# ---------- Stage 1: Build React Frontend ----------
FROM node:18-bullseye AS frontend-builder
WORKDIR /frontend

# Copy package.json only (no package-lock.json required)
COPY frontend/package.json ./
RUN npm install --legacy-peer-deps

# Copy rest of frontend and build
COPY frontend/ ./
RUN npm run build

# ---------- Stage 2: Python Backend ----------
FROM python:3.10-slim AS backend
WORKDIR /app

# Install system dependencies for OCR, Earth Engine, FAISS, OpenCV, PDF
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential tesseract-ocr libgl1 libsndfile1 poppler-utils \
    && rm -rf /var/lib/apt/lists/*

# Copy backend files
COPY backend/ ./backend/
COPY backend/requirements.txt .

# Install Python deps
RUN pip install --no-cache-dir -r requirements.txt

# Copy model + FAISS db
COPY soil_best_model.pth ./soil_best_model.pth
COPY faiss_books_db.zip ./faiss_books_db.zip

# Copy React build from stage 1
COPY --from=frontend-builder /frontend/build ./frontend/build

# Expose port
EXPOSE 7860

# Run FastAPI backend
CMD ["uvicorn", "backend.app.main:app", "--host", "0.0.0.0", "--port", "7860"]