Make colorscheme change when background change

Question

I have a shortcut to set the background light, dark, or transparent. I want to use a different color scheme for when it is dark or light.

How would I go about implementing it?

I don't know programming and this is my failed try.

if vim.cmd("set background") == "background=light" then
    vim.cmd("colorscheme modus-operandi")
end

I think I need something like this, but in lua.

Here is my config.

Answer 1

I would do:

if vim.o.background == 'dark' then
    print("dark")
    vim.cmd("colorscheme modus-vivendi")
    -- vim.cmd("colorscheme dracula")
else
    print('light')
    vim.cmd("colorscheme modus-operandi")
    -- vim.cmd("colorscheme gruvbox")
end

vim.api.nvim_create_autocmd({"OptionSet"}, {
    pattern = {"background"},
    callback = function(ev)
        if vim.o.background == 'dark' then
            print('late dark')
            vim.cmd("colorscheme modus-vivendi")
            -- vim.cmd("colorscheme dracula")
        else
            print('late light')
            vim.cmd("colorscheme modus-operandi")
            -- vim.cmd("colorscheme gruvbox")
        end
        -- force a full redraw:
        vim.cmd("mode")
    end
})