https://economystandard.com/js/tweet-renderer.js

1// Tweet widget renderer for superblog
2// Decodes base64-encoded HTML content and renders tweets in place
3(function () {
4  'use strict';
5
6  if (window.__tweetRendererInit) return;
7  window.__tweetRendererInit = true;
8
9  function decodeBase64(str) {
10    try {
11      return decodeURIComponent(atob(str));
12    } catch (e) {
13      // Fallback for simple ASCII
14      try {
15        return atob(str);
16      } catch (e2) {
17        console.error('Failed to decode base64:', e2);
18        return '';
19      }
20    }
21  }
22
23  // Queue of containers waiting for Twitter widgets to load
24  var pendingContainers = [];
25  var twitterScriptLoading = false;
26
27  function loadTwitterWidgets(container) {
28    // If Twitter is ready, load immediately
29    if (window.twttr && window.twttr.widgets) {
30      window.twttr.widgets.load(container);
31      return;
32    }
33
34    // Add to pending queue
35    pendingContainers.push(container);
36
37    // If we're already loading the script, just wait
38    if (twitterScriptLoading) return;
39
40    // Check if script tag exists
41    var existingScript = document.querySelector('script[src*="platform.twitter.com/widgets.js"]');
42
43    if (!existingScript) {
44      twitterScriptLoading = true;
45      var script = document.createElement('script');
46      script.src = 'https://platform.twitter.com/widgets.js';
47      script.async = true;
48      script.charset = 'utf-8';
49      document.head.appendChild(script);
50    }
51
52    // Poll for twttr to be ready
53    var checkTwitter = function() {
54      if (window.twttr && window.twttr.widgets) {
55        // Process all pending containers
56        while (pendingContainers.length > 0) {
57          var c = pendingContainers.shift();
58          window.twttr.widgets.load(c);
59        }
60        twitterScriptLoading = false;
61      } else {
62        setTimeout(checkTwitter, 200);
63      }
64    };
65    checkTwitter();
66  }
67
68  function processTweetWidgets() {
69    var widgets = document.querySelectorAll('div.velocity-tweet[data-html]');
70
71    widgets.forEach(function(widget) {
72      // Skip if already processed
73      if (widget.dataset.rendered === 'true') return;
74      widget.dataset.rendered = 'true';
75
76      var encodedHtml = widget.getAttribute('data-html');
77
78      if (!encodedHtml) return;
79
80      var htmlContent = decodeBase64(encodedHtml);
81
82      if (!htmlContent) return;
83
84      // Insert the decoded HTML content
85      widget.innerHTML = htmlContent;
86
87      // Execute any scripts in the HTML (Twitter oEmbed includes a script tag)
88      var scripts = widget.querySelectorAll('script');
89      scripts.forEach(function(script) {
90        var newScript = document.createElement('script');
91        if (script.src) {
92          newScript.src = script.src;
93          newScript.async = true;
94          newScript.charset = 'utf-8';
95        } else {
96          newScript.textContent = script.textContent;
97        }
98        document.head.appendChild(newScript);
99        // Remove original script from widget to avoid confusion
100        script.remove();
101      });
102
103      // Also manually trigger widget loading as a fallback
104      requestAnimationFrame(function() {
105        loadTwitterWidgets(widget);
106      });
107    });
108  }
109
110  function init() {
111    // Small delay to ensure DOM is ready
112    setTimeout(processTweetWidgets, 150);
113  }
114
115  // Run on initial load
116  if (document.readyState === 'loading') {
117    document.addEventListener('DOMContentLoaded', init);
118  } else {
119    init();
120  }
121
122  // Re-run on Turbo navigation
123  document.addEventListener('turbo:load', init);
124})();