# Use latest stable channel SDK.
FROM dart:stable AS build

# Set user/group IDs (defaults to 1000:1000)
ARG PUID=1000
ARG PGID=1000

# Create user and group
RUN groupadd -g $PGID appgroup && \
    useradd -u $PUID -g $PGID -m appuser

# Resolve app dependencies.
WORKDIR /app
COPY pubspec.* ./
RUN dart pub get

# Copy app source code (except anything in .dockerignore) and AOT compile app.
COPY --chown=$PUID:$PGID . .
USER appuser
RUN dart run build_runner build --delete-conflicting-outputs && \
    APP_VERSION=$(grep 'version:' pubspec.yaml | sed 's/version: //') && \
    dart compile exe bin/server.dart -o bin/server \
    -DAPP_VERSION=$APP_VERSION

# Build minimal serving image from AOT-compiled `/server`
# and the pre-built AOT-runtime in the `/runtime/` directory of the base image.
FROM scratch

# Set user/group IDs (defaults to 1000:1000)
ARG PUID=1000
ARG PGID=1000

COPY --from=build /runtime/ /
COPY --from=build /app/bin/server /app/bin/
COPY assets /assets

# Set user for runtime (using numeric IDs since scratch has no users)
USER $PUID:$PGID

# Start server.
EXPOSE 3000
CMD ["/app/bin/server"]