455 lines
15 KiB
Go
455 lines
15 KiB
Go
package canvas
|
|
|
|
import (
|
|
"encoding/json"
|
|
"errors"
|
|
"infinite-canvas/backend/internal/kernel"
|
|
"net/http"
|
|
"strings"
|
|
"time"
|
|
"unicode/utf8"
|
|
|
|
"infinite-canvas/backend/internal/model"
|
|
"infinite-canvas/backend/internal/repository"
|
|
|
|
"gorm.io/gorm"
|
|
)
|
|
|
|
type AssetsSyncRequest struct {
|
|
Assets []json.RawMessage `json:"assets"`
|
|
}
|
|
|
|
type UserDataSummary struct {
|
|
ID string `json:"id"`
|
|
FolderID string `json:"folderId,omitempty"`
|
|
Kind string `json:"kind,omitempty"`
|
|
Category string `json:"category,omitempty"`
|
|
Status string `json:"status,omitempty"`
|
|
Title string `json:"title"`
|
|
CreatedAt time.Time `json:"createdAt"`
|
|
UpdatedAt time.Time `json:"updatedAt"`
|
|
Revision int64 `json:"revision,omitempty"`
|
|
SaveAudit *CanvasSaveAudit `json:"-"`
|
|
}
|
|
|
|
type CanvasSaveAudit struct {
|
|
NodesBefore int
|
|
NodesAfter int
|
|
}
|
|
|
|
func canvasNodeCount(payload string) int {
|
|
var document struct {
|
|
Nodes []json.RawMessage `json:"nodes"`
|
|
}
|
|
_ = json.Unmarshal([]byte(payload), &document)
|
|
return len(document.Nodes)
|
|
}
|
|
|
|
type UserDataSnapshot struct {
|
|
Assets []json.RawMessage `json:"assets"`
|
|
Projects []json.RawMessage `json:"projects"`
|
|
}
|
|
|
|
func (s *Service) UserDataSnapshot(userID string) (UserDataSnapshot, error) {
|
|
assets, err := s.UserAssets(userID)
|
|
if err != nil {
|
|
return UserDataSnapshot{}, err
|
|
}
|
|
projects, err := s.UserCanvasProjects(userID)
|
|
if err != nil {
|
|
return UserDataSnapshot{}, err
|
|
}
|
|
return UserDataSnapshot{Assets: assets, Projects: projects}, nil
|
|
}
|
|
|
|
func (s *Service) UserAssetSummaries(userID string) ([]UserDataSummary, error) {
|
|
assets, err := s.repo.AssetSummaries(userID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
result := make([]UserDataSummary, 0, len(assets))
|
|
for _, asset := range assets {
|
|
result = append(result, UserDataSummary{ID: asset.ID, FolderID: asset.FolderID, Kind: asset.Kind, Category: string(asset.Category), Status: string(asset.Status), Title: asset.Title, CreatedAt: asset.CreatedAt, UpdatedAt: asset.UpdatedAt})
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (s *Service) UserAsset(userID string, id string) (json.RawMessage, error) {
|
|
asset, err := s.repo.AssetForUser(userID, id)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return ClientAssetPayload(*asset), nil
|
|
}
|
|
|
|
func (s *Service) UpsertUserAsset(userID string, raw json.RawMessage) (UserDataSummary, error) {
|
|
asset, err := AssetFromJSON(userID, raw)
|
|
if err != nil {
|
|
return UserDataSummary{}, err
|
|
}
|
|
err = s.host.WithStorageLock(func() error {
|
|
if asset.FolderID != "" {
|
|
if _, err := s.repo.AssetFolderForUser(userID, asset.FolderID); err != nil {
|
|
if errors.Is(err, gorm.ErrRecordNotFound) {
|
|
return kernel.BadAuthRequest("素材分类不存在")
|
|
}
|
|
return err
|
|
}
|
|
}
|
|
existing, existingErr := s.repo.AssetForUser(userID, asset.ID)
|
|
if existingErr != nil && !errors.Is(existingErr, gorm.ErrRecordNotFound) {
|
|
return existingErr
|
|
}
|
|
if existing != nil && existing.PayloadJSON != asset.PayloadJSON {
|
|
if err := s.ValidateAssetCanvasReferences(userID, asset); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
existingBytes := int64(0)
|
|
if existing != nil {
|
|
existingBytes = int64(len([]byte(existing.PayloadJSON)))
|
|
}
|
|
if err := s.host.StructuredQuota(userID, "asset", errors.Is(existingErr, gorm.ErrRecordNotFound), int64(len(raw))-existingBytes); err != nil {
|
|
return err
|
|
}
|
|
if err := s.repo.UpsertAsset(&asset); err != nil {
|
|
return err
|
|
}
|
|
if existingErr != nil {
|
|
s.host.RecordActivity(userID, "asset", 1)
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return UserDataSummary{}, err
|
|
}
|
|
