125 lines
3.1 KiB
JavaScript
125 lines
3.1 KiB
JavaScript
"use strict";
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const api = {
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async get(url) {
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const r = await fetch(url, { credentials: "same-origin" });
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return r.json();
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},
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async post(url, formData) {
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const r = await fetch(url, {
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method: "POST",
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body: formData,
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credentials: "same-origin",
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});
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return { ok: r.ok, status: r.status, data: await r.json().catch(() => ({})) };
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},
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};
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function escapeHtml(s) {
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const d = document.createElement("div");
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d.textContent = s ?? "";
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return d.innerHTML;
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}
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function linkify(s) {
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const escaped = escapeHtml(s);
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const url = /https?:\/\/[^\s<]+/g;
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return escaped
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.replace(url, (m) => `<a href="${m}" target="_blank" rel="noopener">${m}</a>`)
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.replace(/\n/g, "<br>");
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}
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function renderEntry(e) {
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const el = document.createElement("article");
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el.className = "card";
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const when = new Date(e.created_at * 1000).toLocaleString("de-DE");
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const user = encodeURIComponent(e.username);
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let media = "";
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if (e.filepath) {
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media = `<img src="/${e.filepath}" alt="" loading="lazy">`;
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}
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el.innerHTML = `
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<div class="muted"><a href="/u/${user}">${escapeHtml(e.username)}</a> · ${when}</div>
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<div class="content">${linkify(e.content)}</div>
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${media}
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<div class="row">
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<button class="ghost" data-mode="left">Links</button>
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<span class="muted">– / –</span>
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<button class="ghost" data-mode="right">Rechts</button>
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</div>
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`;
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setupVoting(el, e.pid);
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return el;
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}
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function setupVoting(el, pid) {
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const box = el.querySelector(".row");
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const counts = box.querySelector("span");
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const buttons = box.querySelectorAll(".ghost");
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function render(state) {
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if (state.error) {
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counts.textContent = state.error;
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return;
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}
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counts.textContent = `${state.left} / ${state.right}`;
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buttons.forEach((b) =>
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b.classList.toggle("selected", b.dataset.mode === state.selected)
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);
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}
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buttons.forEach((b) =>
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b.addEventListener("click", async () => {
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const fd = new FormData();
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fd.append("mode", b.dataset.mode);
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const res = await api.post(`/entry/${pid}/vote`, fd);
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render(res.data);
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})
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);
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api.get(`/entry/${pid}/votes`).then(render);
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}
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// createFeed hängt Infinite-Scroll an feedEl/sentinelEl und lädt Seiten über
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// urlFor(page). Gibt { reset } zurück, um den Feed neu zu laden.
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function createFeed(feedEl, sentinelEl, urlFor) {
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let page = 0;
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let loading = false;
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let done = false;
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async function loadMore() {
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if (loading || done) return;
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loading = true;
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const entries = await api.get(urlFor(page));
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if (!entries.length) {
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done = true;
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const end = document.createElement("p");
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end.className = "muted";
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end.textContent = "YOU REACHED THE END!";
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feedEl.appendChild(end);
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} else {
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entries.forEach((e) => feedEl.appendChild(renderEntry(e)));
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page++;
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}
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loading = false;
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}
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function reset() {
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page = 0;
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done = false;
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feedEl.innerHTML = "";
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loadMore();
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}
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const observer = new IntersectionObserver((items) => {
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if (items.some((i) => i.isIntersecting)) loadMore();
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});
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observer.observe(sentinelEl);
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loadMore();
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return { reset };
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}
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