func (s *Service) UpsertUserAsset(userID string, raw json.RawMessage) (UserDataSummary, error) {
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asset, err := assetFromJSON(userID, raw)
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if err != nil {
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return UserDataSummary{}, err
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}
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policy, err := s.RuntimePolicy()
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if err != nil {
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return UserDataSummary{}, err
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}
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s.storageMu.Lock()
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defer s.storageMu.Unlock()
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existing, existingErr := s.repo.AssetForUser(userID, asset.ID)
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if existingErr != nil && !errors.Is(existingErr, gorm.ErrRecordNotFound) {
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return UserDataSummary{}, existingErr
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}
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existingBytes := int64(0)
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if existing != nil {
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existingBytes = int64(len([]byte(existing.PayloadJSON)))
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}
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usage, err := s.repo.UserStorageUsage(userID)
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if err != nil {
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return UserDataSummary{}, err
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}
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if err := validateStructuredStorageQuotaWithPolicy(usage, "asset", errors.Is(existingErr, gorm.ErrRecordNotFound), int64(len(raw))-existingBytes, policy.Resource); err != nil {
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return UserDataSummary{}, err
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}
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if err := s.repo.UpsertAsset(&asset); err != nil {
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return UserDataSummary{}, err
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}
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if existingErr != nil {
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s.recordActivity(userID, "asset", 1)
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}
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return UserDataSummary{ID: asset.ID, Kind: asset.Kind, Category: string(asset.Category), Status: string(asset.Status), Title: asset.Title, CreatedAt: asset.CreatedAt, UpdatedAt: asset.UpdatedAt}, nil
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}
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func (s *Service) DeleteUserAsset(userID string, id string) error {
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s.storageMu.Lock()
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defer s.storageMu.Unlock()
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return s.deleteUserAssetWithResources(userID, id)
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}
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func (s *Service) UserAssets(userID string) ([]json.RawMessage, error) {
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assets, err := s.repo.Assets(userID)
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if err != nil {
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return nil, err
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}
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result := make([]json.RawMessage, 0, len(assets))
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for _, asset := range assets {
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if strings.TrimSpace(asset.PayloadJSON) != "" {
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result = append(result, json.RawMessage(asset.PayloadJSON))
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}
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}
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return result, nil
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}
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func (s *Service) ReplaceUserAssets(userID string, req AssetsSyncRequest) ([]json.RawMessage, error) {
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assets := make([]model.Asset, 0, len(req.Assets))
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var totalBytes int64
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for _, raw := range req.Assets {
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item, err := assetFromJSON(userID, raw)
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if err != nil {
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return nil, err
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}
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assets = append(assets, item)
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totalBytes += int64(len(raw))
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}
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policy, err := s.RuntimePolicy()
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if err != nil {
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return nil, err
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}
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s.storageMu.Lock()
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defer s.storageMu.Unlock()
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usage, err := s.repo.UserStorageUsage(userID)
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if err != nil {
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return nil, err
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}
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if err := validateStructuredReplacementQuotaWithPolicy(usage, "asset", len(assets), totalBytes, policy.Resource); err != nil {
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return nil, err
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}
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if err := s.repo.ReplaceAssets(userID, assets); err != nil {
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return nil, err
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}
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if len(assets) > 0 {
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s.recordActivity(userID, "asset", len(assets))
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}
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return s.UserAssets(userID)
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}
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func (s *Service) UserCanvasProjects(userID string) ([]json.RawMessage, error) {
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projects, err := s.repo.CanvasProjects(userID)
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if err != nil {
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return nil, err
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}
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result := make([]json.RawMessage, 0, len(projects))
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for _, project := range projects {
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if strings.TrimSpace(project.PayloadJSON) != "" {
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result = append(result, json.RawMessage(project.PayloadJSON))
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}
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}
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return result, nil
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}
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func (s *Service) UserCanvasProjectSummaries(userID string) ([]UserDataSummary, error) {
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projects, err := s.repo.CanvasProjectSummaries(userID)
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if err != nil {
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return nil, err
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}
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result := make([]UserDataSummary, 0, len(projects))