return UserDataSummary{ID: asset.ID, FolderID: asset.FolderID, Kind: asset.Kind, Category: string(asset.Category), Status: string(asset.Status), Title: asset.Title, CreatedAt: asset.CreatedAt, UpdatedAt: asset.UpdatedAt}, nil
|
|
}
|
|
|
|
func (s *Service) DeleteUserAsset(userID string, id string) error {
|
|
return s.host.WithStorageLock(func() error {
|
|
return s.host.DeleteUserAssetWithResources(userID, id, false)
|
|
})
|
|
}
|
|
|
|
func (s *Service) PurgeUserAsset(userID string, id string) error {
|
|
return s.PurgeUserAssets(userID, []string{id})
|
|
}
|
|
|
|
func (s *Service) PurgeUserAssets(userID string, ids []string) error {
|
|
return s.host.WithStorageLock(func() error {
|
|
return s.host.PurgeUserAssetsWithResources(userID, ids)
|
|
})
|
|
}
|
|
|
|
func (s *Service) UserAssets(userID string) ([]json.RawMessage, error) {
|
|
assets, err := s.repo.Assets(userID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
result := make([]json.RawMessage, 0, len(assets))
|
|
for _, asset := range assets {
|
|
if payload := ClientAssetPayload(asset); len(payload) > 0 {
|
|
result = append(result, payload)
|
|
}
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (s *Service) ReplaceUserAssets(userID string, req AssetsSyncRequest) ([]json.RawMessage, error) {
|
|
assets := make([]model.Asset, 0, len(req.Assets))
|
|
var totalBytes int64
|
|
for _, raw := range req.Assets {
|
|
item, err := AssetFromJSON(userID, raw)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
assets = append(assets, item)
|
|
totalBytes += int64(len(raw))
|
|
}
|
|
err := s.host.WithStorageLock(func() error {
|
|
if err := s.ValidateAssetReplacementCanvasReferences(userID, assets); err != nil {
|
|
return err
|
|
}
|
|
if err := s.host.StructuredReplacementQuota(userID, "asset", len(assets), totalBytes); err != nil {
|
|
return err
|
|
}
|
|
if err := s.repo.ReplaceAssets(userID, assets); err != nil {
|
|
return err
|
|
}
|
|
if len(assets) > 0 {
|
|
s.host.RecordActivity(userID, "asset", len(assets))
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return s.UserAssets(userID)
|
|
}
|
|
|
|
func (s *Service) UserCanvasProjects(userID string) ([]json.RawMessage, error) {
|
|
projects, err := s.repo.CanvasProjects(userID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
result := make([]json.RawMessage, 0, len(projects))
|
|
for _, project := range projects {
|
|
if strings.TrimSpace(project.PayloadJSON) != "" {
|
|
payload, err := canvasProjectPayload(project)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
result = append(result, payload)
|
|
}
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (s *Service) UserCanvasProjectSummaries(userID string) ([]UserDataSummary, error) {
|
|
projects, err := s.repo.CanvasProjectSummaries(userID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
result := make([]UserDataSummary, 0, len(projects))
|
|
for _, project := range projects {
|
|
result = append(result, UserDataSummary{ID: project.ID, Title: project.Title, CreatedAt: project.CreatedAt, UpdatedAt: project.UpdatedAt, Revision: project.Revision})
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (s *Service) UserCanvasProjectMetadata(userID string, id string) (*model.CanvasProject, error) {
|
|
return s.repo.CanvasProjectMetadataForUser(userID, id)
|
|
}
|
|
|
|
func (s *Service) UserCanvasProject(userID string, id string) (json.RawMessage, error) {
|
|
project, err := s.repo.CanvasProjectForUser(userID, id)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return canvasProjectPayload(*project)
|
|
}
|
|
|
|
func (s *Service) UpsertUserCanvasProject(userID string, raw json.RawMessage) (UserDataSummary, error) {
|
|
return s.upsertUserCanvasProjectWithHistory(userID, raw, "automatic")
|
|
}
|
|
|
|
func (s *Service) upsertUserCanvasProjectWithHistory(userID string, raw json.RawMessage, reason string) (UserDataSummary, error) {
