export function formatDate(date: Date): string {
  const options = { year: "numeric", month: "long", day: "numeric" } as const;
  return new Intl.DateTimeFormat("en-US", options).format(date);
}

export function safeFileName(inputString: string): string {
  // Convert the string to lowercase
  let fileName = inputString.toLowerCase();

  // Replace spaces with underscores
  fileName = fileName.replace(/ /g, "_");

  // Remove characters that are not safe for file names
  fileName = fileName.replace(/[^\w.-]/g, "");

  return fileName;
}

export function extractHashTags(inputString: string) {
  const hashtags = [];

  for (
    const [hashtag] of inputString.matchAll(/(?:^|\s)#\S*(?<!\))/g)
  ) {
    const cleaned = hashtag.replace(/\#/g, "").trim();
    if (cleaned.length > 2) {
      hashtags.push(cleaned);
    }
  }

  return hashtags;
}

export const isYoutubeLink = (link: string) => {
  try {
    const url = new URL(link);
    return ["youtu.be", "youtube.com","www.youtube.com" ].includes(url.hostname);
  } catch (err) {
    console.log(err);
    return false;
  }
};

export function extractYoutubeId(link: string) {
  const url = new URL(link);
  if (url.searchParams.has("v")) {
    const id = url.searchParams.get("v");

    if (id?.length && id.length > 4) {
      return id;
    }
  }

  return url.pathname.replace(/^\//, "");
}