Cleanup + fix issue where zerochan sometimes couldn't find the image

src/NeoScraper.ts

@@ -26,6 +26,7 @@ export default class NeoScraper {
 
         for (const engine of this.engines) {
             if (ignoreCanImport || engine.canImport(document.location)) {
+                console.log("Using engine: " + engine.name);
                 res.results.push(engine.scrapeDocument(document));
             }
         }
@@ -34,10 +35,13 @@ export default class NeoScraper {
             if (!this.fallbackEngine) {
                 console.error("NeoScraper.fallbackEngine is unset!");
             } else {
+                console.log("Using fallback engine");
                 res.results.push(this.fallbackEngine.scrapeDocument(document));
             }
         }
 
+        console.dir(res);
+
         return res;
     }
 }

src/ScrapeEngine.ts

@@ -25,6 +25,14 @@ export class ScrapeResult {
     constructor(engine: string) {
         this.engine = engine;
     }
+
+    tryAddPost(post: ScrapedPost) {
+        if (!post.imageUrl) {
+            console.log(`[${this.engine}] Not adding post because imageUrl is unset!`);
+        } else {
+            this.posts.push(post);
+        }
+    }
 }
 
 export class ScrapeResults {

src/engines/Danbooru.ts

@@ -78,9 +78,7 @@ export default class Danbooru implements ScrapeEngine {
             }
         }
 
-        if (post.imageUrl) {
-            result.posts.push(post);
-        }
+        result.tryAddPost(post);
 
         return result;
     }

src/engines/Gelbooru.ts

@@ -135,9 +135,7 @@ export default class Gelbooru implements ScrapeEngine {
             }
         }
 
-        if (post.imageUrl) {
-            result.posts.push(post);
-        }
+        result.tryAddPost(post);
 
         return result;
     }

src/engines/Moebooru.ts

@@ -88,10 +88,7 @@ export default class Moebooru implements ScrapeEngine {
             post.tags.push(tag);
         }
         
-        
-        if (post.imageUrl) {
-            result.posts.push(post);
-        }
+        result.tryAddPost(post);
 
         return result;
     }

src/engines/Reddit.ts

@@ -25,9 +25,7 @@ export default class Reddit implements ScrapeEngine {
             post.imageUrl = (newLinkElements[0] as HTMLAnchorElement).href;
         }
 
-        if (post.imageUrl) {
-            result.posts.push(post);
-        }
+        result.tryAddPost(post);
 
         return result;
     }

src/engines/SankakuComplex.ts

@@ -74,9 +74,7 @@ export default class SankakuComplex implements ScrapeEngine {
             }
         }
 
-        if (post.imageUrl) {
-            result.posts.push(post);
-        }
+        result.tryAddPost(post);
 
         return result;
     }

src/engines/Shimmie2.ts

@@ -41,9 +41,7 @@ export default class Shimmie2 implements ScrapeEngine {
             .map(x => (x as HTMLAnchorElement).innerText.toLowerCase())
             .map(x => new ScrapedTag(x));
 
-        if (post.imageUrl) {
-            result.posts.push(post);
-        }
+        result.tryAddPost(post);
 
         return result;
     }

src/engines/Twitter.ts

@@ -33,9 +33,7 @@ export default class Twitter implements ScrapeEngine {
             post.imageUrl = getOriginalImageUrl((mediaImageElements[0] as HTMLImageElement).src);
         }
 
-        if (post.imageUrl) {
-            result.posts.push(post);
-        }
+        result.tryAddPost(post);
 
         return result;
     }

src/engines/Zerochan.ts

@@ -16,7 +16,14 @@ export default class Zerochan implements ScrapeEngine {
         // Set image url
         const previewElements = document.getElementsByClassName("preview");
         if (previewElements.length > 0) {
+            // The preview element only exists when there is a larger size available. Preview's img element contains a downscaled version.
             post.imageUrl = (previewElements[0] as HTMLAnchorElement).href;
+        } else {
+            // When there is no larger version available just use the displayed version.
+            const imgElement = document.querySelector("img[title='No larger size available']") as HTMLImageElement;
+            if (imgElement) {
+                post.imageUrl = imgElement.src;
+            }
         }
 
         // Set rating
@@ -59,9 +66,7 @@ export default class Zerochan implements ScrapeEngine {
             }
         }
 
-        if (post.imageUrl) {
-            result.posts.push(post);
-        }
+        result.tryAddPost(post);
 
         return result;
     }