// This file is part of the happyDeliver (R) project.
// Copyright (c) 2025 happyDomain
// Authors: Pierre-Olivier Mercier, et al.
//
// This program is offered under a commercial and under the AGPL license.
// For commercial licensing, contact us at <contact@happydomain.org>.
//
// For AGPL licensing:
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

import { browser } from "$app/environment";
import { writable } from "svelte/store";

const getInitialTheme = () => {
    if (!browser) return "light";

    const stored = localStorage.getItem("theme");
    if (stored === "light" || stored === "dark") return stored;

    return window.matchMedia("(prefers-color-scheme: dark)").matches ? "dark" : "light";
};

export const theme = writable<"light" | "dark">(getInitialTheme());

theme.subscribe((value) => {
    if (browser) {
        localStorage.setItem("theme", value);
        document.documentElement.setAttribute("data-bs-theme", value);
    }
});