feat: add _auto_save_photo_from_extraction helper with graceful fallbacks

This commit is contained in:
2026-04-21 18:56:17 +03:00
parent e368574fba
commit eca1ab7fd0
2 changed files with 736 additions and 0 deletions

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@@ -423,3 +423,216 @@ async def upload_photo(
status_code=500,
detail=f"Internal server error: {str(e)}"
)
def _auto_save_photo_from_extraction(
item_id: int,
image_bytes: bytes,
crop_bounds: Optional[Dict[str, int]],
rotation_degrees: Optional[float],
db: Session
) -> Dict[str, str]:
"""
Helper function to save extracted photos with AI-guided crop/rotation.
This function is called after item creation if image_processing metadata exists.
It gracefully handles missing/invalid data without throwing exceptions.
Args:
item_id: ID of the item to attach the photo to
image_bytes: Raw photo bytes
crop_bounds: Optional crop bounds dict {x, y, width, height} (in pixels)
rotation_degrees: Optional rotation in degrees (-360 to +360, clockwise)
db: SQLAlchemy session
Returns:
{status: "ok"} if photo saved successfully
{status: "skipped", reason: "..."} if data invalid or missing
Behavior:
- Validates crop_bounds (all keys present, all ints >= 0)
- Validates rotation_degrees (numeric, -360 to +360)
- Skips gracefully if crop_bounds is None (no exceptions)
- Skips gracefully on invalid data (logs warning, returns skipped)
- Updates item.photo_path, photo_thumbnail_path, photo_upload_date
- Never throws exceptions
"""
from ..logger import log
try:
# Validate item exists
db_item = db.query(models.Item).filter(models.Item.id == item_id).first()
if not db_item:
log.warning(f"Auto-save photo: Item {item_id} not found, skipping")
return {
"status": "skipped",
"reason": f"Item {item_id} not found"
}
# Validate image_bytes
if not image_bytes or len(image_bytes) == 0:
log.warning(f"Auto-save photo for item {item_id}: No image bytes provided")
return {
"status": "skipped",
"reason": "Empty image bytes"
}
# Graceful skip if crop_bounds is None
if crop_bounds is None:
log.info(f"Auto-save photo for item {item_id}: crop_bounds is None, skipping")
return {
"status": "skipped",
"reason": "crop_bounds is None"
}
# Validate crop_bounds
if not isinstance(crop_bounds, dict):
log.warning(f"Auto-save photo for item {item_id}: crop_bounds is not a dict, skipping")
return {
"status": "skipped",
"reason": "crop_bounds must be a dict"
}
# Check for required keys
required_keys = {'x', 'y', 'width', 'height'}
if not required_keys.issubset(crop_bounds.keys()):
missing = required_keys - set(crop_bounds.keys())
log.warning(f"Auto-save photo for item {item_id}: Missing crop_bounds keys: {missing}")
return {
"status": "skipped",
"reason": f"Missing crop_bounds keys: {missing}"
}
# Validate all values are integers >= 0
try:
crop_bounds_validated = {}
for key in required_keys:
val = crop_bounds[key]
# Convert to int if it's numeric
if isinstance(val, (int, float)):
int_val = int(val)
else:
raise ValueError(f"Non-numeric value for {key}: {val}")
if int_val < 0:
raise ValueError(f"Negative value for {key}: {int_val}")
crop_bounds_validated[key] = int_val
except (ValueError, TypeError) as e:
log.warning(f"Auto-save photo for item {item_id}: Invalid crop_bounds: {str(e)}")
return {
"status": "skipped",
"reason": f"Invalid crop_bounds: {str(e)}"
}
# Validate rotation_degrees (optional but if provided, must be valid)
if rotation_degrees is not None:
try:
rot = float(rotation_degrees)
if rot < -360 or rot > 360:
log.warning(f"Auto-save photo for item {item_id}: rotation_degrees {rot} out of range [-360, 360]")
return {
"status": "skipped",
"reason": f"rotation_degrees {rot} out of range [-360, 360]"
}
except (ValueError, TypeError) as e:
log.warning(f"Auto-save photo for item {item_id}: Invalid rotation_degrees: {str(e)}")
return {
"status": "skipped",
"reason": f"Invalid rotation_degrees: {str(e)}"
}
# All validation passed, proceed with processing
try:
# Process image (crop + rotation + compression + thumbnail)
processor = ImageProcessor()
process_result = processor.process_photo(image_bytes, crop_bounds_validated)
if process_result.get('status') != 'success':
error_msg = process_result.get('error', 'Unknown error')
