#!/usr/bin/env bash
REPO="NohamR/RMHook-Android"
WORKDIR="/tmp/rmhook"

set -euo pipefail

# --- Check dependencies ---
echo "[INFO] Checking dependencies..."
MISSING=()
for cmd in adb apktool keytool; do
    command -v "$cmd" >/dev/null 2>&1 || MISSING+=("$cmd")
done
# Check Android SDK build-tools (zipalign + apksigner)
SDK_ROOT="${ANDROID_SDK_ROOT:-$HOME/Library/Android/sdk}"
BUILD_TOOLS="$(find "$SDK_ROOT/build-tools" -maxdepth 1 -type d 2>/dev/null | sort -V | tail -1)"
if [ -z "$BUILD_TOOLS" ] || [ ! -d "$BUILD_TOOLS" ]; then
    MISSING+=("Android SDK build-tools (zipalign, apksigner)")
fi
if [ ${#MISSING[@]} -gt 0 ]; then
    echo "❌ Missing required tools:"
    for m in "${MISSING[@]}"; do echo "   - $m"; done
    echo ""
    echo "Install with:"
    echo "  brew install apktool android-platform-tools"
    echo "  # Android SDK build-tools via Android Studio SDK Manager"
    exit 1
fi
export ANDROID_SDK_BUILD_TOOLS="$BUILD_TOOLS"

# --- Setup workspace ---
echo "[INFO] Setting up workspace..."
rm -rf "$WORKDIR"
mkdir -p "$WORKDIR/build" "$WORKDIR/libs" "$WORKDIR/config" "$WORKDIR/output"

# --- Download .so files from releases ---
echo "[INFO] Downloading librmhook.so..."
curl -sL \
  -o "$WORKDIR/build/librmhook.so" \
  "https://github.com/$REPO/releases/latest/download/librmhook.so"

echo "[INFO] Downloading libshadowhook_nothing.so..."
curl -sL \
  -o "$WORKDIR/libs/libshadowhook_nothing.so" \
  "https://github.com/$REPO/releases/latest/download/libshadowhook_nothing.so"

# --- Download inject script ---
echo "[INFO] Downloading inject script..."
curl -sL \
  -o "$WORKDIR/inject.sh" \
  "https://raw.githubusercontent.com/$REPO/refs/heads/main/scripts/inject.sh"
chmod +x "$WORKDIR/inject.sh"

# --- Pull APK splits from device ---
APK_DIR="$HOME/reMarkable/app"
mkdir -p "$APK_DIR"

echo "[INFO] Detecting reMarkable app on device..."
PKG_PATHS="$(adb shell pm path com.remarkable.mobile 2>/dev/null || true)"
if [ -z "$PKG_PATHS" ]; then
    echo "❌ reMarkable app not found on device. Install it from the Play Store first."
    exit 1
fi

echo "[INFO] Pulling APK splits..."
while IFS= read -r line; do
    APK_PATH="${line#package:}"
    APK_NAME="$(basename "$APK_PATH")"
    echo "   Pulling $APK_NAME..."
    adb pull "$APK_PATH" "$APK_DIR/$APK_NAME" 2>/dev/null
done <<< "$PKG_PATHS"

if [ ! -f "$APK_DIR/base.apk" ]; then
    echo "❌ Failed to pull base.apk"
    exit 1
fi

# --- Run inject ---
echo "[INFO] Running inject script..."
"$WORKDIR/inject.sh" "$APK_DIR"

# --- Install ---
echo "[INFO] Installing patched APKs..."
adb uninstall com.remarkable.mobile 2>/dev/null || true
adb install-multiple --no-streaming "$WORKDIR/output/base.apk" "$WORKDIR/output/split_config.arm64_v8a.apk" "$WORKDIR/output/split_config.xxhdpi.apk"

echo ""
echo "✅ Done! RMHook is installed on your reMarkable."
echo ""
echo "📋 Next steps:"
echo "   1. Open the reMarkable app"
echo "   2. Configure your rmfakecloud host and port"
echo ""
echo "🔍 To debug:"
echo "   adb logcat -s 'RMHook:*'"