release(v1.8.2): media progress tracking + watched badges; PWA scaffolding; mobile switcher (closes #37)

public/js/filePreview.js

@@ -1,7 +1,7 @@
 // filePreview.js
 import { escapeHTML, showToast } from './domUtils.js?v={{APP_QVER}}';
-import { fileData } from './fileListView.js?v={{APP_QVER}}';
 import { t } from './i18n.js?v={{APP_QVER}}';
+import { fileData, setFileProgressBadge, setFileWatchedBadge } from './fileListView.js?v={{APP_QVER}}';
 
 // Build a preview URL that always goes through the API layer (respects ACLs/UPLOAD_DIR)
 export function buildPreviewUrl(folder, name) {
@@ -9,12 +9,11 @@ export function buildPreviewUrl(folder, name) {
   return `/api/file/download.php?folder=${encodeURIComponent(f)}&file=${encodeURIComponent(name)}&inline=1&t=${Date.now()}`;
 }
 
+/* -------------------------------- Share modal (existing) -------------------------------- */
 export function openShareModal(file, folder) {
-  // Remove any existing modal
   const existing = document.getElementById("shareModal");
   if (existing) existing.remove();
 
-  // Build the modal
   const modal = document.createElement("div");
   modal.id = "shareModal";
   modal.classList.add("modal");
@@ -51,18 +50,9 @@ export function openShareModal(file, folder) {
         </div>
 
         <p style="margin-top:15px;">${t("password_optional")}</p>
-        <input
-          type="text"
-          id="sharePassword"
-          placeholder="${t("password_optional")}"
-          style="width:100%;padding:5px;"
-        />
+        <input type="text" id="sharePassword" placeholder="${t("password_optional")}" style="width:100%;padding:5px;"/>
 
-        <button
-          id="generateShareLinkBtn"
-          class="btn btn-primary"
-          style="margin-top:15px;"
-        >
+        <button id="generateShareLinkBtn" class="btn btn-primary" style="margin-top:15px;">
           ${t("generate_share_link")}
         </button>
 
@@ -79,392 +69,524 @@ export function openShareModal(file, folder) {
   document.body.appendChild(modal);
   modal.style.display = "block";
 
-  // Close handler
-  document.getElementById("closeShareModal")
-    .addEventListener("click", () => modal.remove());
+  document.getElementById("closeShareModal").addEventListener("click", () => modal.remove());
+  document.getElementById("shareExpiration").addEventListener("change", e => {
+    const container = document.getElementById("customExpirationContainer");
+    container.style.display = e.target.value === "custom" ? "block" : "none";
+  });
 
-  // Show/hide custom-duration inputs
-  document.getElementById("shareExpiration")
-    .addEventListener("change", e => {
-      const container = document.getElementById("customExpirationContainer");
-      container.style.display = e.target.value === "custom" ? "block" : "none";
-    });
+  document.getElementById("generateShareLinkBtn").addEventListener("click", () => {
+    const sel = document.getElementById("shareExpiration");
+    let value, unit;
 
-  // Generate share link
-  document.getElementById("generateShareLinkBtn")
-    .addEventListener("click", () => {
-      const sel = document.getElementById("shareExpiration");
-      let value, unit;
-
-      if (sel.value === "custom") {
-        value = parseInt(document.getElementById("customExpirationValue").value, 10);
-        unit = document.getElementById("customExpirationUnit").value;
-      } else {
-        value = parseInt(sel.value, 10);
-        unit = "minutes";
-      }
-
-      const password = document.getElementById("sharePassword").value;
-
-      fetch("/api/file/createShareLink.php", {
-        method: "POST",
-        credentials: "include",
-        headers: {
-          "Content-Type": "application/json",
-          "X-CSRF-Token": window.csrfToken
-        },
-        body: JSON.stringify({
-          folder,
-          file: file.name,
-          expirationValue: value,
-          expirationUnit: unit,
-          password
-        })
-      })
-        .then(res => res.json())
-        .then(data => {
-          if (data.token) {
-            const url = `${window.location.origin}/api/file/share.php?token=${encodeURIComponent(data.token)}`;
-            document.getElementById("shareLinkInput").value = url;
-            document.getElementById("shareLinkDisplay").style.display = "block";
-          } else {
-            showToast(t("error_generating_share") + ": " + (data.error || "Unknown"));
-          }
-        })
-        .catch(err => {
-          console.error(err);
-          showToast(t("error_generating_share"));
-        });
-    });
-
-  // Copy to clipboard
-  document.getElementById("copyShareLinkBtn")
-    .addEventListener("click", () => {
-      const input = document.getElementById("shareLinkInput");
-      input.select();
-      document.execCommand("copy");
-      showToast(t("link_copied"));
-    });
-}
-
-export function previewFile(fileUrl, fileName) {
-  let modal = document.getElementById("filePreviewModal");
-  if (!modal) {
-    modal = document.createElement("div");
-    modal.id = "filePreviewModal";
-    Object.assign(modal.style, {
-      position: "fixed",
-      top: "0",
-      left: "0",
-      width: "100vw",
-      height: "100vh",
-      backgroundColor: "rgba(0,0,0,0.7)",
-      display: "flex",
-      justifyContent: "center",
-      alignItems: "center",
-      zIndex: "1000"
-    });
-    modal.innerHTML = `
-      <div class="modal-content image-preview-modal-content" style="position: relative; max-width: 90vw; max-height: 90vh;">
-        <span id="closeFileModal" class="close-image-modal" style="position: absolute; top: 10px; right: 10px; font-size: 24px; cursor: pointer;">&times;</span>
-        <h4 class="image-modal-header"></h4>
-        <div class="file-preview-container" style="position: relative; text-align: center;"></div>
-      </div>`;
-    document.body.appendChild(modal);
-
-    function closeModal() {
-      const mediaElements = modal.querySelectorAll("video, audio");
-      mediaElements.forEach(media => {
-        media.pause();
-        if (media.tagName.toLowerCase() !== 'video') {
-          try { media.currentTime = 0; } catch (e) { }
-        }
-      });
-      modal.remove();
+    if (sel.value === "custom") {
+      value = parseInt(document.getElementById("customExpirationValue").value, 10);
+      unit = document.getElementById("customExpirationUnit").value;
+    } else {
+      value = parseInt(sel.value, 10);
+      unit = "minutes";
     }
 