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for _, project := range projects {
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result = append(result, UserDataSummary{ID: project.ID, Title: project.Title, CreatedAt: project.CreatedAt, UpdatedAt: project.UpdatedAt})
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}
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return result, nil
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}
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func (s *Service) UserCanvasProject(userID string, id string) (json.RawMessage, error) {
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project, err := s.repo.CanvasProjectForUser(userID, id)
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if err != nil {
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return nil, err
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}
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return json.RawMessage(project.PayloadJSON), nil
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}
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func (s *Service) UpsertUserCanvasProject(userID string, raw json.RawMessage) (UserDataSummary, error) {
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project, err := canvasProjectFromJSON(userID, raw)
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if err != nil {
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return UserDataSummary{}, err
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}
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policy, err := s.RuntimePolicy()
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if err != nil {
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return UserDataSummary{}, err
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}
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s.storageMu.Lock()
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defer s.storageMu.Unlock()
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existing, existingErr := s.repo.CanvasProjectForUser(userID, project.ID)
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if existingErr != nil && !errors.Is(existingErr, gorm.ErrRecordNotFound) {
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return UserDataSummary{}, existingErr
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}
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existingBytes := int64(0)
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if existing != nil {
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existingBytes = int64(len([]byte(existing.PayloadJSON)))
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}
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usage, err := s.repo.UserStorageUsage(userID)
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if err != nil {
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return UserDataSummary{}, err
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}
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if err := validateStructuredStorageQuotaWithPolicy(usage, "canvas", errors.Is(existingErr, gorm.ErrRecordNotFound), int64(len(raw))-existingBytes, policy.Resource); err != nil {
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return UserDataSummary{}, err
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}
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if err := s.repo.UpsertCanvasProject(&project); err != nil {
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return UserDataSummary{}, err
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}
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if existingErr != nil || existing.PayloadJSON != project.PayloadJSON || existing.Title != project.Title {
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s.recordActivity(userID, "canvas", 1)
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}
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return UserDataSummary{ID: project.ID, Title: project.Title, CreatedAt: project.CreatedAt, UpdatedAt: project.UpdatedAt}, nil
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}
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func (s *Service) DeleteUserCanvasProject(userID string, id string) error {
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return s.repo.DeleteCanvasProject(userID, id)
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}
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func (s *Service) ReplaceUserCanvasProjects(userID string, req CanvasProjectsSyncRequest) ([]json.RawMessage, error) {
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projects := make([]model.CanvasProject, 0, len(req.Projects))
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var totalBytes int64
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for _, raw := range req.Projects {
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item, err := canvasProjectFromJSON(userID, raw)
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if err != nil {
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return nil, err
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}
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projects = append(projects, item)
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totalBytes += int64(len(raw))
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}
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policy, err := s.RuntimePolicy()
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if err != nil {
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return nil, err
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}
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s.storageMu.Lock()
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defer s.storageMu.Unlock()
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usage, err := s.repo.UserStorageUsage(userID)
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if err != nil {
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return nil, err
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}
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if err := validateStructuredReplacementQuotaWithPolicy(usage, "canvas", len(projects), totalBytes, policy.Resource); err != nil {
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return nil, err
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}
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if err := s.repo.ReplaceCanvasProjects(userID, projects); err != nil {
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return nil, err
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}
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if len(projects) > 0 {
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s.recordActivity(userID, "canvas", 1)
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}
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return s.UserCanvasProjects(userID)
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}
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func assetFromJSON(userID string, raw json.RawMessage) (model.Asset, error) {
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if err := validateSyncedPayload(raw, "素材"); err != nil {
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return model.Asset{}, err
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}
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var payload struct {
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ID string `json:"id"`
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Kind string `json:"kind"`
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Category string `json:"category"`
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Status string `json:"status"`
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PrimaryVersionID string `json:"primaryVersionId"`
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Title string `json:"title"`
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CreatedAt string `json:"createdAt"`
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UpdatedAt string `json:"updatedAt"`
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}
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if err := json.Unmarshal(raw, &payload); err != nil {
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return model.Asset{}, BadAuthRequest("素材数据格式错误")
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}
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now := time.Now()
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createdAt := parseClientTime(payload.CreatedAt, now)
