Add support for post page

assets/js/comments.js

@@ -0,0 +1,174 @@
+var video_data = JSON.parse(document.getElementById('video_data').textContent);
+
+var spinnerHTML = '<h3 style="text-align:center"><div class="loading"><i class="icon ion-ios-refresh"></i></div></h3>';
+var spinnerHTMLwithHR = spinnerHTML + '<hr>';
+
+String.prototype.supplant = function (o) {
+    return this.replace(/{([^{}]*)}/g, function (a, b) {
+        var r = o[b];
+        return typeof r === 'string' || typeof r === 'number' ? r : a;
+    });
+};
+
+function toggle_comments(event) {
+    var target = event.target;
+    var body = target.parentNode.parentNode.parentNode.children[1];
+    if (body.style.display === 'none') {
+        target.textContent = '[ − ]';
+        body.style.display = '';
+    } else {
+        target.textContent = '[ + ]';
+        body.style.display = 'none';
+    }
+}
+
+function hide_youtube_replies(event) {
+    var target = event.target;
+
+    var sub_text = target.getAttribute('data-inner-text');
+    var inner_text = target.getAttribute('data-sub-text');
+
+    var body = target.parentNode.parentNode.children[1];
+    body.style.display = 'none';
+
+    target.textContent = sub_text;
+    target.onclick = show_youtube_replies;
+    target.setAttribute('data-inner-text', inner_text);
+    target.setAttribute('data-sub-text', sub_text);
+}
+
+function show_youtube_replies(event) {
+    var target = event.target;
+
+    var sub_text = target.getAttribute('data-inner-text');
+    var inner_text = target.getAttribute('data-sub-text');
+
+    var body = target.parentNode.parentNode.children[1];
+    body.style.display = '';
+
+    target.textContent = sub_text;
+    target.onclick = hide_youtube_replies;
+    target.setAttribute('data-inner-text', inner_text);
+    target.setAttribute('data-sub-text', sub_text);
+}
+
+function get_youtube_comments() {
+    var comments = document.getElementById('comments');
+
+    var fallback = comments.innerHTML;
+    comments.innerHTML = spinnerHTML;
+
+    var baseUrl = video_data.base_url || '/api/v1/comments/'+ video_data.id
+    var url = baseUrl +
+        '?format=html' +
+        '&hl=' + video_data.preferences.locale +
+        '&thin_mode=' + video_data.preferences.thin_mode;
+
+    if (video_data.ucid) {
+        url += '&ucid=' + video_data.ucid
+    }
+
+    var onNon200 = function (xhr) { comments.innerHTML = fallback; };
+    if (video_data.params.comments[1] === 'youtube')
+        onNon200 = function (xhr) {};
+
+    helpers.xhr('GET', url, {retries: 5, entity_name: 'comments'}, {
+        on200: function (response) {
+            var commentInnerHtml = ' \
+            <div> \
+                <h3> \
+                    <a href="javascript:void(0)">[ − ]</a> \
+                    {commentsText}  \
+                </h3> \
+                <b> \
+                '
+                if (video_data.support_reddit) {
+                    commentInnerHtml += ' <a href="javascript:void(0)" data-comments="reddit"> \
+                        {redditComments} \
+                    </a> \
+                    '
+                }
+                commentInnerHtml += ' </b> \
+            </div> \
+            <div>{contentHtml}</div> \
+            <hr>'
+            commentInnerHtml = commentInnerHtml.supplant({
+                contentHtml: response.contentHtml,
+                redditComments: video_data.reddit_comments_text,
+                commentsText: video_data.comments_text.supplant({
+                    // toLocaleString correctly splits number with local thousands separator. e.g.:
+                    // '1,234,567.89' for user with English locale
+                    // '1 234 567,89' for user with Russian locale
+                    // '1.234.567,89' for user with Portuguese locale
+                    commentCount: response.commentCount.toLocaleString()
+                })
+            });
+            comments.innerHTML = commentInnerHtml;
+            comments.children[0].children[0].children[0].onclick = toggle_comments;
+            if (video_data.support_reddit) {
+                comments.children[0].children[1].children[0].onclick = swap_comments;
+            }
+        },
+        onNon200: onNon200, // declared above
+        onError: function (xhr) {
+            comments.innerHTML = spinnerHTML;
+        },
+        onTimeout: function (xhr) {
+            comments.innerHTML = spinnerHTML;
+        }
+    });
+}
+
+function get_youtube_replies(target, load_more, load_replies) {
+    var continuation = target.getAttribute('data-continuation');
+
+    var body = target.parentNode.parentNode;
+    var fallback = body.innerHTML;
+    body.innerHTML = spinnerHTML;
+    var baseUrl = video_data.base_url || '/api/v1/comments/'+ video_data.id
+    var url = baseUrl +
+        '?format=html' +
+        '&hl=' + video_data.preferences.locale +
+        '&thin_mode=' + video_data.preferences.thin_mode +
+        '&continuation=' + continuation;
+    
+    if (video_data.ucid) {
+        url += '&ucid=' + video_data.ucid
+    }
+    if (load_replies) url += '&action=action_get_comment_replies';
+
+    helpers.xhr('GET', url, {}, {
+        on200: function (response) {
+            if (load_more) {
+                body = body.parentNode.parentNode;
+                body.removeChild(body.lastElementChild);
+                body.insertAdjacentHTML('beforeend', response.contentHtml);
+            } else {
+                body.removeChild(body.lastElementChild);
+
+                var p = document.createElement('p');
+                var a = document.createElement('a');
+                p.appendChild(a);
+
+                a.href = 'javascript:void(0)';
+                a.onclick = hide_youtube_replies;
+                a.setAttribute('data-sub-text', video_data.hide_replies_text);
+                a.setAttribute('data-inner-text', video_data.show_replies_text);
+                a.textContent = video_data.hide_replies_text;
+
+                var div = document.createElement('div');
+                div.innerHTML = response.contentHtml;
+
+                body.appendChild(p);
+                body.appendChild(div);
+            }
+        },
+        onNon200: function (xhr) {
+            body.innerHTML = fallback;
+        },
+        onTimeout: function (xhr) {
+            console.warn('Pulling comments failed');
+            body.innerHTML = fallback;
+        }
+    });
+}