Add output file count validation (#97)

* Worker file_list ignores hidden files

* Add frame-count validation logic

src/engines/core/base_worker.py

@@ -238,7 +238,12 @@ class BaseRenderWorker(Base):
         DistributedJobManager.wait_for_subjobs(parent_job=self)
 
     @staticmethod
-    def log_and_print(message, log_file):
+    def log_and_print(message, log_file, level='info'):
+        if level == 'debug':
+            logger.debug(message)
+        elif level == 'error':
+            logger.error(message)
+        else:
             logger.info(message)
         log_file.write(f"{message}\n")
 
@@ -259,26 +264,35 @@ class BaseRenderWorker(Base):
             else:
                 self.__run__wait_for_subjobs(log_file)
 
+            # Validate Output - End if missing frames
+            if self.status == RenderStatus.RUNNING:
+                file_list_length = len(self.file_list())
+                expected_list_length = (self.end_frame - self.start_frame + 1) if self.end_frame else 1
+
+                msg = f"Frames: Expected ({expected_list_length}) vs actual ({file_list_length}) for {self}"
+                self.log_and_print(msg, log_file, 'debug')
+
+                if file_list_length not in (expected_list_length, 1):
+                    msg = f"Missing frames: Expected ({expected_list_length}) vs actual ({file_list_length})"
+                    self.log_and_print(msg, log_file, 'error')
+                    self.errors.append(msg)
+                    self.status = RenderStatus.ERROR
+                    # todo: create new subjob to generate missing frames
+
+            # cleanup and close if cancelled / error
             if self.status in [RenderStatus.CANCELLED, RenderStatus.ERROR]:
                 self.end_time = datetime.now()
-                message = f"{self.engine.name()} render ended with status '{self.status}' " \
+                message = f"{self.engine.name()} render ended with status '{self.status.value}' " \
                           f"after {self.time_elapsed()}"
                 self.log_and_print(message, log_file)
                 return
 
-            # Validate Output
-            file_list_length = len(self.file_list())
-            expected_list_length = (self.end_frame - self.start_frame + 1) if self.end_frame else 1
-
-            if file_list_length not in (expected_list_length, 1):
-                logger.error(f"Expected length: {expected_list_length} | actual length: {len(self.file_list())}")
-                # todo: create new subjob
-
             # Post Render Work
             if not self.parent:
                 logger.debug(f"Starting post-processing work for {self}")
+                self.log_and_print(f"Starting post-processing work for {self}", log_file, 'debug')
                 self.post_processing()
-                logger.debug(f"Completed post-processing work for {self}")
+                self.log_and_print(f"Completed post-processing work for {self}", log_file, 'debug')
 
             self.status = RenderStatus.COMPLETED
             self.end_time = datetime.now()
@@ -389,7 +403,11 @@ class BaseRenderWorker(Base):
     def file_list(self):
         try:
             job_dir = os.path.dirname(self.output_path)
-            file_list = [os.path.join(job_dir, file) for file in os.listdir(job_dir)]
+            file_list = [
+                os.path.join(job_dir, file)
+                for file in os.listdir(job_dir)
+                if not file.startswith('.')  # Ignore hidden files
+            ]
             file_list.sort()
             return file_list
         except FileNotFoundError: