Update app.py

app.py

@@ -1411,6 +1411,1425 @@
 
 
 # --------------------- List Images Endpoint ---------------------
+# import os
+# os.environ["OMP_NUM_THREADS"] = "1"
+# import shutil
+# import uuid
+# import cv2
+# import numpy as np
+# import threading
+# import subprocess
+# import logging
+# import tempfile
+# import sys
+# from datetime import datetime,timedelta
+# import tempfile
+# import insightface
+# from insightface.app import FaceAnalysis
+# from huggingface_hub import hf_hub_download
+# from fastapi import FastAPI, UploadFile, File, HTTPException, Response, Depends, Security, Form
+# from fastapi.responses import RedirectResponse
+# from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
+# from motor.motor_asyncio import AsyncIOMotorClient
+# from bson import ObjectId
+# from bson.errors import InvalidId
+# import httpx
+# import uvicorn
+# import gradio as gr
+# from gradio import mount_gradio_app
+# from PIL import Image
+# import io
+# # from scipy import ndimage
+# # DigitalOcean Spaces
+# import boto3
+# from botocore.client import Config
+# from typing import Optional
+
+# # --------------------- Logging ---------------------
+# logging.basicConfig(level=logging.INFO)
+# logger = logging.getLogger(__name__)
+
+# # --------------------- Secrets & Paths ---------------------
+# REPO_ID = "HariLogicgo/face_swap_models"
+# MODELS_DIR = "./models"
+# os.makedirs(MODELS_DIR, exist_ok=True)
+
+# HF_TOKEN = os.getenv("HF_TOKEN")
+# API_SECRET_TOKEN = os.getenv("API_SECRET_TOKEN")
+
+# DO_SPACES_REGION = os.getenv("DO_SPACES_REGION", "blr1")
+# DO_SPACES_ENDPOINT = f"https://{DO_SPACES_REGION}.digitaloceanspaces.com"
+# DO_SPACES_KEY = os.getenv("DO_SPACES_KEY")
+# DO_SPACES_SECRET = os.getenv("DO_SPACES_SECRET")
+# DO_SPACES_BUCKET = os.getenv("DO_SPACES_BUCKET")
+
+# # NEW admin DB (with error handling for missing env vars)
+# ADMIN_MONGO_URL = os.getenv("ADMIN_MONGO_URL")
+# admin_client = None
+# admin_db = None
+# subcategories_col = None
+# media_clicks_col = None
+# if ADMIN_MONGO_URL:
+#     try:
+#         admin_client = AsyncIOMotorClient(ADMIN_MONGO_URL)
+#         admin_db = admin_client.adminPanel
+#         subcategories_col = admin_db.subcategories
+#         media_clicks_col = admin_db.media_clicks
+#     except Exception as e:
+#         logger.warning(f"MongoDB admin connection failed (optional): {e}")
+
+# # Collage Maker DB (optional)
+# COLLAGE_MAKER_DB_URL = os.getenv("COLLAGE_MAKER_DB_URL")
+# collage_maker_client = None
+# collage_maker_db = None
+# collage_media_clicks_col = None
+# if COLLAGE_MAKER_DB_URL:
+#     try:
+#         collage_maker_client = AsyncIOMotorClient(COLLAGE_MAKER_DB_URL)
+#         collage_maker_db = collage_maker_client.adminPanel
+#         collage_media_clicks_col = collage_maker_db.media_clicks
+#     except Exception as e:
+#         logger.warning(f"MongoDB ai-enhancer connection failed (optional): {e}")
+        
+# # AI Enhancer DB (optional)
+
+# AI_ENHANCER_DB_URL = os.getenv("AI_ENHANCER_DB_URL")
+# ai_enhancer_client = None
+# ai_enhancer_db = None
+# ai_enhancer_media_clicks_col = None
+# ai_enhancer_subcategories_col = None
+
+# if AI_ENHANCER_DB_URL:
+#     try:
+#         ai_enhancer_client = AsyncIOMotorClient(AI_ENHANCER_DB_URL)
+#         ai_enhancer_db = ai_enhancer_client.test   # 🔴 test database
+#         ai_enhancer_media_clicks_col = ai_enhancer_db.media_clicks
+#         ai_enhancer_subcategories_col = ai_enhancer_db.subcategories
+#     except Exception as e:
+#         logger.warning(f"MongoDB ai-enhancer connection failed (optional): {e}")
+
+
+# def get_media_clicks_collection(appname: Optional[str] = None):
+#     """Return the media clicks collection for the given app (default: main admin)."""
+#     if appname and str(appname).strip().lower() == "collage-maker":
+#         return collage_media_clicks_col
+#     return media_clicks_col
+
+
+# # OLD logs DB
+# MONGODB_URL = os.getenv("MONGODB_URL")
+# client = None
+# database = None
+
+# # --------------------- Download Models ---------------------
+# def download_models():
+#     try:
+#         logger.info("Downloading models...")
+#         inswapper_path = hf_hub_download(
+#             repo_id=REPO_ID,
+#             filename="models/inswapper_128.onnx",
+#             repo_type="model",
+#             local_dir=MODELS_DIR,
+#             token=HF_TOKEN
+#         )
+
+#         buffalo_files = ["1k3d68.onnx", "2d106det.onnx", "genderage.onnx", "det_10g.onnx", "w600k_r50.onnx"]
+#         for f in buffalo_files:
+#             hf_hub_download(
+#                 repo_id=REPO_ID,
+#                 filename=f"models/buffalo_l/" + f,
+#                 repo_type="model",
+#                 local_dir=MODELS_DIR,
+#                 token=HF_TOKEN
+#             )
+
+#         logger.info("Models downloaded successfully.")
+#         return inswapper_path
+#     except Exception as e:
+#         logger.error(f"Model download failed: {e}")
+#         raise
+
+# try:
+#     inswapper_path = download_models()
+    
+#     # --------------------- Face Analysis + Swapper ---------------------
+#     providers = ['CUDAExecutionProvider', 'CPUExecutionProvider']
+#     face_analysis_app = FaceAnalysis(name="buffalo_l", root=MODELS_DIR, providers=providers)
+#     face_analysis_app.prepare(ctx_id=0, det_size=(640, 640))
+#     swapper = insightface.model_zoo.get_model(inswapper_path, providers=providers)
+#     logger.info("Face analysis models loaded successfully")
+# except Exception as e:
+#     logger.error(f"Failed to initialize face analysis models: {e}")
+#     # Set defaults to prevent crash
+#     inswapper_path = None
+#     face_analysis_app = None
+#     swapper = None
+
+# # --------------------- CodeFormer ---------------------
+# CODEFORMER_PATH = "CodeFormer/inference_codeformer.py"
+
+# def ensure_codeformer():
+#     try:
+#         if not os.path.exists("CodeFormer"):
+#             logger.info("CodeFormer not found, cloning repository...")
+#             subprocess.run("git clone https://github.com/sczhou/CodeFormer.git", shell=True, check=True)
+#             subprocess.run("pip install -r CodeFormer/requirements.txt", shell=True, check=False)  # Non-critical deps
+        
+#         # Always ensure BasicSR is installed from local directory
+#         # This is needed for Hugging Face Spaces where BasicSR can't be installed from GitHub
+#         if os.path.exists("CodeFormer/basicsr/setup.py"):
+#             logger.info("Installing BasicSR from local directory...")
