public/control.html

@@ -80,6 +80,11 @@
         Modal 100%
       </button>
     </li>
+    <li class="nav-item" role="presentation">
+      <button class="nav-link" id="admin-winners-tab" data-bs-toggle="tab" data-bs-target="#admin-winners" type="button" role="tab" aria-controls="admin-winners" aria-selected="false">
+        Gagnants
+      </button>
+    </li>
     <li class="nav-item" role="presentation">
       <button class="nav-link" id="admin-backup-tab" data-bs-toggle="tab" data-bs-target="#admin-backup" type="button" role="tab" aria-controls="admin-backup" aria-selected="false">
         Backup / Restore
@@ -387,6 +392,49 @@
         </div>
       </div>
     </div>
+
+    <div class="tab-pane fade" id="admin-winners" role="tabpanel" aria-labelledby="admin-winners-tab">
+      <div class="row g-3">
+        <div class="col-12 col-xxl-8">
+          <div class="card p-3">
+            <h4 class="mb-1">Définir le gagnant par année</h4>
+            <div class="text-muted mb-3">
+              Choisis une année, un utilisateur, et des points (optionnel). Laisse le champ points vide si tu ne veux pas l’afficher.
+            </div>
+
+            <div class="row g-3">
+              <div class="col-md-4">
+                <label for="winner_year" class="form-label">Année</label>
+                <select id="winner_year" class="form-select"></select>
+                <div class="form-text">Basé sur les années présentes dans les films.</div>
+              </div>
+              <div class="col-md-5">
+                <label for="winner_user" class="form-label">Utilisateur</label>
+                <select id="winner_user" class="form-select">
+                  <option value="">—</option>
+                </select>
+                <div class="form-text">Si tu choisis “—”, le gagnant est supprimé pour l’année.</div>
+              </div>
+              <div class="col-md-3">
+                <label for="winner_points" class="form-label">Points (optionnel)</label>
+                <input id="winner_points" type="number" class="form-control" placeholder="ex: 42" min="0" step="1">
+              </div>
+            </div>
+
+            <div class="d-flex flex-wrap justify-content-end gap-2 mt-3">
+              <button type="button" id="winner_reload" class="btn btn-outline-primary">Recharger</button>
+              <button type="button" id="winner_clear" class="btn btn-outline-danger">Supprimer</button>
+              <button type="button" id="winner_save" class="btn btn-warning">Enregistrer</button>
+            </div>
+
+            <div class="mt-3">
+              <div class="text-muted small mb-1">Gagnant actuel</div>
+              <div id="winner_current" class="border rounded p-2 bg-light">—</div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
   </div>
 </div>
 

public/js/app_control.js

@@ -62,6 +62,16 @@ window.onload = async function () {
   const selectAllBox = document.getElementById('select-all-movies');
   const selectedCountEl = document.getElementById('selected-count');
 
+  // Winners tab elements
+  const adminWinnersTabBtn = document.getElementById('admin-winners-tab');
+  const winnerYearSelect = document.getElementById('winner_year');
+  const winnerUserSelect = document.getElementById('winner_user');
+  const winnerPointsEl = document.getElementById('winner_points');
+  const winnerReloadBtn = document.getElementById('winner_reload');
+  const winnerClearBtn = document.getElementById('winner_clear');
+  const winnerSaveBtn = document.getElementById('winner_save');
+  const winnerCurrentEl = document.getElementById('winner_current');
+
   const editMovieModalEl = document.getElementById('editMovieModal');
   const editMovieModal = editMovieModalEl ? new bootstrap.Modal(editMovieModalEl) : null;
   const editMovieModalTitleEl = document.getElementById('editMovieModalTitle');
@@ -83,6 +93,10 @@ window.onload = async function () {
 
   let moviesById = new Map();
   let activeYear = null;
+  let winnersLoadedOnce = false;
+  let winnerUsersLoadedOnce = false;
+  let winnersByYear = new Map(); // year -> { year, userId, name, points }
+  let winnerUsers = []; // admin list: {id, name, email, ...}
 
   const DEFAULT_COMPLETION_MODAL = Object.freeze({
     title: 'Félicitations! very nice 🎉🎉🎉',
@@ -460,6 +474,168 @@ window.onload = async function () {
     return n;
   }
 
