3D シーンビューポートの埋め込み

https://app.nodaro.ai/embed/scene3d?parentOrigin=<origin>&channel=<uuid>

{
  type: "nodaro:scene3d:state",
  version: 1 | 2,                     // 2 enables baked (version 2) scenes, see below
  channel: string,                    // must equal the channel in the URL
  scenePlan: Scene3DPlan,             // required, validated
  selectedObjectIds?: string[],       // default []
  lockedObjectIds?: string[],         // default []
  history?: Scene3DRevisionEntry[],   // default []
  pendingPlan?: Scene3DPlan,          // default absent
  isGenerating?: boolean,             // default false
  readOnly?: boolean,                 // default TRUE
}

{
  revisionId: string,                     // UUID
  scenePlan: Scene3DPlan,                 // validated like the active plan
  source: "generate" | "edit" | "manual" | "upstream",
  createdAt: string,                      // your timestamp, shown as it is
  changeSummary?: string,
  context?: { prompt?: string },          // only prompt is kept
}

{
  type: "nodaro:scene3d:ready",
  version: 1,                              // the baseline, always 1
  channel: string,
  protocolVersions: [1, 2],                // every version this frame accepts
  capabilities: {
    assetTransport: true,                  // it can ask you for asset bytes
    sceneSchemaVersions: [1, 2],           // the scene versions it can draw
  },
}

{
  type: "nodaro:scene3d:event",
  version: 1 | 2,                     // 2 ONLY for edit-operations
  channel: string,
  expectedRevisionId: string | null,
  event:
    | { kind: "plan", plan: Scene3DPlan, changeSummary: string }
    | { kind: "selection", objectIds: string[] }
    | { kind: "locks", objectIds: string[] }
    | { kind: "restore", revisionId: string }
    | { kind: "resolve-pending", adopt: boolean }
    // version 2 scenes only, see "Baked scenes" below
    | { kind: "edit-operations", operations: Scene3DV2EditOperation[], expectedContentHash: string },
}

// frame to parent
{
  type: "nodaro:scene3d:asset-request",
  version: 2,
  channel: string,
  requestId: string,                 // new for each request; send it back unchanged
  revisionId: string,                // plan.revisionId
  assetId: string,                   // an opaque id from plan.assets
  kind: "glb" | "camera-track-json",
  byteLength: number,                // what the manifest declares
  sha256: string,                    // 64 lower-case hex characters
}

// parent to frame, success
{
  type: "nodaro:scene3d:asset-response",
  version: 2,
  channel: string,
  requestId: string,                 // echoed
  revisionId: string,                // echoed
  assetId: string,                   // echoed
  ok: true,
  bytes: ArrayBuffer,                // a structured clone: NOT a URL, NOT base64
}

// parent to frame, failure
{ /* same envelope */ ok: false, error: "short reason" }

import { createClient } from "@nodaro/sdk"
import type { Scene3DPlanV2 } from "@nodaro/shared"

const client = createClient({ baseUrl: "https://app.nodaro.ai", auth: myAuth })

/** The plan you sent most recently. */
let active: Scene3DPlanV2

window.addEventListener("message", async (event) => {
  if (event.source !== iframe.contentWindow) return
  if (event.origin !== NODARO_ORIGIN) return
  const data = event.data
  if (data?.type !== "nodaro:scene3d:asset-request") return
  if (data.channel !== channel || data.version !== 2) return

  const reply = (body: Record<string, unknown>) =>
    iframe.contentWindow?.postMessage(
      {
        type: "nodaro:scene3d:asset-response",
        version: 2,
        channel,
        requestId: data.requestId,
        revisionId: data.revisionId,
        assetId: data.assetId,
        ...body,
      },
      NODARO_ORIGIN,
    )

