A Better Place 0.0.1

README.md

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+A Better Place
+==============
+
+Reading Twitter in the morning can be awful - an endless stream of bad news, anger, and depression. It sets the tone for your day.
+
+Researchers at Facebook conducted unethical research proving the attitude of social media seriously affects mood for extended periods of time.
+
+A Better Place is a positivity filter bubble. It uses terrible sentiment analysis to strip out negative Twitter posts from your timeline; hopefully leaving you with a few morsels that make your day tolerable.
+
+It comes in both [Chrome extension](https://chrome.google.com/webstore/detail/a-better-place/ajihembjdmpchmpcocjlagkfcobmdaog) and bookmarklet flavours, however only the Chrome extension will automatically kick in between the hours of 7am and 11am every day. You can use the bookmarklet whenever you need it.
+
+Have a nice day.
+
+Bookmarklet
+=========
+
+Github is terrible and won't let you embed bookmarklets. Create a new bookmark and add the following as the link.
+```
+javascript:(function(){ document.body.appendChild(document.createElement('script')).src='https://raw.githack.com/Jonty/abetterplace/master/src/load.js'; })();
+```
+Alternatively there's a draggable link [over on the main site](http://jonty.co.uk/abetterplace).
+
+Developers
+========
+
+This is using [AFIN-111](http://www2.imm.dtu.dk/pubdb/views/publication_details.php?id=6010) sentiment analysis, which is awful, but still better than everything else when using twitter. A small amount of the code is taken from [sentiment](https://github.com/thisandagain/sentiment) by [thisandagain](https://github.com/thisandagain). Thanks.
+
+If you want to play around with this you can see debug logging in the JS console, however Twitter disable it - you can re-enable it by issuing `delete console.log` in the console.

chrome_extension/manifest.json

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+{
+  "name": "A Better Place",
+  "version": "0.0.1",
+  "manifest_version": 2,
+  "description": "Hides all negative tweets on twitter.com between the hours of 7am and 11am.",
+  "homepage_url": "http://jonty.co.uk/abetterplace",
+  "content_scripts": [
+    {
+      "matches": [
+        "https://twitter.com/*"
+      ],
+      "js": [
+        "src/inject.js"
+      ]
+    }
+  ],
+  "web_accessible_resources": ["src/afinn.js", "src/abp.js", "src/run.js"]
+}

chrome_extension/src/abp.js

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+../../src/abp.js

chrome_extension/src/afinn.js

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+../../src/afinn.js

chrome_extension/src/inject.js

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+chrome.extension.sendMessage({}, function(response) {
+	var readyStateCheckInterval = setInterval(function() {
+	if (document.readyState === "complete") {
+		clearInterval(readyStateCheckInterval);
+
+        var date = new Date();
+        var currentHour = date.getHours();
+
+        if (currentHour >= 7 && currentHour < 11) {
+            ['afinn.js', 'abp.js', 'run.js'].map(function(script) {
+                var s = document.createElement('script');
+                s.src = chrome.extension.getURL('src/' + script);
+                s.onload = function() {
+                    this.parentNode.removeChild(this);
+                };
+                (document.head||document.documentElement).appendChild(s);
+            });
+        }
+
+	}
+	}, 10);
+});

chrome_extension/src/run.js

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+console.log("Load complete, starting ABP...");
+document.styleSheets[0].insertRule("[tweet-is-negative=true]{display:none}", 0);
+setInterval(abp_process_tweets, 200);

src/abp.js

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+function abp_tokenise (input) {
+    return input
+            .replace(/[^a-zA-Z ]+/g, '')
+            .replace('/ {2,}/',' ')
+            .toLowerCase()
+            .split(' ');
+}
+
+function abp_sentiment (phrase) {
+    var tokens      = abp_tokenise(phrase),
+        score       = 0;
+
+    var len = tokens.length;
+    while (len--) { 
+        var obj = tokens[len];
+        var item = afinn[obj];
+        if (typeof item === 'undefined') continue;
+
+        score += item;
+    }
+
+    return score;
+}
+
+function abp_process_tweets() {
+    $('.tweet-text').not('.abp_processed').each(function(i, node) {
+        var score = abp_sentiment(node.textContent);
+        if (score <= 0) {
+            console.log('Removing: ' + node.textContent + '(Score: ' + score + ')');
+            node.parentNode.parentNode.setAttribute('tweet-is-negative', 'true');
+        } else {
+            console.log('Leaving: ' + node.textContent + '(Score: ' + score + ')');
+        }
+
+        node.className = node.className + 'abp_processed';
+    })
+}

src/load.js

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+(function() {
+    var scripts = document.getElementsByTagName("script");
+    var CurrentScript = scripts[scripts.length-1].src;
+
+    var PathIndex = CurrentScript.lastIndexOf("/") + 1;
+    var Filepath = CurrentScript.substr(0, PathIndex);
+
+    var d = new Date();
+    var n = d.getTime();
+
+    $.getScript(Filepath + 'afinn.js?' + n).done(function(script, status) {
+        $.getScript(Filepath + 'abp.js?' + n).done(function(script, status) {
+            console.log("Load complete, starting ABP...");
+            document.styleSheets[0].insertRule("[tweet-is-negative=true]{display:none}", 0);
+            setInterval(abp_process_tweets, 200);
+        })
+    })
+
+})();