# Build stage
FROM node:20-slim AS builder
ARG PROJECT_FOLDER
ARG REACT_APP_MEMBER_URL
ARG REACT_APP_MYSUB_URL
ARG REACT_APP_RECOMMEND_URL

ENV NODE_ENV=production

WORKDIR /app

# Install dependencies
COPY ${PROJECT_FOLDER}/package*.json ./
RUN npm ci --only=production

# Build application
COPY ${PROJECT_FOLDER} .
RUN npm run build

# Run stage
FROM nginx:stable-alpine

# 시스템 환경변수 셋팅: api.js에서 사용하는 시스템 환경변수를 build시 셋팅해야 생성됨  
ENV REACT_APP_MEMBER_URL=${REACT_APP_MEMBER_URL}
ENV REACT_APP_MYSUB_URL=${REACT_APP_MYSUB_URL}
ENV REACT_APP_RECOMMEND_URL=${REACT_APP_RECOMMEND_URL}

ARG BUILD_FOLDER
ARG EXPORT_PORT

# Create nginx user if it doesn't exist
RUN adduser -S nginx || true

# Copy build files
COPY --from=builder /app/build /usr/share/nginx/html

# Copy and process nginx configuration
COPY ${BUILD_FOLDER}/nginx.conf /etc/nginx/templates/default.conf.template

# Add custom nginx settings
RUN echo "client_max_body_size 100M;" > /etc/nginx/conf.d/client_max_body_size.conf
RUN echo "proxy_buffer_size 128k;" > /etc/nginx/conf.d/proxy_buffer_size.conf
RUN echo "proxy_buffers 4 256k;" > /etc/nginx/conf.d/proxy_buffers.conf
RUN echo "proxy_busy_buffers_size 256k;" > /etc/nginx/conf.d/proxy_busy_buffers_size.conf

# Set permissions
RUN chown -R nginx:nginx /usr/share/nginx/html && \
    chmod -R 755 /usr/share/nginx/html && \
    chown -R nginx:nginx /var/cache/nginx && \
    chown -R nginx:nginx /var/log/nginx && \
    chown -R nginx:nginx /etc/nginx/conf.d && \
    touch /var/run/nginx.pid && \
    chown -R nginx:nginx /var/run/nginx.pid

USER nginx

EXPOSE ${EXPORT_PORT}

CMD ["nginx", "-g", "daemon off;"]