# Use Node.js 20 Alpine version as the base image (lightweight but check compatibility)
FROM node:20-alpine

# Set environment variables
ENV NODE_ENV=development \
    PNPM_HOME="/pnpm" \
    PATH="$PNPM_HOME:$PATH"

# Install prerequisites using apk (Alpine package manager)
# Add git, python3, make, g++ (build-base provides make/g++)
RUN apk add --no-cache \
      git \
      python3 \
      build-base

# Install pnpm globally using npm (common method on Alpine)
# Consider matching the version from your package.json "packageManager" field if added
RUN npm install -g pnpm

# Verify pnpm installation
RUN pnpm --version

# Set the working directory
WORKDIR /app

# Copy package manifests
# IMPORTANT: Ensure package.json contains the "packageManager" field for reliability
COPY package.json pnpm-lock.yaml* ./

# Install ALL dependencies using pnpm (needed for devDependencies like vite-node)
RUN pnpm install --frozen-lockfile

# Copy the rest of your application code
COPY . .

# --- Create Non-Root User for Alpine ---
# Alpine images don't have a 'node' user by default like Debian ones
# Create a non-root user and group (-S for system user/group)
RUN addgroup -S appgroup && adduser -S appuser -G appgroup

# Change ownership of the app directory to the new user
RUN chown -R appuser:appgroup /app
# --- End User Creation ---

# --- Removed Directory Creation for /app ---
# DO NOT create session/downloads/auth_info_baileys here.
# Your application code should write persistent data to the /data directory,
# which requires enabling Persistent Storage in Hugging Face Space settings.

# Switch to the non-root user
USER appuser

# Expose the port your application listens on
EXPOSE 7860

# The command to run your application using pnpm in dev mode
CMD ["pnpm", "run", "dev"]