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// SPDX-FileCopyrightText: 2024 Shota FUJI <pockawoooh@gmail.com>
// SPDX-License-Identifier: AGPL-3.0-only

export type TabluarData = (string | number)[][];

/**
 * <https://www.iana.org/assignments/media-types/text/tab-separated-values>
 */
export function createTSV(data: TabluarData): string {
	return data
		.map((row) =>
			row
				.map((cell) => {
					if (typeof cell === "number") {
						return cell.toString(10);
					}

					return cell.replace(/[\r\n\t]/g, "");
				})
				.join("\t"),
		)
		.join("\r\n");
}

/**
 * <https://datatracker.ietf.org/doc/html/rfc4180>
 */
export function createCSV(data: TabluarData): string {
	return data
		.map((row) =>
			row
				.map((cell) => {
					if (typeof cell === "number") {
						return cell.toString(10);
					}

					if (!/[,"\n]/.test(cell)) {
						return cell;
					}

					return `"${cell.replace(/"/g, `""`)}"`;
				})
				.join(","),
		)
		.join("\r\n");
}