Add files via upload

app/utils/image.py

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+import asyncio
+import base64
+import io
+import logging
+
+from PIL import Image
+
+logger = logging.getLogger(__name__)
+
+# Image processing constants
+MAX_IMAGE_SIZE = 1024
+JPEG_QUALITY = 85
+
+
+def _process_image(image_path: str) -> str:
+    """
+    Synchronous image processing function to be run in an executor.
+    """
+    try:
+        with Image.open(image_path) as img:
+            # Resize if too large (e.g., max dimension 1024)
+            if max(img.size) > MAX_IMAGE_SIZE:
+                img.thumbnail((MAX_IMAGE_SIZE, MAX_IMAGE_SIZE))
+                logger.info(f"Resized image to {img.size}")
+
+            # Convert to RGB if necessary (e.g. for PNGs with alpha)
+            if img.mode in ("RGBA", "P"):
+                img_to_process = img.convert("RGB")
+            else:
+                img_to_process = img
+
+            buffered = io.BytesIO()
+            img_to_process.save(buffered, format="JPEG", quality=JPEG_QUALITY)
+            return base64.b64encode(buffered.getvalue()).decode("utf-8")
+    except Exception as e:
+        logger.error(f"Error encoding image: {e}")
+        raise
+
+
+async def encode_image(image_path: str) -> str:
+    """
+    Asynchronously encode image by running blocking code in a thread.
+    """
+    loop = asyncio.get_running_loop()
+    return await loop.run_in_executor(None, _process_image, image_path)