# Stage 1: Build the Frontend
FROM node:20-slim AS frontend-builder
WORKDIR /app/frontend

# Install git as some npm dependencies may require it
RUN apt-get update && apt-get install -y git && rm -rf /var/lib/apt/lists/*

# Cache-buster to force fresh build: 2026-04-09_v3
ENV REBUILD_UI=4

COPY frontend/package*.json ./
RUN npm install
COPY frontend/ .
RUN npm run build

# Stage 2: Final Runtime
FROM python:3.11-slim

# Install system dependencies
RUN apt-get update && apt-get install -y \
    git \
    poppler-utils \
    tesseract-ocr \
    tesseract-ocr-sqi \
    ffmpeg \
    libgl1 \
    libglib2.0-0 \
    && rm -rf /var/lib/apt/lists/*

# Set up non-root user
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH
WORKDIR $HOME/app

# Copy and install Python dependencies (slim runtime only)
COPY --chown=user requirements-space.txt .
RUN pip install --no-cache-dir --upgrade -r requirements-space.txt

# Pre-download Whisper model to speed up first use
RUN python -c "import whisper; whisper.load_model('small')"

# Copy pre-built frontend
COPY --chown=user --from=frontend-builder /app/frontend/dist ./frontend/dist

# Copy application code and data
COPY --chown=user . .

# Create directories for ChromaDB and temp files
RUN mkdir -p data/chroma_db data/gold

# Health check
HEALTHCHECK --interval=30s --timeout=10s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:7860/api/health')" || exit 1

# Run the FastAPI server
EXPOSE 7860
CMD ["uvicorn", "app.api:app", "--host", "0.0.0.0", "--port", "7860"]