first commit

frontend/app.js

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+/* VV frontend: лента (scroll-snap) + сетка, лайки, теги. Без фреймворков. */
+const $ = (s) => document.querySelector(s);
+const feed = $("#feed"), grid = $("#grid"), chips = $("#chips");
+const state = { tag: "", q: "", sort: "new", page: 1, pages: 1, items: [], tagFor: null,
+  loading: false, current: null };
+
+const liked = new Set(JSON.parse(localStorage.getItem("vv_liked") || "[]"));
+const saveLiked = () => localStorage.setItem("vv_liked", JSON.stringify([...liked].slice(-500)));
+
+async function api(path, opts) {
+  const r = await fetch(path, opts);
+  if (!r.ok) throw new Error(await r.text());
+  return r.status === 204 ? null : r.json();
+}
+
+/* --- теги-чипсы --- */
+async function loadTags() {
+  const tags = await api("/api/tags").catch(() => []);
+  chips.innerHTML = "";
+  const all = document.createElement("button");
+  all.textContent = "Все";
+  all.className = state.tag ? "" : "on";
+  all.onclick = () => { state.tag = ""; state.page = 1; loadTags(); reload(); };
+  chips.append(all);
+  for (const t of tags.slice(0, 40)) {
+    const b = document.createElement("button");
+    b.textContent = `#${t.name} ${t.count}`;
+    b.className = state.tag === t.name ? "on" : "";
+    b.onclick = () => { state.tag = t.name; state.page = 1; loadTags(); reload(); };
+    chips.append(b);
+  }
+}
+
+/* --- загрузка списка --- */
+async function fetchVideos(append) {
+  const p = new URLSearchParams({
+    tag: state.tag, q: state.q, sort: state.sort,
+    page: state.page, per_page: 20,
+  });
+  const data = await api("/api/videos?" + p);
+  state.pages = data.pages;
+  state.items = append ? state.items.concat(data.items) : data.items;
+  return data.items;
+}
+
+function slideEl(v) {
+  const s = document.createElement("section");
+  s.className = "slide";
+  s.dataset.file = v.file;
+  const tags = v.tags.map((t) => `<span class="tag" data-tag="${t}">#${t}</span>`).join(" ");
+  s.innerHTML = `
+    <video src="${v.url}" loop muted playsinline preload="metadata"></video>
+    <div class="hint">❤️</div>
+    <div class="meta"><div class="fname">${escapeHtml(v.file)}</div><div>${tags}</div></div>
+    <div class="actions">
+      <button class="like ${liked.has(v.file) ? "liked" : ""}">❤️<small>${v.likes}</small></button>
+      <button class="tagbtn">🏷️</button>
+      <a href="${v.url}" download><button type="button">⬇️</button></a>
+    </div>`;
+  const video = s.querySelector("video");
+  s.querySelector(".like").onclick = () => likeVideo(v.file, s);
+  s.querySelector(".tagbtn").onclick = () => openTagForm(v.file);
+  s.querySelectorAll(".tag").forEach((el) => {
+    el.onclick = () => { state.tag = el.dataset.tag; state.page = 1; loadTags(); reload(); };
+  });
+  // тап по центру = play/pause, даблтап = лайк
+  let lastTap = 0;
+  video.onclick = () => {
+    const now = Date.now();
+    if (now - lastTap < 300) likeVideo(v.file, s);
+    else if (video.paused) video.play().catch(() => {});
+    else video.pause();
+    lastTap = now;
+  };
+  return s;
+}
+
+function escapeHtml(s) {
+  return s.replace(/[&<>"']/g, (c) => ({"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"}[c]));
+}
+
+async function reload() {
+  feed.innerHTML = ""; grid.innerHTML = "";
+  state.page = 1; state.current = null;
+  state.loading = true;
+  const items = await fetchVideos(false).catch(() => []);
+  state.loading = false;
+  if (!items.length) {
+    feed.innerHTML = `<div class="empty">Ничего не найдено 😢</div>`;
+    return;
+  }
+  renderFeed(items);
+  renderGrid(items);
+  observeSlides();
+}
+
+async function loadMore() {
+  if (state.loading || state.page >= state.pages) return;
+  state.loading = true;
+  state.page++;
+  const before = state.items.length;
+  const items = await fetchVideos(true).catch(() => []);
+  state.loading = false;
+  const fresh = state.items.slice(before);
+  if (!fresh.length) return;
+  // убрать старую кнопку "Ещё" перед дорисовкой
+  feed.querySelector(".more")?.remove();
+  renderFeed(fresh, true);
+  renderGrid(fresh, true);
+  observeSlides();
+  void items;
+}
+
+function renderFeed(items, append) {
+  if (!append) feed.innerHTML = "";
+  for (const v of items) feed.append(slideEl(v));