+  async function fetchWinners() {
+    const res = await fetch('/api/settings/winners', { method: 'GET' });
+    const data = await res.json().catch(() => ({}));
+    if (!res.ok) {
+      const msg = data.message || data.error || `Erreur (${res.status})`;
+      throw new Error(msg);
+    }
+    return Array.isArray(data?.winners) ? data.winners : [];
+  }
+
+  async function saveWinner(year, userId, points) {
+    const res = await fetch(`/api/settings/winners/${encodeURIComponent(String(year))}`, {
+      method: 'PUT',
+      headers: {
+        'Content-Type': 'application/json',
+        'Authorization': `Bearer ${token}`,
+      },
+      body: JSON.stringify({
+        userId: userId ? String(userId) : '',
+        points: points === undefined ? null : points,
+      }),
+    });
+    const data = await res.json().catch(() => ({}));
+    if (!res.ok) {
+      const msg = data.message || data.error || `Erreur (${res.status})`;
+      throw new Error(msg);
+    }
+    return data;
+  }
+
+  function buildWinnerUsersOptions(users) {
+    if (!winnerUserSelect) return;
+    const list = Array.isArray(users) ? users : [];
+    const previous = String(winnerUserSelect.value || '');
+    winnerUserSelect.innerHTML = '';
+
+    const emptyOpt = document.createElement('option');
+    emptyOpt.value = '';
+    emptyOpt.textContent = '—';
+    winnerUserSelect.appendChild(emptyOpt);
+
+    list.forEach((u) => {
+      const opt = document.createElement('option');
+      opt.value = String(u?.id || '');
+      const label = u?.name ? u.name : u?.email ? u.email : '(sans nom)';
+      opt.textContent = label;
+      winnerUserSelect.appendChild(opt);
+    });
+
+    const stillExists = list.map((u) => String(u?.id || '')).includes(previous);
+    winnerUserSelect.value = stillExists ? previous : '';
+  }
+
+  function setWinnerYearOptions(cleanedYears) {
+    if (!winnerYearSelect) return;
+    const years = Array.isArray(cleanedYears) ? cleanedYears : [];
+    const previous = String(winnerYearSelect.value || '');
+    winnerYearSelect.innerHTML = '';
+
+    if (!years.length) {
+      const opt = document.createElement('option');
+      opt.value = '';
+      opt.textContent = 'Aucune année (ajoute un film)';
+      opt.disabled = true;
+      opt.selected = true;
+      winnerYearSelect.appendChild(opt);
+      winnerYearSelect.disabled = true;
+      if (winnerSaveBtn) winnerSaveBtn.disabled = true;
+      if (winnerClearBtn) winnerClearBtn.disabled = true;
+      return;
+    }
+
+    years.forEach((y) => {
+      const opt = document.createElement('option');
+      opt.value = String(y);
+      opt.textContent = String(y);
+      winnerYearSelect.appendChild(opt);
+    });
+
+    winnerYearSelect.disabled = false;
+    if (winnerSaveBtn) winnerSaveBtn.disabled = false;
+    if (winnerClearBtn) winnerClearBtn.disabled = false;
+
+    const stillExists = years.map(String).includes(previous);
+    const desired = stillExists
+      ? previous
+      : (activeYear && years.map(String).includes(String(activeYear)))
+        ? String(activeYear)
+        : String(years[0]);
+    winnerYearSelect.value = desired;
+  }
+
+  function getWinnerForYear(year) {
+    const y = parseYear(year);
+    if (!y) return null;
+    return winnersByYear.get(String(y)) || null;
+  }
+
+  function renderWinnerCurrent() {
+    if (!winnerCurrentEl || !winnerYearSelect) return;
+    const y = parseYear(winnerYearSelect.value);
+    if (!y) {
+      winnerCurrentEl.textContent = '—';
+      return;
+    }
+    const w = getWinnerForYear(y);
+    if (!w) {
+      winnerCurrentEl.textContent = `${y}: (aucun gagnant)`;
+      return;
+    }
+    const points = w.points === null || w.points === undefined ? null : Number(w.points);
+    const pointsLabel = points === null || Number.isNaN(points) ? '' : ` — ${points} pts`;
+    winnerCurrentEl.textContent = `${y}: ${w.name || '(utilisateur supprimé)'}${pointsLabel}`;
+  }
+
+  function applyWinnerFormFromCache() {
+    if (!winnerYearSelect) return;
+    const y = parseYear(winnerYearSelect.value);
+    if (!y) return;
+    const w = getWinnerForYear(y);
+    if (winnerUserSelect) {
+      winnerUserSelect.value = w?.userId ? String(w.userId) : '';
+    }
+    if (winnerPointsEl) {
+      const pts = w?.points;
+      winnerPointsEl.value = pts === null || pts === undefined ? '' : String(pts);
+    }
+    renderWinnerCurrent();
+  }
+
+  async function loadWinners(options = {}) {
+    const force = !!options.force;
+    if (winnersLoadedOnce && !force) return;
+    const list = await fetchWinners();
+    winnersLoadedOnce = true;
+    winnersByYear = new Map(
+      list
+        .filter((w) => parseYear(w?.year))
+        .map((w) => [
+          String(w.year),
+          {
+            year: Number(w.year),
+            userId: String(w.userId || ''),
+            name: w.name || null,
+            points: w.points ?? null,
+          }
+        ])
+    );
+    applyWinnerFormFromCache();
+  }
+
+  async function loadWinnerUsers(options = {}) {
+    const force = !!options.force;
+    if (winnerUsersLoadedOnce && !force) return;
+    const users = await fetchAdminUsers();
+    winnerUsersLoadedOnce = true;
+    winnerUsers = Array.isArray(users) ? users : [];
+    winnerUsers.sort((a, b) => (a?.name || '').localeCompare((b?.name || ''), 'fr', { sensitivity: 'base' }));
+    buildWinnerUsersOptions(winnerUsers);
+    applyWinnerFormFromCache();
+  }
+
   async function fetchActiveYear() {
     try {
       const res = await fetch('/api/settings/year', { method: 'GET' });
@@ -1001,6 +1177,91 @@ window.onload = async function () {
     dbRestoreRunBtn.addEventListener('click', runRestore);
   }
 