-    document.getElementById("closeFileModal").addEventListener("click", closeModal);
-    modal.addEventListener("click", function (e) {
-      if (e.target === modal) {
-        closeModal();
-      }
-    });
-  }
-  modal.querySelector("h4").textContent = fileName;
-  const container = modal.querySelector(".file-preview-container");
-  container.innerHTML = "";
+    const password = document.getElementById("sharePassword").value;
 
-  const extension = fileName.split('.').pop().toLowerCase();
-  const isImage = /\.(jpg|jpeg|png|gif|bmp|webp|svg|ico)$/i.test(fileName);
+    fetch("/api/file/createShareLink.php", {
+      method: "POST",
+      credentials: "include",
+      headers: { "Content-Type": "application/json", "X-CSRF-Token": window.csrfToken },
+      body: JSON.stringify({ folder, file: file.name, expirationValue: value, expirationUnit: unit, password })
+    })
+      .then(res => res.json())
+      .then(data => {
+        if (data.token) {
+          const url = `${window.location.origin}/api/file/share.php?token=${encodeURIComponent(data.token)}`;
+          document.getElementById("shareLinkInput").value = url;
+          document.getElementById("shareLinkDisplay").style.display = "block";
+        } else {
+          showToast(t("error_generating_share") + ": " + (data.error || "Unknown"));
+        }
+      })
+      .catch(err => {
+        console.error(err);
+        showToast(t("error_generating_share"));
+      });
+  });
+
+  document.getElementById("copyShareLinkBtn").addEventListener("click", () => {
+    const input = document.getElementById("shareLinkInput");
+    input.select();
+    document.execCommand("copy");
+    showToast(t("link_copied"));
+  });
+}
+
+/* -------------------------------- Media modal viewer -------------------------------- */
+const IMG_RE = /\.(jpg|jpeg|png|gif|bmp|webp|svg|ico)$/i;
+const VID_RE = /\.(mp4|mkv|webm|mov|ogv)$/i;
+const AUD_RE = /\.(mp3|wav|m4a|ogg|flac|aac|wma|opus)$/i;
+
+function ensureMediaModal() {
+  let overlay = document.getElementById("filePreviewModal");
+  if (overlay) return overlay;
+
+  overlay = document.createElement("div");
+  overlay.id = "filePreviewModal";
+  Object.assign(overlay.style, {
+    position: "fixed",
+    inset: "0",
+    width: "100vw",
+    height: "100vh",
+    backgroundColor: "rgba(0,0,0,0.7)",
+    display: "flex",
+    justifyContent: "center",
+    alignItems: "center",
+    zIndex: "1000"
+  });
+
+  const root   = document.documentElement;
+  const styles = getComputedStyle(root);
+  const isDark = root.classList.contains('dark-mode');
+  const panelBg = styles.getPropertyValue('--panel-bg').trim() || styles.getPropertyValue('--bg-color').trim() || (isDark ? '#121212' : '#ffffff');
+  const textCol = styles.getPropertyValue('--text-color').trim() || (isDark ? '#eaeaea' : '#111111');
+
+  const navBg     = isDark ? 'rgba(255,255,255,.28)' : 'rgba(0,0,0,.45)';
+  const navFg     = '#fff';
+  const navBorder = isDark ? 'rgba(255,255,255,.35)' : 'rgba(0,0,0,.25)';
+
+  overlay.innerHTML = `
+    <div class="modal-content media-modal" style="
+      position: relative;
+      max-width: 92vw;
+      max-height: 92vh;
+      width: 92vw;
+      box-sizing: border-box;
+      padding: 12px;
+      background: ${panelBg};
+      color: ${textCol};
+      overflow: hidden;
+      border-radius: 10px;
+    ">
+      <div class="media-stage" style="position:relative; display:flex; align-items:center; justify-content:center; height: calc(92vh - 8px);">
+        <!-- filename badge (top-left) -->
+        <div class="media-title-badge" style="
+          position:absolute; top:8px; left:12px; max-width:60vw;
+          padding:4px 10px; border-radius:10px;
+          background: ${isDark ? 'rgba(0,0,0,.55)' : 'rgba(255,255,255,.65)'};
+          color: ${isDark ? '#fff' : '#111'};
+          font-weight:600; font-size:13px; line-height:1.3; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; z-index:1002;">
+        </div>
+
+        <!-- top-right actions row (aligned with your X at top:10px) -->
+        <div class="media-actions-bar" style="
+          position:absolute; top:10px; right:56px; display:flex; gap:6px; align-items:center; z-index:1002;">
+          <span class="status-chip" style="
+            display:none; padding:4px 8px; border-radius:999px; font-size:12px; line-height:1;
+            border:1px solid rgba(250,204,21,.45); background:rgba(250,204,21,.15); color:#facc15;"></span>
+          <div class="action-group" style="display:flex; gap:6px;"></div>
+        </div>
+
+        <!-- your absolute close X -->
+        <span id="closeFileModal" class="close-image-modal" title="${t('close')}">&times;</span>
+
+        <!-- centered media -->
+        <div class="file-preview-container" style="position:relative; text-align:center; flex:1; min-width:0;"></div>
+
+        <!-- high-contrast prev/next -->
+        <button class="nav-left"  aria-label="${t('previous')||'Previous'}" style="
