refactored JS

changedetectionio/content_fetchers/res/stock-not-in-stock.js

@@ -60,15 +60,19 @@ function isItemInStock() {
         'tickets unavailable',
         'tijdelijk uitverkocht',
         'unavailable tickets',
+        'vorbestellung ist bald möglich',
         'we do not currently have an estimate of when this product will be back in stock.',
         'we don\'t know when or if this item will be back in stock.',
         'zur zeit nicht an lager',
         '品切れ',
         '已售完',
+        '已售',
         '품절'
     ];
 
+
     const vh = Math.max(document.documentElement.clientHeight || 0, window.innerHeight || 0);
+
     function getElementBaseText(element) {
         // .textContent can include text from children which may give the wrong results
         // scan only immediate TEXT_NODEs, which will be a child of the element
@@ -79,29 +83,69 @@ function isItemInStock() {
         return text.toLowerCase().trim();
     }
 
-    const negateOutOfStockRegex = new RegExp('([0-9] in stock|add to cart)', 'ig');
+    const negateOutOfStockRegex = new RegExp('^([0-9] in stock|add to cart|in stock)', 'ig');
 
     // The out-of-stock or in-stock-text is generally always above-the-fold
     // and often below-the-fold is a list of related products that may or may not contain trigger text
     // so it's good to filter to just the 'above the fold' elements
     // and it should be atleast 100px from the top to ignore items in the toolbar, sometimes menu items like "Coming soon" exist
-    const elementsToScan = Array.from(document.getElementsByTagName('*')).filter(element => element.getBoundingClientRect().top + window.scrollY <= vh && element.getBoundingClientRect().top + window.scrollY >= 100);
+
+
+// @todo - if it's SVG or IMG, go into image diff mode
+// %ELEMENTS% replaced at injection time because different interfaces use it with different settings
+
+    console.log("Scanning %ELEMENTS%");
+
+    function collectVisibleElements(parent, visibleElements) {
+        if (!parent) return; // Base case: if parent is null or undefined, return
+
+        // Add the parent itself to the visible elements array if it's of the specified types
+        visibleElements.push(parent);
+
+        // Iterate over the parent's children
+        const children = parent.children;
+        for (let i = 0; i < children.length; i++) {
+            const child = children[i];
+            if (
+                child.nodeType === Node.ELEMENT_NODE &&
+                window.getComputedStyle(child).display !== 'none' &&
+                window.getComputedStyle(child).visibility !== 'hidden' &&
+                child.offsetWidth >= 0 &&
+                child.offsetHeight >= 0 &&
+                window.getComputedStyle(child).contentVisibility !== 'hidden'
+            ) {
+                // If the child is an element and is visible, recursively collect visible elements
+                collectVisibleElements(child, visibleElements);
+            }
+        }
+    }
+
+    const elementsToScan = [];
+    collectVisibleElements(document.body, elementsToScan);
 
     var elementText = "";
 
     // REGEXS THAT REALLY MEAN IT'S IN STOCK
     for (let i = elementsToScan.length - 1; i >= 0; i--) {
         const element = elementsToScan[i];
+
+        // outside the 'fold' or some weird text in the heading area
+        // .getBoundingClientRect() was causing a crash in chrome 119, can only be run on contentVisibility != hidden
+        if (element.getBoundingClientRect().top + window.scrollY >= vh || element.getBoundingClientRect().top + window.scrollY <= 100) {
+            continue
+        }
+
         elementText = "";
         if (element.tagName.toLowerCase() === "input") {
-            elementText = element.value.toLowerCase();
+            elementText = element.value.toLowerCase().trim();
         } else {
             elementText = getElementBaseText(element);
         }
 
         if (elementText.length) {
             // try which ones could mean its in stock
-            if (negateOutOfStockRegex.test(elementText)) {
+            if (negateOutOfStockRegex.test(elementText) && !elementText.includes('(0 products)')) {
+                console.log(`Negating/overriding 'Out of Stock' back to "Possibly in stock" found "${elementText}"`)
                 return 'Possibly in stock';
             }
         }
@@ -110,10 +154,14 @@ function isItemInStock() {
     // OTHER STUFF THAT COULD BE THAT IT'S OUT OF STOCK
     for (let i = elementsToScan.length - 1; i >= 0; i--) {
         const element = elementsToScan[i];
-        if (element.offsetWidth > 0 || element.offsetHeight > 0 || element.getClientRects().length > 0) {
+        // outside the 'fold' or some weird text in the heading area
+        // .getBoundingClientRect() was causing a crash in chrome 119, can only be run on contentVisibility != hidden
+        if (element.getBoundingClientRect().top + window.scrollY >= vh + 150 || element.getBoundingClientRect().top + window.scrollY <= 100) {
+            continue
+        }
         elementText = "";
         if (element.tagName.toLowerCase() === "input") {
-                elementText = element.value.toLowerCase();
+            elementText = element.value.toLowerCase().trim();
         } else {
             elementText = getElementBaseText(element);
         }
@@ -122,16 +170,18 @@ function isItemInStock() {
             // and these mean its out of stock
             for (const outOfStockText of outOfStockTexts) {
                 if (elementText.includes(outOfStockText)) {
+                    console.log(`Selected 'Out of Stock' - found text "${outOfStockText}" - "${elementText}"`)
                     return outOfStockText; // item is out of stock
                 }
             }
         }
     }
-    }
 
+    console.log(`Returning 'Possibly in stock' - cant' find any useful matching text`)
     return 'Possibly in stock'; // possibly in stock, cant decide otherwise.
 }
 
 // returns the element text that makes it think it's out of stock
 return isItemInStock().trim()
 
