mtgc/scripts/android-env.sh

#!/usr/bin/env bash
#
# android-env.sh — export the environment the Android build needs.
#
# SOURCE this, don't execute it:
#
#   source scripts/android-env.sh
#   cargo tauri android dev --open
#
# Everything is auto-detected, so there are no machine-specific paths to keep in
# sync. Run ./scripts/android-setup.sh first to install the pieces.

_mtgc_android_env() {
    local sdk ndk jdk

    # --- SDK ---
    sdk="${ANDROID_HOME:-$HOME/Android/Sdk}"
    if [ ! -d "$sdk" ]; then
        echo "android-env: no Android SDK at $sdk (run ./scripts/android-setup.sh)" >&2
        return 1
    fi

    # --- NDK: newest *stable* installed (skip beta/rc/canary) ---
    # `sort -V` so 9.x doesn't outrank 10.x the way plain lexicographic would.
    local best=""
    while IFS= read -r d; do
        [ -n "$d" ] || continue
        case "$(sed -n 's/^Pkg.Revision *= *//p' "$d/source.properties" 2>/dev/null)" in
            *beta*|*rc*|*canary*) continue ;;
        esac
        best="$d"
    done < <(find "$sdk/ndk" -mindepth 1 -maxdepth 1 -type d 2>/dev/null | sort -V)
    ndk="$best"
    if [ -z "$ndk" ]; then
        echo "android-env: no stable NDK under $sdk/ndk (run ./scripts/android-setup.sh)" >&2
        return 1
    fi

    # --- JDK: Gradle/AGP reject very new JDKs; prefer Studio's bundled JBR 21 ---
    for d in \
        "$HOME/.local/share/JetBrains/Toolbox/apps/android-studio/jbr" \
        "$HOME/.local/share/JetBrains/Toolbox/apps/android-studio"/*/jbr \
        "$HOME/android-studio/jbr" \
        /opt/android-studio/jbr \
        /usr/lib/jvm/java-21-openjdk /usr/lib/jvm/java-21-openjdk-* \
        /usr/lib/jvm/java-17-openjdk /usr/lib/jvm/java-17-openjdk-*
    do
        if [ -x "$d/bin/javac" ]; then jdk="$d"; break; fi
    done
    if [ -z "$jdk" ]; then
        echo "android-env: no JDK 21/17 found (Gradle rejects the system default)" >&2
        return 1
    fi

    export ANDROID_HOME="$sdk"
    export NDK_HOME="$ndk"
    export JAVA_HOME="$jdk"
    # adb/emulator live here; harmless if already present.
    case ":$PATH:" in
        *":$sdk/platform-tools:"*) ;;
        *) export PATH="$sdk/platform-tools:$PATH" ;;
    esac

    echo "ANDROID_HOME=$ANDROID_HOME"
    echo "NDK_HOME=$NDK_HOME"
    echo "JAVA_HOME=$JAVA_HOME"
}

_mtgc_android_env
unset -f _mtgc_android_env