From 2a15365e303a7da6c97ba5f2e981cd318bbbe621 Mon Sep 17 00:00:00 2001
From: dgtlmoon <dgtlmoon@gmail.com>
Date: Sat, 19 Nov 2022 14:17:30 +0100
Subject: [PATCH] Move diff handler to its own JS to make it easier to manage

---
 changedetectionio/static/js/diff-render.js | 106 ++++++++++++++++++
 changedetectionio/templates/diff.html      | 118 +--------------------
 2 files changed, 110 insertions(+), 114 deletions(-)
 create mode 100644 changedetectionio/static/js/diff-render.js

diff --git a/changedetectionio/static/js/diff-render.js b/changedetectionio/static/js/diff-render.js
new file mode 100644
index 000000000..716bccf78
--- /dev/null
+++ b/changedetectionio/static/js/diff-render.js
@@ -0,0 +1,106 @@
+var a = document.getElementById('a');
+var b = document.getElementById('b');
+var result = document.getElementById('result');
+
+function changed() {
+    // https://github.com/kpdecker/jsdiff/issues/389
+    // I would love to use `{ignoreWhitespace: true}` here but it breaks the formatting
+    var diff = Diff[window.diffType](a.textContent, b.textContent);
+    var fragment = document.createDocumentFragment();
+    for (var i = 0; i < diff.length; i++) {
+
+        if (diff[i].added && diff[i + 1] && diff[i + 1].removed) {
+            var swap = diff[i];
+            diff[i] = diff[i + 1];
+            diff[i + 1] = swap;
+        }
+
+        var node;
+        if (diff[i].removed) {
+            node = document.createElement('del');
+            node.classList.add("change");
+            node.appendChild(document.createTextNode(diff[i].value));
+
+        } else if (diff[i].added) {
+            node = document.createElement('ins');
+            node.classList.add("change");
+            node.appendChild(document.createTextNode(diff[i].value));
+        } else {
+            node = document.createTextNode(diff[i].value);
+        }
+        fragment.appendChild(node);
+    }
+
+    result.textContent = '';
+    result.appendChild(fragment);
+
+    // Jump at start
+    inputs.current = 0;
+    next_diff();
+}
+
+window.onload = function () {
+
+
+    /* Convert what is options from UTC time.time() to local browser time */
+    var diffList = document.getElementById("diff-version");
+    if (typeof (diffList) != 'undefined' && diffList != null) {
+        for (var option of diffList.options) {
+            var dateObject = new Date(option.value * 1000);
+            option.label = dateObject.toLocaleString();
+        }
+    }
+
+    /* Set current version date as local time in the browser also */
+    var current_v = document.getElementById("current-v-date");
+    var dateObject = new Date(newest_version_timestamp);
+    current_v.innerHTML = dateObject.toLocaleString();
+    onDiffTypeChange(document.querySelector('#settings [name="diff_type"]:checked'));
+    changed();
+};
+
+a.onpaste = a.onchange =
+    b.onpaste = b.onchange = changed;
+
+if ('oninput' in a) {
+    a.oninput = b.oninput = changed;
+} else {
+    a.onkeyup = b.onkeyup = changed;
+}
+
+function onDiffTypeChange(radio) {
+    window.diffType = radio.value;
+// Not necessary
+//	document.title = "Diff " + radio.value.slice(4);
+}
+
+var radio = document.getElementsByName('diff_type');
+for (var i = 0; i < radio.length; i++) {
+    radio[i].onchange = function (e) {
+        onDiffTypeChange(e.target);
+        changed();
+    }
+}
+
+
+var inputs = document.getElementsByClassName('change');
+inputs.current = 0;
+
+
+function next_diff() {
+
+    var element = inputs[inputs.current];
+    var headerOffset = 80;
+    var elementPosition = element.getBoundingClientRect().top;
+    var offsetPosition = elementPosition - headerOffset + window.scrollY;
+
+    window.scrollTo({
+        top: offsetPosition,
+        behavior: "smooth"
+    });
+
+    inputs.current++;
+    if (inputs.current >= inputs.length) {
+        inputs.current = 0;
+    }
+}
diff --git a/changedetectionio/templates/diff.html b/changedetectionio/templates/diff.html
index 685179a1a..392d0d576 100644
--- a/changedetectionio/templates/diff.html
+++ b/changedetectionio/templates/diff.html
@@ -102,122 +102,12 @@
      </div>
 </div>
 
