local cmp = require'cmp'

local cmpStatus, cmp = pcall(require, "cmp")
if (not cmpStatus) then
  print("cmp is not installed")
  return
end

cmp.setup({
  snippet = {
    expand = function(args)
      require('luasnip').lsp_expand(args.body)
    end,
  },
  mapping = cmp.mapping.preset.insert({
    ["<Tab>"] = cmp.mapping(function(fallback)
      if cmp.visible() then
        local entry = cmp.get_selected_entry()
        if not entry then
          cmp.select_next_item({ behavior = cmp.SelectBehavior.Select })
        else
          cmp.confirm()
        end
      else
        fallback()
      end
    end, {"i","s","c",}),
  }),
  sources = cmp.config.sources({
    { name = 'nvim_lsp' },
    { name = 'buffer' },
  })
})