+  // Winners tab wiring
+  async function initWinnersTab(options = {}) {
+    const force = !!options.force;
+    try {
+      await Promise.all([
+        loadWinners({ force }),
+        loadWinnerUsers({ force }),
+      ]);
+      renderWinnerCurrent();
+    } catch (err) {
+      showResponse('danger', err.message || 'Erreur réseau');
+    }
+  }
+
+  if (adminWinnersTabBtn) {
+    adminWinnersTabBtn.addEventListener('shown.bs.tab', () => initWinnersTab({ force: false }));
+  }
+
+  if (winnerYearSelect) {
+    winnerYearSelect.addEventListener('change', () => applyWinnerFormFromCache());
+  }
+
+  if (winnerReloadBtn) {
+    winnerReloadBtn.addEventListener('click', async () => {
+      winnerReloadBtn.disabled = true;
+      const old = winnerReloadBtn.textContent;
+      winnerReloadBtn.textContent = 'Chargement...';
+      try {
+        await initWinnersTab({ force: true });
+        showResponse('success', 'Gagnants rechargés.');
+      } finally {
+        winnerReloadBtn.disabled = false;
+        winnerReloadBtn.textContent = old;
+      }
+    });
+  }
+
+  if (winnerClearBtn) {
+    winnerClearBtn.addEventListener('click', async () => {
+      if (!winnerYearSelect) return;
+      const y = parseYear(winnerYearSelect.value);
+      if (!y) return;
+      const ok = window.confirm(`Supprimer le gagnant pour ${y} ?`);
+      if (!ok) return;
+      try {
+        if (winnerUserSelect) winnerUserSelect.value = '';
+        if (winnerPointsEl) winnerPointsEl.value = '';
+        await saveWinner(y, '', null);
+        await loadWinners({ force: true });
+        showResponse('success', `Gagnant supprimé pour ${y}.`);
+      } catch (err) {
+        showResponse('danger', err.message || 'Erreur réseau');
+      }
+    });
+  }
+
+  if (winnerSaveBtn) {
+    winnerSaveBtn.addEventListener('click', async () => {
+      if (!winnerYearSelect) return;
+      const y = parseYear(winnerYearSelect.value);
+      if (!y) {
+        showResponse('warning', 'Année invalide.');
+        return;
+      }
+      const userId = String(winnerUserSelect?.value || '').trim();
+      const pointsRaw = String(winnerPointsEl?.value || '').trim();
+      const points = pointsRaw === '' ? null : Number(pointsRaw);
+      const pointsToSend = pointsRaw === '' || Number.isNaN(points) ? null : Math.round(points);
+
+      winnerSaveBtn.disabled = true;
+      const old = winnerSaveBtn.textContent;
+      winnerSaveBtn.textContent = 'Enregistrement...';
+      try {
+        await saveWinner(y, userId, pointsToSend);
+        await loadWinners({ force: true });
+        showResponse('success', `Gagnant enregistré pour ${y}.`);
+      } catch (err) {
+        showResponse('danger', err.message || 'Erreur réseau');
+      } finally {
+        winnerSaveBtn.disabled = false;
+        winnerSaveBtn.textContent = old;
+      }
+    });
+  }
+
   form.addEventListener('submit', async function (e) {
     e.preventDefault();
 
