'use strict';

module.exports = function splitTextComponents(treeList) {
	function flatten(treeList, tagStack) {
		return treeList.reduce((all, item) => {
			if (item.type === "text") {
				let splitItems = item.text.split("\n").reduce((items, line) => {
					return items.concat([{
						type: "text",
						text: line,
						tags: tagStack
					}, {
						type: "newline"
					}]);
				}, []);

				/* Remove the last newline, because it's not delimiting anything. */
				splitItems.pop();

				return all.concat(splitItems);
			} else {
				return all.concat(flatten(item.contents, tagStack.concat([item])));
			}
		}, []);
	}

	return flatten(treeList, []);
}