#!/usr/bin/env fish
#
# android-env.fish — export the environment the Android build needs (fish shell).
#
# SOURCE this, don't execute it:
#
#   source scripts/android-env.fish
#   cargo tauri android dev --open
#
# bash/zsh users want scripts/android-env.sh instead — only the *env* script is
# shell-specific, since it has to mutate the calling shell. ./scripts/android-setup.sh
# is executed rather than sourced, so it already works from any shell.
#
# 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.

function _mtgc_android_env
    # --- SDK ---
    set -l sdk $HOME/Android/Sdk
    if set -q ANDROID_HOME; and test -n "$ANDROID_HOME"
        set sdk $ANDROID_HOME
    end
    if not test -d $sdk
        echo "android-env: no Android SDK at $sdk (run ./scripts/android-setup.sh)" >&2
        return 1
    end

    # --- NDK: newest *stable* installed (skip beta/rc/canary) ---
    # `find` rather than a glob: fish raises an error on a wildcard that matches
    # nothing, and an SDK with no ndk/ directory at all is a normal state here.
    # `sort -V` so 9.x doesn't outrank 10.x the way plain lexicographic would.
    set -l ndk ""
    for d in (find $sdk/ndk -mindepth 1 -maxdepth 1 -type d 2>/dev/null | sort -V)
        set -l rev (sed -n 's/^Pkg.Revision *= *//p' $d/source.properties 2>/dev/null)
        switch "$rev"
            case '*beta*' '*rc*' '*canary*'
                continue
        end
        set ndk $d
    end
    if test -z "$ndk"
        echo "android-env: no stable NDK under $sdk/ndk (run ./scripts/android-setup.sh)" >&2
        return 1
    end

    # --- JDK: Gradle/AGP reject very new JDKs; prefer Studio's bundled JBR 21 ---
    # Ordered by preference; globbed locations go through `find` for the same
    # unmatched-wildcard reason as above.
    set -l studio $HOME/.local/share/JetBrains/Toolbox/apps/android-studio
    set -l candidates \
        $studio/jbr \
        (find $studio -mindepth 2 -maxdepth 2 -type d -name jbr 2>/dev/null | sort -V) \
        $HOME/android-studio/jbr \
        /opt/android-studio/jbr \
        (find /usr/lib/jvm -maxdepth 1 -name 'java-21-openjdk*' 2>/dev/null | sort -V) \
        (find /usr/lib/jvm -maxdepth 1 -name 'java-17-openjdk*' 2>/dev/null | sort -V)

    set -l jdk ""
    for d in $candidates
        # Test for javac specifically: a JRE-only or leftover-empty directory
        # under /usr/lib/jvm must not count.
        if test -x $d/bin/javac
            set jdk $d
            break
        end
    end
    if test -z "$jdk"
        echo "android-env: no JDK 21/17 found (Gradle rejects the system default)" >&2
        return 1
    end

    set -gx ANDROID_HOME $sdk
    set -gx NDK_HOME $ndk
    set -gx JAVA_HOME $jdk
    # adb/emulator live here; harmless if already present.
    if not contains $sdk/platform-tools $PATH
        set -gx PATH $sdk/platform-tools $PATH
    end

    echo "ANDROID_HOME=$ANDROID_HOME"
    echo "NDK_HOME=$NDK_HOME"
    echo "JAVA_HOME=$JAVA_HOME"
end

_mtgc_android_env
set -l _mtgc_ok $status
functions -e _mtgc_android_env
# Leave the sourced file's exit status reflecting whether detection succeeded.
test $_mtgc_ok -eq 0