# =============================================================
# Dockerfile — LangChain CSV Analysis Starter
# Exposes the FastAPI service on port 8000.
#
# Build:
#   docker build -t demia-csv-analysis .
#
# Run (API):
#   docker run -p 8000:8000 \
#     -e ANTHROPIC_API_KEY=sk-ant-... \
#     -v $(pwd)/data:/app/data \
#     demia-csv-analysis
#
# Run (CLI inside the container):
#   docker run --rm \
#     -e ANTHROPIC_API_KEY=sk-ant-... \
#     -v $(pwd)/data:/app/data \
#     demia-csv-analysis \
#     python scripts/run.py --csv data/demographics.csv \
#       --question "What is the average population?"
# =============================================================

# ---------- Build stage -----------------------------------------
FROM python:3.11-slim AS builder

WORKDIR /build

# Install build dependencies for packages with C extensions
RUN apt-get update && apt-get install -y --no-install-recommends \
        build-essential \
        gcc \
    && rm -rf /var/lib/apt/lists/*

COPY requirements.txt .
RUN pip install --upgrade pip \
    && pip install --no-cache-dir --prefix=/install -r requirements.txt

# ---------- Runtime stage ----------------------------------------
FROM python:3.11-slim AS runtime

WORKDIR /app

# Copy installed packages from builder
COPY --from=builder /install /usr/local

# Copy application source
COPY config/    config/
COPY src/       src/
COPY api/       api/
COPY app/       app/
COPY scripts/   scripts/
COPY data/      data/

# Create data directory for user-provided CSV files
RUN mkdir -p /app/data

# Non-root user for security
RUN useradd --create-home --shell /bin/bash appuser \
    && chown -R appuser:appuser /app
USER appuser

# Expose FastAPI port
EXPOSE 8000

# Health check (requires curl — install only if needed)
# HEALTHCHECK --interval=30s --timeout=5s --start-period=10s \
#     CMD curl -f http://localhost:8000/health || exit 1

# Default command: start the FastAPI server
CMD ["uvicorn", "api.main:app", "--host", "0.0.0.0", "--port", "8000"]
