dotfiles/vim/lua/lightline_config.lua

require("nvim-web-devicons").setup({})

local mode_map = {
	NORMAL = "N",
	INSERT = "I",
	REPLACE = "R",
	COMMAND = "C",
	VISUAL = "v",
	["V-BLOCK"] = "V",
	["V-LINE"] = "V-LINE",
}

local function format_diff_element(val, sym)
	if val == nil or val < 1 then
		return ""
	end

	return sym .. val
end

require("lualine").setup({
	options = {
		icons_enabled = false,
		theme = "nord",
	},
	sections = {
		lualine_a = {
			{
				"mode",
				fmt = function(mode)
					return mode_map[mode] or mode
				end,
			},
			"paste",
		},
		lualine_b = { "filename" },
		lualine_c = {
			{
				"branch",
				padding = { left = 0 },
			},
			-- render coloured output from gitsigns, this doesn't seem to work with b:gitsigns_status:
			{
				function()
					return format_diff_element(vim.b.gitsigns_status_dict.added, "+")
				end,
				color = { fg = "#a3be8c" },
				padding = 0,
			},
			{
				function()
					return format_diff_element(vim.b.gitsigns_status_dict.changed, "~")
				end,
				color = { fg = "#ebcb8b" },
				padding = 0,
			},
			{
				function()
					return format_diff_element(vim.b.gitsigns_status_dict.removed, "-")
				end,
				color = { fg = "#bf616a" },
				padding = 0,
			},
			{
				"diagnostics",
				sources = { "nvim_lsp" },
				always_visible = false,
				symbols = {
					error = function(count)
						return count .. "E"
					end,
					warn = function(count)
						return count .. "W"
					end,
					info = function(count)
						return count .. "I"
					end,
					hint = function(count)
						return count .. "H"
					end,
				},
			},
		},
		lualine_x = {
			{
				function()
					local go_status_line = vim.api.nvim_call_function("go#statusline#Show", {})
					if go_status_line ~= "" then
						return go_status_line
					end

					return vim.bo.filetype
				end,
				padding = { left = 1, right = 0 },
			},
		},
		lualine_y = { { "progress", padding = { left = 1, right = 0 } } },
		lualine_z = { { "location", padding = { left = 1, right = 1 } } },
	},
	inactive_sections = {
		lualine_a = {},
		lualine_b = {},
		lualine_c = { "filename" },
		lualine_x = { { "location", padding = { right = 0 } } },
		lualine_y = {},
		lualine_z = {},
	},
})