# Stage 1: builder - install dependencies and build assets from source
FROM ruby:3.2-alpine AS builder

# Install build and asset tooling
RUN apk add --no-cache \
  build-base \
  git \
  nodejs \
  npm \
  yarn \
  libxml2-dev \
  libxslt-dev \
  zlib-dev \
  yaml-dev \
  bash

# Ensure a known Bundler version
RUN gem install bundler -v '2.4.22'

WORKDIR /app

# Copy the entire repository so Gemfile, gemspec, lib/ files are available for Bundler
COPY . .

# Install Ruby dependencies
RUN bundle install --jobs 4 --retry 3

# Install JS dependencies
RUN yarn install --frozen-lockfile

# Build frontend assets (Rollup)
RUN yarn build

# Stage 2: runtime - lean image with prebuilt assets and gems
FROM ruby:3.2-alpine

# Runtime dependencies (no dev/build tools)
RUN apk add --no-cache \
  bash \
  curl \
  libxml2 \
  libxslt \
  zlib

WORKDIR /app

# Copy gems and application from builder
COPY --from=builder /usr/local/bundle /usr/local/bundle
COPY --from=builder /app /app

# Ensure assets directories exist for smoke tests
RUN mkdir -p /app/public/assets /app/public/packs

ENV RAILS_ENV=production

EXPOSE 3000

# Run Rails server by default
CMD ["bash", "-lc", "bundle exec rails server -b 0.0.0.0 -p 3000"]