+          position:absolute; left:8px; top:50%; transform:translateY(-50%);
+          height:56px; min-width:44px; padding:0 12px; font-size:42px; line-height:1;
+          background:${navBg}; color:${navFg}; border:1px solid ${navBorder};
+          text-shadow: 0 1px 2px rgba(0,0,0,.6);
+          border-radius:12px; cursor:pointer; display:none; z-index:1001; backdrop-filter: blur(2px);
+          box-shadow: 0 2px 8px rgba(0,0,0,.35);">‹</button>
+        <button class="nav-right" aria-label="${t('next')||'Next'}" style="
+          position:absolute; right:8px; top:50%; transform:translateY(-50%);
+          height:56px; min-width:44px; padding:0 12px; font-size:42px; line-height:1;
+          background:${navBg}; color:${navFg}; border:1px solid ${navBorder};
+          text-shadow: 0 1px 2px rgba(0,0,0,.6);
+          border-radius:12px; cursor:pointer; display:none; z-index:1001; backdrop-filter: blur(2px);
+          box-shadow: 0 2px 8px rgba(0,0,0,.35);">›</button>
+      </div>
+    </div>`;
+
+  document.body.appendChild(overlay);
+
+  function closeModal() {
+    try { overlay.querySelectorAll("video,audio").forEach(m => { try{m.pause()}catch(_){}}); } catch {}
+    if (overlay._onKey) window.removeEventListener('keydown', overlay._onKey);
+    overlay.remove();
+  }
+  overlay.querySelector("#closeFileModal").addEventListener("click", closeModal);
+  overlay.addEventListener("click", (e) => { if (e.target === overlay) closeModal(); });
+
+  return overlay;
+}
+
+function setTitle(overlay, name) {
+  const el = overlay.querySelector('.media-title-badge');
+  if (el) el.textContent = name || '';
+}
+
+function makeMI(name, title) {
+  const b = document.createElement('button');
+  b.className = `material-icons ${name}`;
+  b.textContent = name; // Material Icons font
+  b.title = title;
+  Object.assign(b.style, {
+    width: "32px",
+    height: "32px",
+    display: "flex",
+    alignItems: "center",
+    justifyContent: "center",
+    background: "rgba(0,0,0,.25)",
+    border: "1px solid rgba(255,255,255,.25)",
+    cursor: "pointer",
+    userSelect: "none",
+    fontSize: "20px",
+    padding: "0",
+    borderRadius: "8px",
+    color: "#fff",
+    lineHeight: "1"
+  });
+  return b;
+}
+
+function setNavVisibility(overlay, showPrev, showNext) {
+  const prev = overlay.querySelector('.nav-left');
+  const next = overlay.querySelector('.nav-right');
+  prev.style.display = showPrev ? 'inline-flex' : 'none';
+  next.style.display = showNext ? 'inline-flex' : 'none';
+}
+
+function setRowWatchedBadge(name, watched) {
+  try {
+    const cell = document.querySelector(`tr[data-file-name="${CSS.escape(name)}"] .name-cell`);
+    if (!cell) return;
+    const old = cell.querySelector('.status-badge.watched');
+    if (watched) {
+      if (!old) {
+        const b = document.createElement('span');
+        b.className = 'status-badge watched';
+        b.textContent = t("watched") || t("viewed") || "Watched";
+        b.style.marginLeft = "6px";
+        cell.appendChild(b);
+      }
+    } else if (old) {
+      old.remove();
+    }
+  } catch {}
+}
+
+/* -------------------------------- Entry -------------------------------- */
+export function previewFile(fileUrl, fileName) {
+  const overlay    = ensureMediaModal();
+  const container  = overlay.querySelector(".file-preview-container");
+  const actionWrap = overlay.querySelector(".media-actions-bar .action-group");
+  const statusChip = overlay.querySelector(".media-actions-bar .status-chip");
+
+  // replace nav buttons to clear old listeners
+  let prevBtn = overlay.querySelector('.nav-left');
+  let nextBtn = overlay.querySelector('.nav-right');
+  const newPrev = prevBtn.cloneNode(true);
+  const newNext = nextBtn.cloneNode(true);
+  prevBtn.replaceWith(newPrev);
+  nextBtn.replaceWith(newNext);
+  prevBtn = newPrev; nextBtn = newNext;
+
+  // reset
+  container.innerHTML = "";
+  actionWrap.innerHTML = "";
+  if (statusChip) statusChip.style.display = 'none';
+  if (overlay._onKey) window.removeEventListener('keydown', overlay._onKey);
+  overlay._onKey = null;
+
+  const folder = window.currentFolder || 'root';
+  const name   = fileName;
+  const lower  = (name || '').toLowerCase();
+  const isImage = IMG_RE.test(lower);
+  const isVideo = VID_RE.test(lower);
+  const isAudio = AUD_RE.test(lower);
+
+  setTitle(overlay, name);
+
+  /* -------------------- IMAGES -------------------- */
   if (isImage) {
-    // Create the image element with default transform data.
     const img = document.createElement("img");
     img.src = fileUrl;
     img.className = "image-modal-img";
-    img.style.maxWidth = "80vw";
-    img.style.maxHeight = "80vh";
+    img.style.maxWidth  = "88vw";
+    img.style.maxHeight = "88vh";
     img.style.transition = "transform 0.3s ease";
     img.dataset.scale = 1;
     img.dataset.rotate = 0;
-    img.style.position = 'relative';
-    img.style.zIndex = '1';
+    container.appendChild(img);
 
