From 1c3b6a401276be2c97251c4b48b3c123891e3dfe Mon Sep 17 00:00:00 2001
From: dteviot <dteviot@gmail.com>
Date: Wed, 24 Jan 2024 20:36:03 +1300
Subject: [PATCH] Remove theft message from RoyalRoad

See: https://github.com/dteviot/WebToEpub/issues/1177
---
 plugin/js/parsers/RoyalRoadParser.js | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/plugin/js/parsers/RoyalRoadParser.js b/plugin/js/parsers/RoyalRoadParser.js
index d528e28b..405e3258 100644
--- a/plugin/js/parsers/RoyalRoadParser.js
+++ b/plugin/js/parsers/RoyalRoadParser.js
@@ -37,6 +37,26 @@ class RoyalRoadParser extends Parser{
         document.getElementById("removeAuthorNotesRow").hidden = false; 
     }
 
+    preprocessRawDom(webPageDom) { 
+        this.removeWatermarks(webPageDom);
+    }
+
+    //watermarks are regular <p> elements set to "display: none" by internal css
+    removeWatermarks(webPageDom) {
+        let internalStyles = [...webPageDom.querySelectorAll("style")]
+            .map(style => style.sheet?.rules);
+        let allCssRules = [];
+        for(let ruleList of internalStyles) {
+            for(let rule of ruleList) {
+                allCssRules.push(rule);
+            }
+        }
+        for(let rule of allCssRules.filter(s => s.style.display == "none")) {
+            console.log(webPageDom.querySelector(rule.selectorText).textContent);
+            webPageDom.querySelector(rule.selectorText)?.remove();
+        }        
+    }
+
     removeUnwantedElementsFromContentElement(content) {
         // only keep the <div class="chapter-inner" elements of content
         for(let i = content.childElementCount - 1; 0 <= i; --i) {