# ============================================================
# InnerVoice — Hugging Face Spaces Docker Deployment
# ============================================================

# ---------- Stage 1: Build the Next.js frontend ----------
FROM node:20-slim AS frontend_builder

WORKDIR /build/frontend
COPY frontend/package*.json ./
RUN npm ci --no-audit --no-fund
COPY frontend/ ./
RUN npm run build

# ---------- Stage 2: Final runtime ----------
FROM python:3.10-slim

# Copy Node.js binaries from official node image (no apt needed)
COPY --from=node:20-slim /usr/local/bin /usr/local/bin
COPY --from=node:20-slim /usr/local/lib/node_modules /usr/local/lib/node_modules

# Install only system-level deps
RUN apt-get update && apt-get install -y --no-install-recommends \
    ffmpeg \
    libsndfile1 \
    build-essential \
    git \
    curl \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# HF Spaces user
RUN useradd -m -u 1000 user
ENV HOME=/home/user
ENV PATH=$HOME/.local/bin:$PATH
WORKDIR $HOME/app
RUN chown -R user:user $HOME
USER user

# Python deps (CPU-only PyTorch)
COPY --chown=user:user backend/requirements.txt ./backend/
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir \
    -r backend/requirements.txt \
    --extra-index-url https://download.pytorch.org/whl/cpu

# Copy pre-built frontend from Stage 1
COPY --from=frontend_builder --chown=user:user /build/frontend/.next ./frontend/.next
COPY --from=frontend_builder --chown=user:user /build/frontend/node_modules ./frontend/node_modules
COPY --from=frontend_builder --chown=user:user /build/frontend/package.json ./frontend/package.json
COPY --from=frontend_builder --chown=user:user /build/frontend/public ./frontend/public
COPY --from=frontend_builder --chown=user:user /build/frontend/next.config.mjs ./frontend/next.config.mjs

# Copy backend
COPY --chown=user:user backend/ ./backend/

# Entrypoint
COPY --chown=user:user start.sh ./
RUN chmod +x start.sh

EXPOSE 7860
CMD ["./start.sh"]