FROM node:20-alpine as base

# Install Deno
RUN apk update && apk upgrade && \
    apk add --no-cache dumb-init curl unzip && \
    curl -fsSL https://deno.land/install.sh | sh && \
    mv /root/.deno/bin/deno /usr/local/bin/ && \
    apk del curl unzip && \
    rm -rf /var/cache/apk/*

# Set working directory
WORKDIR /app

# DEPENDENCIES stage
FROM base as deps

# Copy package files for Deno
COPY package.json deno.lock* ./

# Install using Deno
RUN deno install

# BUILDER stage
FROM base as builder

WORKDIR /app

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

# Copy source code
COPY . .

# Create production build
RUN deno task build

# PRODUCTION stage
FROM base as production

# Set prod environment
ENV NODE_ENV=production \
    PORT=3000

# Create non-root user
RUN addgroup -g 1001 -S nodejs && \
    adduser -S -u 1001 -G nodejs nodejs

WORKDIR /app

# Copy only necessary files from builder
COPY --chown=nodejs:nodejs --from=builder /app/package.json ./
COPY --chown=nodejs:nodejs --from=builder /app/deno.lock* ./
COPY --chown=nodejs:nodejs --from=builder /app/node_modules ./node_modules
COPY --chown=nodejs:nodejs --from=builder /app/build ./build

# Switch to non-root user
USER nodejs

# Expose port
EXPOSE 3000

# Use dumb-init to handle signals properly
ENTRYPOINT ["dumb-init", "--"]

# Start the application
# For adapter-node (SSR):
CMD ["node", "build/index.js"]