359 lines
11 KiB
Go
359 lines
11 KiB
Go
package service
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import (
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"strings"
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"time"
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"infinite-canvas/backend/internal/model"
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"gorm.io/gorm"
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)
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const (
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libTVSettingKey = "libtv"
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libTVDetailURL = "https://api.liblib.tv/api/canvas/project/detail"
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libTVMaxResponseBytes = 8 << 20
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)
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type LibTVSettingRequest struct {
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Enabled bool `json:"enabled"`
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Token string `json:"token"`
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ClearToken bool `json:"clearToken"`
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}
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type PublicLibTVSetting struct {
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Enabled bool `json:"enabled"`
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HasToken bool `json:"hasToken"`
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UpdatedAt time.Time `json:"updatedAt,omitempty"`
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}
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type libTVSettingValue struct {
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Enabled bool `json:"enabled"`
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Token string `json:"token"`
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}
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type LibTVImportRequest struct {
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UUID string `json:"uuid"`
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}
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type LibTVImportResult struct {
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BatchID string `json:"batchId"`
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BatchCreatedAt time.Time `json:"batchCreatedAt"`
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ProjectUUID string `json:"projectUuid"`
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ProjectName string `json:"projectName"`
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Nodes []LibTVCanvasNode `json:"nodes"`
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Connections []LibTVCanvasConnection `json:"connections"`
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ImportedNodeCount int `json:"importedNodeCount"`
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ImportedConnectionCount int `json:"importedConnectionCount"`
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SkippedNodes []LibTVImportIssue `json:"skippedNodes"`
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SkippedConnections []LibTVImportIssue `json:"skippedConnections"`
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Warnings []LibTVImportWarning `json:"warnings"`
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MultiResultNodeCount int `json:"multiResultNodeCount"`
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StaleNodeCount int `json:"staleNodeCount"`
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ReusedFailedNodeCount int `json:"reusedFailedNodeCount"`
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PlaceholderNodeCount int `json:"placeholderNodeCount"`
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ConvertedSpecialCount int `json:"convertedSpecialCount"`
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}
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type LibTVCanvasNode struct {
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ID string `json:"id"`
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Type string `json:"type"`
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Title string `json:"title"`
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X float64 `json:"x"`
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Y float64 `json:"y"`
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Width float64 `json:"width"`
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Height float64 `json:"height"`
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Content string `json:"content"`
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Prompt string `json:"prompt,omitempty"`
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Model string `json:"model,omitempty"`
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NaturalWidth int `json:"naturalWidth,omitempty"`
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NaturalHeight int `json:"naturalHeight,omitempty"`
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DurationMs int64 `json:"durationMs,omitempty"`
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MimeType string `json:"mimeType,omitempty"`
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Status string `json:"status,omitempty"`
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ErrorDetails string `json:"errorDetails,omitempty"`
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Metadata LibTVImportMetadata `json:"metadata"`
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}
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type LibTVImportMetadata struct {
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Provider string `json:"provider"`
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ProjectUUID string `json:"projectUuid"`
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NodeKey string `json:"nodeKey"`
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BatchID string `json:"batchId"`
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SourceType string `json:"sourceType,omitempty"`
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StyleAssetUUID string `json:"styleAssetUuid,omitempty"`
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StyleVersionUUID string `json:"styleVersionUuid,omitempty"`
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StyleName string `json:"styleName,omitempty"`
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}
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type LibTVCanvasConnection struct {
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ID string `json:"id"`
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FromNodeID string `json:"fromNodeId"`
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ToNodeID string `json:"toNodeId"`
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}
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type LibTVImportIssue struct {
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ID string `json:"id,omitempty"`
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Name string `json:"name,omitempty"`
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Reason string `json:"reason"`
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}
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type LibTVImportWarning struct {
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ID string `json:"id,omitempty"`
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Message string `json:"message"`
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}
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type libTVEnvelope struct {
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Code int `json:"code"`
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Data json.RawMessage `json:"data"`
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Msg string `json:"msg"`
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}
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type libTVDetail struct {
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ProjectMeta struct {
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UUID string `json:"uuid"`
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Name string `json:"name"`
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Effective struct {
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CanRead bool `json:"canRead"`
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CanCopy bool `json:"canCopy"`
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} `json:"effective"`
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} `json:"projectMeta"`
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NodeList []libTVRawNode `json:"nodeList"`
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ConnectionList []libTVRawConnection `json:"connectionList"`
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}
