Simplify

src/lib/planning.ts

@@ -0,0 +1,49 @@
+import { buildGeometry } from './geometry';
+import { planFlooringOptions } from './flooring';
+import { planSkirting } from './skirting';
+import type { FlooringOptions } from './flooring';
+import type { Geometry, Project, SkirtingPlan } from './types';
+
+/** One calculator per editor. Compare calculation inputs, excluding names and progress. */
+export function createPlanCalculator() {
+  let previous: Project | undefined;
+  let geometries: Geometry[] = [];
+  let flooringOptions: FlooringOptions;
+  let skirting: SkirtingPlan;
+  return (project: Project) => {
+    const sameOutlines =
+      previous &&
+      previous.tolerance === project.tolerance &&
+      previous.rooms.length === project.rooms.length &&
+      project.rooms.every(
+        (room, i) => room.id === previous!.rooms[i].id && room.walls === previous!.rooms[i].walls,
+      );
+    const sameDirections =
+      sameOutlines &&
+      project.rooms.every((room, i) => room.direction === previous!.rooms[i].direction);
+    const sameFlooring =
+      previous &&
+      Object.entries(project.flooring).every(
+        ([key, value]) => key === 'optimisation' || Reflect.get(previous!.flooring, key) === value,
+      );
+    if (!sameOutlines)
+      geometries = project.rooms.map((room, i) =>
+        previous?.tolerance === project.tolerance &&
+        previous.rooms[i]?.id === room.id &&
+        previous.rooms[i]?.walls === room.walls
+          ? geometries[i]
+          : buildGeometry(room, project.tolerance),
+      );
+    if (!sameDirections || !sameFlooring)
+      flooringOptions = planFlooringOptions(
+        project.rooms,
+        project.flooring,
+        project.tolerance,
+        geometries,
+      );
+    if (!sameOutlines || previous?.skirting !== project.skirting)
+      skirting = planSkirting(project.rooms, project.skirting, project.tolerance, geometries);
+    previous = project;
+    return { geometries, flooringOptions: flooringOptions!, skirting: skirting! };
+  };
+}