# Optimized Dockerfile for HuggingFace Spaces
# Uses pre-built binaries and CPU-only PyTorch to reduce build time and memory

FROM python:3.10-slim

# Reduce memory usage during build
ENV MAKEFLAGS="-j1"
ENV MAX_JOBS=1
ENV PIP_NO_CACHE_DIR=1

WORKDIR /app

# Install system dependencies (minimal set)
RUN apt-get update && apt-get install -y --no-install-recommends \
    git \
    ffmpeg \
    libsm6 \
    libxext6 \
    libgl1 \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements
COPY requirements.txt .

# Install dependencies in optimal order (smallest to largest)
# This helps if build fails partway through

# 1. Basic tools
RUN pip install --no-cache-dir pip setuptools wheel -U

# 2. Lightweight packages
RUN pip install --no-cache-dir \
    pillow==10.0.0 \
    addict==2.4.0 \
    cachetools==5.3.3 \
    gdown==3.12.2

# 3. Flask
RUN pip install --no-cache-dir \
    flask==3.0.0 \
    flask-cors==4.0.0 \
    werkzeug==3.0.1

# 4. gRPC
RUN pip install --no-cache-dir \
    grpcio==1.63.0 \
    grpcio-tools==1.63.0

# 5. Install PyTorch CPU-only (much smaller, ~100MB vs 800MB)
RUN pip install --no-cache-dir \
    torch==2.1.0+cpu \
    torchvision==0.16.0+cpu \
    --index-url https://download.pytorch.org/whl/cpu

# 6. Install CLIP dependencies
RUN pip install --no-cache-dir ftfy regex tqdm

# 7. Install CLIP
RUN pip install --no-cache-dir git+https://github.com/openai/CLIP.git

# 8. Install face detection (use mediapipe instead of dlib to avoid compilation)
RUN pip install --no-cache-dir \
    mediapipe==0.10.9 \
    opencv-python-headless==4.8.1.78

# 9. Face alignment dependencies
RUN pip install --no-cache-dir \
    scipy \
    scikit-image \
    numba

# 10. Install face_alignment (without dlib dependency)
RUN pip install --no-cache-dir face_alignment==1.3.4

# 11. Install Gradio last
RUN pip install --no-cache-dir gradio==4.31.5

# Copy all application files
COPY . .

# Create necessary directories
RUN mkdir -p /app/models /app/input /app/output

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV GRADIO_SERVER_NAME=0.0.0.0
ENV GRADIO_SERVER_PORT=7860

# Expose port for Gradio
EXPOSE 7860

# Run Gradio app (HuggingFace Spaces expects this)
CMD ["python", "app.py"]