# Stage 1: Build backend
FROM node:20-alpine AS backend-builder
WORKDIR /app/backend
COPY backend/package*.json ./
# Use inline NODE_ENV=development so devDeps (nest CLI) are installed
# but the global NODE_ENV stays production for the actual build
RUN NODE_ENV=development npm ci --legacy-peer-deps --include=dev
COPY backend/ .
RUN ./node_modules/.bin/nest build

# Stage 2: Build frontend
FROM node:20-alpine AS frontend-builder
WORKDIR /app/frontend
COPY frontend/package*.json ./
RUN NODE_ENV=development npm ci --legacy-peer-deps --include=dev
COPY frontend/ .
ENV NEXT_PUBLIC_API_URL=/api-backend
ENV NEXT_TELEMETRY_DISABLED=1
ENV NODE_ENV=production
RUN npm run build

# Stage 3: Runtime
FROM node:20-bookworm-slim AS runner
WORKDIR /app

# Install nginx and MongoDB
RUN apt-get update && apt-get install -y --no-install-recommends \
    nginx \
    gnupg \
    curl \
    && curl -fsSL https://www.mongodb.org/static/pgp/server-7.0.asc | gpg -o /usr/share/keyrings/mongodb-server-7.0.gpg --dearmor \
    && echo "deb [ signed-by=/usr/share/keyrings/mongodb-server-7.0.gpg ] https://repo.mongodb.org/apt/debian bookworm/mongodb-org/7.0 main" > /etc/apt/sources.list.d/mongodb-org-7.0.list \
    && apt-get update && apt-get install -y --no-install-recommends mongodb-org \
    && rm -rf /var/lib/apt/lists/* \
    && mkdir -p /data/db /run/nginx

# Copy backend build
COPY --from=backend-builder /app/backend/dist ./backend/dist
COPY --from=backend-builder /app/backend/node_modules ./backend/node_modules
COPY --from=backend-builder /app/backend/package.json ./backend/

# Copy frontend build (standalone mode)
COPY --from=frontend-builder /app/frontend/.next/standalone ./frontend/
COPY --from=frontend-builder /app/frontend/.next/static ./frontend/.next/static
# public dir may be empty — copy if exists
COPY --from=frontend-builder /app/frontend/public/ ./frontend/public/

# Nginx config
COPY nginx.conf /etc/nginx/nginx.conf

# Start script
COPY start.sh .
RUN chmod +x start.sh

EXPOSE 80
CMD ["./start.sh"]