log.warning(f"Auto-save photo for item {item_id}: Image processing failed: {error_msg}")
return {
"status": "skipped",
"reason": f"Image processing failed: {error_msg}"
}
# Get processed bytes
cropped_bytes = process_result.get('cropped_image_bytes')
thumbnail_bytes = process_result.get('thumbnail_bytes')
if not cropped_bytes or not thumbnail_bytes:
log.warning(f"Auto-save photo for item {item_id}: No image data from processing")
return {
"status": "skipped",
"reason": "No image data from processing"
}
# Get category for file storage
category = db_item.category or "items"
# Get unique filenames
existing_files = []
cat_dir = Path("images") / category.lower()
if cat_dir.exists():
existing_files = [f.name for f in cat_dir.iterdir() if f.is_file()]
filename_base = db_item.name or f"item_{item_id}"
original_filename = get_unique_filename(filename_base, category, existing_files, variant="original")
thumbnail_filename = get_unique_filename(filename_base, category, existing_files, variant="thumb")
# Save original image
try:
original_path = save_image(cropped_bytes, category, original_filename.replace("_original.jpg", ""), variant="original")
except (OSError, IOError) as e:
log.warning(f"Auto-save photo for item {item_id}: Failed to save image: {str(e)}")
return {
"status": "skipped",
"reason": f"Failed to save image: {str(e)}"
}
# Save thumbnail
try:
thumbnail_path = save_image(thumbnail_bytes, category, thumbnail_filename.replace("_thumb.jpg", ""), variant="thumb")
except (OSError, IOError) as e:
log.warning(f"Auto-save photo for item {item_id}: Failed to save thumbnail: {str(e)}")
# Clean up original if thumbnail save fails
try:
old_photo = Path(original_path.lstrip("/"))
if old_photo.exists():
old_photo.unlink()
except Exception:
pass
return {
"status": "skipped",
"reason": f"Failed to save thumbnail: {str(e)}"
}
# Update database
db_item.photo_path = original_path
db_item.photo_thumbnail_path = thumbnail_path
db_item.photo_upload_date = datetime.now(timezone.utc)
db.commit()
db.refresh(db_item)
log.info(f"Auto-save photo for item {item_id}: Success")
return {
"status": "ok"
}
except Exception as e:
db.rollback()
log.warning(f"Auto-save photo for item {item_id}: Unexpected error: {str(e)}")
return {
"status": "skipped",
"reason": f"Unexpected error: {str(e)}"
}
except Exception as e:
# Catch-all for any unexpected errors (never throw)
log.warning(f"Auto-save photo for item {item_id}: Outer exception: {str(e)}")
return {
"status": "skipped",
"reason": f"Internal error: {str(e)}"
}

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@@ -0,0 +1,523 @@
"""
Test suite for _auto_save_photo_from_extraction helper function.
Tests cover:
- Auto-save with valid crop_bounds → photo saved, item updated
- Graceful skip when crop_bounds is None
- Graceful skip when crop_bounds is invalid (missing keys, invalid values)
- Graceful skip when rotation_degrees is invalid
- Verify item.photo_path, photo_thumbnail_path, photo_upload_date set correctly
- Error handling (missing item, no image_bytes, processing failures)
- Logging of warnings for skipped saves
"""
import io
import json
from datetime import datetime, timezone
from pathlib import Path
from unittest.mock import patch, MagicMock
import pytest
from fastapi.testclient import TestClient
from sqlalchemy.orm import Session
from backend import models
from backend.routers.items import _auto_save_photo_from_extraction
# ============================================================================
# FIXTURES
# ============================================================================
@pytest.fixture
def test_item_for_extraction(test_db: Session):
"""Create a test item in the database for extraction tests."""
item = models.Item(
id=100,
barcode="EXTRACT_TEST_001",
name="Network Card",
category="networking",
quantity=5.0
)
test_db.add(item)
test_db.commit()
test_db.refresh(item)
return item
@pytest.fixture
def sample_image_bytes():
"""Create a minimal valid JPEG image for testing."""
from PIL import Image
# Create a simple 200x200 red image
img = Image.new('RGB', (200, 200), color='red')
img_bytes = io.BytesIO()
img.save(img_bytes, format='JPEG')
img_bytes.seek(0)
return img_bytes.getvalue()
@pytest.fixture
def valid_crop_bounds():
"""Valid crop bounds dict."""
