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import os, cv2, base64, logging, zipfile, requests, tempfile, shutil
import boto3
from uuid import uuid4
from typing import Any, Dict, List, Optional
from datetime import datetime
from dotenv import load_dotenv
from io import BytesIO
logger = logging.getLogger(__name__)
load_dotenv()
# ---------------------------
# R2 Config
# ---------------------------
R2_ACCESS_KEY = os.getenv("R2_ACCESS_KEY")
R2_SECRET_KEY = os.getenv("R2_SECRET_KEY")
R2_BUCKET_NAME = os.getenv("R2_BUCKET_NAME")
R2_ENDPOINT = os.getenv("R2_ENDPOINT")
NEW_BASE = os.getenv("NEW_BASE", "").rstrip("/")
if not all([R2_ACCESS_KEY, R2_SECRET_KEY, R2_BUCKET_NAME, R2_ENDPOINT, NEW_BASE]):
logger.warning("Some R2 env vars are missing. Uploads may fail.")
r2 = boto3.client(
"s3",
endpoint_url=R2_ENDPOINT,
aws_access_key_id=R2_ACCESS_KEY,
aws_secret_access_key=R2_SECRET_KEY,
)
# ---------------------------
# R2 Upload Helpers
# ---------------------------
def upload_to_r2(file_path: str, key: str, content_type: str = "application/octet-stream") -> str:
"""
Upload a file from disk to R2 and return public URL.
"""
r2.upload_file(
file_path,
R2_BUCKET_NAME,
key,
ExtraArgs={"ContentType": content_type},
)
return f"{NEW_BASE}/{key}"
def upload_image_to_r2(
image_bytes: bytes,
folder_name: str = "default",
app_type: str = "image_uploads",
ext: str = "png",
content_type: str = "image/png",
) -> Optional[str]:
"""
Upload raw image bytes to R2 and return public URL.
"""
try:
filename = f"{uuid4().hex}.{ext.lstrip('.')}"
file_key = f"{app_type.strip('/')}/{folder_name.strip('/')}/{filename}"
r2.put_object(
Bucket=R2_BUCKET_NAME,
Key=file_key,
Body=image_bytes,
ContentType=content_type
)
return f"{NEW_BASE}/{file_key}"
except Exception as e:
logger.error(f"upload_image_to_r2 failed: {e}")
return None
def upload_pil_image_to_r2(
pil_img,
folder_name: str = "default",
app_type: str = "image_uploads",
format: str = "PNG",
) -> Optional[str]:
"""
Takes a PIL image, converts to bytes, uploads to R2,
returns public URL.
"""
try:
buf = BytesIO()
pil_img.save(buf, format=format, optimize=True)
img_bytes = buf.getvalue()
ext = format.lower()
content_type = f"image/{ext if ext != 'jpg' else 'jpeg'}"
return upload_image_to_r2(
img_bytes,
folder_name=folder_name,
app_type=app_type,
ext=ext,
content_type=content_type
)
except Exception as e:
logger.error(f"upload_pil_image_to_r2 failed: {e}")
return None
# ---------------------------
# Media helpers (unchanged)
# ---------------------------
def get_video_thumbnail_base64(video_path: str, time_sec: int = 1) -> str:
try:
cap = cv2.VideoCapture(video_path)
cap.set(cv2.CAP_PROP_POS_MSEC, time_sec * 1000)
success, frame = cap.read()
cap.release()
if not success:
return ""
_, buffer = cv2.imencode(".jpg", frame)
return base64.b64encode(buffer).decode("utf-8")
except Exception:
logger.exception("Thumbnail extraction failed")
return ""
def encode_image_to_base64(image_path: str) -> str:
with open(image_path, "rb") as f:
return base64.b64encode(f.read()).decode("utf-8")
def is_valid_image(file_name: str) -> bool:
return file_name.lower().endswith((".png", ".jpg", ".jpeg", ".bmp", ".gif", ".webp"))
# ---------------------------
# Stats / labels (unchanged)
# ---------------------------
def _mean_effectiveness(metrics):
if not metrics:
return 0.0
scores = []
for m in metrics:
s = str(m.get("effectiveness_score", "0/10")).split("/")[0]
try:
scores.append(int(s))
except Exception:
pass
return round(sum(scores) / len(scores), 2) if scores else 0.0
def _coerce_dt(val: Any) -> Optional[datetime]:
if isinstance(val, datetime):
return val
try:
return datetime.fromisoformat(str(val))
except Exception:
return None
def _label_for_item(doc: Dict[str, Any]) -> str:
ts = _coerce_dt(doc.get("created_at"))
ts_s = ts.strftime("%Y-%m-%d %H:%M") if ts else "Unknown time"
cat = doc.get("category") or "—"
model = doc.get("analyzer_model") or doc.get("model_name") or "—"
return f"{ts_s} · {cat} · {model}"
# ---------------------------
# ZIP gallery (unchanged)
# ---------------------------
def _zip_gallery_images(gallery_items):
if not gallery_items:
return None
image_urls = [item["url"] if isinstance(item, dict) else item for item in gallery_items]
temp_dir = tempfile.mkdtemp()
try:
zip_path = tempfile.NamedTemporaryFile(delete=False, suffix=".zip").name
for i, url in enumerate(image_urls):
try:
ext = url.split("?")[0].split(".")[-1]
ext = ext if ext and len(ext) <= 5 else "png"
file_path = os.path.join(temp_dir, f"image_{i}.{ext}")
if url.startswith(("http://", "https://")):
resp = requests.get(url, timeout=15)
resp.raise_for_status()
with open(file_path, "wb") as f:
f.write(resp.content)
elif os.path.exists(url):
shutil.copy(url, file_path)
except Exception as e:
logger.error(f"Error processing image {url}: {e}")
with zipfile.ZipFile(zip_path, "w") as zipf:
for file_name in os.listdir(temp_dir):
zipf.write(os.path.join(temp_dir, file_name), arcname=file_name)
return zip_path
except Exception as e:
logger.critical(f"Failed to create zip: {e}")
return None
finally:
shutil.rmtree(temp_dir, ignore_errors=True)
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