/**
 * Shared utility functions for PluginBot
 * Centralised here to avoid duplication across commands
 */

export function generateAvatarLink(authorID) {
  const idStr = authorID.toString();
  const splitPoint = Math.ceil(idStr.length / 2);
  const firstHalf = idStr.substring(0, splitPoint);
  return `https://www.spigotmc.org/data/avatars/l/${firstHalf}/${authorID}.jpg`;
}

export function generateAuthorURL(authorName, authorID) {
  return `https://www.spigotmc.org/members/${authorName}.${authorID}/`;
}

export function generateResourceIconURL(resource) {
  return resource.icon
    .fullUrl()
    .replace("orgdata", "org/data")
    .replace("https://spigotmc.org", "https://www.spigotmc.org");
  // www must be present – embeds don't render without it
}

export function generateResourceURL(resourceID) {
  return `https://spigotmc.org/resources/.${resourceID}/`;
}

/**
 * Converts basic SpigotMC HTML to Discord Markdown.
 * BUG FIX: </i> was previously mapped to "**" (bold) instead of "*" (italic)
 */
export function formatText(description) {
  return description
    .replace(/<b>/gi, "**")
    .replace(/<\/b>/gi, "**")
    .replace(/<i>/gi, "*")
    .replace(/<\/i>/gi, "*")        // ← was "**" before (bug)
    .replace(/<ul>/gi, "")
    .replace(/<\/ul>/gi, "")
    .replace(/<li>/gi, "• ")
    .replace(/<\/li>/gi, "\n")
    .replace(/<br\s*\/?>/gi, "\n")
    .replace(/<[^>]+>/g, "");       // strip any remaining HTML tags
}

/**
 * Fetches the latest version name for a Spiget resource.
 * Uses native fetch instead of the legacy xmlhttprequest package.
 */
export async function getLatestVersion(resourceID) {
  const res = await fetch(
    `https://api.spiget.org/v2/resources/${resourceID}/versions/latest`
  );
  if (!res.ok) throw new Error(`Spiget version request failed: HTTP ${res.status}`);
  const data = await res.json();
  return data.name;
}

/**
 * Fetches the latest update description for a Spiget resource.
 * Returns a Discord-safe string (max 1024 chars).
 */
export async function getUpdateDescription(resourceID) {
  const res = await fetch(
    `https://api.spiget.org/v2/resources/${resourceID}/updates/latest`
  );
  if (!res.ok) throw new Error(`Spiget update request failed: HTTP ${res.status}`);
  const data = await res.json();
  const decoded = Buffer.from(data.description, "base64").toString("utf8");
  const formatted = formatText(decoded);
  return formatted.length > 1024
    ? "Description is greater than 1024 characters – visit the resource page for details."
    : formatted;
}