# File 1: Dockerfile
FROM python:3.9-slim

# Set working directory
WORKDIR /app

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV STREAMLIT_SERVER_HEADLESS=true
ENV STREAMLIT_SERVER_PORT=7860
ENV STREAMLIT_SERVER_ADDRESS=0.0.0.0
ENV STREAMLIT_BROWSER_GATHER_USAGE_STATS=false

# Install system dependencies for Chrome and Selenium
RUN apt-get update && apt-get install -y \
    wget \
    gnupg \
    unzip \
    curl \
    xvfb \
    chromium \
    chromium-driver \
    && rm -rf /var/lib/apt/lists/*

# Set Chrome options for headless mode
ENV CHROME_BIN=/usr/bin/chromium
ENV CHROMEDRIVER_PATH=/usr/bin/chromedriver

# Copy requirements first for better caching
COPY requirements.txt .

# Install Python dependencies
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# Copy application files
COPY . .

# Create streamlit config directory
RUN mkdir -p /app/.streamlit

# Expose port
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:7860/_stcore/health || exit 1

# Run the application
CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0", "--server.headless=true"]