+#             subprocess.run("python CodeFormer/basicsr/setup.py develop", shell=True, check=True)
+#             logger.info("BasicSR installed successfully")
+        
+#         # Install realesrgan after BasicSR is installed (realesrgan depends on BasicSR)
+#         # This must be done after BasicSR installation to avoid PyPI install issues
+#         try:
+#             import realesrgan
+#             logger.info("RealESRGAN already installed")
+#         except ImportError:
+#             logger.info("Installing RealESRGAN...")
+#             subprocess.run("pip install --no-cache-dir realesrgan", shell=True, check=True)
+#             logger.info("RealESRGAN installed successfully")
+        
+#         # Download models if CodeFormer exists (fixed logic)
+#         if os.path.exists("CodeFormer"):
+#             try:
+#                 subprocess.run("python CodeFormer/scripts/download_pretrained_models.py facelib", shell=True, check=False, timeout=300)
+#             except (subprocess.TimeoutExpired, subprocess.CalledProcessError):
+#                 logger.warning("Failed to download facelib models (optional)")
+#             try:
+#                 subprocess.run("python CodeFormer/scripts/download_pretrained_models.py CodeFormer", shell=True, check=False, timeout=300)
+#             except (subprocess.TimeoutExpired, subprocess.CalledProcessError):
+#                 logger.warning("Failed to download CodeFormer models (optional)")
+#     except Exception as e:
+#         logger.error(f"CodeFormer setup failed: {e}")
+#         logger.warning("Continuing without CodeFormer features...")
+
+# ensure_codeformer()
+# # --------------------- FastAPI ---------------------
+# fastapi_app = FastAPI()
+
+# @fastapi_app.on_event("startup")
+# async def startup_db():
+#     global client, database
+#     if MONGODB_URL:
+#         try:
+#             logger.info("Initializing MongoDB for API logs...")
+#             client = AsyncIOMotorClient(MONGODB_URL)
+#             database = client.FaceSwap
+#             logger.info("MongoDB initialized for API logs")
+#         except Exception as e:
+#             logger.warning(f"MongoDB connection failed (optional): {e}")
+#             client = None
+#             database = None
+#     else:
+#         logger.warning("MONGODB_URL not set, skipping MongoDB initialization")
+
+# @fastapi_app.on_event("shutdown")
+# async def shutdown_db():
+#     global client, admin_client, collage_maker_client
+#     if client is not None:
+#         client.close()
+#         logger.info("MongoDB connection closed")
+#     if admin_client is not None:
+#         admin_client.close()
+#         logger.info("Admin MongoDB connection closed")
+#     if collage_maker_client is not None:
+#         collage_maker_client.close()
+#         logger.info("Collage Maker MongoDB connection closed")
+
+# # --------------------- Auth ---------------------
+# security = HTTPBearer()
+
+# def verify_token(credentials: HTTPAuthorizationCredentials = Security(security)):
+#     if credentials.credentials != API_SECRET_TOKEN:
+#         raise HTTPException(status_code=401, detail="Invalid or missing token")
+#     return credentials.credentials
+
+# # --------------------- DB Selector ---------------------
+# # def get_media_clicks_collection(appname: Optional[str] = None):
+# #     """
+# #     Returns the correct media_clicks collection based on appname.
+# #     Defaults to the primary admin database when no appname is provided
+# #     or when the requested database is unavailable.
+# #     """
+# #     if appname:
+# #         normalized = appname.strip().lower()
+# #         if normalized == "collage-maker":
+# #             if collage_media_clicks_col is not None:
+# #                 return collage_media_clicks_col
+# #             logger.warning("COLLAGE_MAKER_DB_URL not configured; falling back to default media_clicks collection")
+# #     return media_clicks_col
+# def get_app_db_collections(appname: Optional[str] = None):
+#     """
+#     Returns (media_clicks_collection, subcategories_collection)
+#     based on appname.
+#     """
+
+#     if appname:
+#         app = appname.strip().lower()
+
+#         if app == "collage-maker":
+#             if collage_media_clicks_col is not None and subcategories_col is not None:
+#                 return collage_media_clicks_col, subcategories_col
+#             logger.warning("Collage-maker DB not configured, falling back to admin")
+
+#         elif app == "ai-enhancer":
+#             if ai_enhancer_media_clicks_col is not None and ai_enhancer_subcategories_col is not None:
+#                 return ai_enhancer_media_clicks_col, ai_enhancer_subcategories_col
+#             logger.warning("AI-Enhancer DB not configured, falling back to admin")
+
+#     # default fallback
+#     return media_clicks_col, subcategories_col
+
+
+
+# # --------------------- Logging API Hits ---------------------
+# async def log_faceswap_hit(token: str, status: str = "success"):
+#     global database
+#     if database is None:
+#         return
+#     await database.api_logs.insert_one({
+#         "token": token,
+#         "endpoint": "/faceswap",
+#         "status": status,
+#         "timestamp": datetime.utcnow()
+#     })
+
+# # --------------------- Face Swap Pipeline ---------------------
+# swap_lock = threading.Lock()
+
+# def enhance_image_with_codeformer(rgb_img, temp_dir=None):
+#     if temp_dir is None:
+#         temp_dir = os.path.join(tempfile.gettempdir(), f"enhance_{uuid.uuid4().hex[:8]}")
+#     os.makedirs(temp_dir, exist_ok=True)
+
+#     input_path = os.path.join(temp_dir, "input.jpg")
+#     cv2.imwrite(input_path, cv2.cvtColor(rgb_img, cv2.COLOR_RGB2BGR))
+
+#     python_cmd = sys.executable if sys.executable else "python3"
+#     cmd = (
+#         f"{python_cmd} {CODEFORMER_PATH} "
+#         f"-w 0.7 "
+#         f"--input_path {input_path} "
+#         f"--output_path {temp_dir} "
+#         f"--bg_upsampler realesrgan "
+#         f"--face_upsample"
+#     )
+
+#     result = subprocess.run(cmd, shell=True, capture_output=True, text=True)
+#     if result.returncode != 0:
+#         raise RuntimeError(result.stderr)
+
+#     final_dir = os.path.join(temp_dir, "final_results")
+#     files = [f for f in os.listdir(final_dir) if f.endswith(".png")]
+#     if not files:
+#         raise RuntimeError("No enhanced output")
+
+#     final_path = os.path.join(final_dir, files[0])
+#     enhanced = cv2.imread(final_path)
+#     return cv2.cvtColor(enhanced, cv2.COLOR_BGR2RGB)
+    
+# def multi_face_swap(src_img, tgt_img):
+#     src_bgr = cv2.cvtColor(src_img, cv2.COLOR_RGB2BGR)
+#     tgt_bgr = cv2.cvtColor(tgt_img, cv2.COLOR_RGB2BGR)
+
+#     src_faces = face_analysis_app.get(src_bgr)
+#     tgt_faces = face_analysis_app.get(tgt_bgr)
+
+#     if not src_faces or not tgt_faces:
+#         raise ValueError("No faces detected")
+
+#     def face_sort_key(face):
+#         x1, y1, x2, y2 = face.bbox
+#         area = (x2 - x1) * (y2 - y1)
+#         cx = (x1 + x2) / 2
+#         return (-area, cx)
+
+#     # Split by gender
+#     src_male = [f for f in src_faces if f.gender == 1]
+#     src_female = [f for f in src_faces if f.gender == 0]
+
+#     tgt_male = [f for f in tgt_faces if f.gender == 1]
+#     tgt_female = [f for f in tgt_faces if f.gender == 0]
+
+#     # Sort inside gender groups
+#     src_male = sorted(src_male, key=face_sort_key)
+#     src_female = sorted(src_female, key=face_sort_key)
+
+#     tgt_male = sorted(tgt_male, key=face_sort_key)
+#     tgt_female = sorted(tgt_female, key=face_sort_key)
+
+#     # Build final swap pairs
+#     pairs = []
+
+#     for s, t in zip(src_male, tgt_male):
+#         pairs.append((s, t))
+
+#     for s, t in zip(src_female, tgt_female):
+#         pairs.append((s, t))
+
+#     # Fallback if gender mismatch
+#     if not pairs:
+#         src_faces = sorted(src_faces, key=face_sort_key)
+#         tgt_faces = sorted(tgt_faces, key=face_sort_key)
+#         pairs = list(zip(src_faces, tgt_faces))
+
+#     result_img = tgt_bgr.copy()
+
+#     for src_face, _ in pairs:
+#         # 🔁 re-detect current target faces
+#         if face_analysis_app is None:
+#             raise ValueError("Face analysis models not initialized. Please ensure models are downloaded.")