-    // Filter gallery images for navigation.
-    const images = fileData.filter(file => /\.(jpg|jpeg|png|gif|bmp|webp|svg|ico)$/i.test(file.name));
+    const zoomInBtn   = makeMI('zoom_in',      t('zoom_in')       || 'Zoom In');
+    const zoomOutBtn  = makeMI('zoom_out',     t('zoom_out')      || 'Zoom Out');
+    const rotateLeft  = makeMI('rotate_left',  t('rotate_left')   || 'Rotate Left');
+    const rotateRight = makeMI('rotate_right', t('rotate_right')  || 'Rotate Right');
+    actionWrap.appendChild(zoomInBtn);
+    actionWrap.appendChild(zoomOutBtn);
+    actionWrap.appendChild(rotateLeft);
+    actionWrap.appendChild(rotateRight);
 
-    // Create a flex wrapper to hold left panel, center image, and right panel.
-    const wrapper = document.createElement('div');
-    wrapper.className = 'image-wrapper';
-    wrapper.style.display = 'flex';
-    wrapper.style.alignItems = 'center';
-    wrapper.style.justifyContent = 'center';
-    wrapper.style.position = 'relative';
+    zoomInBtn.addEventListener('click', (e) => {
+      e.stopPropagation();
+      let s = parseFloat(img.dataset.scale) || 1; s += 0.1;
+      img.dataset.scale = s;
+      img.style.transform = `scale(${s}) rotate(${img.dataset.rotate}deg)`;
+    });
+    zoomOutBtn.addEventListener('click', (e) => {
+      e.stopPropagation();
+      let s = parseFloat(img.dataset.scale) || 1; s = Math.max(0.1, s - 0.1);
+      img.dataset.scale = s;
+      img.style.transform = `scale(${s}) rotate(${img.dataset.rotate}deg)`;
+    });
+    rotateLeft.addEventListener('click', (e) => {
+      e.stopPropagation();
+      let r = parseFloat(img.dataset.rotate) || 0; r = (r - 90 + 360) % 360;
+      img.dataset.rotate = r;
+      img.style.transform = `scale(${img.dataset.scale}) rotate(${r}deg)`;
+    });
+    rotateRight.addEventListener('click', (e) => {
+      e.stopPropagation();
+      let r = parseFloat(img.dataset.rotate) || 0; r = (r + 90) % 360;
+      img.dataset.rotate = r;
+      img.style.transform = `scale(${img.dataset.scale}) rotate(${r}deg)`;
+    });
 
-    // --- Left Panel: Contains Zoom controls (top) and Prev button (bottom) ---
-    const leftPanel = document.createElement('div');
-    leftPanel.className = 'left-panel';
-    leftPanel.style.display = 'flex';
-    leftPanel.style.flexDirection = 'column';
-    leftPanel.style.justifyContent = 'space-between';
-    leftPanel.style.alignItems = 'center';
-    leftPanel.style.width = '60px';
-    leftPanel.style.height = '100%';
-    leftPanel.style.zIndex = '10';
+    const images = (Array.isArray(fileData) ? fileData : []).filter(f => IMG_RE.test(f.name));
+    overlay.mediaType  = 'image';
+    overlay.mediaList  = images;
+    overlay.mediaIndex = Math.max(0, images.findIndex(f => f.name === name));
+    setNavVisibility(overlay, images.length > 1, images.length > 1);
 
