FROM mcr.microsoft.com/dotnet/sdk:10.0

# ── Java (required by the Android SDK tools) ─────────────────────────────────
RUN apt-get update && apt-get install -y --no-install-recommends \
        openjdk-17-jdk-headless \
        wget \
        unzip \
    && apt-get clean && rm -rf /var/lib/apt/lists/*

ENV JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64
ENV ANDROID_HOME=/opt/android-sdk
# .NET 10 android workload compiles against API level 36 (see error XA5207
# if this drifts: the workload's Xamarin.Android.Tooling.targets dictates it).
ENV ANDROID_SDK_PLATFORM=36
ENV ANDROID_SDK_BUILD_TOOLS=36.0.0

# ── Android command-line tools ────────────────────────────────────────────────
# Pin the build number to a known-good release; update when Google breaks the URL.
# Latest as of 2025: commandlinetools-linux-11076708_latest.zip (cmdline-tools 12.0)
RUN mkdir -p "${ANDROID_HOME}/cmdline-tools" && \
    wget -q "https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip" \
         -O /tmp/cmdtools.zip && \
    unzip -q /tmp/cmdtools.zip -d "${ANDROID_HOME}/cmdline-tools" && \
    mv "${ANDROID_HOME}/cmdline-tools/cmdline-tools" "${ANDROID_HOME}/cmdline-tools/latest" && \
    rm /tmp/cmdtools.zip

ENV PATH="${JAVA_HOME}/bin:${ANDROID_HOME}/cmdline-tools/latest/bin:${ANDROID_HOME}/platform-tools:${PATH}"

# ── Android SDK packages ──────────────────────────────────────────────────────
RUN yes | sdkmanager --licenses > /dev/null && \
    sdkmanager \
        "platform-tools" \
        "platforms;android-${ANDROID_SDK_PLATFORM}" \
        "build-tools;${ANDROID_SDK_BUILD_TOOLS}"

# ── dotnet android workload (~1 GB, baked into this layer) ───────────────────
RUN dotnet workload install android

WORKDIR /tmp/build