Function applyRecurringInstanceChanges

src/modals/taskEditChanges.ts:256–343

(
	input: TaskEditChangeInput,
	changes: Partial<TaskInfo>
)

}

function applyRecurringInstanceChanges(
	input: TaskEditChangeInput,
	changes: Partial<TaskInfo>
): void {
	if (
		input.completedInstancesChanges.length === 0 &&
		input.skippedInstancesChanges.length === 0
	) {
		return;
	}

	const originalCompleted = new Set(input.task.complete_instances || []);
	const originalSkipped = new Set(input.task.skipped_instances || []);
	const currentCompleted = new Set(originalCompleted);
	const currentSkipped = new Set(originalSkipped);

	for (const dateStr of input.completedInstancesChanges) {
		if (currentCompleted.has(dateStr)) {
			currentCompleted.delete(dateStr);
		} else {
			currentCompleted.add(dateStr);
		}
	}

	for (const dateStr of input.skippedInstancesChanges) {
		if (currentSkipped.has(dateStr)) {
			currentSkipped.delete(dateStr);
		} else {
			currentSkipped.add(dateStr);
			currentCompleted.delete(dateStr);
		}
	}

	for (const dateStr of currentCompleted) {
		currentSkipped.delete(dateStr);
	}
	for (const dateStr of currentSkipped) {
		currentCompleted.delete(dateStr);
	}

	let latestAddedCompletion: string | null = null;
	for (const dateStr of input.completedInstancesChanges) {
		if (!originalCompleted.has(dateStr) && currentCompleted.has(dateStr)) {
			if (!latestAddedCompletion || dateStr > latestAddedCompletion) {
				latestAddedCompletion = dateStr;
			}
		}
	}

	if (!setsEqual(originalCompleted, currentCompleted)) {
		changes.complete_instances = Array.from(currentCompleted);
	}

	if (!setsEqual(originalSkipped, currentSkipped)) {
		changes.skipped_instances = Array.from(currentSkipped);
	}

	if (!input.task.recurrence || typeof input.task.recurrence !== "string") {