df added url prefix

extra validation to url and image prefix to not be already en in their respectives urls

src/portales/df/handler.ts

@@ -11,6 +11,7 @@ export const handler: Handler = new Portal(
   config.MASTODON_KEY_DF,
   {
     url: config.DF,
+    linkPrefix: "https://www.df.cl",
     articlesSelector: "article",
     titleSelector: "h3 a",
     linkSelector: "h3 a",

src/utils/scraper-articles.ts

@@ -49,7 +49,9 @@ export default class ScraperArticles {
   private getLink (article: AnyNode): string {
     const selector = this._options.linkSelector ?? "";
     const url = selector !== "" ? this.getProperty(article, selector, Props.LINK) : this._options.url
-    return this._options.linkPrefix !== undefined ? (this._options.linkPrefix + url).trim() : url.trim();
+    return this._options.linkPrefix !== undefined && url.includes(this._options.linkPrefix)
+     ? (this._options.linkPrefix + url).trim() 
+     : url.trim();
   }
 
   private async getImage (article: AnyNode): Promise<File | null> {
@@ -58,7 +60,7 @@ export default class ScraperArticles {
     let imgUrl = selector !== "" ? this.getProperty(article, selector, Props.IMAGE) : "";
 
     if (imgUrl !== "") {
-      if (this._options.imagePrefix) {
+      if (this._options.imagePrefix && imgUrl.includes(this._options.imagePrefix)) {
         imgUrl = this._options.imagePrefix + imgUrl;
       }
       imgFile = this._scraper.scrapeFile(imgUrl)