+  if (state.page < state.pages) {
+    const b = document.createElement("button");
+    b.className = "more"; b.textContent = "Ещё ⬇";
+    b.onclick = () => { b.remove(); loadMore(); };
+    feed.append(b);
+  }
+}
+
+function renderGrid(items, append) {
+  if (!append) grid.innerHTML = "";
+  for (const v of items) {
+    const c = document.createElement("div");
+    c.className = "card";
+    c.innerHTML = `
+      <video src="${v.url}#t=0.5" preload="metadata" muted playsinline></video>
+      <div class="row"><span>❤️ ${v.likes}</span><span>${escapeHtml(shortName(v.file))}</span></div>
+      <a class="open" href="#"></a>`;
+    c.querySelector(".open").onclick = (e) => {
+      e.preventDefault();
+      setMode("feed");
+      const el = feed.querySelector(`[data-file="${CSS.escape(v.file)}"]`);
+      if (el) el.scrollIntoView();
+    };
+    grid.append(c);
+  }
+}
+
+function shortName(f) {
+  return f.length > 18 ? f.slice(0, 17) + "…" : f;
+}
+
+/* автоплей видимого слайда */
+let observer;
+function observeSlides() {
+  observer && observer.disconnect();
+  observer = new IntersectionObserver((entries) => {
+    for (const e of entries) {
+      const video = e.target.querySelector("video");
+      if (!video) continue;
+      if (e.intersectionRatio > 0.6) {
+        state.current = e.target;
+        video.muted = false;
+        video.play().catch(() => { video.muted = true; video.play().catch(() => {}); });
+        // догружаем следующую страницу заранее
+        const slides = [...feed.querySelectorAll(".slide")];
+        if (slides.indexOf(e.target) > slides.length - 4) loadMore();
+      } else {
+        video.pause();
+        video.muted = true;
+      }
+    }
+  }, { root: feed, threshold: [0.6] });
+  feed.querySelectorAll(".slide").forEach((s) => observer.observe(s));
+}
+
+/* --- лайки --- */
+async function likeVideo(file, slide) {
+  const btn = slide.querySelector(".like");
+  const count = btn.querySelector("small");
+  const data = await api("/api/videos/" + encodeURIComponent(file) + "/like", { method: "POST" })
+    .catch(() => null);
+  if (!data) return;
+  count.textContent = data.likes;
+  liked.add(file); saveLiked();
+  btn.classList.add("liked");
+  if (!data.already) {
+    const hint = slide.querySelector(".hint");
+    hint.style.opacity = 1;
+    setTimeout(() => (hint.style.opacity = 0), 500);
+  }
+}
+
+/* --- теги --- */
+function openTagForm(file) {
+  state.tagFor = file;
+  $("#tagform").classList.add("show");
+  $("#taginput").value = "";
+  $("#taginput").focus();
+}
+$("#tagform").onsubmit = async (e) => {
+  e.preventDefault();
+  const tag = $("#taginput").value.trim();
+  if (!tag || !state.tagFor) return;
+  const data = await api("/api/videos/" + encodeURIComponent(state.tagFor) + "/tags", {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({ tag }),
+  }).catch((err) => { alert("Не вышло: " + err.message); return null; });
+  if (!data) return;
+  $("#tagform").classList.remove("show");
+  loadTags();
+  reload();
+};
+
+/* --- режимы, поиск, клавиатура --- */
+function setMode(m) {
+  document.body.classList.toggle("mode-grid", m === "grid");
+  $("#btn-feed").classList.toggle("on", m === "feed");
+  $("#btn-grid").classList.toggle("on", m === "grid");
+}
+$("#btn-feed").onclick = () => setMode("feed");
+$("#btn-grid").onclick = () => setMode("grid");
+
+let qTimer;
+$("#q").oninput = (e) => {
+  clearTimeout(qTimer);
+  qTimer = setTimeout(() => { state.q = e.target.value.trim(); reload(); }, 400);
+};
+$("#sort").onchange = (e) => { state.sort = e.target.value; reload(); };
+
+document.addEventListener("keydown", (e) => {
+  if (e.target.tagName === "INPUT" || e.target.tagName === "SELECT") return;
+  const cur = state.current && document.contains(state.current) ? state.current : $(".slide");
+  if (e.key === "ArrowDown" || e.key === "ArrowUp") {
+    e.preventDefault();
+    const slides = [...feed.querySelectorAll(".slide")];
+    const i = slides.indexOf(cur);
+    const next = slides[i + (e.key === "ArrowDown" ? 1 : -1)];
+    if (next) next.scrollIntoView({ behavior: "smooth" });
+  }
+  if ((e.key === "l" || e.key === "д" || e.key === "L") && cur) {
+    likeVideo(cur.dataset.file, cur);
+  }
+});
+
+loadTags();
+reload();
+

