FROM --platform=linux/amd64 debian:bookworm-slim

ENV PATH="$PATH:/opt/flutter/bin"

# Install system dependencies - minimal set for Flutter + Android builds
RUN apt-get update && apt-get install -y \
    wget curl unzip git xz-utils zip python3 libgtk-3-dev ninja-build openjdk-17-jre-headless \
    && rm -rf /var/lib/apt/lists/*

# Become non-root
ARG USERNAME=vscode
ARG USER_UID=1000
ARG USER_GID=1000

ENV FLUTTER_VERSION=3.44.0
ENV FLUTTER_HOME=/opt/flutter
RUN groupadd --gid $USER_GID $USERNAME \
 && useradd --uid $USER_UID --gid $USER_GID -m -s /bin/bash $USERNAME

# Install Flutter (tarball - much faster than git clone)
RUN wget -q "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

# Set up Android SDK
ENV ANDROID_HOME=/opt/android-sdk
ENV PATH=${PATH}:${ANDROID_HOME}/cmdline-tools/latest/bin:${ANDROID_HOME}/platform-tools:${ANDROID_HOME}/build-tools/35.0.0

RUN mkdir -p ${ANDROID_HOME}/cmdline-tools \
    && wget -q https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip -O commandlinetools.zip \
    && unzip -q commandlinetools.zip -d ${ANDROID_HOME}/cmdline-tools \
    && mv ${ANDROID_HOME}/cmdline-tools/cmdline-tools ${ANDROID_HOME}/cmdline-tools/latest \
    && rm commandlinetools.zip \
    && yes | sdkmanager --licenses \
    && sdkmanager "platform-tools" "platforms;android-35" "build-tools;35.0.0"
RUN chown -R 1000:1000 ${ANDROID_HOME} && chown -R 1000:1000 ${FLUTTER_HOME}

USER $USERNAME
ENV HOME=/home/$USERNAME