# Stage 1: Build the frontend
FROM node:16-alpine AS frontend-build
WORKDIR /app/frontend
COPY frontend/package.json frontend/package-lock.json* ./
RUN npm install
COPY frontend/ .
RUN npm run build

# Stage 2: Build the backend
FROM python:3.10-slim
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    poppler-utils \
    tesseract-ocr \
    ghostscript \
    qpdf \
    unpaper \
    libxml2 \
    libxslt1.1 \
    libffi-dev \
    libssl-dev \
    pkg-config \
    python3-dev \
    && rm -rf /var/lib/apt/lists/*

# Configure pip for better reliability
RUN pip config set global.timeout 1000 && \
    pip config set global.retries 10 && \
    pip config set global.default-timeout 1000

# Install core dependencies first
RUN pip install --no-cache-dir \
    Flask==2.3.3 \
    Flask-Login==0.6.3 \
    flask-cors==4.0.0 \
    bcrypt==4.1.2 \
    Pillow==10.0.0 \
    pytesseract==0.3.10

# Install OCRmyPDF and its dependencies
RUN pip install --no-cache-dir ocrmypdf==16.10.0 pdf2image==1.16.3 pikepdf==9.5.2

# Install AI-related dependencies
RUN pip install --no-cache-dir \
    google-generativeai==0.3.1 \
    openai==1.3.0 \
    mistralai==0.0.7

# Copy backend code
COPY backend/ /app/backend/

# Copy built frontend assets into the backend's static folder
COPY --from=frontend-build /app/frontend/build/ /app/backend/static/

# Set working directory to backend
WORKDIR /app/backend

EXPOSE 5015
CMD ["python", "app.py"]