# Build stage
FROM node:18-alpine AS builder

# Set working directory
WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm ci

# Copy source code and config files
COPY . .

# Build the application
RUN npm run build

# Production stage
FROM node:18-alpine AS runner

# Set working directory
WORKDIR /app

# Copy package files
COPY package*.json ./

# Install production dependencies only
RUN npm ci --only=production

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

# Create a directory for markdown files
RUN mkdir -p /markdown

# Set environment variables
ENV NODE_ENV=production
ENV PORT=8080
ENV HOSTNAME=0.0.0.0

# Expose the port
EXPOSE 8080

# Health check
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:8080/ || exit 1

# Start the application
CMD ["npm", "start"]

# Do NOT copy posts/admin.json or posts/admin.json.tmp into the image
# These files are excluded via .dockerignore for security
# In production, mount the posts directory as a volume to persist posts and admin password
# If posts/admin.json does not exist, the default admin password is 'admin' (see README)