[DONE] Check extesion allowed video filename (#1033)

* Check extesion allowed video filename

* Update add_video.html

Remove jquery part

pod/video/templates/videos/add_video.html

@@ -160,13 +160,31 @@ <h2 class="card-header card-title pod-card__title h4">{% trans "Help for form fi
     maxFileSize: 1,
     formData: form_data,
     add: function (e, data) { // Called before starting upload
-      // If this is the second file you're uploading we need to remove the
-      // old upload_id and just keep the csrftoken (which is always first).
-      $(".hide-on-processing").hide();
-      $(".show-on-processing").show();
-      form_data.splice(1);
-      calculate_md5(data.files[0], max_chunk_size);  // Again, chunks of 100 kB
-      data.submit();
+	    // If this is the second file you're uploading we need to remove the
+	    // old upload_id and just keep the csrftoken (which is always first).
+	    var allow_extension_array = this.accept.replaceAll(' ', '').split(",");
+	    var extension = data.originalFiles[0].name.substr((data.originalFiles[0].name.lastIndexOf('.') +1)).toLowerCase();
+	    if (allow_extension_array.includes("."+extension) == false) {
+		    showalert(
+			    gettext("The file extension not in the allowed extension:") +
+			    "<br/>" +
+			    this.accept ,
+			    "alert-danger",
+		    );
+	    }
+	    else {
+		    var elementsHideProcessing = document.getElementsByClassName("hide-on-processing");
+		    for (let i = 0; i < elementsHideProcessing.length; i++) {
+			    elementsHideProcessing[i].classList.add('d-none');
+		    }
+		    var elementsShowProcessing = document.getElementsByClassName("show-on-processing");
+		    for (let i = 0; i < elementsShowProcessing.length; i++) {
+			    elementsShowProcessing[i].style.display = 'block';
+		    }
+		    form_data.splice(1);
+		    calculate_md5(data.files[0], max_chunk_size);  // Again, chunks of 100 kB
+		    data.submit();
+	    }
     },
     chunkdone: function (e, data) { // Called after uploading each chunk
       $(this).is(':checked')