/** file → grammar classification, shared by highlighting and the per-language file listing */

// mirrors canonical() in src/grammar_manifest.rs; keep them in sync
const grammars: Record<string, string> = {
  ada: "ada",
  adb: "ada",
  adoc: "asciidoc",
  ads: "ada",
  agda: "agda",
  asciidoc: "asciidoc",
  asm: "asm",
  assembly: "asm",
  awk: "awk",
  bash: "bash",
  bash_profile: "bash",
  bashrc: "bash",
  bat: "batch",
  batch: "batch",
  bazel: "starlark",
  bzl: "starlark",
  c: "c",
  "c#": "c-sharp",
  "c++": "cpp",
  "c-sharp": "c-sharp",
  caddy: "caddy",
  caddyfile: "caddy",
  capnp: "capnp",
  cbl: "cobol",
  cc: "cpp",
  cedar: "cedar",
  cedarschema: "cedarschema",
  cfg: "ini",
  cjs: "javascript",
  cl: "commonlisp",
  clj: "clojure",
  cljc: "clojure",
  cljs: "clojure",
  clojure: "clojure",
  cmake: "cmake",
  "cmakelists.txt": "cmake",
  cmd: "batch",
  cob: "cobol",
  cobol: "cobol",
  commonlisp: "commonlisp",
  conf: "ini",
  console: "bash",
  containerfile: "dockerfile",
  cpp: "cpp",
  cpy: "cobol",
  cs: "c-sharp",
  csharp: "c-sharp",
  csproj: "xml",
  css: "css",
  cts: "typescript",
  cxx: "cpp",
  d: "d",
  dart: "dart",
  devicetree: "devicetree",
  diff: "diff",
  dlang: "d",
  docker: "dockerfile",
  dockerfile: "dockerfile",
  dot: "dot",
  dts: "devicetree",
  dtsi: "devicetree",
  editorconfig: "ini",
  edn: "clojure",
  el: "elisp",
  elisp: "elisp",
  elixir: "elixir",
  elm: "elm",
  "emacs-lisp": "elisp",
  erl: "erlang",
  erlang: "erlang",
  ex: "elixir",
  exs: "elixir",
  "f#": "fsharp",
  fish: "fish",
  frag: "glsl",
  fs: "fsharp",
  fsharp: "fsharp",
  fsx: "fsharp",
  gemfile: "ruby",
  gemspec: "ruby",
  gitattributes: "gitattributes",
  gitconfig: "ini",
  gitmodules: "ini",
  gleam: "gleam",
  glsl: "glsl",
  gnumakefile: "make",
  go: "go",
  golang: "go",
  gql: "graphql",
  gradle: "groovy",
  graphql: "graphql",
  graphviz: "dot",
  groovy: "groovy",
  gsh: "groovy",
  gv: "dot",
  gvy: "groovy",
  gy: "groovy",
  h: "c",
  haskell: "haskell",
  hcl: "hcl",
  hh: "cpp",
  hlsl: "hlsl",
  hpp: "cpp",
  hrl: "erlang",
  hs: "haskell",
  htm: "html",
  html: "html",
  hxx: "cpp",
  idr: "idris",
  idris: "idris",
  ini: "ini",
  j2: "jinja2",
  java: "java",
  javascript: "javascript",
  jinja: "jinja2",
  jinja2: "jinja2",
  jl: "julia",
  jq: "jq",
  js: "javascript",
  jsdoc: "jsdoc",
  json: "json",
  json5: "json",
  jsonc: "json",
  jsx: "javascript",
  julia: "julia",
  just: "just",
  justfile: "just",
  kconfig: "kconfig",
  kdl: "kdl",
  kotlin: "kotlin",
  kt: "kotlin",
  kts: "kotlin",
  lean: "lean",
  lisp: "commonlisp",
  lua: "lua",
  m: "matlab",
  make: "make",
  makefile: "make",
  markdown: "markdown",
  matlab: "matlab",
  md: "markdown",
  mdx: "markdown",
  meson: "meson",