return {
'x': 10,
'y': 20,
'width': 150,
'height': 160
}
# ============================================================================
# TESTS: AUTO-SAVE WITH VALID CROP BOUNDS
# ============================================================================
def test_auto_save_with_valid_crop_bounds(
test_db: Session,
test_item_for_extraction,
sample_image_bytes,
valid_crop_bounds
):
"""Test auto-save succeeds with valid crop_bounds."""
result = _auto_save_photo_from_extraction(
item_id=test_item_for_extraction.id,
image_bytes=sample_image_bytes,
crop_bounds=valid_crop_bounds,
rotation_degrees=0,
db=test_db
)
# Verify result status
assert result["status"] == "ok"
# Verify item was updated
updated_item = test_db.query(models.Item).filter(
models.Item.id == test_item_for_extraction.id
).first()
assert updated_item.photo_path is not None
assert updated_item.photo_thumbnail_path is not None
assert updated_item.photo_upload_date is not None
# Verify paths are valid
assert "/images/" in updated_item.photo_path
assert "/images/" in updated_item.photo_thumbnail_path
assert updated_item.photo_path.endswith(".jpg")
assert updated_item.photo_thumbnail_path.endswith(".jpg")
# Cleanup
Path(updated_item.photo_path.lstrip("/")).unlink(missing_ok=True)
Path(updated_item.photo_thumbnail_path.lstrip("/")).unlink(missing_ok=True)
def test_auto_save_with_rotation_degrees(
test_db: Session,
test_item_for_extraction,
sample_image_bytes,
valid_crop_bounds
):
"""Test auto-save works with rotation_degrees."""
result = _auto_save_photo_from_extraction(
item_id=test_item_for_extraction.id,
image_bytes=sample_image_bytes,
crop_bounds=valid_crop_bounds,
rotation_degrees=90,
db=test_db
)
assert result["status"] == "ok"
updated_item = test_db.query(models.Item).filter(
models.Item.id == test_item_for_extraction.id
).first()
assert updated_item.photo_path is not None
assert updated_item.photo_upload_date is not None
# Cleanup
Path(updated_item.photo_path.lstrip("/")).unlink(missing_ok=True)
Path(updated_item.photo_thumbnail_path.lstrip("/")).unlink(missing_ok=True)
def test_auto_save_with_negative_rotation(
test_db: Session,
test_item_for_extraction,
sample_image_bytes,
valid_crop_bounds
):
"""Test auto-save handles negative rotation degrees."""
result = _auto_save_photo_from_extraction(
item_id=test_item_for_extraction.id,
image_bytes=sample_image_bytes,
crop_bounds=valid_crop_bounds,
rotation_degrees=-45,
db=test_db
)
assert result["status"] == "ok"
updated_item = test_db.query(models.Item).filter(
models.Item.id == test_item_for_extraction.id
).first()
assert updated_item.photo_path is not None
# Cleanup
Path(updated_item.photo_path.lstrip("/")).unlink(missing_ok=True)
Path(updated_item.photo_thumbnail_path.lstrip("/")).unlink(missing_ok=True)
# ============================================================================
# TESTS: GRACEFUL SKIP WHEN CROP_BOUNDS IS NONE
# ============================================================================
def test_auto_save_skip_when_crop_bounds_none(
test_db: Session,
test_item_for_extraction,
sample_image_bytes
):
"""Test graceful skip when crop_bounds is None."""
result = _auto_save_photo_from_extraction(
item_id=test_item_for_extraction.id,
image_bytes=sample_image_bytes,
crop_bounds=None,
rotation_degrees=0,
db=test_db
)
# Should skip gracefully
assert result["status"] == "skipped"
assert "reason" in result
# Item should not be updated
updated_item = test_db.query(models.Item).filter(
models.Item.id == test_item_for_extraction.id
).first()
assert updated_item.photo_path is None
assert updated_item.photo_upload_date is None
# ============================================================================
# TESTS: GRACEFUL SKIP WHEN CROP_BOUNDS IS INVALID
# ============================================================================
def test_auto_save_skip_when_crop_bounds_missing_keys(
test_db: Session,
test_item_for_extraction,
sample_image_bytes
):
"""Test graceful skip when crop_bounds is missing required keys."""
