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path: root/apps/kit/src/lib/components/locale-switcher.svelte
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<script lang="ts">
    import { browser } from "$app/environment";
    import { page } from "$app/stores";
    import { CookieNames } from "$lib/configuration";
    import { set_cookie } from "$lib/helpers";
    import { setLocale, locale } from "$lib/i18n/i18n-svelte";
    import type { Locales } from "$lib/i18n/i18n-types";
    import { locales } from "$lib/i18n/i18n-util";
    import { loadLocaleAsync } from "$lib/i18n/i18n-util.async";
    import Cookies from "js-cookie";

    const switchLocale = async (newLocale: Locales) => {
        if (!newLocale || $locale === newLocale) return;
        await loadLocaleAsync(newLocale);
        setLocale(newLocale);
        document.querySelector("html")?.setAttribute("lang", newLocale);
        set_cookie(CookieNames.locale, newLocale);
        Cookies.set(CookieNames.locale, newLocale, {
            sameSite: "strict",
            domain: location.hostname,
        });
        console.log("Switched to: " + newLocale);
    };

    $: if (browser) {
        switchLocale($page.params.lang as Locales);
    }
</script>

<ul>
    {#each locales as aLocale}
        <li>
            <button type="button" class:active={aLocale === $locale} on:click={() => switchLocale(aLocale)}>
                {aLocale}
            </button>
        </li>
    {/each}
</ul>