---@class rmz.util
local M = {
  ui  = require("rmz.util.ui"),
  lazy = require("rmz.util.lazy"),
  lsp = require("rmz.util.lsp"),
}

--- Deduplicates a list.
---@generic T
---@param list T[]
---@return T[]
function M.dedup(list)
  local ret = {}
  local seen = {}
  for _, v in ipairs(list) do
    if not seen[v] then
      table.insert(ret, v)
      seen[v] = true
    end
  end
  return ret
end

function M.foldexpr()
  local buf = vim.api.nvim_get_current_buf()
  if vim.b[buf].ts_folds == nil then
    -- as long as we don't have a filetype, don't bother
    -- checking if treesitter is available (it won't)
    if vim.bo[buf].filetype == "" then
      return "0"
    end
    if vim.bo[buf].filetype:find("dashboard") then
      vim.b[buf].ts_folds = false
    else
      vim.b[buf].ts_folds = pcall(vim.treesitter.get_parser, buf)
    end
  end
  return vim.b[buf].ts_folds and vim.treesitter.foldexpr() or "0"
end

return M