@@ -1135,6 +1396,10 @@ window.onload = async function () {
           activeYearInput.value = desired;
         }
       }
+
+      // Winners year dropdown (optional tab)
+      setWinnerYearOptions(cleanedYears);
+      applyWinnerFormFromCache();
     } catch (_) {
       // ignore
     }

public/js/app_user-stat.js

@@ -13,6 +13,117 @@ window.onload = async function () {
       }
     }
 
+    async function fetchWinners() {
+      try {
+        const res = await fetch('/api/settings/winners', { method: 'GET' });
+        if (!res.ok) throw new Error('Failed to fetch winners');
+        const data = await res.json().catch(() => ({}));
+        return Array.isArray(data?.winners) ? data.winners : [];
+      } catch (_) {
+        return [];
+      }
+    }
+
+    async function fetchCompletions() {
+      try {
+        const res = await fetch('/api/users/completions', {
+          method: 'GET',
+          headers: { 'Authorization': `Bearer ${token}` }
+        });
+        if (!res.ok) throw new Error('Failed to fetch completions');
+        const data = await res.json().catch(() => ({}));
+        return data && typeof data === 'object' ? data : null;
+      } catch (_) {
+        return null;
+      }
+    }
+
+    function renderWinners(winners) {
+      const winnersList = document.getElementById('winners-list');
+      if (!winnersList) return;
+      const list = Array.isArray(winners) ? winners : [];
+      if (!list.length) {
+        winnersList.innerHTML = '<div class="list-group-item text-muted">Aucun gagnant défini.</div>';
+        return;
+      }
+
+      // Ensure sorted by year desc
+      list.sort((a, b) => Number(b?.year || 0) - Number(a?.year || 0));
+      winnersList.innerHTML = '';
+
+      list.forEach((w) => {
+        const year = Number(w?.year);
+        const name = w?.name || '(utilisateur supprimé)';
+        const points = w?.points === null || w?.points === undefined || w?.points === '' ? null : Number(w.points);
+        const pointsLabel = points === null || Number.isNaN(points) ? '' : ` — ${points} pts`;
+        const item = document.createElement('div');
+        item.className = 'list-group-item d-flex justify-content-between align-items-center';
+        item.innerHTML = `
+          <div><strong>${year || '—'}</strong> : ${name}${pointsLabel}</div>
+        `;
+        winnersList.appendChild(item);
+      });
+    }
+
+    function renderCompletions(completions) {
+      const root = document.getElementById('completers-by-year');
+      if (!root) return;
+
+      if (!completions || typeof completions !== 'object') {
+        root.innerHTML = '<div class="text-muted">Impossible de charger les finisseurs 100%.</div>';
+        return;
+      }
+
+      const years = Array.isArray(completions?.years) ? completions.years : [];
+      const totals = completions?.totals && typeof completions.totals === 'object' ? completions.totals : {};
+      const byYear = completions?.completersByYear && typeof completions.completersByYear === 'object' ? completions.completersByYear : {};
+
+      if (!years.length) {
+        root.innerHTML = '<div class="text-muted">Aucune année trouvée.</div>';
+        return;
+      }
+
+      // Build a simple accordion
+      const accordionId = 'completersAccordion';
+      root.innerHTML = `<div class="accordion" id="${accordionId}"></div>`;
+      const acc = root.querySelector('.accordion');
+
+      years.forEach((y, idx) => {
+        const yearStr = String(y);
+        const total = Number(totals?.[yearStr] ?? 0);
+        const completers = Array.isArray(byYear?.[yearStr]) ? byYear[yearStr] : [];
+        const count = completers.length;
+
+        const collapseId = `completers-${yearStr}`;
+        const headingId = `heading-${yearStr}`;
+        const show = idx === 0 ? 'show' : '';
+        const collapsed = idx === 0 ? '' : 'collapsed';
+        const expanded = idx === 0 ? 'true' : 'false';
+
+        const bodyHtml = count
+          ? `<ul class="list-group list-group-flush">
+               ${completers.map((u) => `<li class="list-group-item">${u?.name || '(sans nom)'}</li>`).join('')}
+             </ul>`
+          : `<div class="text-muted">Aucun utilisateur à 100%.</div>`;
+
+        const item = document.createElement('div');
+        item.className = 'accordion-item';
+        item.innerHTML = `
+          <h2 class="accordion-header" id="${headingId}">
+            <button class="accordion-button ${collapsed}" type="button" data-bs-toggle="collapse" data-bs-target="#${collapseId}" aria-expanded="${expanded}" aria-controls="${collapseId}">
+              ${yearStr} — ${count} finisseur(s) (total films: ${total})
+            </button>
+          </h2>
+          <div id="${collapseId}" class="accordion-collapse collapse ${show}" aria-labelledby="${headingId}" data-bs-parent="#${accordionId}">
+            <div class="accordion-body">
+              ${bodyHtml}
+            </div>
+          </div>
+        `;
+        acc.appendChild(item);
+      });
+    }
+
     if (token) {
       try {
         const decoded = JSON.parse(atob(token.split('.')[1])); // Manually decoding JWT
@@ -52,12 +163,14 @@ window.onload = async function () {
       }
 
