nvim/lua/plugins/ui/lualine.lua

local M = require("lualine.component"):extend()

M.processing = false
M.spinner_index = 1

local spinner_symbols = {
    "⠋",
    "⠙",
    "⠹",
    "⠸",
    "⠼",
    "⠴",
    "⠦",
    "⠧",
    "⠇",
    "⠏",
}
local spinner_symbols_len = 10

-- Initializer
function M:init(options)
    M.super.init(self, options)

    local group = vim.api.nvim_create_augroup("CodeCompanionHooks", {})

    vim.api.nvim_create_autocmd({ "User" }, {
        pattern = "CodeCompanionRequest*",
        group = group,
        callback = function(request)
            if request.match == "CodeCompanionRequestStarted" then
                self.processing = true
            elseif request.match == "CodeCompanionRequestFinished" then
                self.processing = false
            end
        end,
    })
end

-- Function that runs every time statusline is updated
function M:update_status()
    if self.processing then
        self.spinner_index = (self.spinner_index % spinner_symbols_len) + 1
        return spinner_symbols[self.spinner_index]
    else
        return nil
    end
end

require('lualine').setup {
    options = {
        icons_enabled = true,
        theme = 'codedark',
        -- theme = 'dracula',
        -- theme = 'horizon',
        -- theme = 'onedark',
        component_separators = { left = '', right = '' },
        section_separators = { left = '', right = '' },
        disabled_filetypes = {},
        always_divide_middle = true,
    },
    sections = {
        lualine_a = { 'mode' },
        lualine_b = { 'branch', 'diff' },
        lualine_c = { 'filename', M },
        lualine_x = {
            {
                'diagnostics',
                'fileformat',
                symbols = {
                    unix = '', -- e712
                    dos = '', -- e70f
                    mac = '', -- e711
                }
            }, 'encoding', 'fileformat', { 'filetype', colored = true, icon_only = false } },
        lualine_y = { 'progress' },
        lualine_z = { 'location' }
    },
    inactive_sections = {
        lualine_a = {},
        lualine_b = {},
        lualine_c = {
            {
                'filename',
                file_status = true,        -- Displays file status (readonly status, modified status)
                path = 0,                  -- 0: Just the filename
                shorting_target = 40,      -- Shortens path to leave 40 spaces in the window
                symbols = {
                    modified = '[+]',      -- Text to show when the file is modified.
                    readonly = '[-]',      -- Text to show when the file is non-modifiable or readonly.
                    unnamed = '[No Name]', -- Text to show for unnamed buffers.
                }
            },
            M
        },
        lualine_x = { 'location' },
        lualine_y = {},
        lualine_z = {}
    },
    tabline = {},
    extensions = { 'quickfix', 'fzf', 'nvim-tree', 'symbols-outline', 'fugitive' }
}

-- return M