Add a page to update all thumbnails through AJAX requests in both templates

3 files changed, 135 insertions, 0 deletions

diff --git a/assets/common/js/thumbnails-update.js b/assets/common/js/thumbnails-update.js
new file mode 100644
index 00000000..b66ca3ae
--- /dev/null
+++ b/assets/common/js/thumbnails-update.js
@@ -0,0 +1,51 @@
+/**
+ * Script used in the thumbnails update page.
+ *
+ * It retrieves the list of link IDs to update, and execute AJAX requests
+ * to update their thumbnails, while updating the progress bar.
+ */
+
+/**
+ * Update the thumbnail of the link with the current i index in ids.
+ * It contains a recursive call to retrieve the thumb of the next link when it succeed.
+ * It also update the progress bar and other visual feedback elements.
+ *
+ * @param {array}  ids      List of LinkID to update
+ * @param {int}    i        Current index in ids
+ * @param {object} elements List of DOM element to avoid retrieving them at each iteration
+ */
+function updateThumb(ids, i, elements) {
+  const xhr = new XMLHttpRequest();
+  xhr.open('POST', '?do=ajax_thumb_update');
+  xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
+  xhr.responseType = 'json';
+  xhr.onload = () => {
+    if (xhr.status !== 200) {
+      alert(`An error occurred. Return code: ${xhr.status}`);
+    } else {
+      const { response } = xhr;
+      i += 1;
+      elements.progressBar.style.width = `${(i * 100) / ids.length}%`;
+      elements.current.innerHTML = i;
+      elements.title.innerHTML = response.title;
+      if (response.thumbnail !== false) {
+        elements.thumbnail.innerHTML = `<img src="${response.thumbnail}">`;
+      }
+      if (i < ids.length) {
+        updateThumb(ids, i, elements);
+      }
+    }
+  };
+  xhr.send(`id=${ids[i]}`);
+}
+
+(() => {
+  const ids = document.getElementsByName('ids')[0].value.split(',');
+  const elements = {
+    progressBar: document.querySelector('.progressbar > div'),
+    current: document.querySelector('.progress-current'),
+    thumbnail: document.querySelector('.thumbnail-placeholder'),
+    title: document.querySelector('.thumbnail-link-title'),
+  };
+  updateThumb(ids, 0, elements);
+})();
diff --git a/assets/default/scss/shaarli.scss b/assets/default/scss/shaarli.scss
index 425a0490..6a8a8bc7 100644
--- a/assets/default/scss/shaarli.scss
+++ b/assets/default/scss/shaarli.scss
@@ -146,6 +146,13 @@ body,
   background-color: $main-green;
 }
 
+.pure-alert-warning {
+  a {
+    color: $warning-text;
+    font-weight: bold;
+  }
+}
+
 .page-single-alert {
   margin-top: 100px;
 }
@@ -1547,3 +1554,40 @@ form {
 .pure-button-shaarli {
   background-color: $main-green;
 }
+
+.progressbar {
+  border-radius: 6px;
+  background-color: $main-green;
+  padding: 1px;
+
+  > div {
+    border-radius: 10px;
+    background: repeating-linear-gradient(
+      -45deg,
+      $almost-white,
+      $almost-white 6px,
+      $background-color 6px,
+      $background-color 12px
+    );
+    width: 0%;
+    height: 10px;
+  }
+}
+
+.thumbnails-page-container {
+  .progress-counter {
+    padding: 10px 0 20px;
+  }
+
+  .thumbnail-placeholder {
+    margin: 10px auto;
+    background-color: $light-grey;
+  }
+
+  .thumbnail-link-title {
+    padding-bottom: 20px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+}
diff --git a/assets/vintage/css/shaarli.css b/assets/vintage/css/shaarli.css
index 05e2c17e..87c440c8 100644
--- a/assets/vintage/css/shaarli.css
+++ b/assets/vintage/css/shaarli.css
@@ -1210,3 +1210,43 @@ ul.errors {
     width: 13px;
     height: 13px;
 }
+
+.thumbnails-update-container {
+    padding: 20px 0;
+    width: 50%;
+    margin: auto;
+}
+
+.thumbnails-update-container .thumbnail-placeholder {
+    background: grey;
+    margin: auto;
+}
+
+.thumbnails-update-container .thumbnail-link-title {
+    width: 75%;
+    margin: auto;
+
+    padding-bottom: 20px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+}
+
+.progressbar {
+    border-radius: 6px;
+    background-color: #111;
+    padding: 1px;
+}
+
+.progressbar > div {
+    border-radius: 10px;
+    background: repeating-linear-gradient(
+        -45deg,
+        #f5f5f5,
+        #f5f5f5 6px,
+        #d0d0d0 6px,
+        #d0d0d0 12px
+    );
+    width: 0%;
+    height: 10px;
+}