# Peikarband Platform - Production Dockerfile
# Multi-stage build for optimized image size and security

# Build arguments
ARG PYTHON_VERSION=3.11
ARG NODE_VERSION=20
ARG VERSION=latest
ARG BUILD_DATE

# ============================================
# Stage 1: Builder
# ============================================
FROM python:${PYTHON_VERSION}-slim AS builder

# Re-declare ARGs for this stage
ARG NODE_VERSION=20
ARG VERSION=latest
ARG BUILD_DATE

LABEL maintainer="Peikarband Team <dev@peikarband.ir>"
LABEL org.opencontainers.image.title="Peikarband Landing"
LABEL org.opencontainers.image.description="Peikarband hosting platform landing page"
LABEL org.opencontainers.image.version="${VERSION}"
LABEL org.opencontainers.image.created="${BUILD_DATE}"

WORKDIR /build

# Install build dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    g++ \
    make \
    curl \
    gnupg \
    ca-certificates \
    unzip \
    && rm -rf /var/lib/apt/lists/*

# Install Node.js (required for Reflex)
RUN curl -fsSL https://deb.nodesource.com/setup_${NODE_VERSION}.x | bash - \
    && apt-get install -y --no-install-recommends nodejs \
    && rm -rf /var/lib/apt/lists/*

# Install bun (required by Reflex for frontend build)
# Retry mechanism for network issues
RUN set -ex && \
    for i in 1 2 3 4 5; do \
        curl -fsSL https://bun.sh/install | bash && break || \
        (echo "Attempt $i failed, retrying in 5 seconds..." && sleep 5); \
    done || (echo "Failed to install bun after 5 attempts" && exit 1)

# Add bun to PATH
ENV PATH="/root/.bun/bin:${PATH}"

# Copy only requirements first (for better layer caching)
COPY requirements.txt .

# Install Python dependencies in user space
RUN pip install --no-cache-dir --upgrade pip setuptools wheel && \
    pip install --no-cache-dir --user -r requirements.txt

# Copy application code (excluding .dockerignore items)
COPY --chown=root:root . .

# Build and export Reflex app for production
# Export creates .web directory with frontend static files
# bun is now pre-installed, so reflex export won't try to download it
RUN python -m reflex export --no-zip

# Aggressive cleanup to reduce layer size
# NOTE: Keep .web directory - it contains frontend static files
RUN set -ex && \
    # Remove Python cache
    find /build -type d -name "__pycache__" -exec rm -rf {} + 2>/dev/null || true && \
    find /build -type f -name "*.pyc" -delete && \
    find /build -type f -name "*.pyo" -delete && \
    # Remove development files
    rm -rf /build/tests /build/docs /build/scripts && \
    rm -rf /build/.git /build/.github /build/.vscode && \
    rm -rf /build/venv /build/env && \
    # Remove node_modules but KEEP .web (frontend static files)
    rm -rf /build/node_modules && \
    # Remove large duplicate assets from root
    rm -f /build/*.gif /build/*.mp4 /build/*.mov 2>/dev/null || true && \
    # Keep only necessary configs
    find /build -type f -name "docker-compose*.yml" -delete && \
    find /build -type f -name "Makefile" -delete

# ============================================
# Stage 2: Runtime
# ============================================
FROM python:${PYTHON_VERSION}-slim

# Re-declare ARGs for this stage
ARG PYTHON_VERSION=3.11
ARG VERSION=latest
ARG BUILD_DATE

# Build info
ENV VERSION=${VERSION} \
    BUILD_DATE=${BUILD_DATE}

WORKDIR /app

# Install runtime dependencies only
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    ca-certificates \
    tini \
    && rm -rf /var/lib/apt/lists/* \
    && apt-get clean

# Install Node.js runtime
ARG NODE_VERSION=20
RUN curl -fsSL https://deb.nodesource.com/setup_${NODE_VERSION}.x | bash - \
    && apt-get install -y --no-install-recommends nodejs \
    && rm -rf /var/lib/apt/lists/* \
    && apt-get clean

# Create non-root user first
RUN groupadd -r -g 1000 peikarband && \
    useradd -r -u 1000 -g peikarband -m -s /bin/bash peikarband && \
    mkdir -p /app/logs /app/uploads /app/.reflex

# Copy Python dependencies from builder to user home
COPY --from=builder /root/.local /home/peikarband/.local

# Copy application code from builder
COPY --from=builder /build /app

# Fix ownership
RUN chown -R peikarband:peikarband /home/peikarband/.local /app

# Add version info (must be before USER switch)
RUN echo "${VERSION}" > /app/.version && \
    chown peikarband:peikarband /app/.version

# Security: Remove unnecessary setuid/setgid permissions
RUN find / -perm /6000 -type f -exec chmod a-s {} \; 2>/dev/null || true

# Set environment variables
ENV PATH=/home/peikarband/.local/bin:$PATH \
    PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PYTHONHASHSEED=random \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1 \
    REFLEX_ENV=prod \
    ENVIRONMENT=prod

# Switch to non-root user
USER peikarband

# Expose ports
EXPOSE 3000 8000

# Health check with better error handling
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
    CMD curl -f -s -o /dev/null -w "%{http_code}" http://localhost:8000/ping | grep -q "200" || exit 1

# Use tini as init system for proper signal handling
ENTRYPOINT ["/usr/bin/tini", "--"]

# Run application (both frontend and backend)
CMD ["python", "-m", "reflex", "run", "--env", "prod"]