# Use multi-stage build for optimization
FROM node:22.6.0-alpine AS dependencies
WORKDIR /app

# Copy only package files first to leverage Docker cache
COPY package*.json ./
COPY epess-database/prisma ./prisma

# Enable legacy peer deps and install dependencies in one layer
RUN npm config set legacy-peer-deps true && \
    npm ci --only=production && \
    npm install --save-dev typescript @types/node @swc/core @swc/cli && \
    npx prisma generate

# Second stage for build
FROM node:22.6.0-alpine AS builder
WORKDIR /app

# Set legacy peer deps and copy only necessary files
COPY --from=dependencies /app/node_modules ./node_modules
COPY --from=dependencies /app/prisma ./prisma
COPY package*.json tsconfig*.json ./
COPY nest-cli.json ./
COPY src ./src

# Generate Prisma client and build
RUN npm config set legacy-peer-deps true && \
    npm run build

# Final stage
FROM node:22.6.0-alpine AS runner
WORKDIR /app

# Copy only necessary files with minimal layers
COPY --from=dependencies /app/node_modules ./node_modules
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/package*.json ./

# mount nvmrc and npmrc from host
COPY .nvmrc ./
COPY .npmrc ./

# Expose the port
EXPOSE 3000

# Use non-root user for security
USER node

# Pause to allow manual inspection (for debugging)
# CMD ["sh", "-c", "echo 'Paused. Press Ctrl+C to continue...'; sleep infinity"]

CMD ["npm", "run", "start:prod"]