getCoreContentText for any websites using mozilla/readability (#641)

* getCoreContentText for any websites using https://github.com/mozilla/readability

* improve use of @mozilla/readability

---------

Co-authored-by: josc146 <josStorer@outlook.com>

src/utils/get-core-content-text.mjs

@@ -1,9 +1,5 @@
 import { getPossibleElementByQuerySelector } from './get-possible-element-by-query-selector.mjs'
-
-function getArea(e) {
-  const rect = e.getBoundingClientRect()
-  return rect.width * rect.height
-}
+import { Readability, isProbablyReaderable } from '@mozilla/readability'
 
 const adapters = {
   'scholar.google': ['#gs_res_ccl_mid'],
@@ -17,6 +13,11 @@ const adapters = {
   'new.qq.com': ['.content-article'],
 }
 
+function getArea(e) {
+  const rect = e.getBoundingClientRect()
+  return rect.width * rect.height
+}
+
 function findLargestElement(e) {
   if (!e) {
     return null
@@ -42,22 +43,39 @@ function findLargestElement(e) {
   return largestElement
 }
 
-export function getCoreContentText() {
-  function getTextFrom(e) {
-    return e.innerText || e.textContent
-  }
+function getTextFrom(e) {
+  return e.innerText || e.textContent
+}
 
+function postProcessText(text) {
+  return text
+    .trim()
+    .replaceAll('  ', '')
+    .replaceAll('\t', '')
+    .replaceAll('\n\n', '')
+    .replaceAll(',,', '')
+}
+
+export function getCoreContentText() {
   for (const [siteName, selectors] of Object.entries(adapters)) {
     if (location.hostname.includes(siteName)) {
       const element = getPossibleElementByQuerySelector(selectors)
-      if (element) return getTextFrom(element)
+      if (element) return postProcessText(getTextFrom(element))
       break
     }
   }
 
   const element = document.querySelector('article')
   if (element) {
-    return getTextFrom(element)
+    return postProcessText(getTextFrom(element))
+  }
+
+  if (isProbablyReaderable(document)) {
+    let article = new Readability(document.cloneNode(true), {
+      keepClasses: true,
+    }).parse()
+    console.log('readerable')
+    return postProcessText(article.textContent)
   }
 
   const largestElement = findLargestElement(document.body)
@@ -79,5 +97,5 @@ export function getCoreContentText() {
     ret = getTextFrom(largestElement)
     console.log('use first')
   }
-  return ret.trim().replaceAll('  ', '').replaceAll('\n\n', '').replaceAll(',,', '')
+  return postProcessText(ret)
 }