--configure nvim-cmp for use with lsp and luasnip.


-- Add additional capabilities supported by nvim-cmp
local capabilities = vim.lsp.protocol.make_client_capabilities()
capabilities = require('cmp_nvim_lsp').update_capabilities(capabilities)


local lspconfig = require('lspconfig')

-- Enable some language servers with the additional completion capabilities offered by nvim-cmp
local servers = { 'clangd', 'rust_analyzer', 'pyright', 'tsserver' }
for _, lsp in ipairs(servers) do
	lspconfig[lsp].setup {
		-- on_attach = my_custom_on_attach,
		capabilities = capabilities,
	}
end

-- Set completeopt to have a better completion experience
vim.o.completeopt = 'menuone,noselect'

-- nvim-cmp setup
local cmp = require 'cmp'
cmp.setup {
	mapping = {
		['<C-p>'] = cmp.mapping.select_prev_item(),
		['<C-n>'] = cmp.mapping.select_next_item(),
		['<C-d>'] = cmp.mapping.scroll_docs(-4),
		['<C-f>'] = cmp.mapping.scroll_docs(4),
		['<C-Space>'] = cmp.mapping.complete(),
		['<C-e>'] = cmp.mapping.close(),
		['<CR>'] = cmp.mapping.confirm {
			behavior = cmp.ConfirmBehavior.Replace,
			select = true,
		},
		['<Tab>'] = function(fallback)
			if cmp.visible() then
				cmp.select_next_item()
			else
				fallback()
			end
		end,
		['<S-Tab>'] = function(fallback)
			if cmp.visible() then
				cmp.select_prev_item()
			else
				fallback()
			end
		end,
	},
	sources = {
		{ name = 'nvim_lsp' },
	},
}