# =============================================================================
# WZ Phone — Android build environment (Debian 12 / Bookworm)
#
# Supports both:
#   1. Legacy Kotlin+JNI Android app (via cargo-ndk + gradle)
#   2. Tauri 2.x Mobile Android app (via tauri-cli + Node/npm)
#
# Toolchain:
#   - Debian 12 (cmake 3.25, no Android cross-compilation bugs)
#   - JDK 17 (Gradle 8.5 + AGP 8.2.0 compatible)
#   - NDK 26.1 (last stable before scudo/MTE crash on NDK 27+)
#   - Node.js 20 LTS (for Tauri frontend build)
#   - Rust stable with all 4 Android targets + cargo-ndk + tauri-cli 2.x
#
# Build:  docker build -t wzp-android-builder -f Dockerfile.android-builder .
# =============================================================================
FROM debian:bookworm

ARG NDK_VERSION=26.1.10909125
ARG ANDROID_API=34
# Tauri 2.x mobile targets compileSdk 36 + build-tools 35 by default. Install
# both 34 (legacy Kotlin app) and 35/36 (Tauri mobile) so the same image works
# for both pipelines.
ARG ANDROID_API_TAURI=36
ARG BUILD_TOOLS_TAURI=35.0.0

ENV DEBIAN_FRONTEND=noninteractive \
    ANDROID_HOME=/opt/android-sdk \
    JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64

ENV ANDROID_NDK_HOME=$ANDROID_HOME/ndk/$NDK_VERSION \
    ANDROID_NDK=$ANDROID_HOME/ndk/$NDK_VERSION

# ── System packages ──────────────────────────────────────────────────────────
RUN apt-get update && apt-get install -y --no-install-recommends \
        build-essential \
        cmake \
        curl \
        git \
        libssl-dev \
        pkg-config \
        unzip \
        wget \
        zip \
        openjdk-17-jdk-headless \
        ca-certificates \
        libasound2-dev \
        file \
        xz-utils \
    && rm -rf /var/lib/apt/lists/*

# ── Node.js 20 LTS (required by Tauri for frontend build) ────────────────────
RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
    && apt-get install -y --no-install-recommends nodejs \
    && rm -rf /var/lib/apt/lists/* \
    && node --version \
    && npm --version

# ── Android SDK + NDK 26.1 ──────────────────────────────────────────────────
RUN mkdir -p $ANDROID_HOME/cmdline-tools \
    && cd /tmp \
    && wget -q https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip -O cmdtools.zip \
    && unzip -qo cmdtools.zip -d $ANDROID_HOME/cmdline-tools \
    && mv $ANDROID_HOME/cmdline-tools/cmdline-tools $ANDROID_HOME/cmdline-tools/latest \
    && rm cmdtools.zip

RUN yes | $ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager --licenses > /dev/null 2>&1 \
    && $ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager --install \
        "platforms;android-${ANDROID_API}" \
        "build-tools;${ANDROID_API}.0.0" \
        "platforms;android-${ANDROID_API_TAURI}" \
        "build-tools;${BUILD_TOOLS_TAURI}" \
        "ndk;${NDK_VERSION}" \
        "platform-tools" \
        2>&1 | grep -v '^\[' > /dev/null

# Work around the API-24 libc.a stub in the NDK. Any C++ static lib we
# link into libwzp_desktop_lib.so (e.g. the Oboe audio bridge) pulls in
# bionic's static pthread_create from API-24 libc.a via libc++_shared,
# and that pthread_create crashes at __init_tcb+4 when called from a
# .so loaded via dlopen (the static stub expects libc init state that
# only exists for main executables). API-26 has the proper runtime
# bindings. Tauri-cli hard-codes aarch64-linux-android24-clang as the
# linker and ignores .cargo/config.toml overrides, so the only sure
# fix is to replace the NDK's ${abi}24-clang binary itself with a
# shim that exec()s the ${abi}26-clang equivalent. Applies to all four
# ABIs × {clang, clang++}. The legacy wzp-android crate works without
# this because cargo-ndk honours a crate-level linker override; the
# shim is the minimal targeted fix for the cargo-tauri build path.
# Added as Option 3 for the incremental Step E regression (commit 4250f1b).
RUN set -eux; \
    BIN=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin; \
    for abi in aarch64-linux-android armv7a-linux-androideabi i686-linux-android x86_64-linux-android; do \
        for suffix in clang clang++; do \
            mv "$BIN/${abi}24-${suffix}" "$BIN/${abi}24-${suffix}.orig"; \
            printf '#!/bin/sh\nexec "%s/%s26-%s" "$@"\n' "$BIN" "$abi" "$suffix" > "$BIN/${abi}24-${suffix}"; \
            chmod +x "$BIN/${abi}24-${suffix}"; \
        done; \
    done

# Make SDK world-readable so builder user can access it
RUN chmod -R a+rX $ANDROID_HOME

# ── Builder user (1000:1000) ─────────────────────────────────────────────────
RUN groupadd -g 1000 builder \
    && useradd -m -u 1000 -g 1000 -s /bin/bash builder

USER builder
WORKDIR /home/builder

# ── Rust toolchain ───────────────────────────────────────────────────────────
# Install all 4 Android targets (Tauri Mobile builds for all ABIs by default;
# cargo-ndk legacy path only needs arm64-v8a — both workflows supported).
RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs \
        | sh -s -- -y --default-toolchain stable \
    && . $HOME/.cargo/env \
    && rustup target add \
        aarch64-linux-android \
        armv7-linux-androideabi \
        i686-linux-android \
        x86_64-linux-android \
    && cargo install cargo-ndk \
    && cargo install tauri-cli --version "^2.0" --locked

ENV PATH="/home/builder/.cargo/bin:$ANDROID_HOME/cmdline-tools/latest/bin:$ANDROID_HOME/platform-tools:$JAVA_HOME/bin:$PATH"

# NDK_HOME is the env var tauri-cli checks (in addition to ANDROID_NDK_HOME)
ENV NDK_HOME=$ANDROID_NDK_HOME

WORKDIR /build/source