FROM node:20-alpine

# Set working directory
WORKDIR /app

# Copy package files
COPY frontend/package*.json ./

# Install dependencies
RUN npm ci

# Copy application code
COPY frontend/ .

# Build argument for API URL (used for default build)
ARG NEXT_PUBLIC_API_URL=http://localhost:8001
ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL}

# Build the application
RUN npm run build

# Copy runtime config generation script
COPY frontend/generate-config.sh /app/generate-config.sh
RUN chmod +x /app/generate-config.sh

# Expose port
EXPOSE 3000

# Generate runtime config and start the application
CMD ["/bin/sh", "-c", "/app/generate-config.sh && npm start"]