+#         current_faces = face_analysis_app.get(result_img)
+#         current_faces = sorted(current_faces, key=face_sort_key)
+
+#         # choose best matching gender
+#         candidates = [
+#             f for f in current_faces if f.gender == src_face.gender
+#         ] or current_faces
+
+#         target_face = candidates[0]
+
+#         if swapper is None:
+#             raise ValueError("Face swap models not initialized. Please ensure models are downloaded.")
+#         result_img = swapper.get(
+#             result_img,
+#             target_face,
+#             src_face,
+#             paste_back=True
+#         )
+
+#     return cv2.cvtColor(result_img, cv2.COLOR_BGR2RGB)
+
+
+
+# def face_swap_and_enhance(src_img, tgt_img, temp_dir=None):
+#     try:
+#         with swap_lock:
+#             # Use a temp dir for intermediate files
+#             if temp_dir is None:
+#                 temp_dir = os.path.join(tempfile.gettempdir(), f"faceswap_work_{uuid.uuid4().hex[:8]}")
+#             if os.path.exists(temp_dir):
+#                 shutil.rmtree(temp_dir)
+#             os.makedirs(temp_dir, exist_ok=True)
+
+#             src_bgr = cv2.cvtColor(src_img, cv2.COLOR_RGB2BGR)
+#             tgt_bgr = cv2.cvtColor(tgt_img, cv2.COLOR_RGB2BGR)
+
+#             src_faces = face_analysis_app.get(src_bgr)
+#             tgt_faces = face_analysis_app.get(tgt_bgr)
+#             if face_analysis_app is None:
+#                 return None, None, "❌ Face analysis models not initialized. Please ensure models are downloaded."
+#             if not src_faces or not tgt_faces:
+#                 return None, None, "❌ Face not detected in one of the images"
+
+#             swapped_path = os.path.join(temp_dir, f"swapped_{uuid.uuid4().hex[:8]}.jpg")
+#             if swapper is None:
+#                 return None, None, "❌ Face swap models not initialized. Please ensure models are downloaded."
+#             swapped_bgr = swapper.get(tgt_bgr, tgt_faces[0], src_faces[0])
+#             if swapped_bgr is None:
+#                 return None, None, "❌ Face swap failed"
+
+#             cv2.imwrite(swapped_path, swapped_bgr)
+
+#             python_cmd = sys.executable if sys.executable else "python3"
+#             cmd = f"{python_cmd} {CODEFORMER_PATH} -w 0.7 --input_path {swapped_path} --output_path {temp_dir} --bg_upsampler realesrgan --face_upsample"
+#             result = subprocess.run(cmd, shell=True, capture_output=True, text=True)
+#             if result.returncode != 0:
+#                 return None, None, f"❌ CodeFormer failed:\n{result.stderr}"
+
+#             final_results_dir = os.path.join(temp_dir, "final_results")
+#             final_files = [f for f in os.listdir(final_results_dir) if f.endswith(".png")]
+#             if not final_files:
+#                 return None, None, "❌ No enhanced image found"
+
+#             final_path = os.path.join(final_results_dir, final_files[0])
+#             final_img_bgr = cv2.imread(final_path)
+#             if final_img_bgr is None:
+#                 return None, None, "❌ Failed to read enhanced image file"
+#             final_img = cv2.cvtColor(final_img_bgr, cv2.COLOR_BGR2RGB)
+
+#             return final_img, final_path, ""
+
+#     except Exception as e:
+#         return None, None, f"❌ Error: {str(e)}"
+        
+# def compress_image(
+#     image_bytes: bytes,
+#     max_size=(1280, 1280),   # max width/height
+#     quality=75               # JPEG quality (60–80 is ideal)
+# ) -> bytes:
+#     """
+#     Compress image by resizing and lowering quality.
+#     Returns compressed image bytes.
+#     """
+#     img = Image.open(io.BytesIO(image_bytes)).convert("RGB")
+
+#     # Resize while maintaining aspect ratio
+#     img.thumbnail(max_size, Image.LANCZOS)
+
+#     output = io.BytesIO()
+#     img.save(
+#         output,
+#         format="JPEG",
+#         quality=quality,
+#         optimize=True,
+#         progressive=True
+#     )
+
+#     return output.getvalue()
+
+# # --------------------- DigitalOcean Spaces Helper ---------------------
+# def get_spaces_client():
+#     session = boto3.session.Session()
+#     client = session.client(
+#         's3',
+#         region_name=DO_SPACES_REGION,
+#         endpoint_url=DO_SPACES_ENDPOINT,
+#         aws_access_key_id=DO_SPACES_KEY,
+#         aws_secret_access_key=DO_SPACES_SECRET,
+#         config=Config(signature_version='s3v4')
+#     )
+#     return client
+
+# def upload_to_spaces(file_bytes, key, content_type="image/png"):
+#     client = get_spaces_client()
+#     client.put_object(Bucket=DO_SPACES_BUCKET, Key=key, Body=file_bytes, ContentType=content_type, ACL='public-read')
+#     return f"{DO_SPACES_ENDPOINT}/{DO_SPACES_BUCKET}/{key}"
+
+# def download_from_spaces(key):
+#     client = get_spaces_client()
+#     obj = client.get_object(Bucket=DO_SPACES_BUCKET, Key=key)
+#     return obj['Body'].read()
+
+# def build_multi_faceswap_gradio():
+#     with gr.Blocks() as demo:
+#         gr.Markdown("## 👩‍❤️‍👨 Multi Face Swap (Couple → Couple)")
+
+#         with gr.Row():
+#             src = gr.Image(type="numpy", label="Source Image (2 Faces)")
+#             tgt = gr.Image(type="numpy", label="Target Image (2 Faces)")
+
+#         out = gr.Image(type="numpy", label="Swapped Result")
+#         error = gr.Textbox(label="Logs", interactive=False)
+
+#         def process(src_img, tgt_img):
+#             try:
+#                 swapped = multi_face_swap(src_img, tgt_img)
+#                 enhanced = enhance_image_with_codeformer(swapped)
+#                 return enhanced, ""
+#             except Exception as e:
+#                 return None, str(e)
+
+#         btn = gr.Button("Swap Faces")
+#         btn.click(process, [src, tgt], [out, error])
+
+#     return demo
+  
+# def mandatory_enhancement(rgb_img):
+#     """
+#     Always runs CodeFormer on the final image.
