function splitByLines(content: string): Array<string> {
	return content.split("\n");
}

function isCommentedLine(line: string): boolean {
	return line.trim().startsWith("*");
}

function isMultiline(lines: Array<string>): boolean {
	return lines.length > 1;
}

function addPrefixToLine(line: string): string {
	const prefix = " ";

	return `${prefix}${line}`;
}

/**
 * Formats php comment
 *
 * @param comment
 * @returns string
 */
export function formatPhpComment(comment: string): string {
	const lines = splitByLines(comment);

	if (!isMultiline(lines)) {
		return comment;
	}

	let nonCommentLineExists = false;

	const mapped = lines.map((line: string, row: number) => {
		if (row === 0) {
			return line;
		}

		if (nonCommentLineExists) {
			return line;
		}

		if (!isCommentedLine(line)) {
			nonCommentLineExists = true;
			return line;
		}

		const trimmedLine = line.trim();

		return addPrefixToLine(trimmedLine);
	});

	return mapped.join("\n");
}

export default {
	formatPhpComment,
};