const db = new Map(
  fs.readFileSync(path.join(import.meta.dirname, "mime.txt"), "utf8")
    .split("\n").filter(Boolean).map((line) =>
      line.split(/\s+/) as [string, string]
    ),
);

/**
 * Accepts:
 * - Full file path
 * - Extension (with or without dot)
 */
export function contentTypeFor(file: string) {
  if (file.includes("/") || file.includes("\\")) {
    // Some file names are special cased.
    switch (path.basename(file)) {
      case "rss.xml":
        return "application/rss+xml";
    }

    file = path.extname(file);
  }
  const dot = file.indexOf(".");
  if (dot === -1) file = "." + file;
  else if (dot > 0) file = file.slice(dot);
  return db.get(file) ?? "application/octet-stream";
}

import * as fs from "./fs.ts";
import * as path from "node:path";