+

changedetectionio/content_fetchers/res/xpath_element_scraper.js

@@ -16,7 +16,6 @@ try {
 }
 
 
-
 // Include the getXpath script directly, easier than fetching
 function getxpath(e) {
     var n = e;
@@ -59,14 +58,14 @@ const findUpTag = (el) => {
 
     // Strategy 2: Keep going up until we hit an ID tag, imagine it's like  #list-widget div h4
     while (r.parentNode) {
-        if (depth == 5) {
+        if (depth === 5) {
             break;
         }
         if ('' !== r.id) {
             chained_css.unshift("#" + CSS.escape(r.id));
             final_selector = chained_css.join(' > ');
             // Be sure theres only one, some sites have multiples of the same ID tag :-(
-            if (window.document.querySelectorAll(final_selector).length == 1) {
+            if (window.document.querySelectorAll(final_selector).length === 1) {
                 return final_selector;
             }
             return null;
@@ -82,30 +81,60 @@ const findUpTag = (el) => {
 
 // @todo - if it's SVG or IMG, go into image diff mode
 // %ELEMENTS% replaced at injection time because different interfaces use it with different settings
-var elements = window.document.querySelectorAll("%ELEMENTS%");
+
 var size_pos = [];
 // after page fetch, inject this JS
 // build a map of all elements and their positions (maybe that only include text?)
 var bbox;
-for (var i = 0; i < elements.length; i++) {
-    bbox = elements[i].getBoundingClientRect();
+console.log("Scanning %ELEMENTS%");
+
+function collectVisibleElements(parent, visibleElements) {
+    if (!parent) return; // Base case: if parent is null or undefined, return
+
+
+    // Add the parent itself to the visible elements array if it's of the specified types
+    const tagName = parent.tagName.toLowerCase();
+    if ("%ELEMENTS%".split(',').includes(tagName)) {
+        visibleElements.push(parent);
+    }
 
-    // Exclude items that are not interactable or visible
-    if(elements[i].style.opacity === "0") {
-        continue
+    // Iterate over the parent's children
+    const children = parent.children;
+    for (let i = 0; i < children.length; i++) {
+        const child = children[i];
+        if (
+            child.nodeType === Node.ELEMENT_NODE &&
+            window.getComputedStyle(child).display !== 'none' &&
+            window.getComputedStyle(child).visibility !== 'hidden' &&
+            child.offsetWidth >= 0 &&
+            child.offsetHeight >= 0 &&
+            window.getComputedStyle(child).contentVisibility !== 'hidden'
+        ) {
+            // If the child is an element and is visible, recursively collect visible elements
+            collectVisibleElements(child, visibleElements);
         }
-    if(elements[i].style.display === "none" || elements[i].style.pointerEvents === "none" ) {
-        continue
     }
+}
+
+// Create an array to hold the visible elements
+const visibleElementsArray = [];
+
+// Call collectVisibleElements with the starting parent element
+collectVisibleElements(document.body, visibleElementsArray);
+
+
+visibleElementsArray.forEach(function (element) {
+
+    bbox = element.getBoundingClientRect();
 
     // Skip really small ones, and where width or height ==0
-    if (bbox['width'] * bbox['height'] < 100) {
-        continue;
+    if (bbox['width'] * bbox['height'] < 10) {
+        return
     }
 
     // Don't include elements that are offset from canvas
     if (bbox['top'] + scroll_y < 0 || bbox['left'] < 0) {
-        continue;
+        return
     }
 
     // @todo the getXpath kind of sucks, it doesnt know when there is for example just one ID sometimes
@@ -114,46 +143,41 @@ for (var i = 0; i < elements.length; i++) {
 
     // 1st primitive - if it has class, try joining it all and select, if theres only one.. well thats us.
     xpath_result = false;
-
     try {
-        var d = findUpTag(elements[i]);
+        var d = findUpTag(element);
         if (d) {
             xpath_result = d;
         }
     } catch (e) {
         console.log(e);
     }
-
     // You could swap it and default to getXpath and then try the smarter one
     // default back to the less intelligent one
     if (!xpath_result) {
         try {
             // I've seen on FB and eBay that this doesnt work
             // ReferenceError: getXPath is not defined at eval (eval at evaluate (:152:29), <anonymous>:67:20) at UtilityScript.evaluate (<anonymous>:159:18) at UtilityScript.<anonymous> (<anonymous>:1:44)
-            xpath_result = getxpath(elements[i]);
+            xpath_result = getxpath(element);
         } catch (e) {
             console.log(e);
-            continue;
+            return
         }
     }
 
-    if (window.getComputedStyle(elements[i]).visibility === "hidden") {
-        continue;
-    }
 
-    // @todo Possible to ONLY list where it's clickable to save JSON xfer size
     size_pos.push({
         xpath: xpath_result,
         width: Math.round(bbox['width']),
         height: Math.round(bbox['height']),
         left: Math.floor(bbox['left']),
         top: Math.floor(bbox['top']) + scroll_y,
-        tagName: (elements[i].tagName) ? elements[i].tagName.toLowerCase() : '',
-        tagtype: (elements[i].tagName == 'INPUT' && elements[i].type) ? elements[i].type.toLowerCase() : '',
-        isClickable: (elements[i].onclick) || window.getComputedStyle(elements[i]).cursor == "pointer"
+        tagName: (element.tagName) ? element.tagName.toLowerCase() : '',
+        tagtype: (element.tagName.toLowerCase() === 'input' && element.type) ? element.type.toLowerCase() : '',
+        isClickable: window.getComputedStyle(element).cursor == "pointer"
+    });
+
 });
 
-}
 
 // Inject the current one set in the include_filters, which may be a CSS rule
 // used for displaying the current one in VisualSelector, where its not one we generated.