local ls = require("luasnip")
local s = ls.snippet
local sn = ls.snippet_node
local t = ls.text_node
local i = ls.insert_node
local f = ls.function_node
local c = ls.choice_node
local d = ls.dynamic_node
local l = require("luasnip.extras").lambda
local r = require("luasnip.extras").rep
local p = require("luasnip.extras").partial
local m = require("luasnip.extras").match
local n = require("luasnip.extras").nonempty
local dl = require("luasnip.extras").dynamic_lambda
local types = require("luasnip.util.types")

local rec_ls
rec_ls = function()
	return sn(
		nil,
		c(1, {
			-- Order is important, sn(...) first would cause infinite loop of expansion.
			t(""),
			sn(nil, { t({ "", "\t\\item " }), i(1), d(2, rec_ls, {}) }),
		})
	)
end

return {
	s({ trig = "ul", dscr = "Itemize with endless items" }, {
		t({ "\\begin{itemize}", "\t\\item " }),
		i(1),
		d(2, rec_ls, {}),
		t({ "", "\\end{itemize}" }),
	}),
	s({ trig = "ol", dscr = "Enumerate with endless items" }, {
		t({ "\\begin{enumerate}", "\t\\item " }),
		i(1),
		d(2, rec_ls, {}),
		t({ "", "\\end{enumerate}" }),
	}),
	s({ trig = "sec", dscr = "Section" }, {
		c(1, {
			t '\\section{',
			t '\\subsection{',
			t '\\subsubsection{'
		}), i(2), t '}', i(0)
	}),
	s({ trig = "bf", dscr = "textbf" }, { t({ "\\textbf{" }), i(1), t({ "}" }), i(0) }),
	s({ trig = "it", dscr = "textit" }, { t({ "\\textit{" }), i(1), t({ "}" }), i(0) }),
	s({ trig = "rm", dscr = "textrm" }, { t({ "\\textrm{" }), i(1), t({ "}" }), i(0) }),
	s({ trig = "verb", dscr = "verb" }, { t({ "\\verb|" }), i(1), t({ "|" }), i(0) }),
	s({ trig = "frame", dscr = "New frame" }, { t { '\\begin{frame}', '\t' }, i(0), t { '', '\\end{frame}' } })
}