  "meson.build": "meson",
  mjs: "javascript",
  mk: "make",
  ml: "ocaml",
  mli: "ocaml",
  mm: "objc",
  mts: "typescript",
  mysql: "sql",
  nasm: "x86asm",
  nginx: "nginx",
  "nginx.conf": "nginx",
  ninja: "ninja",
  nix: "nix",
  objc: "objc",
  "objective-c": "objc",
  objectivec: "objc",
  ocaml: "ocaml",
  odin: "odin",
  opa: "rego",
  patch: "diff",
  pbtxt: "textproto",
  perl: "perl",
  pgsql: "sql",
  php: "php",
  pl: "perl",
  plist: "xml",
  plsql: "sql",
  pm: "perl",
  postgres: "sql",
  postgresql: "sql",
  postscript: "postscript",
  powershell: "powershell",
  pro: "prolog",
  prolog: "prolog",
  proto: "proto",
  protobuf: "proto",
  ps: "postscript",
  ps1: "powershell",
  psm1: "powershell",
  pwsh: "powershell",
  py: "python",
  py3: "python",
  pyi: "python",
  python: "python",
  python3: "python",
  query: "query",
  r: "r",
  racket: "scheme",
  rakefile: "ruby",
  rb: "ruby",
  regex: "regex",
  regexp: "regex",
  rego: "rego",
  res: "rescript",
  rescript: "rescript",
  rkt: "scheme",
  rlang: "r",
  ron: "ron",
  rq: "sparql",
  rs: "rust",
  ruby: "ruby",
  rust: "rust",
  s: "asm",
  sass: "scss",
  sbt: "scala",
  scala: "scala",
  scheme: "scheme",
  scm: "query",
  scss: "scss",
  sh: "bash",
  shell: "bash",
  sol: "solidity",
  solidity: "solidity",
  sparql: "sparql",
  sql: "sql",
  sqlite: "sql",
  ss: "scheme",
  "ssh-config": "ssh-config",
  ssh_config: "ssh-config",
  sshd_config: "ssh-config",
  starlark: "starlark",
  styx: "styx",
  sv: "verilog",
  svelte: "svelte",
  svg: "xml",
  swift: "swift",
  systemverilog: "verilog",
  terraform: "hcl",
  textpb: "textproto",
  textproto: "textproto",
  tf: "hcl",
  tfvars: "hcl",
  thrift: "thrift",
  tla: "tlaplus",
  tlaplus: "tlaplus",
  toml: "toml",
  ts: "typescript",
  tsql: "sql",
  tsx: "tsx",
  typ: "typst",
  typescript: "typescript",
  typst: "typst",
  ua: "uiua",
  uiua: "uiua",
  v: "verilog",
  vb: "vb",
  vbnet: "vb",
  verilog: "verilog",
  vert: "glsl",
  vhd: "vhdl",
  vhdl: "vhdl",
  vim: "vim",
  viml: "vim",
  vimrc: "vim",
  vimscript: "vim",
  visualbasic: "vb",
  vue: "vue",
  "wasm-interface": "wit",
  wit: "wit",
  x86: "x86asm",
  x86asm: "x86asm",
  xhtml: "html",
  xml: "xml",
  xsd: "xml",
  xsl: "xml",
  xslt: "xml",
  yaml: "yaml",
  yml: "yaml",
  yuri: "yuri",
  zig: "zig",
  zon: "zig",
  zsh: "zsh",
  zshrc: "zsh",
};

/** mirrors detect() in src/grammar_manifest.rs: by file name, then by extension */
export function detectLanguage(path: string): string | null {
  const name = path.split("/").at(-1)!.toLowerCase();
  return grammars[name] ?? grammars[name.split(".").at(-1)!] ?? null;
}

/** mirrors group() in src/languages.rs; keep them in sync */
export const languageGroup = (grammar: string) => grammar === "tsx" ? "typescript" : grammar;