+#     Fail-safe: returns original if enhancement fails.
+#     """
+#     try:
+#         return enhance_image_with_codeformer(rgb_img)
+#     except Exception as e:
+#         logger.error(f"CodeFormer failed, returning original: {e}")
+#         return rgb_img
+
+# # --------------------- API Endpoints ---------------------
+# @fastapi_app.get("/")
+# async def root():
+#     """Root endpoint"""
+#     return {
+#         "success": True,
+#         "message": "FaceSwap API",
+#         "data": {
+#             "version": "1.0.0",
+#             "Product Name":"Beauty Camera - GlowCam AI Studio",
+#             "Released By" : "LogicGo Infotech"
+#         }
+#     }
+# @fastapi_app.get("/health")
+# async def health():
+#     return {"status": "healthy"}
+
+# from fastapi import Form
+# import requests
+# @fastapi_app.get("/test-admin-db")
+# async def test_admin_db():
+#     try:
+#         doc = await admin_db.list_collection_names()
+#         return {"ok": True, "collections": doc}
+#     except Exception as e:
+#         return {"ok": False, "error": str(e), "url": ADMIN_MONGO_URL}
+
+# @fastapi_app.post("/face-swap", dependencies=[Depends(verify_token)])
+# async def face_swap_api(
+#     source: UploadFile = File(...),
+#     target_category_id: str = Form(None),
+#     new_category_id: str = Form(None),
+#     user_id: Optional[str] = Form(None),
+#     appname: Optional[str] = Form(None),
+#     credentials: HTTPAuthorizationCredentials = Security(security)
+# ):
+#     start_time = datetime.utcnow()
+
+#     try:
+#         # ------------------------------------------------------------------
+#         # VALIDATION
+#         # ------------------------------------------------------------------
+#         # --------------------------------------------------------------
+#         # BACKWARD COMPATIBILITY FOR OLD ANDROID VERSIONS
+#         # --------------------------------------------------------------
+#         if target_category_id == "":
+#             target_category_id = None
+        
+#         if new_category_id == "":
+#             new_category_id = None
+        
+#         if user_id == "":
+#             user_id = None
+
+#         # media_clicks_collection = get_media_clicks_collection(appname)
+#         media_clicks_collection, subcategories_collection = get_app_db_collections(appname)
+
+
+#         logger.info(f"[FaceSwap] Incoming request → target_category_id={target_category_id}, new_category_id={new_category_id}, user_id={user_id}")
+
+#         if target_category_id and new_category_id:
+#             raise HTTPException(400, "Provide only one of new_category_id or target_category_id.")
+
+#         if not target_category_id and not new_category_id:
+#             raise HTTPException(400, "Either new_category_id or target_category_id is required.")
+
+#         # ------------------------------------------------------------------
+#         # READ SOURCE IMAGE
+#         # ------------------------------------------------------------------
+#         src_bytes = await source.read()
+#         src_key = f"faceswap/source/{uuid.uuid4().hex}_{source.filename}"
+#         upload_to_spaces(src_bytes, src_key, content_type=source.content_type)
+
+#         # ------------------------------------------------------------------
+#         # CASE 1 : new_category_id → MongoDB lookup
+#         # ------------------------------------------------------------------
+#         if new_category_id:
+
+#             # doc = await subcategories_col.find_one({
+#             #     "asset_images._id": ObjectId(new_category_id)
+#             # })
+#             doc = await subcategories_collection.find_one({
+#                 "asset_images._id": ObjectId(new_category_id)
+#             })
+
+
+#             if not doc:
+#                 raise HTTPException(404, "Asset image not found in database")
+
+#             # extract correct asset
+#             asset = next(
+#                 (img for img in doc["asset_images"] if str(img["_id"]) == new_category_id),
+#                 None
+#             )
+
+#             if not asset:
+#                 raise HTTPException(404, "Asset image URL not found")
+
+#             # correct URL
+#             target_url = asset["url"]
+
+#             # correct categoryId (ObjectId)
+#             #category_oid = doc["categoryId"]   # <-- DO NOT CONVERT TO STRING
+#             subcategory_oid = doc["_id"]
+    
+#             # ------------------------------------------------------------------#
+#             # # MEDIA_CLICKS (ONLY IF user_id PRESENT)
+#             # ------------------------------------------------------------------#
+#             if user_id and media_clicks_collection is not None:
+#                 try:
+#                     user_id_clean = user_id.strip()
+#                     if not user_id_clean:
+#                         raise ValueError("user_id cannot be empty")
+#                     try:
+#                         user_oid = ObjectId(user_id_clean)
+#                     except (InvalidId, ValueError) as e:
+#                         logger.error(f"Invalid user_id format: {user_id_clean}")
+#                         raise ValueError(f"Invalid user_id format: {user_id_clean}")
+                    
+#                     now = datetime.utcnow()
+            
+#                     # Normalize dates (UTC midnight)
+#                     today_date = datetime(now.year, now.month, now.day)
+            
+#                     # -------------------------------------------------
+#                     # STEP 1: Ensure root document exists
+#                     # -------------------------------------------------
+#                     await media_clicks_collection.update_one(
+#                         {"userId": user_oid},
+#                         {
+#                             "$setOnInsert": {
+#                                 "userId": user_oid,
+#                                 "createdAt": now,
+#                                 "ai_edit_complete": 0,
+#                                 "ai_edit_daily_count": []
+#                             }
+#                         },
+#                         upsert=True
+#                     )
+#                     # -------------------------------------------------
+#                     # STEP 2: Handle DAILY USAGE (BINARY, NO DUPLICATES)
+#                     # -------------------------------------------------
+#                     doc = await media_clicks_collection.find_one(
+#                         {"userId": user_oid},
+#                         {"ai_edit_daily_count": 1}
+#                     )
+                    
+#                     daily_entries = doc.get("ai_edit_daily_count", []) if doc else []
+                    
+#                     # Normalize today to UTC midnight
+#                     today_date = datetime(now.year, now.month, now.day)
+                    
+#                     # Build normalized date → count map (THIS ENFORCES UNIQUENESS)
+#                     daily_map = {}
+#                     for entry in daily_entries:
+#                         d = entry["date"]
+#                         if isinstance(d, datetime):
+#                             d = datetime(d.year, d.month, d.day)
+#                         daily_map[d] = entry["count"]  # overwrite = no duplicates
+                    
+#                     # Determine last recorded date
+#                     last_date = max(daily_map.keys()) if daily_map else today_date
+                    
+#                     # Fill ALL missing days with count = 0
+#                     next_day = last_date + timedelta(days=1)
+#                     while next_day < today_date:
+#                         daily_map.setdefault(next_day, 0)
+#                         next_day += timedelta(days=1)
+                    
+#                     # Mark today as used (binary)