invalid_bounds = {'x': 10, 'y': 20} # Missing width, height
result = _auto_save_photo_from_extraction(
item_id=test_item_for_extraction.id,
image_bytes=sample_image_bytes,
crop_bounds=invalid_bounds,
rotation_degrees=0,
db=test_db
)
assert result["status"] == "skipped"
assert "reason" in result
updated_item = test_db.query(models.Item).filter(
models.Item.id == test_item_for_extraction.id
).first()
assert updated_item.photo_path is None
def test_auto_save_skip_when_crop_bounds_invalid_values(
test_db: Session,
test_item_for_extraction,
sample_image_bytes
):
"""Test graceful skip when crop_bounds contains non-integer values."""
invalid_bounds = {
'x': 'not_int',
'y': 20,
'width': 150,
'height': 160
}
result = _auto_save_photo_from_extraction(
item_id=test_item_for_extraction.id,
image_bytes=sample_image_bytes,
crop_bounds=invalid_bounds,
rotation_degrees=0,
db=test_db
)
assert result["status"] == "skipped"
updated_item = test_db.query(models.Item).filter(
models.Item.id == test_item_for_extraction.id
).first()
assert updated_item.photo_path is None
def test_auto_save_skip_when_crop_bounds_negative_values(
test_db: Session,
test_item_for_extraction,
sample_image_bytes
):
"""Test graceful skip when crop_bounds contains negative values."""
invalid_bounds = {
'x': -10,
'y': 20,
'width': 150,
'height': 160
}
result = _auto_save_photo_from_extraction(
item_id=test_item_for_extraction.id,
image_bytes=sample_image_bytes,
crop_bounds=invalid_bounds,
rotation_degrees=0,
db=test_db
)
assert result["status"] == "skipped"
updated_item = test_db.query(models.Item).filter(
models.Item.id == test_item_for_extraction.id
).first()
assert updated_item.photo_path is None
# ============================================================================
# TESTS: GRACEFUL SKIP WHEN ROTATION_DEGREES IS INVALID
# ============================================================================
def test_auto_save_skip_when_rotation_out_of_range(
test_db: Session,
test_item_for_extraction,
sample_image_bytes,
valid_crop_bounds
):
"""Test graceful skip when rotation_degrees exceeds valid range."""
result = _auto_save_photo_from_extraction(
item_id=test_item_for_extraction.id,
image_bytes=sample_image_bytes,
crop_bounds=valid_crop_bounds,
rotation_degrees=450, # > 360
db=test_db
)
assert result["status"] == "skipped"
assert "reason" in result
updated_item = test_db.query(models.Item).filter(
models.Item.id == test_item_for_extraction.id
).first()
assert updated_item.photo_path is None
def test_auto_save_skip_when_rotation_is_string(
test_db: Session,
test_item_for_extraction,
sample_image_bytes,
valid_crop_bounds
):
"""Test graceful skip when rotation_degrees is not numeric."""
result = _auto_save_photo_from_extraction(
item_id=test_item_for_extraction.id,
image_bytes=sample_image_bytes,
crop_bounds=valid_crop_bounds,
rotation_degrees="not_a_number",
db=test_db
)
assert result["status"] == "skipped"
updated_item = test_db.query(models.Item).filter(
models.Item.id == test_item_for_extraction.id
).first()
assert updated_item.photo_path is None
# ============================================================================
# TESTS: ERROR HANDLING
# ============================================================================
def test_auto_save_skip_when_item_not_found(
test_db: Session,
sample_image_bytes,
valid_crop_bounds
):
"""Test graceful skip when item does not exist."""
result = _auto_save_photo_from_extraction(
item_id=99999, # Non-existent item
image_bytes=sample_image_bytes,
crop_bounds=valid_crop_bounds,
rotation_degrees=0,
db=test_db
)
assert result["status"] == "skipped"
assert "reason" in result
def test_auto_save_skip_when_image_bytes_empty(
test_db: Session,
test_item_for_extraction,
valid_crop_bounds
):
"""Test graceful skip when image_bytes is empty."""
result = _auto_save_photo_from_extraction(
item_id=test_item_for_extraction.id,
image_bytes=b'',
crop_bounds=valid_crop_bounds,
rotation_degrees=0,
db=test_db
)
assert result["status"] == "skipped"
updated_item = test_db.query(models.Item).filter(
models.Item.id == test_item_for_extraction.id
).first()
assert updated_item.photo_path is None
def test_auto_save_skip_when_image_bytes_invalid(
test_db: Session,
test_item_for_extraction,
valid_crop_bounds
):
"""Test graceful skip when image_bytes is not a valid image."""