       const statsUrl = activeYear ? `/api/users/stats?year=${encodeURIComponent(String(activeYear))}` : '/api/users/stats';
-      const statsRes = await fetch(statsUrl, {
+      const [statsRes, winners, completions] = await Promise.all([
-        method: 'GET',
+        fetch(statsUrl, {
-        headers: {
+          method: 'GET',
-          'Authorization': `Bearer ${token}`
+          headers: { 'Authorization': `Bearer ${token}` }
-        }
+        }),
-      });
+        fetchWinners(),
+        fetchCompletions(),
+      ]);
 
       if (!statsRes.ok) {
         throw new Error('Failed to fetch user stats');
@@ -68,6 +181,9 @@ window.onload = async function () {
       const table = document.querySelector('.user-table');
       const spinner = document.getElementById('loading-spinner');
 
+      renderWinners(winners);
+      renderCompletions(completions);
+
       // Ensure watchedRatio is treated as a number and sort in descending order
       stats.sort((a, b) => parseFloat(b.watchedRatio) - parseFloat(a.watchedRatio));
 
@@ -117,6 +233,9 @@ window.onload = async function () {
       });
     } catch (error) {
       console.error('Error loading user statistics:', error);
+      // Still attempt to render these sections even if stats fail (best effort)
+      try { renderWinners(await fetchWinners()); } catch (_) {}
+      try { renderCompletions(await fetchCompletions()); } catch (_) {}
     }
 
     // Log-off functionality

public/user-stat.html

@@ -62,6 +62,24 @@
 <div class="container mt-5">
   <h2>Statistiques des utilisateurs</h2>
   
+  <!-- Winners section -->
+  <div class="mt-4">
+    <h4 class="mb-2">Gagnants</h4>
+    <div class="text-muted mb-2">Définis dans l’admin (optionnel).</div>
+    <div id="winners-list" class="list-group mb-4">
+      <div class="list-group-item text-muted">Chargement…</div>
+    </div>
+  </div>
+
+  <!-- 100% completers section -->
+  <div class="mt-4">
+    <h4 class="mb-2">Utilisateurs ayant terminé 100% (par année)</h4>
+    <div class="text-muted mb-2">Completion = 100% pour l’année (tous les films de l’année vus).</div>
+    <div id="completers-by-year" class="mb-4">
+      <div class="text-muted">Chargement…</div>
+    </div>
+  </div>
+
   <!-- Spinner shown while loading -->
   <div id="loading-spinner" class="spinner-border text-primary" role="status">
     <span class="visually-hidden">Loading...</span>

routes/settings.js

@@ -1,13 +1,16 @@
 const express = require("express");
 const jwt = require("jsonwebtoken");
+const mongoose = require("mongoose");
 
 const Setting = require("../models/Setting");
 const Movie = require("../models/Movie");
+const User = require("../models/User");
 
 const router = express.Router();
 
 const ACTIVE_YEAR_KEY = "active_oscar_year";
 const COMPLETION_MODAL_KEY = "completion_modal_content";
+const WINNERS_BY_YEAR_KEY = "winners_by_year";
 
 const DEFAULT_COMPLETION_MODAL = Object.freeze({
   title: "Félicitations! very nice 🎉🎉🎉",
@@ -24,6 +27,31 @@ function parseOscarYear(raw) {
   return n;
 }
 
