isle.pizza/worker/src/index.ts
2026-04-13 19:06:42 -07:00

289 lines
8.2 KiB
TypeScript

import AnimationTitles from '../../src/data/animation-titles.json';
import ActorDisplayNames from '../../src/data/actor-display-names.json';
import { fromUrlSafeBase64 } from '../../src/core/base64.js';
interface Env {
ASSETS: R2Bucket;
API_URL: string;
}
function escapeHtml(str: string): string {
return str
.replace(/&/g, '&')
.replace(/</g, '&lt;')
.replace(/>/g, '&gt;')
.replace(/"/g, '&quot;');
}
function formatDateTime(timestamp: number): string {
if (!timestamp) return '';
const d = new Date(timestamp * 1000);
const date = d.toLocaleDateString('en-US', { month: 'short', day: 'numeric', year: 'numeric' });
const time = d.toLocaleTimeString('en-US', { hour: 'numeric', minute: '2-digit' });
return `${date} \u00b7 ${time}`;
}
interface Participant {
n?: string;
displayName?: string;
c?: number;
charIndex?: number;
}
function buildDescription(participants: Participant[], timestamp?: number): string {
const parts: string[] = [];
for (const p of participants) {
const name = p.displayName || p.n || 'Unknown';
const charIndex = p.charIndex ?? p.c ?? 0;
const charName = (ActorDisplayNames as string[])[charIndex] || `#${charIndex}`;
parts.push(`${name} as ${charName}`);
}
if (timestamp) {
parts.push(formatDateTime(timestamp));
}
return parts.join(' \u00b7 ');
}
function injectOgTags(html: string, title: string, description: string, url: string): string {
const safeTitle = escapeHtml(title);
const safeDesc = escapeHtml(description);
const safeUrl = escapeHtml(url);
const fullTitle = `${safeTitle} — LEGO® Island`;
html = html.replace(/<title>[^<]*<\/title>/, `<title>${fullTitle}</title>`);
html = html.replace(
/(<meta\s+property="og:title"\s+content=")[^"]*(")/,
`$1${safeTitle}$2`
);
html = html.replace(
/(<meta\s+property="og:description"\s+content=")[^"]*(")/,
`$1${safeDesc}$2`
);
html = html.replace(
/(<meta\s+property="og:url"\s+content=")[^"]*(")/,
`$1${safeUrl}$2`
);
html = html.replace(
/(<meta\s+name="twitter:title"\s+content=")[^"]*(")/,
`$1${safeTitle}$2`
);
html = html.replace(
/(<meta\s+name="twitter:description"\s+content=")[^"]*(")/,
`$1${safeDesc}$2`
);
html = html.replace(
/(<meta\s+name="twitter:url"\s+content=")[^"]*(")/,
`$1${safeUrl}$2`
);
html = html.replace(
/(<meta\s+name="description"\s+content=")[^"]*(")/,
`$1${safeDesc}$2`
);
html = html.replace(
/(<link\s+rel="canonical"\s+href=")[^"]*(")/,
`$1${safeUrl}$2`
);
return html;
}
function getR2Prefix(request: Request): string {
const hostname = new URL(request.url).hostname;
return hostname.startsWith('dev.') ? 'dev/' : '';
}
async function getIndexHtml(request: Request, env: Env): Promise<string> {
const key = `${getR2Prefix(request)}index.html`;
const obj = await env.ASSETS.get(key);
if (!obj) throw new Error(`${key} not found in R2`);
return obj.text();
}
async function handleMemory(eventId: string, request: Request, env: Env): Promise<Response> {
const html = await getIndexHtml(request, env);
try {
const apiRes = await fetch(`${env.API_URL}/api/memory/${encodeURIComponent(eventId)}`);
if (!apiRes.ok) {
return new Response(html, { headers: { 'content-type': 'text/html; charset=utf-8' } });
}
const data = await apiRes.json() as {
animIndex: number;
participants: Participant[];
completedAt?: number;
};
const titles = AnimationTitles as Record<string, string>;
const title = titles[String(data.animIndex)] || `Animation #${data.animIndex}`;
const description = buildDescription(data.participants, data.completedAt);
const url = new URL(request.url);
return new Response(injectOgTags(html, title, description, url.href), {
headers: {
'content-type': 'text/html; charset=utf-8',
'cache-control': 'public, max-age=300',
},
});
} catch {
return new Response(html, { headers: { 'content-type': 'text/html; charset=utf-8' } });
}
}
async function handleScene(encoded: string, request: Request, env: Env): Promise<Response> {
const html = await getIndexHtml(request, env);
