FROM python:3.10-slim

# Install system dependencies required for dlib and OpenCV
RUN apt-get update && apt-get install -y \
    build-essential \
    cmake \
    libopenblas-dev \
    liblapack-dev \
    libx11-dev \
    libgtk-3-dev \
    python3-dev \
    libboost-all-dev \
    libgl1-mesa-glx \
    libglib2.0-0 \
    libsm6 \
    libxext6 \
    libxrender-dev \
    libgomp1 \
    pkg-config \
    wget \
    && rm -rf /var/lib/apt/lists/*

# Set working directory
WORKDIR /app

# Copy requirements file
COPY requirements.txt .

# Upgrade pip and install build tools
RUN pip install --no-cache-dir --upgrade pip wheel setuptools

# CRITICAL: Install cmake Python module first
RUN pip install --no-cache-dir cmake

# Set environment variable to disable GUI support for dlib
ENV DLIB_NO_GUI_SUPPORT=1

# Install dlib (builds from source)
RUN pip install --no-cache-dir dlib

# Install remaining Python packages
RUN pip install --no-cache-dir \
    fastapi==0.104.1 \
    uvicorn[standard]==0.24.0 \
    numpy==1.24.3 \
    opencv-python-headless==4.8.1.78 \
    mediapipe==0.10.7 \
    joblib==1.3.2 \
    python-multipart==0.0.6 \
    websockets==11.0.2 \
    Pillow==10.0.1 \
    scikit-learn==1.3.0 \
    imutils==0.5.4

# Copy application code
COPY . .

# Expose port
EXPOSE 8000

# Run the application
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]