  // 1. Authorize: the asset must belong to the plan we sent, and the request
  //    must name the revision that plan pins the bytes to.
  const asset = active.assets.find((a) => a.assetId === data.assetId)
  const pinnedTo = active.revisionId
  if (
    !asset ||
    data.revisionId !== pinnedTo ||
    asset.byteLength !== data.byteLength ||
    asset.sha256 !== data.sha256
  ) {
    reply({ ok: false, error: "unknown asset" })
    return
  }

  // 2. Fetch with OUR session, and send the bytes, never the URL or the token.
  try {
    const bytes = await client.scene3d.assetBytes(pinnedTo, asset)
    reply({ ok: true, bytes })
  } catch (error) {
    reply({ ok: false, error: error instanceof Error ? error.message : "fetch failed" })
  }
})

// event.event
{
  kind: "edit-operations",
  operations: [
    { op: "set-override", override: { kind: "entity-transform", entityId: "hero", space: "local", position: [3, 0.5, 0] } },
  ],
  expectedContentHash: "<64 hex characters>",   // plan.provenance.contentHash
}

import { applyScene3DV2EditOperations } from "@nodaro/shared"

const result = await applyScene3DV2EditOperations(active, message.event.operations, {
  expectedRevisionId: message.expectedRevisionId,          // from the envelope
  expectedContentHash: message.event.expectedContentHash,
  lockedObjectIds,
})
if (!result.ok) return showError(result.message)           // stale_revision, locked, ...

import { scene3DPlanSchema, type Scene3DPlan } from "@nodaro/shared"

const NODARO_ORIGIN = "https://app.nodaro.ai"
const channel = crypto.randomUUID()

const iframe = document.createElement("iframe")
iframe.src =
  `${NODARO_ORIGIN}/embed/scene3d` +
  `?parentOrigin=${encodeURIComponent(window.location.origin)}` +
  `&channel=${channel}`
iframe.allow = "" // the frame needs no permissions

let active: Scene3DPlan = initialPlan                // your current revision
let history: RevisionEntry[] = []                    // newest last, at most 12

function pushState() {
  iframe.contentWindow?.postMessage(
    {
      type: "nodaro:scene3d:state",
      version: 1,
      channel,
      scenePlan: active,
      selectedObjectIds: selection,
      lockedObjectIds: locks,
      history: history.slice(-12),
      readOnly: false,          // leave it out and the frame is view-only
    },
    NODARO_ORIGIN,              // never "*"
  )
}

function onMessage(e: MessageEvent) {
  if (e.source !== iframe.contentWindow) return
  if (e.origin !== NODARO_ORIGIN) return
  const data = e.data
  if (!data || typeof data !== "object") return
  if (data.channel !== channel || data.version !== 1) return

  if (data.type === "nodaro:scene3d:ready") {
    pushState()                 // the frame listens: send the truth
    return
  }
  if (data.type !== "nodaro:scene3d:event") return

  // The action was computed from a revision we may have replaced already.
  const mutates = data.event.kind !== "selection"
  if (mutates && data.expectedRevisionId !== active.revisionId) return

  switch (data.event.kind) {
    case "selection":
      selection = data.event.objectIds
      return                    // no new state needed; the frame shows it already
    case "locks":
      locks = data.event.objectIds
      break
    case "plan": {
      // Trust nothing you save.
      const parsed = scene3DPlanSchema.safeParse(data.event.plan)
      if (!parsed.success) return
      active = parsed.data
      history = [...history, {
        revisionId: active.revisionId,
        scenePlan: active,
        source: "manual",
        changeSummary: data.event.changeSummary,
        createdAt: new Date().toISOString(),
      }].slice(-12)
      break
    }
    case "restore": {
      const entry = history.find((h) => h.revisionId === data.event.revisionId)
      if (!entry) return
      active = entry.scenePlan
      break
    }
    case "resolve-pending":
      active = data.event.adopt ? pending! : active
      pending = undefined
      break
  }
  pushState()
}

window.addEventListener("message", onMessage)
document.body.appendChild(iframe)

// On teardown:
//   window.removeEventListener("message", onMessage)
//   iframe.remove()