frontend/index.html

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+<!doctype html>
+<html lang="ru">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">
+<title>VV — вертикальные видео</title>
+<link rel="stylesheet" href="/style.css">
+</head>
+<body>
+<header class="topbar">
+  <div class="logo">VV<span>▶</span></div>
+  <input id="q" class="search" type="search" placeholder="Поиск…" autocomplete="off">
+  <div class="seg">
+    <button id="btn-feed" class="on">Лента</button>
+    <button id="btn-grid">Все</button>
+  </div>
+  <select id="sort" class="sort" title="Сортировка">
+    <option value="new">Новые</option>
+    <option value="likes">Топ</option>
+  </select>
+</header>
+<nav id="chips" class="chips"></nav>
+<main id="feed" class="feed"></main>
+<main id="grid" class="grid"></main>
+<form id="tagform" class="tagform">
+  <input id="taginput" placeholder="тег: jojo, ф1, мем…" maxlength="32" autocomplete="off">
+  <button type="submit">+</button>
+</form>
+<script src="/app.js"></script>
+</body>
+</html>

frontend/style.css

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+:root { color-scheme: dark; }
+* { box-sizing: border-box; }
+html, body { height: 100%; }
+body {
+  margin: 0; background: #000; color: #fff;
+  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
+  overflow: hidden;
+}
+.topbar {
+  position: fixed; inset: 0 0 auto 0; z-index: 20;
+  display: flex; gap: 8px; align-items: center; padding: 10px 12px;
+  background: linear-gradient(#000c, #0000);
+}
+.logo { font-weight: 800; font-size: 18px; letter-spacing: 1px; }
+.logo span { color: #fe2c55; }
+.search {
+  flex: 1; max-width: 320px; background: #ffffff22; border: 0; border-radius: 20px;
+  color: #fff; padding: 8px 14px; outline: none;
+}
+.seg { display: flex; background: #ffffff22; border-radius: 20px; overflow: hidden; }
+.seg button { border: 0; background: transparent; color: #fff; padding: 8px 14px; cursor: pointer; }
+.seg button.on { background: #fff; color: #000; font-weight: 700; }
+.sort { background: #ffffff22; color: #fff; border: 0; border-radius: 20px; padding: 8px; }
+.chips {
+  position: fixed; top: 52px; left: 0; right: 0; z-index: 20;
+  display: flex; gap: 6px; overflow-x: auto; padding: 6px 12px;
+}
+.chips:empty { display: none; }
+.chips button {
+  flex: none; border: 1px solid #ffffff44; background: #000a;
+  color: #fff; border-radius: 16px; padding: 5px 12px; cursor: pointer; font-size: 13px;
+}
+.chips button.on { background: #fe2c55; border-color: #fe2c55; }
+.feed {
+  height: 100dvh; overflow-y: scroll; scroll-snap-type: y mandatory;
+  scrollbar-width: none;
+}
+.feed::-webkit-scrollbar { display: none; }
+.slide {
+  position: relative; height: 100dvh; scroll-snap-align: start; scroll-snap-stop: always;
+  display: flex; align-items: center; justify-content: center; background: #111;
+}
+.slide video { height: 100%; max-width: 100%; object-fit: contain; background: #000; }
+.slide .meta {
+  position: absolute; left: 12px; right: 76px; bottom: 18px; z-index: 5;
+  font-size: 14px; text-shadow: 0 1px 6px #000;
+}
+.slide .meta .fname { font-weight: 600; margin-bottom: 6px; word-break: break-word; }
+.slide .meta .tag { color: #7dd3fc; margin-right: 8px; cursor: pointer; }
+.actions {
+  position: absolute; right: 8px; bottom: 90px; z-index: 5;
+  display: flex; flex-direction: column; gap: 14px; align-items: center;
+}
+.actions button {
+  width: 52px; height: 52px; border-radius: 50%; border: 0; cursor: pointer;
+  background: #ffffff22; color: #fff; font-size: 22px; backdrop-filter: blur(4px);
+  display: flex; align-items: center; justify-content: center; flex-direction: column;
+}
+.actions button small { font-size: 11px; }
+.actions button.liked { background: #fe2c55; }
+.hint {
+  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
+  font-size: 64px; opacity: 0; pointer-events: none;
+}
+.grid {
+  display: none; height: 100dvh; overflow-y: auto; padding: 100px 12px 20px;
+  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px;
+  align-content: start;
+}
+body.mode-grid { overflow: auto; }
+body.mode-grid .feed, body.mode-grid .chips { display: none; }
+body.mode-grid .grid { display: grid; }
+.card { position: relative; border-radius: 12px; overflow: hidden; background: #1a1a1a; }
+.card video { width: 100%; aspect-ratio: 9/16; object-fit: cover; display: block; }
+.card .row {
+  position: absolute; left: 0; right: 0; bottom: 0; padding: 6px 8px;
+  display: flex; justify-content: space-between; font-size: 12px;
+  background: linear-gradient(#0000, #000d);
+}
+.card .open { position: absolute; inset: 0; }
+.tagform {
+  position: fixed; z-index: 30; left: 50%; bottom: 24px; transform: translateX(-50%);
+  display: none; gap: 6px; background: #1c1c1c; padding: 10px; border-radius: 14px;
+  border: 1px solid #ffffff33; width: min(92vw, 380px);
+}
+.tagform.show { display: flex; }
+.tagform input {
+  flex: 1; background: #000; border: 1px solid #ffffff33; color: #fff;
+  border-radius: 10px; padding: 10px;
+}
+.tagform button { border-radius: 10px; border: 0; padding: 0 14px; cursor: pointer; }
+.empty { text-align: center; padding: 40dvh 20px 0; color: #aaa; }
+.more { display: block; margin: 12px auto; padding: 10px 26px; border-radius: 20px; border: 0; }