-    // Top container for zoom buttons.
-    const leftTop = document.createElement('div');
-    leftTop.style.display = 'flex';
-    leftTop.style.flexDirection = 'column';
-    leftTop.style.gap = '4px';
-    // Zoom In button.
-    const zoomInBtn = document.createElement('button');
-    zoomInBtn.className = 'material-icons zoom_in';
-    zoomInBtn.title = 'Zoom In';
-    zoomInBtn.style.background = 'transparent';
-    zoomInBtn.style.border = 'none';
-    zoomInBtn.style.cursor = 'pointer';
-    zoomInBtn.textContent = 'zoom_in';
-    // Zoom Out button.
-    const zoomOutBtn = document.createElement('button');
-    zoomOutBtn.className = 'material-icons zoom_out';
-    zoomOutBtn.title = 'Zoom Out';
-    zoomOutBtn.style.background = 'transparent';
-    zoomOutBtn.style.border = 'none';
-    zoomOutBtn.style.cursor = 'pointer';
-    zoomOutBtn.textContent = 'zoom_out';
-    leftTop.appendChild(zoomInBtn);
-    leftTop.appendChild(zoomOutBtn);
-    leftPanel.appendChild(leftTop);
+    const navigate = (dir) => {
+      if (!overlay.mediaList || overlay.mediaList.length < 2) return;
+      overlay.mediaIndex = (overlay.mediaIndex + dir + overlay.mediaList.length) % overlay.mediaList.length;
+      const newFile = overlay.mediaList[overlay.mediaIndex].name;
+      setTitle(overlay, newFile);
+      img.dataset.scale = 1;
+      img.dataset.rotate = 0;
+      img.style.transform = 'scale(1) rotate(0deg)';
+      img.src = buildPreviewUrl(folder, newFile);
+    };
 
-    // Bottom container for prev button.
-    const leftBottom = document.createElement('div');
-    leftBottom.style.display = 'flex';
-    leftBottom.style.justifyContent = 'center';
-    leftBottom.style.alignItems = 'center';
-    leftBottom.style.width = '100%';
     if (images.length > 1) {
-      const prevBtn = document.createElement("button");
-      prevBtn.textContent = "‹";
-      prevBtn.className = "gallery-nav-btn";
-      prevBtn.style.background = 'transparent';
-      prevBtn.style.border = 'none';
-      prevBtn.style.color = 'white';
-      prevBtn.style.fontSize = '48px';
-      prevBtn.style.cursor = 'pointer';
-      prevBtn.addEventListener("click", function (e) {
-        e.stopPropagation();
-        // Safety check:
-        if (!modal.galleryImages || modal.galleryImages.length === 0) return;
-        modal.galleryCurrentIndex = (modal.galleryCurrentIndex - 1 + modal.galleryImages.length) % modal.galleryImages.length;
-        let newFile = modal.galleryImages[modal.galleryCurrentIndex];
-        modal.querySelector("h4").textContent = newFile.name;
-        img.src = buildPreviewUrl(window.currentFolder || 'root', newFile.name);
-        // Reset transforms.
-        img.dataset.scale = 1;
-        img.dataset.rotate = 0;
-        img.style.transform = 'scale(1) rotate(0deg)';
-      });
-      leftBottom.appendChild(prevBtn);
-    } else {
-      // Insert an empty placeholder for consistent layout.
-      leftBottom.innerHTML = '&nbsp;';
+      prevBtn.addEventListener('click', (e) => { e.stopPropagation(); navigate(-1); });
+      nextBtn.addEventListener('click', (e) => { e.stopPropagation(); navigate(+1); });
+      const onKey = (e) => {
+        if (!document.body.contains(overlay)) { window.removeEventListener("keydown", onKey); return; }
+        if (e.key === "ArrowLeft")  navigate(-1);
+        if (e.key === "ArrowRight") navigate(+1);
+      };
+      window.addEventListener("keydown", onKey);
+      overlay._onKey = onKey;
     }
-    leftPanel.appendChild(leftBottom);
 
-    // --- Center Panel: Contains the image ---
-    const centerPanel = document.createElement('div');
-    centerPanel.className = 'center-image-container';
-    centerPanel.style.flexGrow = '1';
-    centerPanel.style.textAlign = 'center';
-    centerPanel.style.position = 'relative';
-    centerPanel.style.zIndex = '1';
-    centerPanel.appendChild(img);
+    overlay.style.display = "flex";
+    return;
+  }
 
-    // --- Right Panel: Contains Rotate controls (top) and Next button (bottom) ---
-    const rightPanel = document.createElement('div');
-    rightPanel.className = 'right-panel';
-    rightPanel.style.display = 'flex';
-    rightPanel.style.flexDirection = 'column';
-    rightPanel.style.justifyContent = 'space-between';
-    rightPanel.style.alignItems = 'center';
-    rightPanel.style.width = '60px';
-    rightPanel.style.height = '100%';
-    rightPanel.style.zIndex = '10';
+  /* -------------------- PDF => new tab -------------------- */
+  if (lower.endsWith('.pdf')) {
+    const separator = fileUrl.includes('?') ? '&' : '?';
+    const urlWithTs = fileUrl + separator + 't=' + Date.now();
+    window.open(urlWithTs, "_blank");
+    overlay.remove();
+    return;
+  }
 