+#                     daily_map[today_date] = 1
+                    
+#                     # Rebuild list: OLDEST → NEWEST
+#                     final_daily_entries = [
+#                         {"date": d, "count": daily_map[d]}
+#                         for d in sorted(daily_map.keys())
+#                     ]
+                    
+#                     # Keep only last 32 days
+#                     final_daily_entries = final_daily_entries[-32:]
+                    
+#                     # Atomic replace
+#                     await media_clicks_collection.update_one(
+#                         {"userId": user_oid},
+#                         {
+#                             "$set": {
+#                                 "ai_edit_daily_count": final_daily_entries,
+#                                 "updatedAt": now
+#                             }
+#                         }
+#                     )
+
+#                     # -------------------------------------------------
+#                     # STEP 3: Try updating existing subCategory
+#                     # -------------------------------------------------
+#                     update_result = await media_clicks_collection.update_one(
+#                         {
+#                             "userId": user_oid,
+#                             "subCategories.subCategoryId": subcategory_oid
+#                         },
+#                         {
+#                             "$inc": {
+#                                 "subCategories.$.click_count": 1,
+#                                 "ai_edit_complete": 1
+#                             },
+#                             "$set": {
+#                                 "subCategories.$.lastClickedAt": now,
+#                                 "ai_edit_last_date": now,
+#                                 "updatedAt": now
+#                             }
+#                         }
+#                     )
+            
+#                     # -------------------------------------------------
+#                     # STEP 4: Push subCategory if missing
+#                     # -------------------------------------------------
+#                     if update_result.matched_count == 0:
+#                         await media_clicks_collection.update_one(
+#                             {"userId": user_oid},
+#                             {
+#                                 "$inc": {
+#                                     "ai_edit_complete": 1
+#                                 },
+#                                 "$set": {
+#                                     "ai_edit_last_date": now,
+#                                     "updatedAt": now
+#                                 },
+#                                 "$push": {
+#                                     "subCategories": {
+#                                         "subCategoryId": subcategory_oid,
+#                                         "click_count": 1,
+#                                         "lastClickedAt": now
+#                                     }
+#                                 }
+#                             }
+#                         )
+                    
+#                     # -------------------------------------------------
+#                     # STEP 5: Sort subCategories by lastClickedAt (ascending - oldest first)
+#                     # -------------------------------------------------
+#                     user_doc = await media_clicks_collection.find_one({"userId": user_oid})
+#                     if user_doc and "subCategories" in user_doc:
+#                         subcategories = user_doc["subCategories"]
+#                         # Sort by lastClickedAt in ascending order (oldest first)
+#                         # Handle missing or None dates by using datetime.min
+#                         subcategories_sorted = sorted(
+#                             subcategories,
+#                             key=lambda x: x.get("lastClickedAt") if x.get("lastClickedAt") is not None else datetime.min
+#                         )
+#                         # Update with sorted array
+#                         await media_clicks_collection.update_one(
+#                             {"userId": user_oid},
+#                             {
+#                                 "$set": {
+#                                     "subCategories": subcategories_sorted,
+#                                     "updatedAt": now
+#                                 }
+#                             }
+#                         )
+            
+#                     logger.info(
+#                         "[MEDIA_CLICK] user=%s subCategory=%s ai_edit_complete++ daily_tracked",
+#                         user_id,
+#                         str(subcategory_oid)
+#                     )
+
+#                 except Exception as media_err:
+#                     logger.error(f"MEDIA_CLICK ERROR: {media_err}")
+#             elif user_id and media_clicks_collection is None:
+#                 logger.warning("Media clicks collection unavailable; skipping media click tracking")
+
+# #         # ------------------------------------------------------------------
+# #         # CASE 2 : target_category_id → DigitalOcean path (unchanged logic)
+# #         # ------------------------------------------------------------------
+#         if target_category_id:
+#             client = get_spaces_client()
+#             base_prefix = "faceswap/target/"
+#             resp = client.list_objects_v2(
+#                 Bucket=DO_SPACES_BUCKET, Prefix=base_prefix, Delimiter="/"
+#             )
+            
+#             # Extract categories from the CommonPrefixes
+#             categories = [p["Prefix"].split("/")[2] for p in resp.get("CommonPrefixes", [])]
+
+#             target_url = None
+            
+#             # --- FIX STARTS HERE ---
+#             for category in categories:
+#                 original_prefix = f"faceswap/target/{category}/original/"
+#                 thumb_prefix = f"faceswap/target/{category}/thumb/" # Keep for file list check (optional but safe)
+                
+#                 # List objects in original/
+#                 original_objects = client.list_objects_v2(
+#                     Bucket=DO_SPACES_BUCKET, Prefix=original_prefix
+#                 ).get("Contents", [])
+
+#                 # List objects in thumb/ (optional: for the old code's extra check)
+#                 thumb_objects = client.list_objects_v2(
+#                     Bucket=DO_SPACES_BUCKET, Prefix=thumb_prefix
+#                 ).get("Contents", [])
+                
+#                 # Extract only the filenames and filter for .png
+#                 original_filenames = sorted([
+#                     obj["Key"].split("/")[-1] for obj in original_objects 
+#                     if obj["Key"].split("/")[-1].endswith(".png")
+#                 ])
+#                 thumb_filenames = [
+#                     obj["Key"].split("/")[-1] for obj in thumb_objects
+#                 ]
+
+#                 # Replicate the old indexing logic based on sorted filenames
+#                 for idx, filename in enumerate(original_filenames, start=1):
+#                     cid = f"{category.lower()}image_{idx}"
+
+#                     # Optional: Replicate the thumb file check for 100% parity
+#                     # if filename in thumb_filenames and cid == target_category_id:
+#                     # Simpler check just on the ID, assuming thumb files are present
+#                     if cid == target_category_id:
+#                         # Construct the final target URL using the full prefix and the filename
+#                         target_url = f"{DO_SPACES_ENDPOINT}/{DO_SPACES_BUCKET}/{original_prefix}{filename}"
+#                         break
+                
+#                 if target_url:
+#                     break