-
+<script>
+    const newest_version_timestamp = {{newest_version_timestamp}}
+</script>
 <script type="text/javascript" src="{{url_for('static_content', group='js', filename='diff.min.js')}}"></script>
 
-<script defer="">
-
-var a = document.getElementById('a');
-var b = document.getElementById('b');
-var result = document.getElementById('result');
-
-function changed() {
-	var diff = JsDiff[window.diffType](a.textContent, b.textContent);
-	var fragment = document.createDocumentFragment();
-	for (var i=0; i < diff.length; i++) {
-
-		if (diff[i].added && diff[i + 1] && diff[i + 1].removed) {
-			var swap = diff[i];
-			diff[i] = diff[i + 1];
-			diff[i + 1] = swap;
-		}
-
-		var node;
-		if (diff[i].removed) {
-			node = document.createElement('del');
-			node.classList.add("change");
-			node.appendChild(document.createTextNode(diff[i].value));
-
-		} else if (diff[i].added) {
-			node = document.createElement('ins');
-			node.classList.add("change");
-			node.appendChild(document.createTextNode(diff[i].value));
-		} else {
-			node = document.createTextNode(diff[i].value);
-		}
-		fragment.appendChild(node);
-	}
-
-	result.textContent = '';
-	result.appendChild(fragment);
-
-	// Jump at start
-	inputs.current=0;
-    next_diff();
-}
-
-window.onload = function() {
-
-
-    /* Convert what is options from UTC time.time() to local browser time */
-    var diffList=document.getElementById("diff-version");
-    if (typeof(diffList) != 'undefined' && diffList != null) {
-        for (var option of diffList.options) {
-          var dateObject = new Date(option.value*1000);
-          option.label=dateObject.toLocaleString();
-        }
-    }
-
-    /* Set current version date as local time in the browser also */
-    var current_v = document.getElementById("current-v-date");
-    var dateObject = new Date({{ newest_version_timestamp }}*1000);
-    current_v.innerHTML=dateObject.toLocaleString();
-
-
-	onDiffTypeChange(document.querySelector('#settings [name="diff_type"]:checked'));
-	changed();
-
-};
-
-a.onpaste = a.onchange =
-b.onpaste = b.onchange = changed;
-
-if ('oninput' in a) {
-	a.oninput = b.oninput = changed;
-} else {
-	a.onkeyup = b.onkeyup = changed;
-}
-
-function onDiffTypeChange(radio) {
-	window.diffType = radio.value;
-// Not necessary 
-//	document.title = "Diff " + radio.value.slice(4);
-}
-
-var radio = document.getElementsByName('diff_type');
-for (var i = 0; i < radio.length; i++) {
-	radio[i].onchange = function(e) {
-		onDiffTypeChange(e.target);
-		changed();
-	}
-}
-
-
-var inputs = document.getElementsByClassName('change');
-inputs.current=0;
-
-
-function next_diff() {
-
-    var element = inputs[inputs.current];
-    var headerOffset = 80;
-    var elementPosition = element.getBoundingClientRect().top;
-    var offsetPosition = elementPosition - headerOffset +  window.scrollY;
-
-    window.scrollTo({
-         top: offsetPosition,
-         behavior: "smooth"
-    });
-
-    inputs.current++;
-    if(inputs.current >= inputs.length) {
-      inputs.current=0;
-    }
-}
-
-
-
-</script>
+<script type="text/javascript" src="{{url_for('static_content', group='js', filename='diff-render.js')}}"></script>
 
 
 {% endblock %}
\ No newline at end of file