/* Syntax highlighting (Prism) + file-type icon metadata. */
(function () {
  const EXT_LANG = {
    php: "php", js: "javascript", mjs: "javascript", cjs: "javascript",
    jsx: "jsx", ts: "typescript", tsx: "tsx", py: "python",
    html: "markup", xml: "markup", svg: "markup", vue: "markup",
    css: "css", scss: "css", json: "json", md: "markdown",
    sh: "bash", bash: "bash", yml: "yaml", yaml: "yaml", env: "bash",
  };

  function ext(path) {
    const base = path.split("/").pop() || "";
    if (base === ".env" || base.startsWith(".env")) return "env";
    const i = base.lastIndexOf(".");
    return i >= 0 ? base.slice(i + 1).toLowerCase() : "";
  }

  function langFor(path) { return EXT_LANG[ext(path)] || null; }

  function langLabel(path) {
    const e = ext(path);
    const map = {
      php: "PHP", js: "JavaScript", mjs: "JavaScript", ts: "TypeScript",
      tsx: "TypeScript", jsx: "JavaScript", py: "Python", html: "HTML",
      css: "CSS", json: "JSON", md: "Markdown", sh: "Shell", env: "Dotenv",
      yml: "YAML", yaml: "YAML",
    };
    return map[e] || (e ? e.toUpperCase() : "Plain Text");
  }

  function escapeHtml(s) {
    return s.replace(/[&<>]/g, (c) => ({ "&": "&amp;", "<": "&lt;", ">": "&gt;" }[c]));
  }

  // highlight a single line independently (keeps line numbering robust)
  function hlLine(line, lang) {
    if (line === "") return "&nbsp;";
    try {
      const grammar = lang && window.Prism && Prism.languages[lang];
      if (grammar) return Prism.highlight(line, grammar, lang);
    } catch (e) { /* fall through */ }
    return escapeHtml(line);
  }

  // ---- file-type icon: colored monogram chip --------------------------
  const ICONS = {
    php:  { c: "#a78bdb", t: "php" },
    js:   { c: "#e6c860", t: "js" },
    mjs:  { c: "#e6c860", t: "js" },
    ts:   { c: "#5a9bd6", t: "ts" },
    tsx:  { c: "#5a9bd6", t: "ts" },
    jsx:  { c: "#5a9bd6", t: "jsx" },
    py:   { c: "#5fa8d6", t: "py" },
    html: { c: "#e08b6a", t: "<>" },
    css:  { c: "#5a9bd6", t: "{}" },
    scss: { c: "#d6699e", t: "{}" },
    json: { c: "#d8a85c", t: "{}" },
    md:   { c: "#9aa0a8", t: "md" },
    env:  { c: "#7fc6a0", t: "$" },
    sh:   { c: "#7fc6a0", t: "$" },
    yml:  { c: "#cf7a6a", t: "yml" },
    yaml: { c: "#cf7a6a", t: "yml" },
    lock: { c: "#8a8f98", t: "lk" },
  };
  const NAME_ICONS = {
    "composer.json": { c: "#a78bdb", t: "co" },
    "package.json":  { c: "#cf7a6a", t: "pk" },
    "README.md":     { c: "#5a9bd6", t: "md" },
    ".env":          { c: "#7fc6a0", t: "$" },
  };

  function iconFor(path) {
    const base = path.split("/").pop() || "";
    if (NAME_ICONS[base]) return NAME_ICONS[base];
    return ICONS[ext(path)] || { c: "#7d838c", t: base.slice(0, 2) || "·" };
  }

  window.HL = { ext, langFor, langLabel, hlLine, iconFor, escapeHtml };
})();