Fix incorrect use of substr and add random id for song

Controller/LaguController.php

@@ -270,11 +270,12 @@ class LaguController
         $target_dir = "audio/";
         $file = $formData["file_lagu"]["name"];
 
-        if( substr($formData["file_lagu"]['type'], 5) !== 'audio'){
+        if( substr($formData["file_lagu"]['type'], 0, 5) !== "audio"){
           return $res->view("Pages/AddSong", [
               "auth" => $req->auth,
               "added" => false,
               "failed" => true,
+              "tipe" => substr($formData["file_lagu"]['type'], 5)
           ]);
         }
 
@@ -296,11 +297,12 @@ class LaguController
         $target_dir = "image/";
         $file = $formData["image_file"]["name"];
 
-        if( substr($formData["image_file"]['type'], 5) !== 'image'){
+        if( substr($formData["image_file"]['type'], 0, 5) !== "image"){
           return $res->view("Pages/AddSong", [
               "auth" => $req->auth,
               "added" => false,
               "failed" => true,
+              "tipe" => $formData["image_file"]['type']
           ]);
         }
 
@@ -319,6 +321,7 @@ class LaguController
         try {
             $transaction->insert(
                 [
+                    "song_id" => rand(1,9223372036854775807),
                     "title" => $title,
                     "release_date" => $release_date,
                     "duration" => $duration,