Update PixelDrainExtractor.kt (#1342)

Enhancement for Pixeldrain Links

library/src/commonMain/kotlin/com/lagradost/cloudstream3/extractors/PixelDrainExtractor.kt

@@ -11,15 +11,29 @@ open class PixelDrain : ExtractorApi() {
     override val requiresReferer = true
 
     override suspend fun getUrl(url: String, referer: String?, subtitleCallback: (SubtitleFile) -> Unit, callback: (ExtractorLink) -> Unit) {
-        val mId = Regex("/([ul]/[\\da-zA-Z\\-]+)(?:\\?download)?").find(url)?.groupValues?.get(1)?.split("/")
-        callback.invoke(
-            ExtractorLink(
-                this.name,
-                this.name,
-                "$mainUrl/api/file/${mId?.last() ?: return}?download",
-                url,
-                Qualities.Unknown.value,
+        val mId = Regex("/u/(.*)").find(url)?.groupValues?.get(1)
+        if (mId.isNullOrEmpty())
+        {
+            callback.invoke(
+                ExtractorLink(
+                    this.name,
+                    this.name,
+                    url,
+                    url,
+                    Qualities.Unknown.value,
+                )
             )
-        )
+        }
+        else {
+            callback.invoke(
+                ExtractorLink(
+                    this.name,
+                    this.name,
+                    "$mainUrl/api/file/${mId}?download",
+                    url,
+                    Qualities.Unknown.value,
+                )
+            )
+        }
     }
-}
+}