local cmp = require("cmp")
local lspkind = require("lspkind")
local border = require('409.ui').border

local cmp_select = { behavior = cmp.SelectBehavior.Select }
local winhighlight = "Normal:CmpPmenu,FloatBorder:CmpPmenuBorder,CursorLine:PmenuSel,Search:None"


cmp.setup({
	snippet = {
		expand = function(args)
			require("luasnip").lsp_expand(args.body)
		end,
	},
	sources = {
		{ name = "nvim_lsp" },
		{ name = "path" },
		{ name = "nvim_lsp_signature_help" },
		{ name = "nvim_lua" },
		{ name = "luasnip", keyword_length = 2 },
		{ name = "buffer", keyword_length = 3 },
	},
	view = {
		entries = "custom",
	},
	completion = {
		completeopt = "menuone,noselect,preview",
		docs_initially_visible = true,
	},
	window = {
		documentation = {
			border = border,
			winhighlight = winhighlight,
		},
		completion = {
			border = border,
			winhighlight = winhighlight,
		},
	},

	formatting = {
		fields = { "kind", "abbr", "menu" },
		format = function(entry, vim_item)
			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,
	},
	mapping = cmp.mapping.preset.insert({
		["<C-p>"] = cmp.mapping.select_prev_item(cmp_select),
		["<C-n>"] = cmp.mapping.select_next_item(cmp_select),
		["<C-k>"] = cmp.mapping.scroll_docs(-4),
		["<C-j>"] = cmp.mapping.scroll_docs(4),
		["<C-y>"] = cmp.mapping.confirm({ select = true }),
		["<C-g>"] = cmp.mapping.complete(),
		["<Tab>"] = nil,
		["<S-Tab>"] = nil,
	}),
})