Add atomic Revit initial import

src/domain/models/external-initial-import-project-command.model.ts

@@ -0,0 +1,134 @@
+import type { ExternalModelStateSnapshot } from "../../external-model/domain/external-model-contracts.js";
+import { parseExternalModelStateSnapshot } from "./project-state-snapshot.model.js";
+import type { SerializedProjectCommand } from "./project-command.model.js";
+
+export const externalInitialImportCommandType =
+  "external-import.apply-initial" as const;
+export const externalInitialImportCommandSchemaVersion = 1 as const;
+
+export interface ExternalInitialImportPayload {
+  expected: ExternalModelStateSnapshot;
+  target: ExternalModelStateSnapshot;
+}
+
+export interface ExternalInitialImportProjectCommand
+  extends SerializedProjectCommand<ExternalInitialImportPayload> {
+  schemaVersion: typeof externalInitialImportCommandSchemaVersion;
+  type: typeof externalInitialImportCommandType;
+}
+
+export function createExternalInitialImportProjectCommand(
+  expected: ExternalModelStateSnapshot,
+  target: ExternalModelStateSnapshot
+): ExternalInitialImportProjectCommand {
+  const command: ExternalInitialImportProjectCommand = {
+    schemaVersion: externalInitialImportCommandSchemaVersion,
+    type: externalInitialImportCommandType,
+    payload: { expected, target },
+  };
+  assertExternalInitialImportProjectCommand(command);
+  return command;
+}
+
+export function assertExternalInitialImportProjectCommand(
+  command: SerializedProjectCommand<unknown>
+): asserts command is ExternalInitialImportProjectCommand {
+  if (
+    command.schemaVersion !== externalInitialImportCommandSchemaVersion ||
+    command.type !== externalInitialImportCommandType ||
+    !isRecord(command.payload) ||
+    Object.keys(command.payload).length !== 2
+  ) {
+    throw new Error("Unsupported external initial import command.");
+  }
+  const expected = parseExternalModelStateSnapshot(command.payload.expected);
+  const target = parseExternalModelStateSnapshot(command.payload.target);
+  const expectedIsEmpty = isEmptyExternalModelState(expected);
+  const targetIsEmpty = isEmptyExternalModelState(target);
+  if (expectedIsEmpty === targetIsEmpty) {
+    throw new Error("External initial import must transition between empty and populated state.");
+  }
+  assertPopulatedInitialState(expectedIsEmpty ? target : expected);
+}
+
+export function createEmptyExternalModelState(): ExternalModelStateSnapshot {
+  return { source: null, importBatches: [], roomMappings: [], objects: [] };
+}
+
+export function isEmptyExternalModelState(state: ExternalModelStateSnapshot) {
+  return (
+    state.source === null &&
+    state.importBatches.length === 0 &&
+    state.roomMappings.length === 0 &&
+    state.objects.length === 0
+  );
+}
+
+function assertPopulatedInitialState(state: ExternalModelStateSnapshot) {
+  if (state.source === null || state.importBatches.length !== 1 || state.objects.length === 0) {
+    throw new Error("External initial import requires one source, one batch and at least one object.");
+  }
+  const source = state.source;
+  const batch = state.importBatches[0];
+  if (
+    batch.importKind !== "initial" ||
+    batch.projectId !== source.projectId ||
+    batch.sourceId !== source.id
+  ) {
+    throw new Error("External initial import batch identity is invalid.");
+  }
+  const mappingIds = uniqueIds(state.roomMappings, "room mapping");
+  const roomKeys = new Set<string>();
+  for (const mapping of state.roomMappings) {
+    if (mapping.projectId !== source.projectId || mapping.sourceId !== source.id) {
+      throw new Error("External initial room mapping identity is invalid.");
+    }
+    if (roomKeys.has(mapping.normalizedSourceRoomKey)) {
+      throw new Error("External initial import contains duplicate room keys.");
+    }
+    roomKeys.add(mapping.normalizedSourceRoomKey);
+  }
+  uniqueIds(state.objects, "object");
+  const ifcGuids = new Set<string>();
+  for (const object of state.objects) {
+    if (
+      object.projectId !== source.projectId ||
+      object.sourceId !== source.id ||
+      object.lastSeenImportBatchId !== batch.id ||
+      object.lastAcceptedImportBatchId !== batch.id
+    ) {
+      throw new Error("External initial object identity is invalid.");
+    }
+    if (ifcGuids.has(object.ifcGuid)) {
+      throw new Error("External initial import contains duplicate IFCGUIDs.");
+    }
+    ifcGuids.add(object.ifcGuid);
+    if (
+      object.externalRoomMappingId !== null &&
+      !mappingIds.has(object.externalRoomMappingId)
+    ) {
+      throw new Error("External initial object room mapping is invalid.");
+    }
+    if (object.circuitDeviceRowId !== null) {
+      throw new Error("External initial import must not assign circuit device rows.");
+    }
+    if (object.presenceStatus !== "present") {
+      throw new Error("External initial import objects must be present.");
+    }
+  }
+}
+
+function uniqueIds(entries: ReadonlyArray<{ id: string }>, label: string) {
+  const ids = new Set<string>();
+  for (const entry of entries) {
+    if (ids.has(entry.id)) {
+      throw new Error(`External initial import contains duplicate ${label} ids.`);
+    }
+    ids.add(entry.id);
+  }
+  return ids;
+}
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return value !== null && typeof value === "object" && !Array.isArray(value);
+}

src/domain/models/project-state-snapshot.model.ts

@@ -24,6 +24,7 @@ import {
   externalImportKinds,
   externalModelSourceTypes,
   externalObjectPresenceStatuses,
+  type ExternalModelStateSnapshot,
 } from "../../external-model/domain/external-model-contracts.js";
 
 export const projectStateSnapshotSchemaVersion = 4 as const;
@@ -333,6 +334,7 @@ const externalImportBatchSchema = z.object({
   fileName: z.string().trim().min(1),
   sha256: z.string().regex(/^[a-f0-9]{64}$/),
   appliedProjectRevision: z.number().int().nonnegative(),
+  configurationVersion: z.number().int().positive(),
   configurationSnapshot: z.custom<ExternalCsvConfiguration>(
     (value) => validateExternalCsvConfiguration(value).success
   ),
@@ -414,6 +416,12 @@ const externalModelStateSchema = z.object({
   objects: z.array(externalModelObjectSchema),
 }).strict();
 
+export function parseExternalModelStateSnapshot(
+  value: unknown
+): ExternalModelStateSnapshot {
+  return externalModelStateSchema.parse(value);
+}
+
 const projectStateSnapshotContents = {
   circuitLists: z.array(circuitListSchema),
   circuitSections: z.array(circuitSectionSchema),