# Use Node.js 18 Alpine as base image
FROM node:18-alpine AS base

# Install dependencies only when needed
FROM base AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app

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

# Install ALL dependencies (including devDependencies for build)
RUN npm install --legacy-peer-deps && npm cache clean --force

# Rebuild the source code only when needed
FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Set build environment variables
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV SKIP_ENV_VALIDATION=1

# Generate Prisma client
RUN npx prisma generate

# Build the application with proper environment
RUN npm run build

# Production image, copy all the files and run next
FROM base AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

# Install curl for health checks
RUN apk add --no-cache curl

# Create nextjs user
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs

# Copy package files for production install
COPY --from=builder /app/package*.json ./
COPY --from=builder /app/prisma ./prisma

# Install only production dependencies AND prisma CLI for migrations with legacy peer deps
RUN npm ci --omit=dev --legacy-peer-deps && npm install prisma sharp --legacy-peer-deps && npm cache clean --force

# Copy necessary files
COPY --from=builder /app/public ./public

# Copy built application
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

# Copy generated Prisma client from builder
COPY --from=builder /app/node_modules/.prisma ./node_modules/.prisma

# Create startup script
RUN echo '#!/bin/sh' > /app/start.sh && \
    echo 'echo "Running database migrations..."' >> /app/start.sh && \
    echo 'npx prisma migrate deploy || echo "Migration failed, but continuing..."' >> /app/start.sh && \
    echo 'echo "Starting application..."' >> /app/start.sh && \
    echo 'exec node server.js' >> /app/start.sh && \
    chmod +x /app/start.sh

# Create uploads directory for file uploads
RUN mkdir -p /app/uploads && chown -R nextjs:nodejs /app/uploads

# Change ownership of startup script
RUN chown nextjs:nodejs /app/start.sh

USER nextjs

EXPOSE 3000

ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

# Health check using curl
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:3000/api/health || exit 1

CMD ["/app/start.sh"]