---
/**
 * LanguageSwitcher - Dropdown for language selection
 *
 * Usage:
 * ```astro
 * <LanguageSwitcher
 *   currentLang="en"
 *   languages={{ de: 'Deutsch', en: 'English', fr: 'Français', it: 'Italiano', es: 'Español' }}
 *   getLocalizedPath={(lang) => `/${lang}${currentPath}`}
 * />
 * ```
 */

export interface LanguageOption {
	code: string;
	label: string;
}

interface Props {
	currentLang: string;
	languages: Record<string, string>;
	getLocalizedPath?: (lang: string) => string;
	class?: string;
}

const {
	currentLang,
	languages,
	getLocalizedPath = (lang) => `/${lang}`,
	class: className = '',
} = Astro.props;

const languageEntries = Object.entries(languages);
---

<div class:list={['language-switcher', className]}>
	<button class="language-trigger" aria-haspopup="true" aria-expanded="false">
		<span class="language-current">{languages[currentLang] || currentLang.toUpperCase()}</span>
		<svg class="language-chevron" fill="none" stroke="currentColor" viewBox="0 0 24 24">
			<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 9l-7 7-7-7"
			></path>
		</svg>
	</button>

	<div class="language-dropdown" role="menu">
		{
			languageEntries.map(([code, label]) => (
				<a
					href={getLocalizedPath(code)}
					class:list={['language-option', { 'language-option-active': code === currentLang }]}
					role="menuitem"
					data-lang={code}
				>
					{label}
				</a>
			))
		}
	</div>
</div>

<style>
	.language-switcher {
		position: relative;
		display: inline-block;
	}

	.language-trigger {
		display: flex;
		align-items: center;
		gap: 6px;
		padding: 8px 12px;
		background: transparent;
		border: 1px solid var(--color-border);
		border-radius: 8px;
		color: var(--color-text-secondary);
		font-size: 0.875rem;
		font-weight: 500;
		cursor: pointer;
		transition: all 0.2s ease;
	}

	.language-trigger:hover {
		border-color: var(--color-border-hover);
		color: var(--color-text-primary);
	}

	.language-trigger:focus {
		outline: none;
		border-color: var(--color-primary);
		box-shadow: 0 0 0 2px var(--color-primary-glow);
	}

	.language-chevron {
		width: 16px;
		height: 16px;
		transition: transform 0.2s ease;
	}

	.language-switcher.open .language-chevron {
		transform: rotate(180deg);
	}

	.language-dropdown {
		position: absolute;
		top: calc(100% + 4px);
		right: 0;
		min-width: 140px;
		background: var(--color-background-card);
		border: 1px solid var(--color-border);
		border-radius: 8px;
		box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.5);
		opacity: 0;
		visibility: hidden;
		transform: translateY(-8px);
		transition: all 0.2s ease;
		z-index: 100;
		overflow: hidden;
	}

	.language-switcher.open .language-dropdown {
		opacity: 1;
		visibility: visible;
		transform: translateY(0);
	}

	.language-option {
		display: block;
		padding: 10px 16px;
		color: var(--color-text-secondary);
		text-decoration: none;
		font-size: 0.875rem;
		transition: all 0.15s ease;
	}

	.language-option:hover {
		background: var(--color-background-card-hover);
		color: var(--color-text-primary);
	}

	.language-option-active {
		color: var(--color-primary);
		background: var(--color-primary-glow);
	}

	.language-option-active:hover {
		background: var(--color-primary-glow);
		color: var(--color-primary);
	}
</style>

<script>
	// Toggle dropdown on click
	document.querySelectorAll('.language-switcher').forEach((switcher) => {
		const trigger = switcher.querySelector('.language-trigger');

		trigger?.addEventListener('click', (e) => {
			e.stopPropagation();
			switcher.classList.toggle('open');
		});
	});

	// Close dropdown when clicking outside
	document.addEventListener('click', () => {
		document.querySelectorAll('.language-switcher.open').forEach((switcher) => {
			switcher.classList.remove('open');
		});
	});

	// Close on escape key
	document.addEventListener('keydown', (e) => {
		if (e.key === 'Escape') {
			document.querySelectorAll('.language-switcher.open').forEach((switcher) => {
				switcher.classList.remove('open');
			});
		}
	});
</script>