65 lines
2.4 KiB
JavaScript
65 lines
2.4 KiB
JavaScript
import {
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clearPowerOffCheckpoint,
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clearUiState,
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loadPowerOffCheckpoint,
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loadUiState,
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savePowerOffCheckpoint,
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saveUiState,
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} from "./opfs-ui-state.mjs";
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const UI_COMMANDS = new Set(["UI_STATE_SAVE", "UI_STATE_LOAD", "UI_STATE_CLEAR"]);
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function object(value) {
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return value !== null && typeof value === "object" && !Array.isArray(value) ? value : {};
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}
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function resultEnvelope(input, payload) {
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return {
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schema_version: 1,
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kind: "UI_STATE_RESULT",
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context_id: input.context_id,
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session_id: input.session_id,
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seq: input.seq,
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operation_id: input.operation_id ?? null,
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payload: { ...payload, command: input.kind, operation_id: input.operation_id ?? null },
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};
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}
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export function isUiStateCommand(input) {
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return UI_COMMANDS.has(input?.kind);
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}
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export async function handleWorkerMessage(session, input) {
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if (isUiStateCommand(input)) {
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// UI cache is a Worker storage service, not a LinuxCNC command. It never
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// consumes the WASM protocol sequence or changes task/motion authority.
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const payload = object(input.payload);
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const options = { contextId: input.context_id, key: payload.key ?? "xyzac-trt" };
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const result = input.kind === "UI_STATE_SAVE"
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? await saveUiState({ ...options, state: payload.state })
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: input.kind === "UI_STATE_LOAD"
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? await loadUiState(options)
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: await clearUiState(options);
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return resultEnvelope(input, result);
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}
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let request = input;
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if (input?.kind === "LOAD_WORKSPACE" && !object(input.payload).recovery_checkpoint) {
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const persisted = await loadPowerOffCheckpoint({ contextId: input.context_id, key: "xyzac-trt" });
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if (persisted.status === "verified" && persisted.checkpoint) request = { ...input, payload: { ...object(input.payload), recovery_checkpoint: persisted.checkpoint } };
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}
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const response = session.accept(request);
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const payload = object(response?.payload);
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if (input?.kind === "POWER" && response?.kind === "COMMAND_RESULT" && payload.status === "verified") {
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if (payload.active === false && payload.recovery_checkpoint) {
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const persisted = await savePowerOffCheckpoint({ contextId: input.context_id, checkpoint: payload.recovery_checkpoint, key: "xyzac-trt" });
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payload.recovery_persistence = persisted;
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} else if (payload.active === true) {
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payload.recovery_persistence = await clearPowerOffCheckpoint({ contextId: input.context_id, key: "xyzac-trt" });
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}
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}
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return response;
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}
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export { UI_COMMANDS };
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