+function parseOptionalPoints(raw) {
+  if (raw === undefined) return null;
+  if (raw === null) return null;
+  if (raw === "") return null;
+  const n = Number(raw);
+  if (!Number.isFinite(n)) return null;
+  // Points can be any finite number, but we store a rounded int for consistency.
+  return Math.round(n);
+}
+
+function normalizeWinnersByYear(rawValue) {
+  const value = rawValue && typeof rawValue === "object" && !Array.isArray(rawValue) ? rawValue : {};
+  const out = {};
+  for (const [k, v] of Object.entries(value)) {
+    const year = parseOscarYear(k);
+    if (!year) continue;
+    const entry = v && typeof v === "object" && !Array.isArray(v) ? v : {};
+    const userId = typeof entry.userId === "string" ? entry.userId.trim() : "";
+    if (!userId || !mongoose.Types.ObjectId.isValid(userId)) continue;
+    const points = parseOptionalPoints(entry.points);
+    out[String(year)] = { userId, points };
+  }
+  return out;
+}
+
 function sanitizeHtml(raw) {
   // Basic, defensive sanitization (admin-controlled input, rendered for all users).
   // We remove script tags and inline event handlers. This is not a complete HTML sanitizer.
@@ -153,5 +181,108 @@ router.put("/completion-modal", async (req, res) => {
   }
 });
 
+// Public: get winners by year (optionally with points)
+router.get("/winners", async (req, res) => {
+  try {
+    const existing = await Setting.findOne({ key: WINNERS_BY_YEAR_KEY }).select("value");
+    const normalized = normalizeWinnersByYear(existing?.value);
+
+    const entries = Object.entries(normalized)
+      .map(([yearStr, v]) => ({
+        year: Number(yearStr),
+        userId: v.userId,
+        points: v.points ?? null,
+      }))
+      .filter((e) => parseOscarYear(e.year))
+      .sort((a, b) => b.year - a.year);
+
+    const userIds = entries.map((e) => e.userId).filter(Boolean);
+    const users = userIds.length
+      ? await User.find({ _id: { $in: userIds } }).select("name").lean()
+      : [];
+    const nameById = new Map(users.map((u) => [String(u._id), u.name]));
+
+    return res.status(200).json({
+      winners: entries.map((e) => ({
+        year: e.year,
+        userId: e.userId,
+        name: nameById.get(String(e.userId)) || null,
+        points: e.points ?? null,
+      })),
+    });
+  } catch (err) {
+    return res.status(500).json({ error: err.message });
+  }
+});
+
+// Admin-only: set/clear winner for a given year. Points optional.
+// Body: { userId: "<mongoId>" | "" | null, points?: number|null }
+router.put("/winners/:year", async (req, res) => {
+  const token = req.headers.authorization?.split(" ")[1];
+  if (!token) return res.status(401).json({ message: "Authentication token is required" });
+
+  try {
+    const decoded = jwt.verify(token, process.env.JWT_SECRET);
+    if (!decoded.admin) {
+      return res.status(403).json({ message: "You do not have admin privileges" });
+    }
+
+    const year = parseOscarYear(req.params?.year);
+    if (!year) {
+      return res.status(400).json({ message: "Année invalide (ex: 2026)" });
+    }
+
+    const rawUserId = req.body?.userId;
+    const userId = typeof rawUserId === "string" ? rawUserId.trim() : rawUserId === null ? "" : "";
+    const points = parseOptionalPoints(req.body?.points);
+
+    const existing = await Setting.findOne({ key: WINNERS_BY_YEAR_KEY }).select("value");
+    const winners = normalizeWinnersByYear(existing?.value);
+
+    // Clear winner for year
+    if (!userId) {
+      delete winners[String(year)];
+      await Setting.findOneAndUpdate(
+        { key: WINNERS_BY_YEAR_KEY },
+        { $set: { value: winners } },
+        { upsert: true, new: true }
+      );
+      return res.status(200).json({ year, winner: null });
+    }
+
+    if (!mongoose.Types.ObjectId.isValid(userId)) {
+      return res.status(400).json({ message: "userId invalide" });
+    }
+
+    const winnerUser = await User.findById(userId).select("name").lean();
+    if (!winnerUser) {
+      return res.status(404).json({ message: "User not found" });
+    }
+
+    winners[String(year)] = { userId: String(userId), points };
+
+    await Setting.findOneAndUpdate(
+      { key: WINNERS_BY_YEAR_KEY },
+      { $set: { value: winners } },
+      { upsert: true, new: true }
+    );
+
+    return res.status(200).json({
+      year,
+      winner: {
+        year,
+        userId: String(userId),
+        name: winnerUser.name || null,
+        points: points ?? null,
+      },
+    });
+  } catch (err) {
+    if (err instanceof jwt.JsonWebTokenError) {
+      return res.status(401).json({ message: "Invalid or expired token" });
+    }
+    return res.status(500).json({ error: err.message });
+  }
+});
+
 module.exports = router;
 