+#             # --- FIX ENDS HERE ---
+
+#             if not target_url:
+#                 raise HTTPException(404, "Target categoryId not found")
+# #         # ------------------------------------------------------------------
+# #         # DOWNLOAD TARGET IMAGE
+# #         # ------------------------------------------------------------------
+#         async with httpx.AsyncClient(timeout=30.0) as client:
+#             response = await client.get(target_url)
+#             response.raise_for_status()
+#             tgt_bytes = response.content
+
+#         src_bgr = cv2.imdecode(np.frombuffer(src_bytes, np.uint8), cv2.IMREAD_COLOR)
+#         tgt_bgr = cv2.imdecode(np.frombuffer(tgt_bytes, np.uint8), cv2.IMREAD_COLOR)
+
+#         if src_bgr is None or tgt_bgr is None:
+#             raise HTTPException(400, "Invalid image data")
+
+#         src_rgb = cv2.cvtColor(src_bgr, cv2.COLOR_BGR2RGB)
+#         tgt_rgb = cv2.cvtColor(tgt_bgr, cv2.COLOR_BGR2RGB)
+
+#         # ------------------------------------------------------------------
+#         # FACE SWAP EXECUTION
+#         # ------------------------------------------------------------------
+#         final_img, final_path, err = face_swap_and_enhance(src_rgb, tgt_rgb)
+        
+#         # #--------------------Version 2.0 ----------------------------------------#
+#         # final_img, final_path, err = enhanced_face_swap_and_enhance(src_rgb, tgt_rgb)
+#         # #--------------------Version 2.0 ----------------------------------------#
+        
+#         if err:
+#             raise HTTPException(500, err)
+
+#         with open(final_path, "rb") as f:
+#             result_bytes = f.read()
+
+#         result_key = f"faceswap/result/{uuid.uuid4().hex}_enhanced.png"
+#         result_url = upload_to_spaces(result_bytes, result_key)
+#         # -------------------------------------------------
+#         # COMPRESS IMAGE (2–3 MB target)
+#         # -------------------------------------------------
+#         compressed_bytes = compress_image(
+#             image_bytes=result_bytes,
+#             max_size=(1280, 1280),
+#             quality=72
+#         )
+        
+#         compressed_key = f"faceswap/result/{uuid.uuid4().hex}_enhanced_compressed.jpg"
+#         compressed_url = upload_to_spaces(
+#             compressed_bytes,
+#             compressed_key,
+#             content_type="image/jpeg"
+#         )
+#         end_time = datetime.utcnow()
+#         response_time_ms = (end_time - start_time).total_seconds() * 1000
+
+#         if database is not None:
+#             log_entry = {
+#                 "endpoint": "/face-swap",
+#                 "status": "success",
+#                 "response_time_ms": response_time_ms,
+#                 "timestamp": end_time
+#             }
+#             if appname:
+#                 log_entry["appname"] = appname
+#             await database.api_logs.insert_one(log_entry)
+
+
+#         return {
+#             "result_key": result_key,
+#             "result_url": result_url,
+#             "Compressed_Image_URL": compressed_url
+#         }
+        
+#     except Exception as e:
+#         end_time = datetime.utcnow()
+#         response_time_ms = (end_time - start_time).total_seconds() * 1000
+
+#         if database is not None:
+#             log_entry = {
+#                 "endpoint": "/face-swap",
+#                 "status": "fail",
+#                 "response_time_ms": response_time_ms,
+#                 "timestamp": end_time,
+#                 "error": str(e)
+#             }
+#             if appname:
+#                 log_entry["appname"] = appname
+#             await database.api_logs.insert_one(log_entry)
+
+#         raise HTTPException(500, f"Face swap failed: {str(e)}")
+
+# @fastapi_app.get("/preview/{result_key:path}")
+# async def preview_result(result_key: str):
+#     try:
+#         img_bytes = download_from_spaces(result_key)
+#     except Exception:
+#         raise HTTPException(status_code=404, detail="Result not found")
+#     return Response(
+#         content=img_bytes,
+#         media_type="image/png",
+#         headers={"Content-Disposition": "inline; filename=result.png"}
+#     )
+    
+# @fastapi_app.post("/multi-face-swap", dependencies=[Depends(verify_token)])
+# async def multi_face_swap_api(
+#     source_image: UploadFile = File(...),
+#     target_image: UploadFile = File(...)
+# ):
+#     start_time = datetime.utcnow()
+
+#     try:
+#         # -----------------------------
+#         # Read images
+#         # -----------------------------
+#         src_bytes = await source_image.read()
+#         tgt_bytes = await target_image.read()
+
+#         src_bgr = cv2.imdecode(np.frombuffer(src_bytes, np.uint8), cv2.IMREAD_COLOR)
+#         tgt_bgr = cv2.imdecode(np.frombuffer(tgt_bytes, np.uint8), cv2.IMREAD_COLOR)
+
+#         if src_bgr is None or tgt_bgr is None:
+#             raise HTTPException(400, "Invalid image data")
+
+#         src_rgb = cv2.cvtColor(src_bgr, cv2.COLOR_BGR2RGB)
+#         tgt_rgb = cv2.cvtColor(tgt_bgr, cv2.COLOR_BGR2RGB)
+
+#         # -----------------------------
+#         # Multi-face swap
+#         # -----------------------------
+#         swapped_rgb = multi_face_swap(src_rgb, tgt_rgb)
+
+#         # -----------------------------
+#         # 🔥 MANDATORY ENHANCEMENT
+#         # -----------------------------
+#         final_rgb = mandatory_enhancement(swapped_rgb)
+
+#         final_bgr = cv2.cvtColor(final_rgb, cv2.COLOR_RGB2BGR)
+
+#         # -----------------------------
+#         # Save temp result
+#         # -----------------------------
+#         temp_dir = tempfile.mkdtemp(prefix="multi_faceswap_")
+#         result_path = os.path.join(temp_dir, "result.png")
+#         cv2.imwrite(result_path, final_bgr)
+
+#         with open(result_path, "rb") as f:
+#             result_bytes = f.read()
+
+#         # -----------------------------
+#         # Upload
+#         # -----------------------------
+#         result_key = f"faceswap/multi/{uuid.uuid4().hex}.png"
+#         result_url = upload_to_spaces(
+#             result_bytes,
+#             result_key,
+#             content_type="image/png"
+#         )
+
+#         return {
+#             "result_key": result_key,
+#             "result_url": result_url
+#         }
+
+#     except Exception as e:
+#         raise HTTPException(status_code=500, detail=str(e))
+
+
+# @fastapi_app.post("/face-swap-couple", dependencies=[Depends(verify_token)])
+# async def face_swap_api(
+#     image1: UploadFile = File(...),
+#     image2: Optional[UploadFile] = File(None),
+#     target_category_id: str = Form(None),
+#     new_category_id: str = Form(None),
+#     user_id: Optional[str] = Form(None),
+#     appname: Optional[str] = Form(None),
+#     credentials: HTTPAuthorizationCredentials = Security(security)
+# ):
+#     """
+#     Production-ready face swap endpoint supporting:
+#     - Multiple source images (image1 + optional image2)
+#     - Gender-based pairing
+#     - Merged faces from multiple sources
+#     - Mandatory CodeFormer enhancement
+#     """
+#     start_time = datetime.utcnow()
+    
+#     try:
+#         # -----------------------------
+#         # Validate input
+#         # -----------------------------
+#         if target_category_id == "":
+#             target_category_id = None
+#         if new_category_id == "":
+#             new_category_id = None
+#         if user_id == "":
+#             user_id = None
+
+#         media_clicks_collection = get_media_clicks_collection(appname)
+
+#         if target_category_id and new_category_id:
+#             raise HTTPException(400, "Provide only one of new_category_id or target_category_id.")
+#         if not target_category_id and not new_category_id:
+#             raise HTTPException(400, "Either new_category_id or target_category_id is required.")