|
|
var version struct {
|
|
Revision *int64 `json:"revision"`
|
|
}
|
|
if err := json.Unmarshal(raw, &version); err != nil {
|
|
return UserDataSummary{}, kernel.BadAuthRequest("画布版本格式错误")
|
|
}
|
|
if version.Revision == nil {
|
|
return UserDataSummary{}, kernel.NewAppError(http.StatusPreconditionRequired, "缺少画布版本，请保留本地草稿后重新加载画布")
|
|
}
|
|
if *version.Revision < 0 || *version.Revision >= 9007199254740991 {
|
|
return UserDataSummary{}, kernel.BadAuthRequest("画布版本无效")
|
|
}
|
|
project, err := canvasProjectFromJSON(userID, raw)
|
|
if err != nil {
|
|
return UserDataSummary{}, err
|
|
}
|
|
var audit CanvasSaveAudit
|
|
err = s.host.WithStorageLock(func() error {
|
|
if err := s.ValidateCanvasMediaAssets(userID, raw); err != nil {
|
|
return err
|
|
}
|
|
existing, existingErr := s.repo.CanvasProjectForUser(userID, project.ID)
|
|
if existingErr != nil && !errors.Is(existingErr, gorm.ErrRecordNotFound) {
|
|
return existingErr
|
|
}
|
|
existingBytes := int64(0)
|
|
project.Revision = *version.Revision
|
|
project.UpdatedAt = time.Now().UTC()
|
|
if existing != nil {
|
|
existingBytes = int64(len([]byte(existing.PayloadJSON)))
|
|
project.CreatedAt = existing.CreatedAt
|
|
}
|
|
if (existing == nil && project.Revision != 0) || (existing != nil && project.Revision != existing.Revision) {
|
|
return canvasRevisionConflict()
|
|
}
|
|
var payload map[string]json.RawMessage
|
|
if err := json.Unmarshal(raw, &payload); err != nil {
|
|
return err
|
|
}
|
|
delete(payload, "revision")
|
|
delete(payload, "remoteContentHash")
|
|
payload["viewport"] = json.RawMessage(`{"x":0,"y":0,"k":1}`)
|
|
if existing != nil {
|
|
var previous map[string]json.RawMessage
|
|
if json.Unmarshal([]byte(existing.PayloadJSON), &previous) == nil && previous["viewport"] != nil {
|
|
payload["viewport"] = previous["viewport"]
|
|
}
|
|
}
|
|
payload["createdAt"], _ = json.Marshal(project.CreatedAt)
|
|
payload["updatedAt"], _ = json.Marshal(project.UpdatedAt)
|
|
cleaned, err := json.Marshal(payload)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
project.PayloadJSON = string(cleaned)
|
|
if err := s.host.StructuredQuota(userID, "canvas", errors.Is(existingErr, gorm.ErrRecordNotFound), int64(len(cleaned))-existingBytes); err != nil {
|
|
return err
|
|
}
|
|
if err := SaveDocumentWithHistory(s.repo, existing, &project, reason); err != nil {
|
|
if errors.Is(err, repository.ErrCanvasRevisionConflict) {
|
|
return canvasRevisionConflict()
|
|
}
|
|
var missing *repository.CanvasHistoryResourceMissingError
|
|
if errors.As(err, &missing) {
|
|
return canvasResourcesMissingError(missing.References)
|
|
}
|
|
return err
|
|
}
|
|
audit.NodesAfter = canvasNodeCount(project.PayloadJSON)
|
|
if existing != nil {
|
|
audit.NodesBefore = canvasNodeCount(existing.PayloadJSON)
|
|
}
|
|
if existingErr != nil || existing.PayloadJSON != project.PayloadJSON || existing.Title != project.Title {
|
|
s.host.RecordActivity(userID, "canvas", 1)
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return UserDataSummary{}, err
|
|
}
|
|
return UserDataSummary{ID: project.ID, Title: project.Title, CreatedAt: project.CreatedAt, UpdatedAt: project.UpdatedAt, Revision: project.Revision, SaveAudit: &audit}, nil
|
|
}
|
|
|
|
func (s *Service) DeleteUserCanvasProject(userID string, id string) error {
|
|
return s.repo.DeleteCanvasProject(userID, id)
|
|
}
|
|
|
|
func AssetFromJSON(userID string, raw json.RawMessage) (model.Asset, error) {
|
|
if err := ValidateSyncedPayload(raw, "素材"); err != nil {
|
|
return model.Asset{}, err
|
|
}
|
|
var payload struct {
|
|
ID string `json:"id"`
|
|
FolderID string `json:"folderId"`
|
|
Kind string `json:"kind"`
|
|
Category string `json:"category"`
|
|
Status string `json:"status"`
|
|
PrimaryVersionID string `json:"primaryVersionId"`
|
|
Title string `json:"title"`
|
|
CreatedAt string `json:"createdAt"`
