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const RING_CACHE_KEY = "tarantino-ring-cache";
const RING_CACHE_TTL_MS = 5 * 60_000;
async function fetchRingMembers() {
const cached = localStorage.getItem(RING_CACHE_KEY);
if (cached) {
const { data, ts } = JSON.parse(cached);
if (Date.now() - ts < RING_CACHE_TTL_MS) return data;
}
const res = await fetch("https://gnu.mom/tarantino/ring.json");
if (!res.ok) throw new Error(`tarantino webring fetch failed: ${res.status}`);
const { members } = await res.json();
localStorage.setItem(RING_CACHE_KEY, JSON.stringify({ data: members, ts: Date.now() }));
return members;
}
function originOf(member) {
try {
return new URL(member.url).origin;
} catch (err) {
console.error("tarantino webring: bad url on member", member, err);
return null;
}
}
function warningLabel(m) {
return m.content_warnings?.length ? ` (cw: ${m.content_warnings.join(", ")})` : "";
}
function ensureWarningDialog() {
let dialog = document.getElementById("ring-warning-dialog");
if (dialog) return dialog;
dialog = document.createElement("dialog");
dialog.id = "ring-warning-dialog";
dialog.innerHTML = `
<p id="ring-warning-text"></p>
<menu style="display: flex; gap: 0.5rem; justify-content: flex-end; padding: 0; margin: 0.75rem 0 0;">
<button type="button" value="cancel">cancel</button>
<button type="button" value="continue" autofocus>continue</button>
</menu>
`;
dialog.style.cssText = `
background: var(--bg, #fff);
color: var(--text, #000);
border: 1px solid var(--border, #ccc);
border-radius: 6px;
max-width: 28rem;
padding: 1rem;
`;
document.body.appendChild(dialog);
dialog
.querySelector('button[value="cancel"]')
.addEventListener("click", () => dialog.close("cancel"));
dialog
.querySelector('button[value="continue"]')
.addEventListener("click", () => dialog.close("continue"));
return dialog;
}
function confirmIfFlagged(e, member) {
if (!member.content_warnings?.length) return;
e.preventDefault();
const dialog = ensureWarningDialog();
dialog.querySelector("#ring-warning-text").textContent =
`Heads up: this site is flagged for ${member.content_warnings.join(", ")}. Continue?`;
dialog.addEventListener(
"close",
() => {
if (dialog.returnValue === "continue") location.href = member.url;
},
{ once: true },
);
dialog.showModal();
}
function wireNavLink(id, member) {
const el = document.getElementById(id);
if (!el || !member) return;
el.href = member.url;
el.addEventListener("click", (e) => confirmIfFlagged(e, member));
}
function disableNavLink(id) {
const el = document.getElementById(id);
if (!el) return;
el.removeAttribute("href");
el.setAttribute("aria-disabled", "true");
}
function renderMembersTable(members) {
const tbody = document.getElementById("members-tbody");
if (!tbody) return;
const frag = document.createDocumentFragment();
for (const m of members) {
const tr = document.createElement("tr");
const nameTd = document.createElement("td");
nameTd.textContent = m.name;
const linkTd = document.createElement("td");
const a = document.createElement("a");
a.href = m.url;
a.textContent = m.url + warningLabel(m);
a.addEventListener("click", (e) => confirmIfFlagged(e, m));
linkTd.appendChild(a);
tr.append(nameTd, linkTd);
frag.appendChild(tr);
}
tbody.appendChild(frag);
}
async function initRing() {
try {
const members = await fetchRingMembers();
const me = members.findIndex((m) => originOf(m) === location.origin);
if (me === -1) {
console.error("this site is not in the tarantino webring");
} else if (members.length <= 1) {
disableNavLink("ring-prev");
disableNavLink("ring-next");
disableNavLink("ring-random");
} else {
const next = members[(me + 1) % members.length];
const prev = members[(me - 1 + members.length) % members.length];
const others = members.filter((_, i) => i !== me);
wireNavLink("ring-prev", prev);
wireNavLink("ring-next", next);
if (others.length > 0) {
const random = others[Math.floor(Math.random() * others.length)];
wireNavLink("ring-random", random);
} else {
disableNavLink("ring-random");
}
}
renderMembersTable(members);
} catch (err) {
console.error("tarantino webring failed:", err);
}
}
initRing();
|