routes/users.js

@@ -167,6 +167,85 @@ router.get("/stats", verifyToken, async (req, res) => {
   }
 });
 
+// Get users who have 100% completion per year (across all years in DB)
+// Returns: { years: number[], totals: { [year]: number }, completersByYear: { [year]: {name, watchedCount, totalMoviesCount}[] } }
+router.get("/completions", verifyToken, async (req, res) => {
+  try {
+    const yearsRaw = await Movie.distinct("year");
+    const years = (Array.isArray(yearsRaw) ? yearsRaw : [])
+      .map((y) => Number(y))
+      .filter((y) => parseOscarYear(y))
+      .sort((a, b) => b - a);
+
+    if (years.length === 0) {
+      return res.status(200).json({ years: [], totals: {}, completersByYear: {} });
+    }
+
+    // Fetch imdb_id + year for all movies that have a valid year
+    const movies = await Movie.find({ year: { $in: years } }).select("imdb_id year").lean();
+
+    const imdbIdsByYear = new Map();
+    const totals = {};
+
+    movies.forEach((m) => {
+      const year = Number(m?.year);
+      if (!parseOscarYear(year)) return;
+      const imdb = typeof m?.imdb_id === "string" ? m.imdb_id : "";
+      if (!imdb) return;
+      if (!imdbIdsByYear.has(year)) imdbIdsByYear.set(year, new Set());
+      imdbIdsByYear.get(year).add(imdb);
+    });
+
+    for (const y of years) {
+      const set = imdbIdsByYear.get(y);
+      totals[String(y)] = set ? set.size : 0;
+    }
+
+    const users = await User.find().select("name watchedMovies.imdb_id").lean();
+
+    const completersByYear = {};
+    for (const y of years) {
+      const total = totals[String(y)] || 0;
+      if (total <= 0) {
+        completersByYear[String(y)] = [];
+        continue;
+      }
+      const yearSet = imdbIdsByYear.get(y) || new Set();
+
+      const completers = [];
+      users.forEach((u) => {
+        const watched = Array.isArray(u?.watchedMovies) ? u.watchedMovies : [];
+        const watchedSet = new Set(
+          watched
+            .map((wm) => (typeof wm?.imdb_id === "string" ? wm.imdb_id : ""))
+            .filter(Boolean)
+        );
+
+        let count = 0;
+        for (const imdb of watchedSet) {
+          if (yearSet.has(imdb)) count += 1;
+        }
+
+        if (count === total) {
+          completers.push({
+            name: u?.name || "(sans nom)",
+            watchedCount: count,
+            totalMoviesCount: total,
+          });
+        }
+      });
+
+      completers.sort((a, b) => String(a.name).localeCompare(String(b.name), "fr", { sensitivity: "base" }));
+      completersByYear[String(y)] = completers;
+    }
+
+    return res.status(200).json({ years, totals, completersByYear });
+  } catch (err) {
+    console.error("Erreur dans l'extraction des completers:", err);
+    return res.status(500).json({ error: "Internal server error" });
+  }
+});
+
 // Register User
 router.post("/register", async (req, res) => {
   const { name, email, password, verifoof } = req.body;