---
import Layout from '../layouts/Layout.astro';
import ContactForm from '../components/react/ContactForm';

interface ContactLink {
	kind: string;
	label: string;
	value: string;
}

interface SiteConfig {
	contact_intro?: string;
	contact_links?: ContactLink[];
}

const API_URL = process.env.PUBLIC_API_URL || 'http://localhost:3000';

let siteConfig: SiteConfig = {};
let error = '';

try {
	const res = await fetch(`${API_URL}/api/config`);
	if (res.ok) {
		siteConfig = await res.json();
	} else {
		error = 'Failed to load contact details.';
	}
} catch (e) {
	error = `Could not connect to backend: ${e instanceof Error ? e.message : String(e)}`;
	console.error(error);
}

const links: ContactLink[] = siteConfig.contact_links ?? [];
const intro = siteConfig.contact_intro ?? '';

const KIND_LABEL: Record<string, string> = {
	email: 'Email',
	mastodon: 'Mastodon',
	bluesky: 'Bluesky',
	github: 'GitHub',
	instagram: 'Instagram',
	url: 'Link',
};

function b64(s: string): string {
	return Buffer.from(s, 'utf-8').toString('base64');
}

function obfuscateEmail(addr: string): { user: string; host: string; display: string; u64: string; h64: string } | null {
	const at = addr.indexOf('@');
	if (at === -1) return null;
	const user = addr.slice(0, at);
	const host = addr.slice(at + 1);
	const display = `${user} [at] ${host.replace(/\./g, ' [dot] ')}`;
	return { user, host, display, u64: b64(user), h64: b64(host) };
}
---

<Layout title="Contact" description="Get in touch.">
	<section class="max-w-2xl mx-auto">
		<div class="mb-10 md:mb-14">
			<div class="font-display italic text-[var(--subtext0)] text-xs tracking-[0.3em] uppercase mb-4">Correspondence</div>
			<h1 class="font-display italic font-semibold text-[var(--text)] text-5xl md:text-6xl leading-[1.08] tracking-tight mb-6">
				Get in touch
			</h1>
			{intro && (
				<p class="font-sans text-lg text-[var(--subtext1)] leading-relaxed whitespace-pre-line">
					{intro}
				</p>
			)}
		</div>

		{error && (
			<div class="glass p-6 text-center mb-8 border-[var(--red)]/40">
				<p class="font-display italic text-[var(--red)]">{error}</p>
			</div>
		)}

		{links.length > 0 && (
			<ul class="space-y-3 mb-12">
				{links.map((link) => {
					const isEmail = link.kind === 'email';
					const obf = isEmail ? obfuscateEmail(link.value.trim()) : null;
					return (
						<li>
							<a
								href={obf ? '#' : link.value}
								{...(!isEmail ? { target: '_blank', rel: 'noopener noreferrer me' } : {})}
								{...(obf ? { 'data-mail': '', 'data-mail-u': obf.u64, 'data-mail-h': obf.h64 } : {})}
								class="group grid md:grid-cols-[1fr_minmax(0,auto)] gap-2 md:gap-6 px-5 md:px-6 py-4 md:items-baseline border border-[var(--surface2)]/60 hover:border-[var(--mauve)]/60 transition-colors"
								style="border-radius: 1px"
							>
								<div class="min-w-0">
									<div class="font-display italic text-[11px] uppercase tracking-[0.18em] text-[var(--subtext0)] mb-1 pr-1">
										{KIND_LABEL[link.kind] ?? link.kind}
									</div>
									<div class="font-display italic text-xl md:text-2xl text-[var(--text)] group-hover:text-[var(--mauve)] transition-colors break-words">
										{link.label}
									</div>
								</div>
								<div
									class="font-mono text-xs text-[var(--subtext0)] md:text-right break-words min-w-0"
									title={obf ? obf.display : link.value}
									data-mail-text={obf ? '' : undefined}
								>
									{obf ? obf.display : link.value}
								</div>
							</a>
						</li>
					);
				})}
			</ul>
		)}

		<div class="mt-8">
			<h2 class="font-display italic text-2xl md:text-3xl text-[var(--text)] border-l-2 border-[var(--mauve)] pl-4 mb-6">
				Or send a note directly
			</h2>
			<ContactForm client:idle />
		</div>

		<div class="section-rule mt-16">
			<span class="ornament">✦</span>
		</div>
	</section>
</Layout>

<script>
	function hydrateMail() {
		document.querySelectorAll<HTMLAnchorElement>('a[data-mail]').forEach((a) => {
			const u = a.dataset.mailU;
			const h = a.dataset.mailH;
			if (!u || !h) return;
			try {
				const user = atob(u);
				const host = atob(h);
				const addr = `${user}@${host}`;
				a.href = `mailto:${addr}`;
				a.querySelectorAll<HTMLElement>('[data-mail-text]').forEach((el) => {
					el.textContent = addr;
					el.setAttribute('title', addr);
				});
			} catch {
				// leave obfuscated form
			}
		});
	}
	if (document.readyState === 'loading') {
		document.addEventListener('DOMContentLoaded', hydrateMail);
	} else {
		hydrateMail();
	}
</script>