absolute-vim/lua/absolute/after/lualine.lua

local lualine = require("lualine")
local lazy_status = require("lazy.status")     -- to configure lazy pending updates count
local molten_status = require("molten.status") -- to configure molten statusline

local colors = {
    blue = "#65D1FF",
    green = "#3EFFDC",
    violet = "#FF61EF",
    yellow = "#FFDA7B",
    red = "#FF4A4A",
    fg = "#c3ccdc",
    bg = "#112638",
    inactive_bg = "#2c3043",
}

local my_lualine_theme = {
    normal = {
        a = { bg = colors.blue, fg = colors.bg, gui = "bold" },
        b = { bg = colors.bg, fg = colors.fg },
        c = { bg = colors.bg, fg = colors.fg },
    },
    insert = {
        a = { bg = colors.green, fg = colors.bg, gui = "bold" },
        b = { bg = colors.bg, fg = colors.fg },
        c = { bg = colors.bg, fg = colors.fg },
    },
    visual = {
        a = { bg = colors.violet, fg = colors.bg, gui = "bold" },
        b = { bg = colors.bg, fg = colors.fg },
        c = { bg = colors.bg, fg = colors.fg },
    },
    command = {
        a = { bg = colors.yellow, fg = colors.bg, gui = "bold" },
        b = { bg = colors.bg, fg = colors.fg },
        c = { bg = colors.bg, fg = colors.fg },
    },
    replace = {
        a = { bg = colors.red, fg = colors.bg, gui = "bold" },
        b = { bg = colors.bg, fg = colors.fg },
        c = { bg = colors.bg, fg = colors.fg },
    },
    inactive = {
        a = { bg = colors.inactive_bg, fg = colors.semilightgray, gui = "bold" },
        b = { bg = colors.inactive_bg, fg = colors.semilightgray },
        c = { bg = colors.inactive_bg, fg = colors.semilightgray },
    },
}

function GetPoetvStatusLine()
    -- Get the poetv statusline
    -- If poetv is not active, return empty string

    if IsPoetvActive() then
        local poetv_name = vim.g.poetv_name
        local poetv_statusline_symbol = vim.g.poetv_statusline_symbol

        local result = string.sub(poetv_name, 1, 20) .. " " .. poetv_statusline_symbol

        return result
    else
        return ""
    end
end

function IsPoetvActive()
    -- Check if vim.g.poetv_name exists
    -- If it does, then poetv is active

    if vim.g.poetv_name ~= nil then
        return true
    else
        return false
    end
end

-- configure lualine with modified theme
lualine.setup({
    options = {
        theme = my_lualine_theme,
    },
    sections = {
        lualine_x = {
            {
                molten_status.initialized,
            },
            {
                molten_status.kernels,
            },
            {
                GetPoetvStatusLine,
                cond = IsPoetvActive,
                color = { fg = "#ff9e64" },
            },
            {
                lazy_status.updates,
                cond = lazy_status.has_updates,
                color = { fg = "#ff9e64" },
            },
            { "encoding" },
            { "fileformat" },
            { "filetype" },
        },
    },
})