+
+#         logger.info(f"[FaceSwap] Incoming request → target_category_id={target_category_id}, new_category_id={new_category_id}, user_id={user_id}")
+
+#         # -----------------------------
+#         # Read source images
+#         # -----------------------------
+#         src_images = []
+#         img1_bytes = await image1.read()
+#         src1 = cv2.imdecode(np.frombuffer(img1_bytes, np.uint8), cv2.IMREAD_COLOR)
+#         if src1 is None:
+#             raise HTTPException(400, "Invalid image1 data")
+#         src_images.append(cv2.cvtColor(src1, cv2.COLOR_BGR2RGB))
+
+#         if image2:
+#             img2_bytes = await image2.read()
+#             src2 = cv2.imdecode(np.frombuffer(img2_bytes, np.uint8), cv2.IMREAD_COLOR)
+#             if src2 is not None:
+#                 src_images.append(cv2.cvtColor(src2, cv2.COLOR_BGR2RGB))
+
+#         # -----------------------------
+#         # Resolve target image
+#         # -----------------------------
+#         target_url = None
+#         if new_category_id:
+#             doc = await subcategories_col.find_one({
+#                 "asset_images._id": ObjectId(new_category_id)
+#             })
+
+#             if not doc:
+#                 raise HTTPException(404, "Asset image not found in database")
+
+#             asset = next(
+#                 (img for img in doc["asset_images"] if str(img["_id"]) == new_category_id),
+#                 None
+#             )
+
+#             if not asset:
+#                 raise HTTPException(404, "Asset image URL not found")
+
+#             target_url = asset["url"]
+#             subcategory_oid = doc["_id"]
+
+#             if user_id and media_clicks_collection is not None:
+#                 try:
+#                     user_id_clean = user_id.strip()
+#                     if not user_id_clean:
+#                         raise ValueError("user_id cannot be empty")
+#                     try:
+#                         user_oid = ObjectId(user_id_clean)
+#                     except (InvalidId, ValueError):
+#                         logger.error(f"Invalid user_id format: {user_id_clean}")
+#                         raise ValueError(f"Invalid user_id format: {user_id_clean}")
+
+#                     now = datetime.utcnow()
+
+#                     # Step 1: ensure root document exists
+#                     await media_clicks_collection.update_one(
+#                         {"userId": user_oid},
+#                         {
+#                             "$setOnInsert": {
+#                                 "userId": user_oid,
+#                                 "createdAt": now,
+#                                 "ai_edit_complete": 0,
+#                                 "ai_edit_daily_count": []
+#                             }
+#                         },
+#                         upsert=True
+#                     )
+
+#                     # Step 2: handle daily usage (binary, no duplicates)
+#                     doc = await media_clicks_collection.find_one(
+#                         {"userId": user_oid},
+#                         {"ai_edit_daily_count": 1}
+#                     )
+
+#                     daily_entries = doc.get("ai_edit_daily_count", []) if doc else []
+
+#                     today_date = datetime(now.year, now.month, now.day)
+
+#                     daily_map = {}
+#                     for entry in daily_entries:
+#                         d = entry["date"]
+#                         if isinstance(d, datetime):
+#                             d = datetime(d.year, d.month, d.day)
+#                         daily_map[d] = entry["count"]
+
+#                     last_date = max(daily_map.keys()) if daily_map else None
+
+#                     if last_date != today_date:
+#                         daily_map[today_date] = 1
+
+#                     final_daily_entries = [
+#                         {"date": d, "count": daily_map[d]}
+#                         for d in sorted(daily_map.keys())
+#                     ]
+
+#                     final_daily_entries = final_daily_entries[-32:]
+
+#                     await media_clicks_collection.update_one(
+#                         {"userId": user_oid},
+#                         {
+#                             "$set": {
+#                                 "ai_edit_daily_count": final_daily_entries,
+#                                 "updatedAt": now
+#                             }
+#                         }
+#                     )
+
+#                     # Step 3: try updating existing subCategory
+#                     update_result = await media_clicks_collection.update_one(
+#                         {
+#                             "userId": user_oid,
+#                             "subCategories.subCategoryId": subcategory_oid
+#                         },
+#                         {
+#                             "$inc": {
+#                                 "subCategories.$.click_count": 1,
+#                                 "ai_edit_complete": 1
+#                             },
+#                             "$set": {
+#                                 "subCategories.$.lastClickedAt": now,
+#                                 "ai_edit_last_date": now,
+#                                 "updatedAt": now
+#                             }
+#                         }
+#                     )
+
+#                     # Step 4: push subCategory if missing
+#                     if update_result.matched_count == 0:
+#                         await media_clicks_collection.update_one(
+#                             {"userId": user_oid},
+#                             {
+#                                 "$inc": {
+#                                     "ai_edit_complete": 1
+#                                 },
+#                                 "$set": {
+#                                     "ai_edit_last_date": now,
+#                                     "updatedAt": now
+#                                 },
+#                                 "$push": {
+#                                     "subCategories": {
+#                                         "subCategoryId": subcategory_oid,
+#                                         "click_count": 1,
+#                                         "lastClickedAt": now
+#                                     }
+#                                 }
+#                             }
+#                         )
+
+#                     # Step 5: sort subCategories by lastClickedAt (ascending)
+#                     user_doc = await media_clicks_collection.find_one({"userId": user_oid})
+#                     if user_doc and "subCategories" in user_doc:
+#                         subcategories = user_doc["subCategories"]
+#                         subcategories_sorted = sorted(
+#                             subcategories,
+#                             key=lambda x: x.get("lastClickedAt") if x.get("lastClickedAt") is not None else datetime.min
+#                         )
+#                         await media_clicks_collection.update_one(
+#                             {"userId": user_oid},
+#                             {
+#                                 "$set": {
+#                                     "subCategories": subcategories_sorted,
+#                                     "updatedAt": now
+#                                 }
+#                             }
+#                         )
+
+#                     logger.info(
+#                         "[MEDIA_CLICK] user=%s subCategory=%s ai_edit_complete++ daily_tracked",
+#                         user_id,
+#                         str(subcategory_oid)
+#                     )
+
+#                 except Exception as media_err:
+#                     logger.error(f"MEDIA_CLICK ERROR: {media_err}")
+#             elif user_id and media_clicks_collection is None:
+#                 logger.warning("Media clicks collection unavailable; skipping media click tracking")
+
+#         if target_category_id:
+#             client = get_spaces_client()
+#             base_prefix = "faceswap/target/"
+#             resp = client.list_objects_v2(
+#                 Bucket=DO_SPACES_BUCKET, Prefix=base_prefix, Delimiter="/"
+#             )
+
+#             categories = [p["Prefix"].split("/")[2] for p in resp.get("CommonPrefixes", [])]
+
+#             for category in categories:
+#                 original_prefix = f"faceswap/target/{category}/original/"
+#                 thumb_prefix = f"faceswap/target/{category}/thumb/"
+
+#                 original_objects = client.list_objects_v2(
+#                     Bucket=DO_SPACES_BUCKET, Prefix=original_prefix
+#                 ).get("Contents", [])
+
+#                 thumb_objects = client.list_objects_v2(
+#                     Bucket=DO_SPACES_BUCKET, Prefix=thumb_prefix
+#                 ).get("Contents", [])
+
+#                 original_filenames = sorted([
+#                     obj["Key"].split("/")[-1] for obj in original_objects
+#                     if obj["Key"].split("/")[-1].endswith(".png")
+#                 ])
+
+#                 for idx, filename in enumerate(original_filenames, start=1):
+#                     cid = f"{category.lower()}image_{idx}"
+#                     if cid == target_category_id:
+#                         target_url = f"{DO_SPACES_ENDPOINT}/{DO_SPACES_BUCKET}/{original_prefix}{filename}"
+#                         break
+
+#                 if target_url:
+#                     break
+
+#             if not target_url:
+#                 raise HTTPException(404, "Target categoryId not found")
+
+#         async with httpx.AsyncClient(timeout=30.0) as client:
+#             response = await client.get(target_url)
+#             response.raise_for_status()
+#             tgt_bytes = response.content
+
+#         tgt_bgr = cv2.imdecode(np.frombuffer(tgt_bytes, np.uint8), cv2.IMREAD_COLOR)
+#         if tgt_bgr is None:
+#             raise HTTPException(400, "Invalid target image data")
+
+#         # -----------------------------
+#         # Merge all source faces
+#         # -----------------------------
+#         all_src_faces = []
+#         for img in src_images:
+#             faces = face_analysis_app.get(cv2.cvtColor(img, cv2.COLOR_RGB2BGR))
+#             all_src_faces.extend(faces)
+
+#         if not all_src_faces:
+#             raise HTTPException(400, "No faces detected in source images")
+
+#         tgt_faces = face_analysis_app.get(tgt_bgr)
+#         if not tgt_faces:
+#             raise HTTPException(400, "No faces detected in target image")
+
+#         # -----------------------------
+#         # Gender-based pairing
+#         # -----------------------------
+#         def face_sort_key(face):
+#             x1, y1, x2, y2 = face.bbox
+#             area = (x2 - x1) * (y2 - y1)
+#             cx = (x1 + x2) / 2
+#             return (-area, cx)
+
+#         # Separate by gender
+#         src_male = sorted([f for f in all_src_faces if f.gender == 1], key=face_sort_key)
+#         src_female = sorted([f for f in all_src_faces if f.gender == 0], key=face_sort_key)
+#         tgt_male = sorted([f for f in tgt_faces if f.gender == 1], key=face_sort_key)
+#         tgt_female = sorted([f for f in tgt_faces if f.gender == 0], key=face_sort_key)
+
+#         pairs = []
+#         for s, t in zip(src_male, tgt_male):
+#             pairs.append((s, t))
+#         for s, t in zip(src_female, tgt_female):
+#             pairs.append((s, t))
+
+#         # fallback if gender mismatch
+#         if not pairs:
+#             src_all = sorted(all_src_faces, key=face_sort_key)
+#             tgt_all = sorted(tgt_faces, key=face_sort_key)
+#             pairs = list(zip(src_all, tgt_all))
+
+#         # -----------------------------
+#         # Perform face swap
+#         # -----------------------------
+#         with swap_lock:
+#             result_img = tgt_bgr.copy()
+#             for src_face, _ in pairs:
+#                 if face_analysis_app is None:
+#                     raise HTTPException(status_code=500, detail="Face analysis models not initialized. Please ensure models are downloaded.")