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type libTVRawNode struct {
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NodeKey string `json:"nodeKey"`
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Name string `json:"name"`
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Data string `json:"data"`
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Position struct {
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X string `json:"positionX"`
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Y string `json:"positionY"`
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} `json:"position"`
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Measured struct {
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Width string `json:"width"`
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Height string `json:"height"`
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} `json:"measured"`
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TaskInfo struct {
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Status int `json:"status"`
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FailedReason string `json:"failedReason"`
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} `json:"taskInfo"`
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IsStale bool `json:"isStale"`
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}
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type libTVRawConnection struct {
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ConnectionID string `json:"connectionId"`
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Source string `json:"source"`
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Target string `json:"target"`
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}
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type libTVNodeData struct {
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Type string `json:"type"`
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URL []string `json:"url"`
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CoverURL string `json:"coverUrl"`
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StyleAssetUUID string `json:"styleAssetUuid"`
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StyleVersionUUID string `json:"styleVersionUuid"`
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StyleName string `json:"styleName"`
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Params map[string]any `json:"params"`
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TaskInfo struct {
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Status int `json:"status"`
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FailedReason string `json:"failedReason"`
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} `json:"taskInfo"`
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IsStale bool `json:"isStale"`
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ResourceMeta struct {
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Items []struct {
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Width int `json:"width"`
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Height int `json:"height"`
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DurationSec float64 `json:"durationSec"`
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} `json:"items"`
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} `json:"_resourceMeta"`
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}
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func (s *Service) AdminLibTVSetting(actor *model.User) (*PublicLibTVSetting, error) {
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if err := s.RequireAdmin(actor); err != nil {
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return nil, err
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}
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setting, value, err := s.readLibTVSetting()
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if err != nil {
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return nil, err
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}
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return publicLibTVSetting(setting, value), nil
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}
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func (s *Service) UpdateLibTVSetting(actor *model.User, req LibTVSettingRequest) (*PublicLibTVSetting, error) {
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if err := s.RequireAdmin(actor); err != nil {
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return nil, err
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}
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_, current, err := s.readLibTVSetting()
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if err != nil {
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return nil, err
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}
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token := strings.TrimSpace(req.Token)
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if req.ClearToken {
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token = ""
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} else if token == "" {
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token = current.Token
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}
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if req.Enabled && token == "" {
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return nil, BadAuthRequest("启用 LibTV 前请先配置 Token")
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}
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protected, err := s.encryptSettingSecret(token)
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if err != nil {
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return nil, err
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}
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valueJSON, err := json.Marshal(libTVSettingValue{Enabled: req.Enabled, Token: protected})
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if err != nil {
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return nil, err
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}
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setting := &model.SystemSetting{Key: libTVSettingKey, ValueJSON: string(valueJSON), UpdatedBy: actor.ID}
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if existing, lookupErr := s.repo.SystemSetting(libTVSettingKey); lookupErr == nil {
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setting.CreatedAt = existing.CreatedAt
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} else if !errors.Is(lookupErr, gorm.ErrRecordNotFound) {
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return nil, lookupErr
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}
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if err := s.repo.SaveSystemSetting(setting); err != nil {
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return nil, err
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}
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return publicLibTVSetting(setting, libTVSettingValue{Enabled: req.Enabled, Token: token}), nil
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}
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func (s *Service) TestLibTV(actor *model.User, projectUUID string) error {
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if actor == nil {
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return Unauthorized("请先登录")
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}
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if err := s.RequireAdmin(actor); err != nil {
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return err
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}
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_, value, err := s.readLibTVSetting()
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if err != nil {
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return err
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}
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if value.Token == "" {
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return BadAuthRequest("尚未配置 LibTV Token")
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}
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_, err = s.fetchLibTVDetail(strings.TrimSpace(projectUUID), value.Token)
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return err
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}
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func (s *Service) ImportLibTV(userID, canvasProjectID, projectUUID string) (*LibTVImportResult, error) {
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userID = strings.TrimSpace(userID)
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canvasProjectID = strings.TrimSpace(canvasProjectID)
