Major file reorganization (#26)

* Major file reorganization

* Rearrange imports

* Fix default log level

src/utilities/server_helper.py

@@ -0,0 +1,47 @@
+import logging
+import os
+import subprocess
+import threading
+
+from src.utilities.ffmpeg_helper import generate_thumbnail, save_first_frame
+
+logger = logging.getLogger()
+
+
+def generate_thumbnail_for_job(job, thumb_video_path, thumb_image_path, max_width=320):
+
+    # Simple thread to generate thumbs in background
+    def generate_thumb_thread(source):
+        in_progress_path = thumb_video_path + '_IN-PROGRESS'
+        subprocess.run(['touch', in_progress_path])
+        try:
+            logger.debug(f"Generating video thumbnail for {source}")
+            generate_thumbnail(source_path=source, dest_path=thumb_video_path, max_width=max_width)
+        except subprocess.CalledProcessError as err:
+            logger.error(f"Error generating video thumbnail for {source}: {err}")
+
+        try:
+            os.remove(in_progress_path)
+        except FileNotFoundError:
+            pass
+
+    # Determine best source file to use for thumbs
+    source_files = job.file_list() or [job.input_path]
+    if source_files:
+        video_formats = ['.mp4', '.mov', '.avi', '.mpg', '.mpeg', '.mxf', '.m4v', 'mkv']
+        image_formats = ['.jpg', '.png', '.exr']
+
+        image_files = [f for f in source_files if os.path.splitext(f)[-1].lower() in image_formats]
+        video_files = [f for f in source_files if os.path.splitext(f)[-1].lower() in video_formats]
+
+        if (video_files or image_files) and not os.path.exists(thumb_image_path):
+            try:
+                path_of_source = image_files[0] if image_files else video_files[0]
+                logger.debug(f"Generating image thumbnail for {path_of_source}")
+                save_first_frame(source_path=path_of_source, dest_path=thumb_image_path, max_width=max_width)
+            except Exception as e:
+                logger.error(f"Exception saving first frame: {e}")
+
+        if video_files and not os.path.exists(thumb_video_path):
+            x = threading.Thread(target=generate_thumb_thread, args=(video_files[0],))
+            x.start()