local ok, ls = pcall(require,"luasnip")
if not ok then
  vim.notify("Failed load luasnip\n")
end

local fmt = require("luasnip.extras.fmt")

local i = ls.insert_node
local t = ls.text_node
local rep = require("luasnip.extras").rep

ls.setup({
	history = true,
	update_events = "TextChanged,TextChangedI",
	enable_autosnippets = true,
})


-- ls.add_snippets("lua", {
-- 	ls.snippet("reqm", 
--     fmt.fmta(
-- 			[[
-- 				local ok, {} = pcall(require,"{}")
-- 				if not ok then
-- 					vim.notify("Failed load {}\n")
-- 				end
-- 			]], {
-- 				i(1, "mod"),
-- 				i(2),
-- 				rep(2),
-- 			}
--     )
--   )
-- })



ls.add_snippets("go", {
  ls.snippet("func",
    fmt.fmta(
      [[
        <>, err := <>
        if err != nil {
          <>
        }
      ]], {
        i(1, "out"),
        i(2, "func()"),
        i(3, "// some code")
      }
    )
  ),
  
  ls.snippet(
    "main",
    fmt.fmta(
      [[
        func main() {
        <><>
        }
      ]],
      { t("\t"), i(0) }
    )
  ),
})

-- Configuring keybinds
local mapopts = { silent = true, expr = true }

-- c-k is expansion key
vim.keymap.set({ "s", "i" }, "<C-k>", function()
  if ls.expand_or_jumpable() then
		ls.expand_or_jump()
	else
    return "<C-k>"
  end
end, mapopt)

-- c-j is jump backwards key
vim.keymap.set({ "s", "i" }, "<C-j>", function()
  if ls.jumpable(-1) then
    ls.jump(-1)
	else
    return "<C-j>"
  end
end, mapopt)

-- c-l is selecting withing a list of options
vim.keymap.set({ "s", "i" }, "<C-l>", function()
  if ls.choice_active() then
		ls.change_choice(1)
	else
    return "<C-l"
  end
end, mapopt)

require("luasnip/loaders/from_vscode").lazy_load()