dotfiles/nvim/.config/nvim/lua/plugins/completion.lua

return {
	-- completion setup
	{
		"hrsh7th/nvim-cmp",
		branch = "main",
		version = false,
		dependencies = {
			"andersevenrud/cmp-tmux",
			"cbarrete/completion-vcard",
			"f3fora/cmp-spell",
			"hrsh7th/cmp-nvim-lsp",
			"hrsh7th/cmp-path",
			"hrsh7th/cmp-buffer",
			"hrsh7th/cmp-calc",
			"hrsh7th/cmp-cmdline",
			"hrsh7th/cmp-nvim-lsp-signature-help",
			"dmitmel/cmp-digraphs",
			"jc-doyle/cmp-pandoc-references",
			"kdheepak/cmp-latex-symbols",
			"lukas-reineke/cmp-rg",
			"crispgm/cmp-beancount",
			{ "ray-x/cmp-treesitter", dependencies = { "nvim-treesitter/nvim-treesitter" } },
			{
				"saadparwaiz1/cmp_luasnip",
				dependencies = {

					{
						"L3MON4D3/LuaSnip",
						dependencies = {
							"rafamadriz/friendly-snippets",
							{
								"benfowler/telescope-luasnip.nvim",
								dependencies = { { "nvim-telescope/telescope.nvim", optional = true } },
								config = function()
									require("telescope").load_extension("luasnip")
								end,
							},
						},
						build = "make install_jsregexp",
						config = function()
							require("luasnip.loaders.from_vscode").lazy_load({ exclude = { "markdown", "quarto" } })
							require("luasnip.loaders.from_snipmate").lazy_load()
						end,
					},
				},
			},
		},
		config = function()
			local luasnip = require("luasnip")
			local cmp = require("cmp")

			local has_words_before = function()
				---@diagnostic disable-next-line:deprecated
				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

			local kind_icons = {
				Text = "",
				Method = "",
				Function = "󰊕",
				Constructor = "",
				Field = "",
				Variable = "",
				Class = "",
				Interface = "",
				Module = "",
				Property = "",
				Unit = "",
				Value = "V",
				Enum = "",
				Keyword = "",
				Snippet = "",
				Color = "",
				File = "",
				Reference = "",
				Folder = "",
				EnumMember = "",
				Constant = "",
				Struct = "",
				Event = "",
				Operator = "",
				TypeParameter = "",
			}

			cmp.setup({
				window = { documentation = cmp.config.window.bordered() },
				snippet = {
					expand = function(args)
						require("luasnip").lsp_expand(args.body)
					end,
				},
				sources = {
					{
						name = "beancount",
						option = {
							account = vim.env["HOME"] .. "/documents/records/budget/main.beancount", -- TODO implement dynamically
						},
					},
					{ name = "nvim_lsp" },
					{ name = "nvim_lsp_signature_help" },
					{ name = "luasnip", keyword_length = 1 },
					{ name = "pandoc_references" },
					{ name = "calc" },
					{ name = "path" },
					{ name = "buffer", keyword_length = 3 },
					{ name = "latex_symbols" },
					{ name = "spell", keyword_length = 3 },
					{ name = "tmux" }, -- { name = 'rg',           keyword_length = 5 },
					{ name = "vCard" },
					{ name = "digraphs", keyword_length = 2 },
				},
				mapping = cmp.mapping.preset.insert({
					["<C-b>"] = cmp.mapping.scroll_docs(-4),
					["<C-f>"] = cmp.mapping.scroll_docs(4),
					["<CR>"] = cmp.mapping({
						i = function(fallback)
							if cmp.visible() and cmp.get_active_entry() then
								cmp.confirm({
									behavior = cmp.ConfirmBehavior.Replace,
									select = false,
								})
							else
								fallback()
							end
						end,
						s = cmp.mapping.confirm({ select = true }),
						c = cmp.mapping.confirm({
							behavior = cmp.ConfirmBehavior.Replace,
							select = false,
						}), -- disable selection in cmd mode
					}),
					["<Tab>"] = cmp.mapping(function(fallback)
						-- expand_or_jumpable() will always jump
						-- expand_or_locally_jumpable() only jumps when still inside snippet region
						if luasnip.expand_or_locally_jumpable() then
							luasnip.expand_or_jump()
						elseif cmp.visible() then
							cmp.select_next_item()
						elseif has_words_before() then
							cmp.complete()
						else
							fallback()
						end
					end, { "i", "s" }),
					["<S-Tab>"] = cmp.mapping(function(fallback)
						if luasnip.jumpable(-1) then
							luasnip.jump(-1)
						elseif cmp.visible() then
							cmp.select_prev_item()
						else
							fallback()
						end
					end, { "i", "s" }),
				}),
				formatting = {
					expandable_indicator = true,
					fields = { "kind", "abbr", "menu" },
					format = function(entry, vim_item)
						-- Kind icons, removing kind text leaving only icon
						-- vim_item.kind = string.format('%s %s', kind_icons[vim_item.kind], vim_item.kind)
						vim_item.kind = string.format("%s", kind_icons[vim_item.kind])

						-- Source
						vim_item.menu = ({
							buffer = "",
							calc = "󰃬",
							digraphs = "∬",
							latex_symbols = "𝓧",
							luasnip = "",
							nvim_lsp = "ℒ",
							nvim_lua = "󰢱",
							pandoc_references = "",
							spell = "󰓆",
							vCard = "󰛋",
						})[entry.source.name]
						return vim_item
					end,
				},
			})
			-- `/` cmdline setup.
			cmp.setup.cmdline("/", {
				mapping = cmp.mapping.preset.cmdline(),
				sources = { { name = "buffer" } },
			})
			-- `:` cmdline setup.
			cmp.setup.cmdline(":", {
				mapping = cmp.mapping.preset.cmdline(),
				sources = cmp.config.sources({ { name = "path" } }, {
					{ name = "cmdline", option = { ignore_cmds = { "Man", "!" } } },
				}),
			})
		end,
		event = { "InsertEnter", "CmdlineEnter" },
	},
}