/**
 * @copyright NHCarrigan
 * @license Naomi's Public License
 * @author Naomi Carrigan
 */

import { extname } from "node:path";

/**
 * MIME type mapping for file extensions.
 */
/* eslint-disable @typescript-eslint/naming-convention -- File extensions */
/* eslint-disable stylistic/key-spacing -- Alignment for readability */
const mimeTypes: Record<string, string> = {
  ".7z": "application/x-7z-compressed",
  ".aac": "audio/aac",
  ".avi": "video/x-msvideo",
  ".bmp": "image/bmp",
  ".css": "text/css",
  ".csv": "text/csv",
  ".doc": "application/msword",
  ".docx":
      "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
  ".eot": "application/vnd.ms-fontobject",
  ".flac": "audio/flac",
  ".gif": "image/gif",
  ".gz": "application/gzip",
  ".htm": "text/html",
  ".html": "text/html",
  ".ico": "image/x-icon",
  ".jpeg": "image/jpeg",
  ".jpg": "image/jpeg",
  ".js": "text/javascript",
  ".json": "application/json",
  ".md": "text/markdown",
  ".mkv": "video/x-matroska",
  ".mov": "video/quicktime",
  ".mp3": "audio/mpeg",
  ".mp4": "video/mp4",
  ".ogg": "audio/ogg",
  ".otf": "font/otf",
  ".pdf": "application/pdf",
  ".png": "image/png",
  ".ppt": "application/vnd.ms-powerpoint",
  ".pptx":
      // eslint-disable-next-line stylistic/max-len -- Big boi string.
      "application/vnd.openxmlformats-officedocument.presentationml.presentation",
  ".rar": "application/x-rar-compressed",
  ".svg": "image/svg+xml",
  ".tar": "application/x-tar",
  ".tif": "image/tiff",
  ".tiff": "image/tiff",
  ".ttf": "font/ttf",
  ".txt": "text/plain",
  ".wav": "audio/wav",
  ".webm": "video/webm",
  ".webp": "image/webp",
  ".woff": "font/woff",
  ".woff2": "font/woff2",
  ".xls": "application/vnd.ms-excel",
  ".xlsx":
      "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
  ".xml": "application/xml",
  ".zip": "application/zip",
};
  /* eslint-enable @typescript-eslint/naming-convention -- File extensions */
  /* eslint-enable stylistic/key-spacing -- Alignment for readability */

/**
 * Gets the MIME type for a file based on its extension.
 * @param filePath - The file name or path.
 * @returns The MIME type, or undefined if unknown.
 */
export const getMimeType = (filePath: string): string | undefined => {
  const extension = extname(filePath).toLowerCase();
  return mimeTypes[extension];
};