local site = (...);
site.bg = 0xF;
site.fg = 0x0;

local EMPTY_STRING = '';

local format = _G.string.format;
local char = _G.string.char;

local WHITESPACE = char(32);

local STYLE_HEADER = {
    backgroundColor = 0x0;
    foregroundColor = 0x7;
};

function site:header(text, style)
    local r = #text / 2;
    local m = r % 1;
    if (m == 0) then
        local padding = WHITESPACE:rep(r);
        site:text(format("%s%s%s", padding, text, padding), style);
    else
        local padding = WHITESPACE(r-m);
        site:text(format("%s%s%s ", padding, text, padding), style);
    end
end

function site:draw()
    site:header("HELLO WORLD!", STYLE_HEADER);
end