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if userID == "" || canvasProjectID == "" {
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return nil, Unauthorized("请先打开已同步的" + s.appearanceBrandName() + "画布")
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}
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if _, err := s.repo.CanvasProjectForUser(userID, canvasProjectID); err != nil {
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return nil, err
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}
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_, value, err := s.readLibTVSetting()
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if err != nil {
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return nil, err
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}
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if !value.Enabled || value.Token == "" {
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return nil, BadAuthRequest("LibTV 尚未启用或未配置 Token")
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}
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detail, err := s.fetchLibTVDetail(strings.TrimSpace(projectUUID), value.Token)
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if err != nil {
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return nil, err
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}
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return adaptLibTVDetail(detail)
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}
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func (s *Service) readLibTVSetting() (*model.SystemSetting, libTVSettingValue, error) {
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setting, err := s.repo.SystemSetting(libTVSettingKey)
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, libTVSettingValue{}, nil
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}
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if err != nil {
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return nil, libTVSettingValue{}, err
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}
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value := libTVSettingValue{}
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if err := json.Unmarshal([]byte(setting.ValueJSON), &value); err != nil {
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return nil, value, errors.New("LibTV 配置格式无效")
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}
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if value.Token != "" {
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plain, err := s.decryptSettingSecret(value.Token)
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if err != nil {
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return nil, value, err
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}
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value.Token = plain
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}
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return setting, value, nil
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}
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func publicLibTVSetting(setting *model.SystemSetting, value libTVSettingValue) *PublicLibTVSetting {
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result := &PublicLibTVSetting{Enabled: value.Enabled, HasToken: strings.TrimSpace(value.Token) != ""}
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if setting != nil {
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result.UpdatedAt = setting.UpdatedAt
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}
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return result
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}
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func (s *Service) fetchLibTVDetail(projectUUID, token string) (*libTVDetail, error) {
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projectUUID = strings.TrimSpace(projectUUID)
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if !isLibTVProjectUUID(projectUUID) {
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return nil, BadAuthRequest("LibTV 画布 UUID 格式无效")
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}
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u, err := url.Parse(libTVDetailURL)
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if err != nil {
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return nil, err
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}
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query := u.Query()
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query.Set("uuid", projectUUID)
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u.RawQuery = query.Encode()
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req, err := http.NewRequest(http.MethodGet, u.String(), nil)
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if err != nil {
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return nil, err
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}
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req.Header.Set("Accept", "application/json")
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req.Header.Set("token", token)
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ApplyDefaultOutboundHeaders(req)
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client := OutboundHTTPClient(20 * time.Second)
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// Token 是 LibTV 专用凭证，禁止重定向以避免自定义请求头被带到其他主机。
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client.CheckRedirect = func(_ *http.Request, _ []*http.Request) error {
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return errors.New("LibTV API 不允许重定向")
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}
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resp, err := client.Do(req)
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if err != nil {
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return nil, errors.New("LibTV 请求失败，请检查网络或 Token")
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}
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defer resp.Body.Close()
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body, err := io.ReadAll(io.LimitReader(resp.Body, libTVMaxResponseBytes+1))
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if err != nil {
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return nil, errors.New("读取 LibTV 响应失败")
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}
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if len(body) > libTVMaxResponseBytes {
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return nil, errors.New("LibTV 响应过大")
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}
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if resp.StatusCode < 200 || resp.StatusCode >= 300 {
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return nil, fmt.Errorf("LibTV 请求失败（HTTP %d）", resp.StatusCode)
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}
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var envelope libTVEnvelope
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if err := json.Unmarshal(body, &envelope); err != nil {
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return nil, errors.New("LibTV 响应格式无效")
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}
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if envelope.Code != 0 {
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msg := strings.TrimSpace(envelope.Msg)
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if msg == "" {
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msg = "LibTV 返回业务错误"
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}
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return nil, errors.New(msg)
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}
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var detail libTVDetail
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if err := json.Unmarshal(envelope.Data, &detail); err != nil {
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return nil, errors.New("LibTV 画布数据格式无效")
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}
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if strings.TrimSpace(detail.ProjectMeta.UUID) == "" {
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detail.ProjectMeta.UUID = projectUUID
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}
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if !detail.ProjectMeta.Effective.CanRead || !detail.ProjectMeta.Effective.CanCopy {
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return nil, errors.New("当前 LibTV 画布不允许复制")
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}
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return &detail, nil
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}
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