FROM svrnty/base-distro:flutter-sdk-linux-latest

ARG FLUTTER_VERSION=3.38.9

LABEL org.opencontainers.image.title="flutter-sdk-linux"
LABEL org.opencontainers.image.description="Flutter SDK for Linux desktop CI builds"
LABEL org.opencontainers.image.version="${FLUTTER_VERSION}"

USER 0

# Download Flutter SDK and strip unnecessary files
RUN curl -fsSL "https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_${FLUTTER_VERSION}-stable.tar.xz" \
      -o /tmp/flutter.tar.xz && \
    tar xf /tmp/flutter.tar.xz -C /opt && \
    rm /tmp/flutter.tar.xz && \
    rm -rf /opt/flutter/dev \
           /opt/flutter/examples \
           /opt/flutter/bin/cache/artifacts/engine/android-* \
           /opt/flutter/bin/cache/flutter_web_sdk

RUN git config --global --add safe.directory /opt/flutter && \
    cd /opt/flutter && git gc --prune=all

# Fix ownership before switching to flutter user
RUN chown -R 65532:65532 /opt/flutter

USER 65532

# Configure Flutter for Linux desktop only
RUN flutter config --enable-linux-desktop \
    --no-enable-web \
    --no-enable-android \
    --no-enable-ios \
    --no-enable-macos-desktop \
    --no-enable-windows-desktop

# Precache only Linux artifacts
RUN flutter precache --linux \
    --no-web \
    --no-android \
    --no-ios \
    --no-macos \
    --no-windows \
    --no-fuchsia \
    --no-universal

RUN flutter doctor -v

WORKDIR /app