FROM python:3.9-slim

RUN apt-get update && apt-get install -y \
    libgl1 \
    libglib2.0-0 \
    wget \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

RUN useradd -m -u 1000 user
RUN mkdir -p /home/user/.deepface/weights && \
    mkdir -p /app/faces_db && \
    mkdir -p /app/data && \
    mkdir -p /app/core /app/api /app/services /app/static /app/templates && \
    chown -R user:user /app && \
    chown -R user:user /home/user/.deepface

# Pre-download SOTA weights (ArcFace, Facenet512, & RetinaFace) to ensure zero-lag startup
RUN wget https://github.com/serengil/deepface_models/releases/download/v1.0/arcface_weights.h5 \
    -O /home/user/.deepface/weights/arcface_weights.h5 && \
    wget https://github.com/serengil/deepface_models/releases/download/v1.0/facenet512_weights.h5 \
    -O /home/user/.deepface/weights/facenet512_weights.h5 && \
    wget https://github.com/serengil/deepface_models/releases/download/v1.0/retinaface.h5 \
    -O /home/user/.deepface/weights/retinaface.h5

USER user
ENV PATH="/home/user/.local/bin:$PATH"

COPY --chown=user requirements.txt .

# 1. Install base libraries
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# 2. Install DeepFace helpers
RUN pip install --no-cache-dir gdown fire tqdm Pillow requests Flask gunicorn

# 3. CRITICAL: Install deepface and retina-face without pulling conflicting deps
RUN pip install --no-cache-dir retina-face deepface --no-deps

COPY --chown=user . .

# Ensure all subdirectories are treated as packages
RUN touch core/__init__.py api/__init__.py services/__init__.py

# Run FastAPI app
CMD ["python", "app.py"]