-    // Top container for rotate buttons.
-    const rightTop = document.createElement('div');
-    rightTop.style.display = 'flex';
-    rightTop.style.flexDirection = 'column';
-    rightTop.style.gap = '4px';
-    // Rotate Left button.
-    const rotateLeftBtn = document.createElement('button');
-    rotateLeftBtn.className = 'material-icons rotate_left';
-    rotateLeftBtn.title = 'Rotate Left';
-    rotateLeftBtn.style.background = 'transparent';
-    rotateLeftBtn.style.border = 'none';
-    rotateLeftBtn.style.cursor = 'pointer';
-    rotateLeftBtn.textContent = 'rotate_left';
-    // Rotate Right button.
-    const rotateRightBtn = document.createElement('button');
-    rotateRightBtn.className = 'material-icons rotate_right';
-    rotateRightBtn.title = 'Rotate Right';
-    rotateRightBtn.style.background = 'transparent';
-    rotateRightBtn.style.border = 'none';
-    rotateRightBtn.style.cursor = 'pointer';
-    rotateRightBtn.textContent = 'rotate_right';
-    rightTop.appendChild(rotateLeftBtn);
-    rightTop.appendChild(rotateRightBtn);
-    rightPanel.appendChild(rightTop);
+  /* -------------------- VIDEOS -------------------- */
+  if (isVideo) {
+    let video = document.createElement("video"); // let so we can rebind
+    video.controls = true;
+    video.style.maxWidth  = "88vw";
+    video.style.maxHeight = "88vh";
+    video.style.objectFit = "contain";
+    container.appendChild(video);
 
-    // Bottom container for next button.
-    const rightBottom = document.createElement('div');
-    rightBottom.style.display = 'flex';
-    rightBottom.style.justifyContent = 'center';
-    rightBottom.style.alignItems = 'center';
-    rightBottom.style.width = '100%';
-    if (images.length > 1) {
-      const nextBtn = document.createElement("button");
-      nextBtn.textContent = "›";
-      nextBtn.className = "gallery-nav-btn";
-      nextBtn.style.background = 'transparent';
-      nextBtn.style.border = 'none';
-      nextBtn.style.color = 'white';
-      nextBtn.style.fontSize = '48px';
-      nextBtn.style.cursor = 'pointer';
-      nextBtn.addEventListener("click", function (e) {
-        e.stopPropagation();
-        // Safety check:
-        if (!modal.galleryImages || modal.galleryImages.length === 0) return;
-        modal.galleryCurrentIndex = (modal.galleryCurrentIndex + 1) % modal.galleryImages.length;
-        let newFile = modal.galleryImages[modal.galleryCurrentIndex];
-        modal.querySelector("h4").textContent = newFile.name;
-        img.src = buildPreviewUrl(window.currentFolder || 'root', newFile.name);
-        // Reset transforms.
-        img.dataset.scale = 1;
-        img.dataset.rotate = 0;
-        img.style.transform = 'scale(1) rotate(0deg)';
-      });
-      rightBottom.appendChild(nextBtn);
-    } else {
-      // Insert a placeholder so that center remains properly aligned.
-      rightBottom.innerHTML = '&nbsp;';
+    const markBtn  = document.createElement('button');
+    const clearBtn = document.createElement('button');
+    markBtn.className  = 'btn btn-sm btn-success';
+    clearBtn.className = 'btn btn-sm btn-secondary';
+    markBtn.textContent  = t("mark_as_viewed") || "Mark as viewed";
+    clearBtn.textContent = t("clear_progress") || "Clear progress";
+    actionWrap.appendChild(markBtn);
+    actionWrap.appendChild(clearBtn);
+
+    const videos = (Array.isArray(fileData) ? fileData : []).filter(f => VID_RE.test(f.name));
+    overlay.mediaType  = 'video';
+    overlay.mediaList  = videos;
+    overlay.mediaIndex = Math.max(0, videos.findIndex(f => f.name === name));
+    setNavVisibility(overlay, videos.length > 1, videos.length > 1);
+
+    const setVideoSrc = (nm) => { video.src = buildPreviewUrl(folder, nm); setTitle(overlay, nm); };
+
+    const SAVE_INTERVAL_MS = 5000;
+    let lastSaveAt = 0;
+    let pending = false;
+
+    async function getProgress(nm) {
+      try {
+        const res = await fetch(`/api/media/getProgress.php?folder=${encodeURIComponent(folder)}&file=${encodeURIComponent(nm)}&t=${Date.now()}`, { credentials: "include" });
+        const data = await res.json();
+        return data && data.state ? data.state : null;
+      } catch { return null; }
     }
-    rightPanel.appendChild(rightBottom);
-
-    // Assemble panels into the wrapper.
-    wrapper.appendChild(leftPanel);
-    wrapper.appendChild(centerPanel);
-    wrapper.appendChild(rightPanel);
-    container.appendChild(wrapper);
-
-    // --- Set up zoom controls event listeners ---
-    zoomInBtn.addEventListener('click', function (e) {
-      e.stopPropagation();
-      let scale = parseFloat(img.dataset.scale) || 1;
-      scale += 0.1;
-      img.dataset.scale = scale;
-      img.style.transform = 'scale(' + scale + ') rotate(' + img.dataset.rotate + 'deg)';
-    });
-    zoomOutBtn.addEventListener('click', function (e) {
-      e.stopPropagation();
-      let scale = parseFloat(img.dataset.scale) || 1;
-      scale = Math.max(0.1, scale - 0.1);
-      img.dataset.scale = scale;
-      img.style.transform = 'scale(' + scale + ') rotate(' + img.dataset.rotate + 'deg)';
-    });
-
-    // Attach rotation control listeners (always present now).
-    rotateLeftBtn.addEventListener('click', function (e) {
-      e.stopPropagation();
-      let rotate = parseFloat(img.dataset.rotate) || 0;
-      rotate = (rotate - 90 + 360) % 360;
-      img.dataset.rotate = rotate;
-      img.style.transform = 'scale(' + img.dataset.scale + ') rotate(' + rotate + 'deg)';
-    });
-    rotateRightBtn.addEventListener('click', function (e) {
-      e.stopPropagation();
-      let rotate = parseFloat(img.dataset.rotate) || 0;
-      rotate = (rotate + 90) % 360;
-      img.dataset.rotate = rotate;
-      img.style.transform = 'scale(' + img.dataset.scale + ') rotate(' + rotate + 'deg)';
-    });
-
-    // Save gallery details if there is more than one image.
-    if (images.length > 1) {
-      modal.galleryImages = images;
-      modal.galleryCurrentIndex = images.findIndex(f => f.name === fileName);
+    async function sendProgress({nm, seconds, duration, completed, clear}) {
+      try {
+        pending = true;
+        const res = await fetch("/api/media/updateProgress.php", {
+          method: "POST",
+          credentials: "include",
+          headers: { "Content-Type": "application/json", "X-CSRF-Token": window.csrfToken },
+          body: JSON.stringify({ folder, file: nm, seconds, duration, completed, clear })
+        });
+        const data = await res.json();
+        pending = false;
+        return data;
+      } catch (e) { pending = false; console.error(e); return null; }
     }
-  } else {
-    // Handle non-image file previews.
-    if (extension === "pdf") {
-      // build a cache‐busted URL
-      const separator = fileUrl.includes('?') ? '&' : '?';
-      const urlWithTs = fileUrl + separator + 't=' + Date.now();
+    const lsKey = (nm) => `videoProgress-${folder}/${nm}`;
 