result = _auto_save_photo_from_extraction(
item_id=test_item_for_extraction.id,
image_bytes=b'not a valid image',
crop_bounds=valid_crop_bounds,
rotation_degrees=0,
db=test_db
)
assert result["status"] == "skipped"
updated_item = test_db.query(models.Item).filter(
models.Item.id == test_item_for_extraction.id
).first()
assert updated_item.photo_path is None
# ============================================================================
# TESTS: LARGE CROP BOUNDS (4K IMAGE SUPPORT)
# ============================================================================
def test_auto_save_with_large_crop_bounds(
test_db: Session,
test_item_for_extraction,
sample_image_bytes
):
"""Test auto-save works with large crop bounds (4K image support)."""
large_bounds = {
'x': 100,
'y': 100,
'width': 2000,
'height': 1500
}
result = _auto_save_photo_from_extraction(
item_id=test_item_for_extraction.id,
image_bytes=sample_image_bytes,
crop_bounds=large_bounds,
rotation_degrees=0,
db=test_db
)
# Should handle gracefully (may skip due to image being too small for bounds,
# but should not crash)
assert result["status"] in ["ok", "skipped"]
if result["status"] == "ok":
updated_item = test_db.query(models.Item).filter(
models.Item.id == test_item_for_extraction.id
).first()
assert updated_item.photo_path is not None
# Cleanup
Path(updated_item.photo_path.lstrip("/")).unlink(missing_ok=True)
Path(updated_item.photo_thumbnail_path.lstrip("/")).unlink(missing_ok=True)
# ============================================================================
# TESTS: MULTIPLE ITEMS WITH INDEPENDENT IMAGE_PROCESSING DATA
# ============================================================================
def test_auto_save_multiple_items_independent(
test_db: Session,
sample_image_bytes
):
"""Test auto-save handles multiple items with independent data."""
item1 = models.Item(id=201, barcode="MULTI_001", name="Item1", category="cat1", quantity=1.0)
item2 = models.Item(id=202, barcode="MULTI_002", name="Item2", category="cat2", quantity=2.0)
test_db.add(item1)
test_db.add(item2)
test_db.commit()
bounds1 = {'x': 10, 'y': 10, 'width': 100, 'height': 100}
bounds2 = {'x': 20, 'y': 20, 'width': 150, 'height': 150}
result1 = _auto_save_photo_from_extraction(
item_id=201,
image_bytes=sample_image_bytes,
crop_bounds=bounds1,
rotation_degrees=0,
db=test_db
)
result2 = _auto_save_photo_from_extraction(
item_id=202,
image_bytes=sample_image_bytes,
crop_bounds=bounds2,
rotation_degrees=90,
db=test_db
)
assert result1["status"] == "ok"
assert result2["status"] == "ok"
# Verify both items were updated independently
updated1 = test_db.query(models.Item).filter(models.Item.id == 201).first()
updated2 = test_db.query(models.Item).filter(models.Item.id == 202).first()
assert updated1.photo_path is not None
assert updated2.photo_path is not None
assert updated1.photo_path != updated2.photo_path # Different files
# Cleanup
Path(updated1.photo_path.lstrip("/")).unlink(missing_ok=True)
Path(updated1.photo_thumbnail_path.lstrip("/")).unlink(missing_ok=True)
Path(updated2.photo_path.lstrip("/")).unlink(missing_ok=True)
Path(updated2.photo_thumbnail_path.lstrip("/")).unlink(missing_ok=True)
# ============================================================================
# TESTS: NO EXCEPTIONS THROWN
# ============================================================================
def test_auto_save_never_throws_exceptions(
test_db: Session,
test_item_for_extraction
):
"""Test that helper never throws exceptions, always returns status dict."""
# Test with all kinds of bad input - none should throw
test_cases = [
(None, None, None),
(b'', {}, None),
(None, {'x': 'bad'}, 'not_a_number'),
(b'bad_image', {'x': 0, 'y': 0, 'width': 100}, 450),
]
for image_bytes, crop_bounds, rotation in test_cases:
result = _auto_save_photo_from_extraction(
item_id=test_item_for_extraction.id,
image_bytes=image_bytes,
crop_bounds=crop_bounds,
rotation_degrees=rotation,
db=test_db
)
# Must always return a dict with 'status' key
assert isinstance(result, dict)
assert "status" in result
assert result["status"] in ["ok", "skipped"]