# Stage 1: Install dependencies
FROM node:22-alpine AS deps
WORKDIR /app

# Install dependencies based on your package manager
COPY package.json package-lock.json ./
RUN npm ci

# Stage 2: Build the Next.js application (production build)
FROM node:22-alpine AS builder
WORKDIR /app

# Copy dependencies from the 'deps' stage
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Declare the build argument
ARG NEXT_PUBLIC_DRB_BASE_API_URL
# Set the environment variable for the build stage from the build argument
ENV NEXT_PUBLIC_DRB_BASE_API_URL=${NEXT_PUBLIC_DRB_BASE_API_URL}

# Build the Next.js application for production
ENV NODE_ENV=production
RUN npm run build

# Stage 3: Run the Next.js application (flexible for dev and prod)
FROM node:22-alpine AS runner
WORKDIR /app

# Copy necessary files for both development and production
COPY --from=builder /app/src/public ./public
COPY --from=builder /app/.next ./.next
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/package.json ./package.json

# If you are using `output: 'standalone'` in next.config.js, uncomment the following:
# ENV NEXT_SHARP_PATH=/usr/local/lib/node_modules/sharp
# COPY --from=builder /app/.next/standalone ./
# COPY --from=builder /app/.next/static ./.next/static
# COPY --from=builder /app/public ./public # Already copied above, but keep if standalone specific

# Expose the port Next.js runs on (default is 3000)
EXPOSE 3000

# Argument to set NODE_ENV at runtime
ARG NODE_ENV=production
ENV NODE_ENV=${NODE_ENV}

# Command to run the Next.js application
# This will run 'npm run dev' if NODE_ENV is 'development', otherwise 'npm start' (production)
CMD ["sh", "-c", "if [ \"$NODE_ENV\" = \"development\" ]; then npm run dev; else npm start; fi"]