nvim-config/lua/configs/bufferline.lua

local M = {}

function M.config()
	local status_ok, bufferline = pcall(require, "bufferline")
		if not status_ok then
		return
	end

	-- Semantic Colors
	local scolors = {
		white_fg = '#ced2dc',

		tab_visible_bg = '#404040',
		tab_bg = '#353535',
		empty_bg = '#252526',

		green = '#6a9955',
		yellow = '#d8b92d',
		red = '#d16969',
		none = 'NONE',
	}

	bufferline.setup {
		options = {
			close_command = "Bdelete! %d", -- use vim-bbye
			right_mouse_command = "Bdelete! %d", -- use vim-bbye
			offsets = {
				{
					filetype = "NvimTree",
					text = "",
					padding = 1
				}
			},
			indicator = {
				icon = '▎',
				style = 'icon'
			},
			modified_icon = "",
			--buffer_close_icon = "",
			show_buffer_close_icons = false,
			--close_icon = "",
			show_close_icon = false,
			left_trunc_marker = "",
			right_trunc_marker = "",
			tab_size = 12, -- minimum size
			max_name_length = 40,
			max_prefix_length = 13,
			show_tab_indicators = true,
			enforce_regular_tabs = false,
			view = "multiwindow",
			separator_style = "thick",
			always_show_bufferline = true,
			diagnostics = false,
		},

		highlights = {
			fill = {
				fg = scolors.white_fg,
				bg = scolors.empty_bg,
			},
			background = {
				fg = scolors.white_fg,
				bg = scolors.tab_bg,
			},

			-- Buffers
			buffer_selected = {
				fg = scolors.white_fg,
				bg = scolors.tab_visible_bg,
				--gui = colors.none,
			},
			buffer_visible = {
				fg = scolors.white_fg,
				bg = scolors.tab_visible_bg,
			},

			-- Diagnostics
			error = {
				fg = scolors.red,
				bg = scolors.red,
			},
			error_diagnostic = {
				fg = scolors.red,
				bg = scolors.red,
			},

			-- Close buttons
			close_button = {
				fg = scolors.white_fg,
				bg = scolors.tab_bg,
			},
			close_button_visible = {
				fg = scolors.white_fg,
				bg = scolors.tab_visible_bg,
			},
			close_button_selected = {
				fg = scolors.red,
				bg = scolors.tab_visible_bg,
			},

			-- Open buffer indicator
			indicator_selected = {
				fg = scolors.green,
				bg = scolors.tab_visible_bg,
			},
			indicator_visible = {
				bg = scolors.tab_visible_bg,
			},

			-- Modified
			modified = {
				fg = scolors.yellow,
				bg = scolors.tab_bg,
			},
			modified_visible = {
				fg = scolors.yellow,
				bg = scolors.tab_visible_bg,
			},
			modified_selected = {
				fg = scolors.yellow,
				bg = scolors.tab_visible_bg,
			},

			-- Separators
			separator = {
				fg = scolors.empty_bg,
				bg = scolors.tab_bg,
			},
			separator_visible = {
				fg = scolors.empty_bg,
				bg = scolors.tab_visible_bg,
			},
			separator_selected = {
				fg = scolors.empty_bg,
				bg = scolors.tab_visible_bg,
			},

			-- Tabs
			tab = {
				fg = scolors.white_fg,
				bg = scolors.tab_bg,
			},
			tab_selected = {
				fg = scolors.white_fg,
				bg = scolors.tab_visible_bg,
			},
			tab_close = {
				fg = scolors.white_fg,
				bg = scolors.tab_visible_bg,
			},
		}
	}
end

return M