75 lines
2.2 KiB
TypeScript
75 lines
2.2 KiB
TypeScript
import type { SceneGraph } from '@pascal-app/core/clone-scene-graph'
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import { syncAutoStairOpenings } from '@pascal-app/core/stair-openings'
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import type { SceneOperations } from '../operations'
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import { SceneVersionConflictError } from '../storage/types'
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import { ErrorCode, throwMcpError } from './errors'
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export function syncDerivedStairOpenings(operations: SceneOperations): number {
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const updates = syncAutoStairOpenings(operations.getNodes())
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if (updates.length === 0) return 0
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operations.applyPatch(
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updates.map((update) => ({
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op: 'update' as const,
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id: update.id,
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data: update.data,
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})),
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)
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return updates.length
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}
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/**
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* Persist the bridge's current graph to the active scene and append a live
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* event for browser subscribers. No-ops when the MCP session is not currently
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* bound to a saved scene.
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*/
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export async function publishLiveSceneSnapshot(
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operations: SceneOperations,
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kind: string,
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): Promise<void> {
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syncDerivedStairOpenings(operations)
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const active = operations.getActiveScene()
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if (!active || !operations.canAppendSceneEvents) return
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const graph = operations.exportSceneGraph()
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try {
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const meta = await operations.saveScene({
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id: active.id,
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name: active.name,
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projectId: active.projectId,
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ownerId: active.ownerId,
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thumbnailUrl: active.thumbnailUrl,
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graph,
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expectedVersion: active.version,
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})
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operations.setActiveScene(meta)
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await operations.appendSceneEvent({
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sceneId: meta.id,
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version: meta.version,
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kind,
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graph,
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})
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} catch (error) {
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if (error instanceof SceneVersionConflictError) {
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throwMcpError(ErrorCode.InvalidRequest, 'live_sync_version_conflict', {
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sceneId: active.id,
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expectedVersion: active.version,
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})
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}
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const message = error instanceof Error ? error.message : String(error)
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throwMcpError(ErrorCode.InternalError, `live_sync_failed: ${message}`)
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}
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}
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export async function appendLiveSceneEvent(
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operations: SceneOperations,
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sceneId: string,
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version: number,
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kind: string,
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graph: SceneGraph,
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): Promise<void> {
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if (!operations.canAppendSceneEvents) return
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await operations.appendSceneEvent({ sceneId, version, kind, graph })
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}
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