try {
const json = fromUrlSafeBase64(encoded);
const data = JSON.parse(json) as {
a: number;
p: Array<{ n: string; c: number }>;
t?: number;
};
const titles = AnimationTitles as Record<string, string>;
const title = titles[String(data.a)] || `Animation #${data.a}`;
const participants = data.p.map(p => ({ n: p.n, c: p.c }));
const description = buildDescription(participants, data.t);
const url = new URL(request.url);
return new Response(injectOgTags(html, title, description, url.href), {
headers: {
'content-type': 'text/html; charset=utf-8',
'cache-control': 'public, max-age=3600',
},
});
} catch {
return new Response(html, { headers: { 'content-type': 'text/html; charset=utf-8' } });
}
}
async function handleLatestMemories(request: Request, env: Env): Promise<Response> {
let html = await getIndexHtml(request, env);
const url = new URL(request.url);
html = injectOgTags(
html,
'Latest Memories',
'The most recent animations reenacted by players across all LEGO Islands.',
url.href
);
const origin = url.origin;
try {
const apiRes = await fetch(`${env.API_URL}/api/memories/latest`);
if (apiRes.ok) {
const data = await apiRes.json() as {
entries: Array<{
animIndex: number;
eventId: string;
completedAt: number;
participants: Participant[];
language: string;
}>;
};
const titles = AnimationTitles as Record<string, string>;
const items = data.entries.map((entry) => {
const title = escapeHtml(titles[String(entry.animIndex)] || `Animation #${entry.animIndex}`);
const desc = escapeHtml(buildDescription(entry.participants, entry.completedAt));
const url = `${origin}/memory/${escapeHtml(entry.eventId)}`;
return `<li><a href="${url}"><strong>${title}</strong><br>${desc}</a></li>`;
}).join('\n');
const ssrBlock = `<div id="ssr-latest-memories" style="display:none" aria-hidden="true"><h1>Latest Memories</h1><p>The most recent animations reenacted by players across all LEGO Islands.</p><ol>${items}</ol></div>`;
html = html.replace('</body>', `${ssrBlock}\n</body>`);
}
} catch {
// Fail gracefully — SPA will fetch client-side
}
return new Response(html, {
headers: {
'content-type': 'text/html; charset=utf-8',
'cache-control': 'public, max-age=300',
},
});
}
async function handleSitemap(request: Request, env: Env): Promise<Response> {
const origin = new URL(request.url).origin;
try {
const apiRes = await fetch(`${env.API_URL}/api/sitemap`);
if (!apiRes.ok) {
return new Response('Failed to fetch sitemap data', { status: 502 });
}
const data = await apiRes.json() as {
entries: Array<{ event_id: string; completed_at: number }>;
};
const urls: string[] = [
` <url>`,
` <loc>${escapeHtml(origin)}/</loc>`,
` </url>`,
` <url>`,
` <loc>${escapeHtml(origin)}/memories</loc>`,
` </url>`,
];
for (const entry of data.entries) {
const lastmod = new Date(entry.completed_at * 1000).toISOString().split('T')[0];
urls.push(
` <url>`,
` <loc>${escapeHtml(origin)}/memory/${escapeHtml(entry.event_id)}</loc>`,
` <lastmod>${lastmod}</lastmod>`,
` </url>`,
);
}
const xml = [
`<?xml version="1.0" encoding="UTF-8"?>`,
`<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">`,
...urls,
`</urlset>`,
].join('\n');
return new Response(xml, {
headers: {
'content-type': 'application/xml; charset=utf-8',
'cache-control': 'public, max-age=3600',
},
});
} catch {
return new Response('Failed to generate sitemap', { status: 500 });
}
}
export default {
async fetch(request: Request, env: Env): Promise<Response> {
const url = new URL(request.url);
const path = url.pathname;
if (path === '/sitemap.xml') {
return handleSitemap(request, env);
}
if (path === '/memories') {
return handleLatestMemories(request, env);
}
const memoryMatch = path.match(/^\/memory\/([A-Za-z0-9_-]+)$/);
if (memoryMatch) {
return handleMemory(memoryMatch[1], request, env);
}
const sceneMatch = path.match(/^\/scene\/([A-Za-z0-9_-]+)$/);
if (sceneMatch) {
return handleScene(sceneMatch[1], request, env);
}
return new Response('Not found', { status: 404 });
},
};