-      // open in a new tab (avoids CSP frame-ancestors)
-      window.open(urlWithTs, "_blank");
+    function renderStatus(state) {
+      if (!statusChip) return;
+      // Completed
+      if (state && state.completed) {
+        
+        statusChip.textContent = (t('viewed') || 'Viewed') + ' ✓';
+        statusChip.style.display = 'inline-block';
+        statusChip.style.borderColor = 'rgba(34,197,94,.45)';
+        statusChip.style.background  = 'rgba(34,197,94,.15)';
+        statusChip.style.color       = '#22c55e';
+        markBtn.style.display  = 'none';
+        clearBtn.style.display = '';
+        clearBtn.textContent   = t('reset_progress') || t('clear_progress') || 'Reset';
+        return;
+      }
+      // In progress
+      if (state && Number.isFinite(state.seconds) && Number.isFinite(state.duration) && state.duration > 0) {
+        const pct = Math.max(1, Math.min(99, Math.round((state.seconds / state.duration) * 100)));
+        statusChip.textContent = `${pct}%`;
+        statusChip.style.display = 'inline-block';
+        statusChip.style.borderColor = 'rgba(250,204,21,.45)';
+        statusChip.style.background  = 'rgba(250,204,21,.15)';
+        statusChip.style.color       = '#facc15';
+        markBtn.style.display  = '';
+        clearBtn.style.display = '';
+        clearBtn.textContent   = t('reset_progress') || t('clear_progress') || 'Reset';
+        return;
+      }
+      // No progress
+      statusChip.style.display = 'none';
+      markBtn.style.display  = '';
+      clearBtn.style.display = 'none';
+    }
 
-      // tear down the just-created modal
-      const modal = document.getElementById("filePreviewModal");
-      if (modal) modal.remove();
+    function bindVideoEvents(nm) {
+      const nv = video.cloneNode(true);
+      video.replaceWith(nv);
+      video = nv;
 