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updatedAt := parseClientTime(payload.UpdatedAt, createdAt)
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id := strings.TrimSpace(payload.ID)
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if id == "" {
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id = newID()
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}
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if utf8.RuneCountInString(id) > model.AssetIDMaxLength {
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return model.Asset{}, BadAuthRequest("素材 ID 不能超过 80 个字符")
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}
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primaryVersionID := strings.TrimSpace(payload.PrimaryVersionID)
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if utf8.RuneCountInString(primaryVersionID) > 36 {
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return model.Asset{}, BadAuthRequest("素材主版本 ID 不能超过 36 个字符")
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}
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category := model.AssetCategory(strings.TrimSpace(payload.Category))
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if category == "" {
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category = model.AssetCategoryOther
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}
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status := model.AssetVersionStatus(strings.TrimSpace(payload.Status))
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if status == "" {
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status = model.AssetVersionStatusConfirmed
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}
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return model.Asset{
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ID: id,
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UserID: userID,
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Kind: strings.TrimSpace(payload.Kind),
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Category: category,
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Status: status,
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PrimaryVersionID: primaryVersionID,
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Title: strings.TrimSpace(payload.Title),
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PayloadJSON: string(raw),
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CreatedAt: createdAt,
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UpdatedAt: updatedAt,
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}, nil
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}
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func canvasProjectFromJSON(userID string, raw json.RawMessage) (model.CanvasProject, error) {
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if err := validateSyncedPayload(raw, "画布"); err != nil {
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return model.CanvasProject{}, err
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}
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var payload struct {
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ID string `json:"id"`
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Title string `json:"title"`
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ProjectID string `json:"projectId"`
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CreatedAt string `json:"createdAt"`
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UpdatedAt string `json:"updatedAt"`
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}
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if err := json.Unmarshal(raw, &payload); err != nil {
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return model.CanvasProject{}, BadAuthRequest("画布数据格式错误")
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}
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now := time.Now()
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createdAt := parseClientTime(payload.CreatedAt, now)
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updatedAt := parseClientTime(payload.UpdatedAt, createdAt)
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id := strings.TrimSpace(payload.ID)
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if id == "" {
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id = newID()
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}
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return model.CanvasProject{
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ID: id,
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UserID: userID,
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ProjectID: strings.TrimSpace(payload.ProjectID),
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Title: strings.TrimSpace(payload.Title),
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PayloadJSON: string(raw),
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CreatedAt: createdAt,
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UpdatedAt: updatedAt,
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}, nil
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}
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func validateSyncedPayload(raw json.RawMessage, label string) error {
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if len(raw) > 4<<20 {
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return BadAuthRequest(label + "数据超过 4MB，请先把媒体文件保存到资源存储")
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}
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var payload interface{}
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if err := json.Unmarshal(raw, &payload); err == nil && containsInlineMediaDataURL(payload) {
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return BadAuthRequest(label + "数据包含内嵌媒体，请先上传到资源存储")
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}
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return nil
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}
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// 同步数据只禁止作为字段值存在的媒体 Data URL；提示词和上游错误文案可能合法提到相同字符串。
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func containsInlineMediaDataURL(value interface{}) bool {
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switch item := value.(type) {
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case string:
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text := strings.ToLower(strings.TrimSpace(item))
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return strings.HasPrefix(text, "data:image/") || strings.HasPrefix(text, "data:video/") || strings.HasPrefix(text, "data:audio/")
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case []interface{}:
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for _, child := range item {
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if containsInlineMediaDataURL(child) {
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return true
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}
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}
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case map[string]interface{}:
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for _, child := range item {
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if containsInlineMediaDataURL(child) {
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return true
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}
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}
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}
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return false
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}
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func parseClientTime(value string, fallback time.Time) time.Time {
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value = strings.TrimSpace(value)
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if value == "" {
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return fallback
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}
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if parsed, err := time.Parse(time.RFC3339Nano, value); err == nil {
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return parsed
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}
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return fallback
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}
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