--- Ensure plugins are installed
local ok, cmp, luasnip, luasnip_from_vscode, lspkind, cmp_autopairs = pcall(function()
	return require("cmp"),
		require("luasnip"),
		require("luasnip.loaders.from_vscode"),
		require("lspkind"),
		require("nvim-autopairs.completion.cmp")
end)

if not ok then
	return
end

--- loads vscode style snippets from installed plugins (e.g. friendly-snippets)
luasnip_from_vscode.lazy_load()

--- Plugin options
local opts = {
	completion = {
		completeopt = "menu,menuone,preview,noselect",
	},
	snippet = { -- configure how nvim-cmp interacts with snippet engine
		expand = function(args)
			luasnip.lsp_expand(args.body)
		end,
	},
	mapping = cmp.mapping.preset.insert({
		["<C-Space>"] = cmp.mapping.complete(), -- show completion suggestions
		["<C-e>"] = cmp.mapping.abort(), -- close completion window
		["<CR>"] = cmp.mapping.confirm({ select = false }),
	}),
	-- sources for autocompletion
	sources = cmp.config.sources({
		{ name = "nvim_lsp" },
		{ name = "luasnip" }, -- snippets
		{ name = "path" }, -- file system paths
		{ name = "buffer" }, -- text within current buffer
	}),
	-- configure lspkind for vs-code like pictograms in completion menu
	formatting = {
		format = lspkind.cmp_format({
			maxwidth = 50,
			ellipsis_char = "...",
		}),
	},
}

--- Load plugin
cmp.setup(opts)

--- Add autopairs

cmp.event:on(
	"confirm_done",
	cmp_autopairs.on_confirm_done({
		filetypes = {
			-- "*" is a alias to all filetypes
			["*"] = {
				["("] = {
					kind = {
						cmp.lsp.CompletionItemKind.Function,
						cmp.lsp.CompletionItemKind.Method,
					},
				},
			},
		},
	})
)