# Multi-stage Docker build for Northern Thailand Ping River Monitor

# Build stage
FROM python:3.11-slim as builder

# Set working directory
WORKDIR /app

# Install build dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    gcc \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements and install Python dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir --user -r requirements.txt

# Production stage
FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Install runtime dependencies
RUN apt-get update && apt-get install -y \
    wget \
    curl \
    && rm -rf /var/lib/apt/lists/* \
    && groupadd -r appuser && useradd -r -g appuser appuser

# Copy Python packages from builder stage
COPY --from=builder /root/.local /root/.local

# Copy application code
COPY . .

# Create logs directory and set permissions
RUN mkdir -p logs && chown -R appuser:appuser /app

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV TZ=Asia/Bangkok
ENV PATH=/root/.local/bin:$PATH

# Switch to non-root user
USER appuser

# Health check for API mode
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import requests; requests.get('http://localhost:8000/health', timeout=5)" 2>/dev/null || exit 1

# Expose port for API
EXPOSE 8000

# Default command
CMD ["python", "run.py", "--web-api"]