local ok, cmp = pcall(require, "cmp")
if not ok then
	return
end

local luasnip_ok, luasnip = pcall(require, "luasnip")
if not luasnip_ok then
	return
end

local luasnip_vscode_ok, luasnip_vscode = pcall(require, "luasnip/loaders/from_vscode")
if not luasnip_vscode_ok then
	return
end

local has_words_before = function()
	unpack = unpack or table.unpack
	local line, col = unpack(vim.api.nvim_win_get_cursor(0))
	return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
end

luasnip_vscode.lazy_load()

cmp.setup({
	view = {
		--entries = { name = "custom", selection_order = "near_cursor" },
	},
	snippet = {
		expand = function(args)
			luasnip.lsp_expand(args.body) -- For `luasnip` users.
		end,
	},
	mapping = {
		["<CR>"] = cmp.mapping.confirm({ select = true }),
		["<Tab>"] = cmp.mapping(function(fallback)
			if cmp.visible() then
				cmp.select_next_item()
				-- You could replace the expand_or_jumpable() calls with expand_or_locally_jumpable()
				-- they way you will only jump inside the snippet region
			elseif luasnip.expand_or_jumpable() then
				luasnip.expand_or_jump()
			elseif has_words_before() then
				cmp.complete()
			else
				fallback()
			end
		end, { "i", "s" }),
		["<S-Tab>"] = cmp.mapping(function(fallback)
			if cmp.visible() then
				cmp.select_prev_item()
			elseif luasnip.jumpable(-1) then
				luasnip.jump(-1)
			else
				fallback()
			end
		end, { "i", "s" }),
	},
	sources = {
		{ name = "nvim_lsp" },
		{ name = "luasnip" },
		{ name = "buffer" },
		{ name = "path" },
	},
	confirm_opts = {
		behavior = cmp.ConfirmBehavior.Replace,
		select = false,
	},
	experimental = {
		ghost_text = false,
	},
	formatting = {
		fields = { "kind", "abbr", "menu" },
		format = function(entry, vim_item)
			local lk_ok, lspkind = pcall(require, "lspkind")
			if not lk_ok then
				return
			end
			local kind = lspkind.cmp_format({ mode = "symbol_text", maxwidth = 50 })(entry, vim_item)
			local strings = vim.split(kind.kind, "%s", { trimempty = true })
			kind.kind = " " .. (strings[1] or "") .. " "
			kind.menu = "    (" .. (strings[2] or "") .. ")"

			return kind
		end,
	},
})