+#                 current_faces = sorted(face_analysis_app.get(result_img), key=face_sort_key)
+#                 candidates = [f for f in current_faces if f.gender == src_face.gender] or current_faces
+#                 target_face = candidates[0]
+#                 if swapper is None:
+#                     raise HTTPException(status_code=500, detail="Face swap models not initialized. Please ensure models are downloaded.")
+#                 result_img = swapper.get(result_img, target_face, src_face, paste_back=True)
+
+#         result_rgb = cv2.cvtColor(result_img, cv2.COLOR_BGR2RGB)
+
+#         # -----------------------------
+#         # Mandatory enhancement
+#         # -----------------------------
+#         enhanced_rgb = mandatory_enhancement(result_rgb)
+#         enhanced_bgr = cv2.cvtColor(enhanced_rgb, cv2.COLOR_RGB2BGR)
+
+#         # -----------------------------
+#         # Save, upload, compress
+#         # -----------------------------
+#         temp_dir = tempfile.mkdtemp(prefix="faceswap_")
+#         final_path = os.path.join(temp_dir, "result.png")
+#         cv2.imwrite(final_path, enhanced_bgr)
+
+#         with open(final_path, "rb") as f:
+#             result_bytes = f.read()
+
+#         result_key = f"faceswap/result/{uuid.uuid4().hex}_enhanced.png"
+#         result_url = upload_to_spaces(result_bytes, result_key)
+
+#         compressed_bytes = compress_image(result_bytes, max_size=(1280, 1280), quality=72)
+#         compressed_key = f"faceswap/result/{uuid.uuid4().hex}_enhanced_compressed.jpg"
+#         compressed_url = upload_to_spaces(compressed_bytes, compressed_key, content_type="image/jpeg")
+
+#         # -----------------------------
+#         # Log API usage
+#         # -----------------------------
+#         end_time = datetime.utcnow()
+#         response_time_ms = (end_time - start_time).total_seconds() * 1000
+#         if database is not None:
+#             log_entry = {
+#                 "endpoint": "/face-swap-couple",
+#                 "status": "success",
+#                 "response_time_ms": response_time_ms,
+#                 "timestamp": end_time
+#             }
+#             if appname:
+#                 log_entry["appname"] = appname
+#             await database.api_logs.insert_one(log_entry)
+
+#         return {
+#             "result_key": result_key,
+#             "result_url": result_url,
+#             "compressed_url": compressed_url
+#         }
+
+#     except Exception as e:
+#         end_time = datetime.utcnow()
+#         response_time_ms = (end_time - start_time).total_seconds() * 1000
+#         if database is not None:
+#             log_entry = {
+#                 "endpoint": "/face-swap-couple",
+#                 "status": "fail",
+#                 "response_time_ms": response_time_ms,
+#                 "timestamp": end_time,
+#                 "error": str(e)
+#             }
+#             if appname:
+#                 log_entry["appname"] = appname
+#             await database.api_logs.insert_one(log_entry)
+#         raise HTTPException(500, f"Face swap failed: {str(e)}")
+
+
+
+
+# # --------------------- Mount Gradio ---------------------
+
+# multi_faceswap_app = build_multi_faceswap_gradio()
+# fastapi_app = mount_gradio_app(
+#     fastapi_app,
+#     multi_faceswap_app,
+#     path="/gradio-couple-faceswap"
+# )
+
+
+
+# if __name__ == "__main__":
+#     uvicorn.run(fastapi_app, host="0.0.0.0", port=7860)
+
+
 import os
 os.environ["OMP_NUM_THREADS"] = "1"
 import shutil
@@ -1483,13 +2902,15 @@ COLLAGE_MAKER_DB_URL = os.getenv("COLLAGE_MAKER_DB_URL")
 collage_maker_client = None
 collage_maker_db = None
 collage_media_clicks_col = None
+collage_subcategories_col = None
 if COLLAGE_MAKER_DB_URL:
     try:
         collage_maker_client = AsyncIOMotorClient(COLLAGE_MAKER_DB_URL)
         collage_maker_db = collage_maker_client.adminPanel
         collage_media_clicks_col = collage_maker_db.media_clicks
+        collage_subcategories_col = collage_maker_db.subcategories
     except Exception as e:
-        logger.warning(f"MongoDB ai-enhancer connection failed (optional): {e}")
+        logger.warning(f"MongoDB collage-maker connection failed (optional): {e}")
         
 # AI Enhancer DB (optional)
 
@@ -1671,8 +3092,8 @@ def get_app_db_collections(appname: Optional[str] = None):
         app = appname.strip().lower()
 
         if app == "collage-maker":
-            if collage_media_clicks_col is not None and subcategories_col is not None:
-                return collage_media_clicks_col, subcategories_col
+            if collage_media_clicks_col is not None and collage_subcategories_col is not None:
+                return collage_media_clicks_col, collage_subcategories_col
             logger.warning("Collage-maker DB not configured, falling back to admin")
 
         elif app == "ai-enhancer":
@@ -2828,5 +4249,3 @@ fastapi_app = mount_gradio_app(
 
 if __name__ == "__main__":
     uvicorn.run(fastapi_app, host="0.0.0.0", port=7860)
-
-