local levels = vim.diagnostic.severity

local opts = {
  virtual_text = false,
  float = {
    border = "rounded",
  },
  signs = {
    text = {
      [levels.ERROR] = '✘',
      [levels.WARN] = '▲',
      [levels.HINT] = '⚑',
      [levels.INFO] = '»',
    },
  },
}

local sign_define = function(name, text)
  local hl = 'DiagnosticSign' .. name
  vim.fn.sign_define(hl, {
    texthl = hl,
    text = text,
    numhl = ''
  })
end

if vim.fn.has('nvim-0.10') == 0 then
  sign_define('Error', opts.signs.text[levels.ERROR])
  sign_define('Warn', opts.signs.text[levels.WARN])
  sign_define('Hint', opts.signs.text[levels.HINT])
  sign_define('Info', opts.signs.text[levels.INFO])
end

vim.cmd [[autocmd CursorHold,CursorHoldI * lua vim.diagnostic.open_float(nil, {focus=false})]]
vim.diagnostic.config(opts)