#!/bin/bash

# TimeSafari Android Icon Generation Script
# Generates all required Android launcher icon sizes from assets/icon.png
# Author: Matthew Raymer

set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"
ASSETS_DIR="$PROJECT_ROOT/assets"
ANDROID_RES_DIR="$PROJECT_ROOT/android/app/src/main/res"

echo "=== TimeSafari Android Icon Generation ==="
echo "[$(date '+%Y-%m-%d %H:%M:%S')] [INFO] Starting Android icon generation"

# Check if source icon exists
if [ ! -f "$ASSETS_DIR/icon.png" ]; then
    echo "[ERROR] Source icon not found: $ASSETS_DIR/icon.png"
    exit 1
fi

# Check if ImageMagick is available
if ! command -v convert &> /dev/null; then
    echo "[ERROR] ImageMagick (convert) not found. Please install ImageMagick."
    echo "  Arch: sudo pacman -S imagemagick"
    echo "  Ubuntu: sudo apt-get install imagemagick"
    echo "  macOS: brew install imagemagick"
    exit 1
fi

# Create mipmap directories if they don't exist
mkdir -p "$ANDROID_RES_DIR/mipmap-hdpi"
mkdir -p "$ANDROID_RES_DIR/mipmap-mdpi"
mkdir -p "$ANDROID_RES_DIR/mipmap-xhdpi"
mkdir -p "$ANDROID_RES_DIR/mipmap-xxhdpi"
mkdir -p "$ANDROID_RES_DIR/mipmap-xxxhdpi"

echo "[INFO] Generating launcher icons..."

# Generate launcher icons for different densities
# Android launcher icon sizes: mdpi=48, hdpi=72, xhdpi=96, xxhdpi=144, xxxhdpi=192
convert "$ASSETS_DIR/icon.png" -resize 48x48 "$ANDROID_RES_DIR/mipmap-mdpi/ic_launcher.png"
convert "$ASSETS_DIR/icon.png" -resize 72x72 "$ANDROID_RES_DIR/mipmap-hdpi/ic_launcher.png"
convert "$ASSETS_DIR/icon.png" -resize 96x96 "$ANDROID_RES_DIR/mipmap-xhdpi/ic_launcher.png"
convert "$ASSETS_DIR/icon.png" -resize 144x144 "$ANDROID_RES_DIR/mipmap-xxhdpi/ic_launcher.png"
convert "$ASSETS_DIR/icon.png" -resize 192x192 "$ANDROID_RES_DIR/mipmap-xxxhdpi/ic_launcher.png"

# Generate round launcher icons
convert "$ASSETS_DIR/icon.png" -resize 48x48 "$ANDROID_RES_DIR/mipmap-mdpi/ic_launcher_round.png"
convert "$ASSETS_DIR/icon.png" -resize 72x72 "$ANDROID_RES_DIR/mipmap-hdpi/ic_launcher_round.png"
convert "$ASSETS_DIR/icon.png" -resize 96x96 "$ANDROID_RES_DIR/mipmap-xhdpi/ic_launcher_round.png"
convert "$ASSETS_DIR/icon.png" -resize 144x144 "$ANDROID_RES_DIR/mipmap-xxhdpi/ic_launcher_round.png"
convert "$ASSETS_DIR/icon.png" -resize 192x192 "$ANDROID_RES_DIR/mipmap-xxxhdpi/ic_launcher_round.png"

# Create background and foreground mipmap files
# These reference the existing drawable files
cat > "$ANDROID_RES_DIR/mipmap-anydpi-v26/ic_launcher_background.xml" << 'EOF'
<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
    <background android:drawable="@drawable/ic_launcher_background"/>
</adaptive-icon>
EOF

cat > "$ANDROID_RES_DIR/mipmap-anydpi-v26/ic_launcher_foreground.xml" << 'EOF'
<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
</adaptive-icon>
EOF

# Update the existing launcher XML files to reference the correct resources
cat > "$ANDROID_RES_DIR/mipmap-anydpi-v26/ic_launcher.xml" << 'EOF'
<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
    <background android:drawable="@drawable/ic_launcher_background"/>
    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
</adaptive-icon>
EOF

cat > "$ANDROID_RES_DIR/mipmap-anydpi-v26/ic_launcher_round.xml" << 'EOF'
<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
    <background android:drawable="@drawable/ic_launcher_background"/>
    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
</adaptive-icon>
EOF

echo "[SUCCESS] Generated Android launcher icons:"
echo "  - mipmap-mdpi/ic_launcher.png (48x48)"
echo "  - mipmap-hdpi/ic_launcher.png (72x72)"
echo "  - mipmap-xhdpi/ic_launcher.png (96x96)"
echo "  - mipmap-xxhdpi/ic_launcher.png (144x144)"
echo "  - mipmap-xxxhdpi/ic_launcher.png (192x192)"
echo "  - Updated mipmap-anydpi-v26 XML files"
echo "[SUCCESS] Android icon generation completed successfully!"