[APP-610] Make the language filter more lenient (#562)

* Tune the language filter to accept posts when a determination cant be made

* use j instead of i since i has been declared in upper scope

* use j instead of i since i has been declared in upper scope

* Pass the j man

---------

Co-authored-by: Ansh Nanda <anshnanda10@gmail.com>

src/lib/api/feed-manip.ts

@@ -203,11 +203,25 @@ export class FeedTuner {
             typeof item.post.record.text === 'string'
           ) {
             const res = lande(item.post.record.text)
-            const contentLangCode3 = res[0][0]
+
-            if (langsCode3.includes(contentLangCode3)) {
+            // require at least 70% confidence; otherwise, roll with it
+            if (res[0][1] <= 0.7) {
               hasPreferredLang = true
               break
             }
+
+            // if the user's languages are in the top 5 guesses, roll with it
+            for (let j = 0; j < 5 && j < res.length; j++) {
+              hasPreferredLang =
+                hasPreferredLang || langsCode3.includes(res[i][0])
+            }
+            if (hasPreferredLang) {
+              break
+            }
+          } else {
+            // no text? roll with it
+            hasPreferredLang = true
+            break
           }
         }
         if (!hasPreferredLang) {