115 lines
3.5 KiB
Go
115 lines
3.5 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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"infinite-canvas/backend/internal/model"
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"gorm.io/gorm"
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)
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const drawingEngineSettingKey = "drawing_engine"
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const (
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DrawingEngineTldraw = "tldraw"
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DrawingEngineExcalidraw = "excalidraw"
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)
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type DrawingEngineSetting struct {
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DefaultEngine string `json:"defaultEngine"`
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}
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type PublicDrawingEngineSetting struct {
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DrawingEngineSetting
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Configured bool `json:"configured"`
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UpdatedBy string `json:"updatedBy,omitempty"`
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CreatedAt time.Time `json:"createdAt,omitempty"`
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UpdatedAt time.Time `json:"updatedAt,omitempty"`
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}
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func defaultDrawingEngineSetting() DrawingEngineSetting {
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// 新部署默认使用真正开源的编辑器；历史节点没有引擎字段时仍由前端识别为 tldraw。
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return DrawingEngineSetting{DefaultEngine: DrawingEngineExcalidraw}
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}
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func (s *Service) DrawingEngineSetting() (*PublicDrawingEngineSetting, error) {
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setting, value, err := s.readDrawingEngineSetting()
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if err != nil {
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return nil, err
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}
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return publicDrawingEngineSetting(setting, value), nil
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}
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func (s *Service) AdminDrawingEngineSetting(actor *model.User) (*PublicDrawingEngineSetting, 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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return s.DrawingEngineSetting()
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}
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func (s *Service) UpdateDrawingEngineSetting(actor *model.User, value DrawingEngineSetting) (*PublicDrawingEngineSetting, 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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if err := validateDrawingEngineSetting(value); err != nil {
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return nil, err
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}
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current, before, err := s.readDrawingEngineSetting()
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if err != nil {
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return nil, err
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}
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encoded, err := json.Marshal(value)
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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: drawingEngineSettingKey, ValueJSON: string(encoded), UpdatedBy: actor.ID}
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if current != nil {
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setting.CreatedAt = current.CreatedAt
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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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if err := s.appendAdminAudit(actor, "drawing_engine.update", "system_setting", drawingEngineSettingKey, "更新默认绘图工具", map[string]any{"before": before, "after": value}); err != nil {
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return nil, err
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}
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return publicDrawingEngineSetting(&setting, value), nil
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}
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func (s *Service) readDrawingEngineSetting() (*model.SystemSetting, DrawingEngineSetting, error) {
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setting, err := s.repo.SystemSetting(drawingEngineSettingKey)
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, defaultDrawingEngineSetting(), nil
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}
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if err != nil {
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return nil, DrawingEngineSetting{}, err
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}
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value := DrawingEngineSetting{}
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if strings.TrimSpace(setting.ValueJSON) == "" || json.Unmarshal([]byte(setting.ValueJSON), &value) != nil {
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return nil, DrawingEngineSetting{}, errors.New("绘图工具配置格式无效")
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}
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if err := validateDrawingEngineSetting(value); err != nil {
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return nil, DrawingEngineSetting{}, err
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}
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return setting, value, nil
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}
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func validateDrawingEngineSetting(value DrawingEngineSetting) error {
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if value.DefaultEngine != DrawingEngineTldraw && value.DefaultEngine != DrawingEngineExcalidraw {
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return BadAuthRequest("默认绘图工具必须是 tldraw 或 Excalidraw")
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}
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return nil
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}
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func publicDrawingEngineSetting(setting *model.SystemSetting, value DrawingEngineSetting) *PublicDrawingEngineSetting {
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result := &PublicDrawingEngineSetting{DrawingEngineSetting: value, Configured: setting != nil}
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if setting != nil {
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result.UpdatedBy = setting.UpdatedBy
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result.CreatedAt = setting.CreatedAt
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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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