refactor(web): extract timeline multi-select helpers

2026-04-01 09:50:03 +02:00
parent 3abb3bc865
commit 43f04d66c8
3 changed files with 178 additions and 21 deletions
@@ -0,0 +1,67 @@
+type MultiSelectStateLike = {
+  isSelecting: boolean;
+  startX: number;
+  startY: number;
+  currentX: number;
+  currentY: number;
+  selectedAllocationIds: string[];
+  selectedResourceIds: string[];
+  dateRange: { start: Date; end: Date } | null;
+  multiDragDaysDelta: number;
+  isMultiDragging: boolean;
+  multiDragMode: string;
+};
+
+export function createMultiSelectState<TState extends MultiSelectStateLike>(
+  currentX: number,
+  currentY: number,
+  defaults: Pick<
+    TState,
+    | "selectedAllocationIds"
+    | "selectedResourceIds"
+    | "dateRange"
+    | "multiDragDaysDelta"
+    | "isMultiDragging"
+    | "multiDragMode"
+  >,
+): TState {
+  return {
+    isSelecting: true,
+    startX: currentX,
+    startY: currentY,
+    currentX,
+    currentY,
+    ...defaults,
+  } as TState;
+}
+
+export function updateMultiSelectDraft<TState extends MultiSelectStateLike>(
+  state: TState,
+  currentX: number,
+  currentY: number,
+): TState {
+  return {
+    ...state,
+    currentX,
+    currentY,
+  };
+}
+
+export function finalizeMultiSelectDraft<TState extends MultiSelectStateLike>(
+  state: TState,
+  currentX: number,
+  currentY: number,
+  minDistancePx = 5,
+): TState | null {
+  const distance = Math.hypot(currentX - state.startX, currentY - state.startY);
+  if (distance < minDistancePx) {
+    return null;
+  }
+
+  return {
+    ...state,
+    isSelecting: false,
+    currentX,
+    currentY,
+  };
+}