FROM debian:bookworm-slim

ARG FLUTTER_VERSION=3.38.9
ARG ANDROID_SDK_TOOLS_VERSION=11076708
ARG ANDROID_COMPILE_SDK=35
ARG ANDROID_BUILD_TOOLS=35.0.1

LABEL org.opencontainers.image.title="gpb-flutter-sdk-android"
LABEL org.opencontainers.image.description="Flutter SDK for Android CI builds"
LABEL org.opencontainers.image.version="${FLUTTER_VERSION}"

# Install dependencies for Flutter + Android SDK
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    git \
    unzip \
    xz-utils \
    ca-certificates \
    openjdk-17-jdk-headless \
    && rm -rf /var/lib/apt/lists/*

# Android SDK
ENV ANDROID_HOME=/opt/android-sdk
ENV PATH="${ANDROID_HOME}/cmdline-tools/latest/bin:${ANDROID_HOME}/platform-tools:${PATH}"

RUN mkdir -p "${ANDROID_HOME}/cmdline-tools" && \
    curl -fsSL "https://dl.google.com/android/repository/commandlinetools-linux-${ANDROID_SDK_TOOLS_VERSION}_latest.zip" \
      -o /tmp/cmdline-tools.zip && \
    unzip -q /tmp/cmdline-tools.zip -d /tmp/cmdline-tools && \
    mv /tmp/cmdline-tools/cmdline-tools "${ANDROID_HOME}/cmdline-tools/latest" && \
    rm -rf /tmp/cmdline-tools.zip /tmp/cmdline-tools

# Accept licenses and install SDK components
RUN yes | sdkmanager --licenses > /dev/null 2>&1 && \
    sdkmanager --install \
      "platform-tools" \
      "platforms;android-${ANDROID_COMPILE_SDK}" \
      "build-tools;${ANDROID_BUILD_TOOLS}"

# Flutter SDK
ENV FLUTTER_HOME=/opt/flutter
ENV PATH="${FLUTTER_HOME}/bin:${FLUTTER_HOME}/bin/cache/dart-sdk/bin:${PATH}"

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

RUN git config --global --add safe.directory "${FLUTTER_HOME}"

# Configure for Android-only
RUN flutter config --enable-android \
    --no-enable-web \
    --no-enable-ios \
    --no-enable-linux-desktop \
    --no-enable-macos-desktop \
    --no-enable-windows-desktop \
    --android-sdk "${ANDROID_HOME}"

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

RUN flutter doctor -v

WORKDIR /app