# Stage 1: Build frontend
FROM --platform=$TARGETPLATFORM node:20-slim AS frontend-builder

WORKDIR /app/frontend

# Copy frontend package files
COPY frontend/package*.json ./

# Install dependencies
RUN npm ci

# Copy frontend source
COPY frontend/ ./

# Build frontend
RUN npm run build

# Stage 2: Python backend with nginx
FROM --platform=$TARGETPLATFORM python:3.11-slim-bookworm

# Faster, repeatable builds
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1

WORKDIR /app

COPY requirements.txt ./
RUN apt-get update && apt-get install -y --no-install-recommends \
        gcc g++ make libjpeg-dev zlib1g-dev git \
        # GPIO/NeoPixel support for DW LEDs
        python3-dev python3-pip \
        libgpiod2 libgpiod-dev \
        scons \
        systemd \
        # Nginx for serving frontend
        nginx \
        # Docker CLI for container self-restart/update
        ca-certificates curl gnupg \
    && pip install --upgrade pip \
    && pip install --no-cache-dir -r requirements.txt \
    # Install Docker CLI from official Docker repo
    && install -m 0755 -d /etc/apt/keyrings \
    && curl -fsSL https://download.docker.com/linux/debian/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg \
    && chmod a+r /etc/apt/keyrings/docker.gpg \
    && echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/debian bookworm stable" > /etc/apt/sources.list.d/docker.list \
    && apt-get update \
    && apt-get install -y --no-install-recommends docker-ce-cli docker-compose-plugin \
    && apt-get purge -y gcc g++ make scons \
    && rm -rf /var/lib/apt/lists/*

# Copy nginx configuration
COPY nginx.conf /etc/nginx/sites-available/default
RUN rm -f /etc/nginx/sites-enabled/default && \
    ln -s /etc/nginx/sites-available/default /etc/nginx/sites-enabled/default

# Copy backend code
COPY . .

# Copy built frontend from Stage 1
COPY --from=frontend-builder /app/static/dist ./static/dist

# Copy and set up startup script
COPY start.sh /start.sh
RUN chmod +x /start.sh

# Expose ports: 80 for frontend (nginx), 8080 for backend API
EXPOSE 80 8080

CMD ["/start.sh"]