Add optional room areas

tests/building-structure-view.test.ts

@@ -21,6 +21,7 @@ import {
   normalizeBuildingSelection,
   normalizeFloorSelection,
   showsRoomsWithoutFloorEntry,
+  summarizeRoomAreas,
 } from "../src/frontend/utils/building-structure.js";
 
 function building(id: string, name: string, sortOrder: number): BuildingDto {
@@ -36,13 +37,19 @@ function floor(
   return { id, projectId: "project-1", name, sortOrder, buildingId };
 }
 
-function room(id: string, floorId: string | null, roomNumber = id): RoomDto {
+function room(
+  id: string,
+  floorId: string | null,
+  roomNumber = id,
+  areaM2: number | null = null
+): RoomDto {
   return {
     id,
     projectId: "project-1",
     floorId,
     roomNumber,
     roomName: `Raum ${roomNumber}`,
+    areaM2,
   };
 }
 
@@ -263,6 +270,43 @@ describe("building structure view", () => {
     );
   });
 
+  it("sums known areas and counts missing areas per floor and building", () => {
+    const areaRooms = [
+      room("a", "f-a-eg", "a", 20.25),
+      room("b", "f-a-eg"),
+      room("c", "f-free", "c", 5.5),
+      room("d", null, "d", 3),
+      room("e", "f-deleted"),
+    ];
+    const summaries = summarizeRoomAreas(areaRooms, floors, buildings);
+
+    assert.deepEqual(summaries.total, {
+      areaM2: 28.75,
+      roomCount: 5,
+      missingAreaCount: 2,
+    });
+    assert.deepEqual(summaries.byFloor.get("f-a-eg"), {
+      areaM2: 20.25,
+      roomCount: 2,
+      missingAreaCount: 1,
+    });
+    assert.deepEqual(summaries.byFloor.get(null), {
+      areaM2: 3,
+      roomCount: 2,
+      missingAreaCount: 1,
+    });
+    assert.deepEqual(summaries.byBuilding.get("b-a"), {
+      areaM2: 20.25,
+      roomCount: 2,
+      missingAreaCount: 1,
+    });
+    assert.deepEqual(summaries.byBuilding.get(null), {
+      areaM2: 8.5,
+      roomCount: 3,
+      missingAreaCount: 1,
+    });
+  });
+
   it("describes a room location with floor and building", () => {
     assert.equal(
       describeRoomLocation(room("r", "f-a-og"), floors, buildings),