---
import Icon from '@components/Icon.astro';
---


<div class="theme-switcher">
    <button id="switch-to-dark">
        <Icon name="sun" />
    </button>
    <button id="switch-to-light">
        <Icon name="moon" />
    </button>
</div>


<style>
.theme-switcher {
    position: relative;
    isolation: isolate;
    width: 1.5rem;
    height: 1.5rem;

    transform: translateY(0.1rem);
}

button {
    position: absolute;
    inset: 0;

    background-color: transparent;
    padding: 0;
    color: var(--nav-link-color);
    border: none;

    &:hover {
        cursor: pointer;
        color: var(--accent-color);
    }

    /* hide by default, i.e. if JS isn't enabled and the data-theme attribute didn't get set, */
    visibility: hidden;
    opacity: 0;
    transition:
        color 0.2s ease,
        opacity 0.5s ease,
        transform 0.5s ease;
}

:global(html[data-theme="light"]) button#switch-to-dark {
    opacity: 1;
    visibility: visible;
    transform: rotate(360deg);
    /* whichever one is currently active should be on top */
    z-index: 10;
}
:global(html[data-theme="dark"]) button#switch-to-light {
    opacity: 1;
    visibility: visible;
    transform: rotate(-360deg);
    z-index: 10;
}
</style>

<script>
document.getElementById('switch-to-dark')?.addEventListener('click', () => {
    localStorage.setItem('theme-preference', 'dark');
    document.documentElement.dataset.theme = 'dark';
});
document.getElementById('switch-to-light')?.addEventListener('click', () => {
    localStorage.setItem('theme-preference', 'light');
    document.documentElement.dataset.theme = 'light';
})
</script>