# Multi-stage Dockerfile for optimized production builds
FROM python:3.11-slim as base

# Set environment variables
ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1 \
    POETRY_VERSION=1.6.1

# Install system dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    ffmpeg \
    libmagic1 \
    libpq-dev \
    pkg-config \
    && rm -rf /var/lib/apt/lists/*

# Install Poetry
RUN pip install poetry==$POETRY_VERSION

# Configure Poetry
ENV POETRY_NO_INTERACTION=1 \
    POETRY_VENV_IN_PROJECT=1 \
    POETRY_CACHE_DIR=/tmp/poetry_cache

WORKDIR /app

# Copy dependency files
COPY pyproject.toml poetry.lock ./

# Development stage
FROM base as development

# Install dependencies including dev dependencies
RUN poetry install --with dev && rm -rf $POETRY_CACHE_DIR

# Copy source code
COPY . .

# Set development environment
ENV PYTHONPATH=/app
ENV DEBUG=true

# Expose ports
EXPOSE 15100 9090

# Default command for development
CMD ["poetry", "run", "python", "-m", "app"]

# Production dependencies stage
FROM base as deps

# Install only production dependencies
RUN poetry install --only=main && rm -rf $POETRY_CACHE_DIR

# Production stage
FROM python:3.11-slim as production

# Install runtime dependencies only
RUN apt-get update && apt-get install -y \
    curl \
    ffmpeg \
    libmagic1 \
    libpq5 \
    && rm -rf /var/lib/apt/lists/* \
    && apt-get clean

# Create non-root user
RUN groupadd -r appuser && useradd -r -g appuser appuser

# Set working directory
WORKDIR /app

# Copy virtual environment from deps stage
COPY --from=deps /app/.venv /app/.venv

# Add virtual environment to PATH
ENV PATH="/app/.venv/bin:$PATH"

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

# Create necessary directories
RUN mkdir -p /app/data /app/logs && \
    chown -R appuser:appuser /app/data /app/logs

# Set production environment
ENV PYTHONPATH=/app
ENV DEBUG=false

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
    CMD curl -f http://localhost:15100/health || exit 1

# Switch to non-root user
USER appuser

# Expose ports
EXPOSE 15100 9090

# Default command
CMD ["python", "-m", "app"]

# Testing stage
FROM development as testing

# Install test dependencies
RUN poetry install --with dev,test

# Run tests
RUN poetry run pytest tests/ --cov=app --cov-report=term-missing

# Security scanning stage
FROM production as security

# Switch back to root for security scanning
USER root

# Install security tools
RUN pip install safety bandit

# Run security checks
RUN safety check
RUN bandit -r app/ -f json -o security-report.json || true

# Switch back to app user
USER appuser