# Build stage for React frontend
FROM node:20-alpine AS frontend-builder

WORKDIR /frontend
COPY frontend/package*.json ./
RUN npm install

COPY frontend/ ./
RUN npm run build

# Production stage — uses pre-built base with Tesseract + Python deps.
# Base image contains: python:3.11-slim + tesseract-ocr + all pip packages.
# Rebuild base only when requirements.txt or system deps change:
#   docker build -f klausur-service/Dockerfile.base -t klausur-base:latest klausur-service/
FROM klausur-base:latest

WORKDIR /app

# Copy backend code (this is the only layer that changes on code edits)
COPY backend/ ./

# Copy built frontend to the expected path
COPY --from=frontend-builder /frontend/dist ./frontend/dist

# Create uploads directory
RUN mkdir -p /app/uploads

# Expose port
EXPOSE 8086

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8086/health || exit 1

# Run the application
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8086"]