local M = {}

function M.themeselector()
    local themes = {
        "rose-pine-main",
        "rose-pine-moon",
        "rose-pine-dawn",
        "catppuccin-mocha",
        "catppuccin-latte",
        "nightfly",
        "tokyonight-night",
        "tokyonight-storm",
        "tokyonight-moon",
        "tokyonight-day",
        "dracula",
        "dracula-soft",
        "OceanicNext",
        "onelight",
        "onedark",
        "onedark_dark",
        "onedark_vivid",
        "doom-one",
        "moonlight",
        "mellow",
        "ofirkai",
        "kanagawa-lotus",
        "kanagawa-dragon",
        "kanagawa-wave",
    }

    local configDir = vim.fn.stdpath("config")
    local prefsFile = configDir .. "/lua/taken/prefs.lua"
    local oldstring = 'M.colorscheme = .*"'

    local opts = {
        prompt = "Select a theme",
    }

    local function change_theme(old, new)
        -- function from nvchad
        local file = io.open(prefsFile, "r")
        local added_pattern = string.gsub(old, "-", "%%-")
        local new_content = file:read("*all"):gsub(added_pattern, new)

        file = io.open(prefsFile, "w")
        file:write(new_content)
        file:close()
    end

    local exec = function(choice)

        if choice == nil then
            vim.notify("No theme selected!")
            return
        end

        vim.cmd("colorscheme " .. choice)
        local newstring = 'M.colorscheme = "' .. choice .. '"'
        change_theme(oldstring, newstring)
    end

    vim.ui.select(themes, opts, exec)
end

return M