if vim.g.ivy_ft then
  return
end

vim.g.ivy_ft = true

vim.filetype.add({
  extension = {
    rn = "html",
    rune = "html",
  },
  pattern = {
    ["shaders/.*%.[vf]sh"] = "glsl",
  },
  filename = {
    ["todo.txt"] = "todotxt",
  },
})

--- source @nvim-treesitter https://github.com/nvim-treesitter/nvim-treesitter/blob/4916d6592ede8c07973490d9322f187e07dfefac/plugin/filetypes.lua
local filetypes = {
  angular = { "htmlangular" },
  bash = { "sh" },
  bibtex = { "bib" },
  c_sharp = { "cs", "csharp" },
  commonlisp = { "lisp" },
  cooklang = { "cook" },
  devicetree = { "dts" },
  diff = { "gitdiff" },
  eex = { "eelixir" },
  elixir = { "ex" },
  embedded_template = { "eruby" },
  erlang = { "erl" },
  facility = { "fsd" },
  faust = { "dsp" },
  gdshader = { "gdshaderinc" },
  git_config = { "gitconfig" },
  git_rebase = { "gitrebase" },
  glimmer = { "handlebars", "html.handlebars" },
  godot_resource = { "gdresource" },
  haskell = { "hs" },
  haskell_persistent = { "haskellpersistent" },
  idris = { "idris2" },
  ini = { "confini", "dosini" },
  janet_simple = { "janet" },
  javascript = { "javascriptreact", "ecma", "ecmascript", "jsx", "js" },
  json = { "jsonc" },
  glimmer_javascript = { "javascript.glimmer" },
  latex = { "tex" },
  linkerscript = { "ld" },
  m68k = { "asm68k" },
  make = { "automake" },
  markdown = { "pandoc" },
  muttrc = { "neomuttrc" },
  ocaml_interface = { "ocamlinterface" },
  perl = { "pl" },
  poe_filter = { "poefilter" },
  powershell = { "ps1" },
  properties = { "jproperties" },
  python = { "py", "gyp" },
  qmljs = { "qml" },
  runescript = { "clientscript" },
  scala = { "sbt" },
  slang = { "shaderslang" },
  sqp = { "mysqp" },
  ssh_config = { "sshconfig" },
  starlark = { "bzl" },
  surface = { "sface" },
  systemverilog = { "verilog" },
  t32 = { "trace32" },
  tcl = { "expect" },
  terraform = { "terraform-vars" },
  textproto = { "pbtxt" },
  tlaplus = { "tla" },
  tsx = { "typescriptreact", "typescript.tsx" },
  typescript = { "ts" },
  glimmer_typescript = { "typescript.glimmer" },
  typst = { "typ" },
  udev = { "udevrules" },
  uxntal = { "tal", "uxn" },
  v = { "vlang" },
  vhs = { "tape" },
  xml = { "xsd", "xslt", "svg" },
  xresources = { "xdefaults" },
}

for lang, ft in pairs(filetypes) do
  vim.treesitter.language.register(lang, ft)
end

vim.on("FileType", "*", {}, function(ev)
  if not vim.api.nvim_buf_is_loaded(ev.buf) then
    return
  end

  local ok, _ = pcall(vim.treesitter.start, ev.buf)
  if not ok then
    return
  end
  vim.wo.foldmethod = "expr"
  vim.wo.foldexpr = "v:lua.vim.treesitter.foldexpr()"
  vim.bo.indentexpr = "v:lua.require('ivy.treesitter-indentexpr').indent()"
end)