-- Stolen from https://github.com/folke/snacks.nvim/blob/main/lua/snacks/bigfile.lua

local auto = require 'std.auto'

local defaults = {
  size = 1.5 * 1024 * 1024, -- 1.5MB
  -- Enable or disable features when big file detected
  ---@param ctx {buf: number, ft:string}
  setup = function(ctx)
    vim.cmd([[NoMatchParen]])
    vim.opt.shadafile = ''
    vim.schedule(function()
      vim.bo[ctx.buf].syntax = ctx.ft
    end)
  end,
}

vim.filetype.add({
  pattern = {
    [".*"] = {
      function(path, buf)
        return vim.bo[buf]
            and vim.bo[buf].filetype ~= "bigfile"
            and path
            and vim.fn.getfsize(path) > defaults.size
            and "bigfile"
            or nil
      end,
    },
  },
})

auto 'bigfile' {
  events = 'FileType',
  pattern = "bigfile",
  command = function(ev)
    local path = vim.fn.fnamemodify(vim.api.nvim_buf_get_name(ev.buf), ":p:~:.")
    vim.notify(("Big file detected `%s`."):format(path) .. "\nSome Neovim features have been **disabled**.",
      vim.log.levels.WARN,
      { title = 'bigfile' })
    vim.api.nvim_buf_call(ev.buf, function()
      defaults.setup({
        buf = ev.buf,
        ft = vim.filetype.match({ buf = ev.buf }) or "",
      })
    end)
  end,
}