|
|
UpdatedAt string `json:"updatedAt"`
|
|
}
|
|
if err := json.Unmarshal(raw, &payload); err != nil {
|
|
return model.Asset{}, kernel.BadAuthRequest("素材数据格式错误")
|
|
}
|
|
now := time.Now()
|
|
createdAt := parseClientTime(payload.CreatedAt, now)
|
|
updatedAt := parseClientTime(payload.UpdatedAt, createdAt)
|
|
id := strings.TrimSpace(payload.ID)
|
|
if id == "" {
|
|
id = kernel.NewID()
|
|
}
|
|
if utf8.RuneCountInString(id) > model.AssetIDMaxLength {
|
|
return model.Asset{}, kernel.BadAuthRequest("素材 ID 不能超过 80 个字符")
|
|
}
|
|
primaryVersionID := strings.TrimSpace(payload.PrimaryVersionID)
|
|
if utf8.RuneCountInString(primaryVersionID) > 36 {
|
|
return model.Asset{}, kernel.BadAuthRequest("素材主版本 ID 不能超过 36 个字符")
|
|
}
|
|
if err := validateUserAssetDocument(raw); err != nil {
|
|
return model.Asset{}, err
|
|
}
|
|
category := model.NormalizeAssetCategory(model.AssetCategory(payload.Category), payload.Kind)
|
|
status := model.AssetVersionStatus(strings.TrimSpace(payload.Status))
|
|
if status == "" {
|
|
status = model.AssetVersionStatusConfirmed
|
|
}
|
|
return model.Asset{
|
|
ID: id,
|
|
UserID: userID,
|
|
FolderID: strings.TrimSpace(payload.FolderID),
|
|
Kind: strings.TrimSpace(payload.Kind),
|
|
Category: category,
|
|
Status: status,
|
|
PrimaryVersionID: primaryVersionID,
|
|
Title: strings.TrimSpace(payload.Title),
|
|
PayloadJSON: string(raw),
|
|
CreatedAt: createdAt,
|
|
UpdatedAt: updatedAt,
|
|
}, nil
|
|
}
|
|
|
|
func canvasProjectFromJSON(userID string, raw json.RawMessage) (model.CanvasProject, error) {
|
|
if err := ValidateSyncedPayload(raw, "画布"); err != nil {
|
|
return model.CanvasProject{}, err
|
|
}
|
|
var payload struct {
|
|
ID string `json:"id"`
|
|
Title string `json:"title"`
|
|
ProjectID string `json:"projectId"`
|
|
CreatedAt string `json:"createdAt"`
|
|
UpdatedAt string `json:"updatedAt"`
|
|
}
|
|
if err := json.Unmarshal(raw, &payload); err != nil {
|
|
return model.CanvasProject{}, kernel.BadAuthRequest("画布数据格式错误")
|
|
}
|
|
now := time.Now()
|
|
createdAt := parseClientTime(payload.CreatedAt, now)
|
|
updatedAt := parseClientTime(payload.UpdatedAt, createdAt)
|
|
id := strings.TrimSpace(payload.ID)
|
|
if id == "" {
|
|
id = kernel.NewID()
|
|
}
|
|
return model.CanvasProject{
|
|
ID: id,
|
|
UserID: userID,
|
|
ProjectID: strings.TrimSpace(payload.ProjectID),
|
|
Title: strings.TrimSpace(payload.Title),
|
|
PayloadJSON: string(raw),
|
|
CreatedAt: createdAt,
|
|
UpdatedAt: updatedAt,
|
|
}, nil
|
|
}
|
|
|
|
func ValidateSyncedPayload(raw json.RawMessage, label string) error {
|
|
if len(raw) > 4<<20 {
|
|
return kernel.BadAuthRequest(label + "数据超过 4MB，请先把媒体文件保存到资源存储")
|
|
}
|
|
var payload interface{}
|
|
if err := json.Unmarshal(raw, &payload); err == nil && ContainsInlineMediaDataURL(payload) {
|
|
return kernel.BadAuthRequest(label + "数据包含内嵌媒体，请先上传到资源存储")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// 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。
|
|
func ContainsInlineMediaDataURL(value interface{}) bool {
|
|
switch item := value.(type) {
|
|
case string:
|
|
text := strings.ToLower(strings.TrimSpace(item))
|
|
return strings.HasPrefix(text, "data:image/") || strings.HasPrefix(text, "data:video/") || strings.HasPrefix(text, "data:audio/")
|
|
case []interface{}:
|
|
for _, child := range item {
|
|
if ContainsInlineMediaDataURL(child) {
|
|
return true
|
|
}
|
|
}
|
|
case map[string]interface{}:
|
|
for _, child := range item {
|
|
if ContainsInlineMediaDataURL(child) {
|
|
return true
|
|
}
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
func parseClientTime(value string, fallback time.Time) time.Time {
|
|
value = strings.TrimSpace(value)
|
|
if value == "" {
|
|
return fallback
|
|
}
|
|
if parsed, err := time.Parse(time.RFC3339Nano, value); err == nil {
|
|
return parsed
|
|
}
|
|
return fallback
|
|
}
|