lualine.nvim/lua/lualine/components/datetime.lua

-- Copyright (c) 2023 Willothy
-- MIT license, see LICENSE for more details.
local lualine_require = require('lualine_require')
local M = lualine_require.require('lualine.component'):extend()

local default_options = {
  -- default, us, uk, iso, or format (ex. "%d/%m/%Y ...")
  style = 'default',
}

function M:init(options)
  M.super.init(self, options)
  self.options = vim.tbl_deep_extend('keep', self.options or {}, default_options)
end

function M:update_status()
  local fmt = self.options.style
  if self.options.style == 'default' then
    fmt = '%A, %B %d | %H:%M'
  elseif self.options.style == 'us' then
    fmt = '%m/%d/%Y'
  elseif self.options.style == 'uk' then
    fmt = '%d/%m/%Y'
  elseif self.options.style == 'iso' then
    fmt = '%Y-%m-%d'
  end

  return os.date(fmt)
end

return M