local ls = require("luasnip")
local s = ls.snippet
local t = ls.text_node
local i = ls.insert_node
local f = ls.function_node

-- Function to get the datetime
--   with daylight saving time
--   according to the locale
local get_date = function()
  return os.date("%Y-%m-%dT%H:%M:%S%z")
end

-- Function to get an id based on the datetime 
local get_id = function()
  return os.date("%Y%m%d%H%M%S")
end

return {
  s(
    {
      trig = "datetime",
      dscr = "Insert datetime with locale daylight saving"
    },
    {
      f(get_date, {})
    }
  ),
  s(
    {
      trig = "id",
      dscr = "Insert an id based on the datetime"
    },
    {
      f(get_id, {})
    }
  ),
  s(
    {
      trig = "yaml",
      dscr = "Insert a YAML frontmatter for markdown"
    },
    {
      t { "---", "title: " },
      i(1, "title"),
      t{ "", "date: " },
      f(get_date, {}),
      t{ "", "id: " },
      f(get_id, {}),
      t{ "","tags: [" },
      i(2, "tags"),
      t{ "]", "---", "" },
      i(0),
    }
  )
}