const iso8601ToFrenchRegex = /(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})/;
export function iso8601ToFrench(iso8601: string): string {
    const matches = iso8601.match(iso8601ToFrenchRegex);

    const year = matches[1];
    const month = months[parseInt(matches[2], 10) - 1];
    const day = matches[3];
    const hours = matches[4];
    const minutes = matches[5];
    const seconds = matches[6];

    return `${day} ${month} ${year} à ${hours}:${minutes}:${seconds}`;
}

const frenchToIso8601Regex = /(\d{1,2}) ([a-zA-Z\u00C0-\u024F]+) (\d{4}) à (\d{2}):(\d{2}):(\d{2})/;
export function frenchToIso8601(french: string): string {
    const match = french.match(frenchToIso8601Regex);

    if (!match) {
        throw new Error('Invalid date format');
    }

    const [, day, month, year, hours, minutes, seconds] = match;

    // Convert the month name to a numeric format
    const monthNumber = (months.indexOf(month) + 1).toString();

    if (!monthNumber) {
        throw new Error('Invalid month name');
    }

    // Construct the ISO 8601 formatted string
    const isoDate = `${year}-${monthNumber.padStart(2, '0')}-${day.padStart(2, '0')}T${hours}:${minutes}:${seconds}`;
    return isoDate;
}

const months = [
    "janvier", "février", "mars", "avril", "mai", "juin",
    "juillet", "août", "septembre", "octobre", "novembre", "décembre"
];

export function getCurrentTimeIso8601(): string {
    const now = new Date();

    const year = now.getFullYear().toString();
    const month = String(now.getMonth() + 1).padStart(2, '0');
    const day = String(now.getDate()).padStart(2, '0');
    const hours = String(now.getHours()).padStart(2, '0');
    const minutes = String(now.getMinutes()).padStart(2, '0');
    const seconds = String(now.getSeconds()).padStart(2, '0');

    return `${year}-${month}-${day}T${hours}:${minutes}:${seconds}`;
}