# Dockerfile for Slack URL Summarizer Bot - Hugging Face Spaces
# Hugging Face Spaces requires port 7860

# --- Stage 1: Builder ---
FROM python:3.12-slim AS builder

WORKDIR /app

# Install uv package manager
RUN pip install uv

# Create virtual environment
RUN uv venv /opt/venv

# Copy dependency files
COPY pyproject.toml uv.lock requirements.txt ./

# Install dependencies
RUN . /opt/venv/bin/activate && uv pip install -r requirements.txt --no-cache

# --- Stage 2: Final Image ---
FROM python:3.12-slim

# Install curl for healthcheck
RUN apt-get update && apt-get install -y --no-install-recommends curl && rm -rf /var/lib/apt/lists/*

# Create non-privileged user
RUN useradd --create-home --shell /bin/bash appuser

WORKDIR /home/appuser/app

# Copy virtual environment from builder
COPY --from=builder --chown=appuser:appuser /opt/venv /opt/venv

# Copy application code
COPY --chown=appuser:appuser main.py .

# Switch to non-privileged user
USER appuser

# Set environment variables
# Hugging Face Spaces requires port 7860
ENV PATH="/opt/venv/bin:$PATH"
ENV PYTHONUNBUFFERED=1
ENV PORT=7860

# Expose Hugging Face Spaces required port
EXPOSE 7860

# --- Runtime Configuration ---
# Required environment variables (set in HF Space Secrets):
# - SLACK_BOT_TOKEN
# - SLACK_SIGNING_SECRET
# - AZURE_OPENAI_ENDPOINT
# - AZURE_OPENAI_API_KEY

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

# Run the application on port 7860
CMD ["uvicorn", "main:api", "--host", "0.0.0.0", "--port", "7860"]