Function assignTaskAsSubtask

src/services/taskRelationshipActions.ts:104–140

(
	plugin: TaskNotesPlugin,
	parentFile: TFile,
	subtask: TaskInfo
)

}

export async function assignTaskAsSubtask(
	plugin: TaskNotesPlugin,
	parentFile: TFile,
	subtask: TaskInfo
): Promise<TaskInfo | null> {
	const projectReference = generateLink(
		plugin.app,
		parentFile,
		subtask.path,
		"",
		"",
		plugin.settings.useFrontmatterMarkdownLinks
	);
	const legacyReference = `[[${parentFile.basename}]]`;
	const subtaskProjects = Array.isArray(subtask.projects) ? subtask.projects : [];

	if (subtaskProjects.includes(projectReference) || subtaskProjects.includes(legacyReference)) {
		publishUserNotice(
			plugin.emitter,
			translate(plugin, "contextMenus.task.organization.notices.alreadySubtask")
		);
		return null;
	}

	const sanitizedProjects = subtaskProjects.filter((entry) => entry !== legacyReference);
	const updatedProjects = [...sanitizedProjects, projectReference];
	const updatedSubtask = await plugin.updateTaskProperty(subtask, "projects", updatedProjects);

	publishUserNotice(
		plugin.emitter,
		translate(plugin, "contextMenus.task.organization.notices.addedAsSubtask", {
			subtask: subtask.title,
			parent: parentFile.basename,
		})
	);
	return updatedSubtask;
}

export function buildSubtaskCreationPrePopulatedValues(
	plugin: TaskNotesPlugin,