-      // stop further preview logic
-      return;
-    } else if (/\.(mp4|mkv|webm|mov|ogv)$/i.test(fileName)) {
-      const video = document.createElement("video");
-      video.src = fileUrl;
-      video.controls = true;
-      video.className = "image-modal-img";
-
-      const progressKey = 'videoProgress-' + fileUrl;
-      video.addEventListener("loadedmetadata", () => {
-        const savedTime = localStorage.getItem(progressKey);
-        if (savedTime) {
-          video.currentTime = parseFloat(savedTime);
+      video.addEventListener("loadedmetadata", async () => {
+        try {
+          const state = await getProgress(nm);
+          if (state && Number.isFinite(state.seconds) && state.seconds > 0 && state.seconds < (video.duration || Infinity)) {
+            video.currentTime = state.seconds;
+            const seconds = Math.floor(video.currentTime || 0);
+const duration = Math.floor(video.duration || 0);
+setFileProgressBadge(nm, seconds, duration);
+            showToast((t("resumed_from") || "Resumed from") + " " + Math.floor(state.seconds) + "s");
+          } else {
+            const ls = localStorage.getItem(lsKey(nm));
+            if (ls) video.currentTime = parseFloat(ls);
+          }
+          renderStatus(state || null);
+        } catch {
+          renderStatus(null);
         }
       });
-      video.addEventListener("timeupdate", () => {
-        localStorage.setItem(progressKey, video.currentTime);
+
+      video.addEventListener("timeupdate", async () => {
+        const now = Date.now();
+        if ((now - lastSaveAt) < SAVE_INTERVAL_MS || pending) return;
+        lastSaveAt = now;
+        const seconds = Math.floor(video.currentTime || 0);
+        const duration = Math.floor(video.duration || 0);
+        sendProgress({ nm, seconds, duration });
+        setFileProgressBadge(nm, seconds, duration);
+        try { localStorage.setItem(lsKey(nm), String(seconds)); } catch {}
+        renderStatus({ seconds, duration, completed: false });
       });
-      video.addEventListener("ended", () => {
-        localStorage.removeItem(progressKey);
+
+      video.addEventListener("ended", async () => {
+        const duration = Math.floor(video.duration || 0);
+        await sendProgress({ nm, seconds: duration, duration, completed: true });
+        try { localStorage.removeItem(lsKey(nm)); } catch {}
+        showToast(t("marked_viewed") || "Marked as viewed");
+        setFileWatchedBadge(nm, true);
+        renderStatus({ seconds: duration, duration, completed: true });
       });
-      container.appendChild(video);
-    } else if (/\.(mp3|wav|m4a|ogg|flac|aac|wma|opus)$/i.test(fileName)) {
-      const audio = document.createElement("audio");
-      audio.src = fileUrl;
-      audio.controls = true;
-      audio.className = "audio-modal";
-      audio.style.maxWidth = "80vw";
-      container.appendChild(audio);
-    } else {
-      container.textContent = "Preview not available for this file type.";
+
+      markBtn.onclick = async () => {
+        const duration = Math.floor(video.duration || 0);
+        await sendProgress({ nm, seconds: duration, duration, completed: true });
+        showToast(t("marked_viewed") || "Marked as viewed");
+        setFileWatchedBadge(nm, true);
+        renderStatus({ seconds: duration, duration, completed: true });
+      };
+      clearBtn.onclick = async () => {
+        await sendProgress({ nm, seconds: 0, duration: null, completed: false, clear: true });
+        try { localStorage.removeItem(lsKey(nm)); } catch {}
+        showToast(t("progress_cleared") || "Progress cleared");
+        setFileWatchedBadge(nm, false);
+        renderStatus(null);
+      };
     }
+
+    const navigate = (dir) => {
+      if (!overlay.mediaList || overlay.mediaList.length < 2) return;
+      overlay.mediaIndex = (overlay.mediaIndex + dir + overlay.mediaList.length) % overlay.mediaList.length;
+      const nm = overlay.mediaList[overlay.mediaIndex].name;
+      setVideoSrc(nm);
+      bindVideoEvents(nm);
+    };
+
+    if (videos.length > 1) {
+      prevBtn.addEventListener('click', (e) => { e.stopPropagation(); navigate(-1); });
+      nextBtn.addEventListener('click', (e) => { e.stopPropagation(); navigate(+1); });
+      const onKey = (e) => {
+        if (!document.body.contains(overlay)) { window.removeEventListener("keydown", onKey); return; }
+        if (e.key === "ArrowLeft")  navigate(-1);
+        if (e.key === "ArrowRight") navigate(+1);
+      };
+      window.addEventListener("keydown", onKey);
+      overlay._onKey = onKey;
+    }
+
+    setVideoSrc(name);
+    renderStatus(null);
+    bindVideoEvents(name);
+    overlay.style.display = "flex";
+    return;
+  }
+
+  /* -------------------- AUDIO / OTHER -------------------- */
+  if (isAudio) {
+    const audio = document.createElement("audio");
+    audio.src = fileUrl;
+    audio.controls = true;
+    audio.className = "audio-modal";
+    audio.style.maxWidth = "88vw";
+    container.appendChild(audio);
+    overlay.style.display = "flex";
+  } else {
+    container.textContent = t("preview_not_available") || "Preview not available for this file type.";
+    overlay.style.display = "flex";
   }
-  modal.style.display = "flex";
 }
 
-// Preserve original functionality.
+/* -------------------------------- Small display helper -------------------------------- */
 export function displayFilePreview(file, container) {
   const actualFile = file.file || file;
   if (!(actualFile instanceof File)) {
@@ -472,10 +594,9 @@ export function displayFilePreview(file, container) {
     return;
   }
   container.style.display = "inline-block";
-  while (container.firstChild) {
-    container.removeChild(container.firstChild);
-  }
-  if (/\.(jpg|jpeg|png|gif|bmp|webp|svg|ico)$/i.test(actualFile.name)) {
+  while (container.firstChild) container.removeChild(container.firstChild);
+
+  if (IMG_RE.test(actualFile.name)) {
     const img = document.createElement("img");
     img.src = URL.createObjectURL(actualFile);
     img.classList.add("file-preview-img");
@@ -488,5 +609,6 @@ export function displayFilePreview(file, container) {
   }
 }
 
+// expose for HTML onclick usage
 window.previewFile = previewFile;
 window.openShareModal = openShareModal;