nvim/lua/plugins/tabline.lua

return {
	"nvim-lualine/lualine.nvim",
	dependencies = {
		{ "kyazdani42/nvim-web-devicons", lazy = true },
		"crater2150/vim-theme-chroma",
		{
			"linrongbin16/lsp-progress.nvim",
			config = function()
				require("lsp-progress").setup()
			end,
		},
	},
	event = "VeryLazy",
	opts = function(_, opts)
		return {
			options = {
				theme = require("chroma-theme.lualine"),
			},
			tabline = {
				lualine_a = { "branch" },
				lualine_b = {},
				lualine_c = {
					{
						"buffers",
						show_filename_only = false,
						symbols = { modified = " ✏️]", alternate_file = " 🔃", folder = " 📁" },
					},
				},
				lualine_x = {},
				lualine_y = {},
				lualine_z = {
					{
						"tabs",
						mode = 1,
						fmt = function(name, context)
							local buflist = vim.fn.tabpagebuflist(context.tabnr)
							local mod = not vim.tbl_isempty(vim.tbl_filter(function(bufnr)
								return vim.fn.getbufvar(bufnr, "&mod") == 1
							end, buflist))

							local wincount = #vim.tbl_filter(function(i)
								return i == "leaf"
							end, vim.tbl_flatten(vim.fn.winlayout(context.tabnr)))

							return name
								.. (wincount > 1 and " +" .. (wincount - 1) or "")
								.. (mod and " [✏️]]" or "")
						end,
					},
				},
			},
			sections = {
				lualine_a = { "filename" },
				lualine_b = { "diff", "diagnostics" },
				lualine_x = {
					function()
						-- invoke `progress` here.
						return require("lsp-progress").progress()
					end,
				},
				lualine_y = { "filetype" },
				lualine_z = { "searchcount", "selectioncount", "location" },
			},
			inactive_sections = {
				lualine_a = {},
				lualine_b = {},
				lualine_c = { "filename" },
				lualine_x = { "location" },
				lualine_y = {},
				lualine_z = {},
			},
			winbar = {},
			inactive_winbar = {},
			extensions = {},
		}
	end,
	config = function(_, opts)
		require("lualine").setup(opts)
		vim.api.nvim_create_augroup("lualine_augroup", { clear = true })
		vim.api.nvim_create_autocmd("User", {
			group = "lualine_augroup",
			pattern = "LspProgressStatusUpdated",
			callback = require("lualine").refresh,
		})
	end,
}