Checkpoint: current Lumen state

pipeline/emergency.ts

@@ -0,0 +1,56 @@
+/**
+ * Emergency unified derivation — floor + dataset section from same source sheet.
+ * Ensures no drift (ARCH 10.3, ARCH 13.1).
+ * Trace: ADR-007, SPIKE-06, IMPLEMENTATION-CONTRACT.md §14, ARCHITECTURE-DESIGN.md:345, §10.3
+ */
+import type { EmergencySource } from "./types.js";
+import type { EmergencyFloor } from "../src/emergency-baseline/types.js";
+import { FLOOR_SIZE_BUDGET } from "../src/emergency-baseline/types.js";
+import { canonicalJson } from "./canonical-json.js";
+import { sha256HexOfString } from "./hash.js";
+import { checkFloorSize } from "./budgets.js";
+
+export function deriveEmergencyFloor(
+  source: EmergencySource,
+  opts: { floorVersion: string; generatedAt: string },
+): { floor: EmergencyFloor; bytes: number; sha256: string } {
+  // Summaries per ARCH 13.1 T1 floor contents — derive from same source
+  const floor: EmergencyFloor = {
+    floor: true,
+    floorVersion: opts.floorVersion,
+    emergencySchemaVersion: source.emergencySchemaVersion,
+    generatedAt: opts.generatedAt,
+    sourceContentVersion: source.contentVersion,
+    services: source.services,
+    address: source.address,
+    musterPoints: source.locations.musterPoints.map((m) => ({ name: m.name })),
+    exits: source.locations.exits.map((e) => ({ name: e.name })),
+    aedSummary:
+      source.locations.aeds.length > 0
+        ? `AEDs: ${source.locations.aeds.length} locations`
+        : "AED on site",
+    procedures: source.procedures.map((p) => ({ id: p.id, title: p.title, steps: [...p.steps] })),
+  };
+  const json = canonicalJson(floor);
+  const bytes = new TextEncoder().encode(json).length;
+  const check = checkFloorSize(bytes);
+  if (!check.ok) throw new Error(check.reason);
+  if (bytes > FLOOR_SIZE_BUDGET) throw new Error(`floor exceeds 16KB budget: ${bytes}`);
+  const sha256 = sha256HexOfString(json);
+  return { floor, bytes, sha256 };
+}
+
+export function validateEmergencySource(
+  source: EmergencySource,
+): { ok: true } | { ok: false; reason: string } {
+  if (!source) return { ok: false, reason: "emergency source missing" };
+  if (!Number.isInteger(source.emergencySchemaVersion) || source.emergencySchemaVersion < 1)
+    return { ok: false, reason: "emergencySchemaVersion must be integer >=1" };
+  if (!Number.isInteger(source.contentVersion) || source.contentVersion < 1)
+    return { ok: false, reason: "contentVersion must be integer >=1" };
+  if (typeof source.updatedAt !== "string" || Number.isNaN(Date.parse(source.updatedAt)))
+    return { ok: false, reason: "updatedAt must be ISO8601" };
+  if (source.section !== "emergency") return { ok: false, reason: "section must be emergency" };
+  // services/address/procedures presence checked via runtime validation in gates; keep light here
+  return { ok: true };
+}