nvim/lua/plugins/cmp.lua

return {
	'hrsh7th/nvim-cmp',
	-- lazy = false,
	dependencies = {
		{ 'honza/vim-snippets' },
		{ 'dcampos/nvim-snippy' },
		{ 'dcampos/cmp-snippy' },
		'hrsh7th/cmp-nvim-lsp',
		'hrsh7th/cmp-buffer',
		'hrsh7th/cmp-cmdline',
		'hrsh7th/cmp-path',
		'windwp/nvim-autopairs',
	},
	event = { 'InsertEnter', 'CmdlineEnter' },
	version = false,
	config = function()
		local cmp = require 'cmp'
		local utils = require 'config.utils'

		cmp.setup {
			-- enabled = function()
			-- 	return vim.api.nvim_buf_get_option(0, 'buftype') ~= 'prompt' or require('cmp_dap').is_dap_buffer()
			-- end,
			view = {
				entries = {
					name = 'custom', -- can be "custom", "wildmenu" or "native"
					-- separator = ' | ',
				},
			},
			completion = {
				autocomplete = { 'TextChanged', 'CmdlineChanged', 'TextChangedP' },
				-- autocomplete = false,
			},
			snippet = {
				expand = function(args)
					require('snippy').expand_snippet(args.body)
				end,
			},
			window = {
				completion = cmp.config.window.bordered(),
				documentation = cmp.config.window.bordered(),
			},
			experimental = {
				ghost_text = true,
			},
			formatting = {
				fields = { 'abbr', 'kind', 'menu' },
				format = function(_, item)
					local ELLIPSIS_CHAR = '…'
					local MAX_LABEL_WIDTH = 25
					item.kind = string.format('%s', item.kind) -- This concatonates the icons with the name of the item kind

					local label = item.abbr
					local truncated_label = vim.fn.strcharpart(label, 0, MAX_LABEL_WIDTH)
					if truncated_label ~= label then
						item.abbr = truncated_label .. ELLIPSIS_CHAR
					end
					return item
				end,
			},
			mapping = {
				['<C-k>'] = cmp.mapping.select_prev_item(),
				['<C-j>'] = cmp.mapping.select_next_item(),
				['<C-b>'] = cmp.mapping(cmp.mapping.scroll_docs(-4), { 'i', 'c' }),
				['<C-f>'] = cmp.mapping(cmp.mapping.scroll_docs(4), { 'i', 'c' }),
				['<C-Space>'] = cmp.mapping(cmp.mapping.complete(), { 'i', 'c' }),
				['<C-e>'] = cmp.mapping {
					i = cmp.mapping.abort(),
					c = cmp.mapping.close(),
				},
				['<CR>'] = cmp.mapping.confirm { select = true },
				['<Tab>'] = cmp.mapping(function(fallback)
					if cmp.visible() then
						cmp.select_next_item { behavior = cmp.SelectBehavior.Select }
					elseif require('snippy').can_expand_or_advance() then
						require('snippy').expand_or_advance()
					elseif utils.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 { behavior = cmp.SelectBehavior.Insert }
					elseif require('snippy').can_jump(-1) then
						require('snippy').previous()
					else
						fallback()
					end
				end, { 'i', 's' }),
			},
			sources = {
				{ name = 'nvim_lsp' },
				{ name = 'snippy' },
				{ name = 'path' },
				{ name = 'buffer' },
			},
		}
		cmp.setup.cmdline(':', {
			completion = { autocomplete = { 'TextChanged', 'CmdlineChanged', 'TextChanged' } },
			mapping = cmp.mapping.preset.cmdline(),
			sources = {
				{ name = 'cmdline' },
			},
			-- view = {
			-- 	entries = { name = 'wildmenu', separator = ' · ' },
			-- },
		})

		-- cmp.setup.cmdline('/', {
		-- 	sources = {
		-- 		{ name = 'buffer' },
		-- 	},
		-- view = {
		-- 	entries = { name = 'wildmenu', separator = ' · ' },
		-- },
		-- })

		-- cmp.setup.filetype({ 'dap-repl', 'dapui_watches', 'dapui_hover' }, {
		-- 	sources = {
		-- 		{ name = 'dap' },
		-- 	},
		-- })

		local npairs = require 'nvim-autopairs'
		npairs.setup {
			check_ts = true, -- treesitter integration
			fast_wrap = {
				map = '<C-e>',
				highlight = 'Search',
				highlight_grey = 'Comment',
			},
			map_c_w = true,
			-- disable_filetype = { "TelescopePrompt" },
		}

		local cmp_autopairs = require 'nvim-autopairs.completion.cmp'
		cmp.event:on('confirm_done', cmp_autopairs.on_confirm_done {})
	end,
}