added FurAffinity scraper

src/NeoScraper.ts

@@ -20,7 +20,8 @@ export default class NeoScraper {
         new engines.Shimmie2(),
         new engines.Shuushuu(),
         new engines.Twitter(),
-        new engines.Zerochan()
+        new engines.Zerochan(),
+        new engines.FurAffinity()
       );
       this.fallbackEngine = new engines.Fallback();
     }

src/engines/FurAffinity.ts

@@ -0,0 +1,59 @@
+import { ScrapeEngine, ScrapeResult, ScrapedPost, ScrapedTag } from "../ScrapeEngine";
+import { guessContentType } from "../Utility";
+
+export default class e621 implements ScrapeEngine {
+  name = "FurAffinity";
+
+  canImport(url: Location): boolean {
+    return url.host == 'www.furaffinity.net';
+  }
+
+  scrapeDocument(document: Document): ScrapeResult {
+    let result = new ScrapeResult(this.name);
+
+    let post = new ScrapedPost();
+    post.pageUrl = document.location.href;
+
+    // Set image url
+    const downloadEl = document.querySelector("#submissionImg") as HTMLImageElement;
+    post.contentUrl = downloadEl?.src;
+
+    if (post.contentUrl == undefined) {
+      return result;
+    }
+
+    // Set content type
+    post.contentType = guessContentType(post.contentUrl);
+
+    // Set rating
+    // TODO: not so sure about this? maybe there is a more elegant solution
+    const ratingEl = document.querySelectorAll("div.rating > span.font-large.rating-box.inline")[0] as HTMLSpanElement;
+    switch (ratingEl?.innerText) {
+      case "General":
+        post.rating = "safe";
+        break;
+      case "Mature":
+        post.rating = "sketchy";
+        break;
+      case "Adult":
+        post.rating = "unsafe";
+        break;
+    }
+
+    // Set tags
+    // Shimmie2 doesn't support categories so we don't need to worry about those.
+    // They also use uppercase tags, so we toLowerCase() those.
+    // Tags might not match with other booru-likes, but that is for the user to figure out.
+    // For example by deleting 'wrong' tags or setting up some aliases in szurubooru.
+    post.tags = Array.from(document.querySelectorAll("section.tags-row > span.tags"))
+      .map((x) => (x as HTMLSpanElement).innerText)
+      .map((x) => new ScrapedTag(x));
+
+    // Set source
+    post.source = document.location.href;
+
+    result.tryAddPost(post);
+
+    return result;
+  }
+}

src/engines/index.ts

@@ -12,3 +12,4 @@ export { default as Shimmie2 } from "./Shimmie2";
 export { default as Shuushuu } from "./Shuushuu";
 export { default as Twitter } from "./Twitter";
 export { default as Zerochan } from "./Zerochan";
+export { default as FurAffinity } from "./FurAffinity";