#!/usr/bin/env bash
# Build the Android APK end to end: native GDExtension .so -> Godot export -> (opt) install.
#
#   ./export-android.sh [Debug|Release] [--install]
#
# Prereqs (one-time), see docs/PLATFORMS.md:
#   - Android SDK at ~/Library/Android/sdk with an NDK under ndk/<ver>
#     (sdkmanager "ndk;27.2.12479018" "platforms;android-35" "build-tools;35.0.0")
#   - JDK 17+ (brew install openjdk@21)
#   - Godot 4.7.1 export templates installed
#   - ./gen-debug-keystore.sh  (once)
#   - editor_settings-4.7.tres: export/android/{android_sdk_path,java_sdk_path,debug_keystore}
set -euo pipefail
cd "$(dirname "$0")"

CONFIG="${1:-Debug}"
INSTALL=0
[ "${2:-}" = "--install" ] && INSTALL=1

SDK="${ANDROID_HOME:-${ANDROID_SDK_ROOT:-$HOME/Library/Android/sdk}}"
export ANDROID_NDK_ROOT="${ANDROID_NDK_ROOT:-$SDK/ndk/$(ls -1 "$SDK/ndk" 2>/dev/null | sort -V | tail -1)}"
export JAVA_HOME="${JAVA_HOME:-/opt/homebrew/opt/openjdk@21/libexec/openjdk.jdk/Contents/Home}"
[ -d "$JAVA_HOME" ] || export JAVA_HOME=/opt/homebrew/opt/openjdk/libexec/openjdk.jdk/Contents/Home
GODOT="${GODOT:-godot}"
ADB="${ADB:-$SDK/platform-tools/adb}"

case "$CONFIG" in
	Release)
		MODE="--export-release"
		OUT="build/export/mtgodot-poc-release.apk"
		;;
	*)
		MODE="--export-debug"
		OUT="build/export/mtgodot-poc.apk"
		;;
esac

echo ">> NDK:  $ANDROID_NDK_ROOT"
echo ">> JDK:  $JAVA_HOME"

# 1. native GDExtension
./build-android.sh "$CONFIG"

# 2. bake the AssetResolver index (PCK can't std::filesystem-scan on device).
#    Regenerate whenever assets/ changes. Harmless if assets are missing.
"$GODOT" --headless --path project --script bake_asset_index.gd || \
	echo ">> (asset_index bake skipped — no assets on this machine)"

# 3. Godot export
mkdir -p build/export
"$GODOT" --headless --path project "$MODE" "Android" "$(pwd)/$OUT"

echo
echo ">> APK: $OUT (index: $([ -f assets/asset_index.txt ] && echo baked || echo MISSING))"
unzip -l "$OUT" | grep -E "lib/arm64-v8a/.*\.so" || true

# 3. optional install (+ push the asset zip if it exists)
if [ "$INSTALL" = 1 ]; then
	"$ADB" devices -l
	"$ADB" install -r "$OUT"
	if [ -f build/export/assets.zip ]; then
		DEST="/sdcard/Android/data/org.internal.mtgodotpoc/files/assets.zip"
		echo ">> pushing assets.zip ($(du -h build/export/assets.zip | cut -f1)) -> $DEST"
		"$ADB" shell mkdir -p /sdcard/Android/data/org.internal.mtgodotpoc/files/ || true
		"$ADB" push build/export/assets.zip "$DEST"
		if [ "$CONFIG" != "Release" ]; then
			echo ">> copying assets.zip into the Debug app user:// directory"
			# Android 14/15 may deny run-as reading /sdcard even for the app's own
			# external files directory. Stream through adb instead.
			"$ADB" shell "run-as org.internal.mtgodotpoc sh -c 'cat > files/assets.zip'" \
				< build/export/assets.zip
		fi
	else
		echo ">> NOTE: no build/export/assets.zip — run ./pack-assets.sh; the world won't render without it"
	fi
	"$ADB" shell am start -W -n org.internal.mtgodotpoc/com.godot.game.GodotAppLauncher \
		-a android.intent.action.MAIN -c android.intent.category.LAUNCHER
	echo ">> logcat: $ADB logcat -s godot GodotError Godot"
fi