#!/usr/bin/env bash
#
# Inject Sparkle framework into a macOS .app bundle for auto-updates
# Usage: inject_sparkle.sh <app_path>
#
# Environment variables (required):
#   SPARKLE_EDDSA_PUBLIC_KEY - EdDSA public key for verifying updates
#
# Optional environment variables:
#   SPARKLE_FEED_URL - Appcast URL (default: https://assets.eagle0.net/mac/appcast.xml)
#   SPARKLE_VERSION - Sparkle version to use (default: 2.9.3)

set -euxo pipefail

APP_PATH="$1"
SPARKLE_VERSION="${SPARKLE_VERSION:-2.9.3}"
SPARKLE_FEED_URL="${SPARKLE_FEED_URL:-https://assets.eagle0.net/mac/appcast.xml}"
SPARKLE_CACHE_DIR="/tmp/sparkle-cache"

if [ ! -d "$APP_PATH" ]; then
    echo "ERROR: App not found at $APP_PATH"
    exit 1
fi

if [ -z "${SPARKLE_EDDSA_PUBLIC_KEY:-}" ]; then
    echo "ERROR: SPARKLE_EDDSA_PUBLIC_KEY environment variable not set"
    exit 1
fi

# Always use a fresh Sparkle download to avoid cache corruption issues
SPARKLE_DIR="$SPARKLE_CACHE_DIR/Sparkle-$SPARKLE_VERSION"
echo "=== Clearing Sparkle cache and downloading fresh copy ==="
rm -rf "$SPARKLE_DIR"
mkdir -p "$SPARKLE_DIR"

SPARKLE_URL="https://github.com/sparkle-project/Sparkle/releases/download/${SPARKLE_VERSION}/Sparkle-${SPARKLE_VERSION}.tar.xz"
echo "Downloading from: $SPARKLE_URL"
curl -L "$SPARKLE_URL" -o /tmp/sparkle.tar.xz
tar -xJf /tmp/sparkle.tar.xz -C "$SPARKLE_DIR"
rm /tmp/sparkle.tar.xz

# Show what was extracted
echo "=== Extracted contents ==="
ls -la "$SPARKLE_DIR/"

# The tarball extracts files directly, not into a subdirectory
# Verify the framework has proper symlink structure
echo "=== Verifying Sparkle.framework structure ==="
ls -la "$SPARKLE_DIR/Sparkle.framework/"

if [ ! -L "$SPARKLE_DIR/Sparkle.framework/Sparkle" ]; then
    echo "ERROR: Sparkle.framework/Sparkle is not a symlink"
    file "$SPARKLE_DIR/Sparkle.framework/Sparkle"
    exit 1
fi

if [ ! -L "$SPARKLE_DIR/Sparkle.framework/Versions/Current" ]; then
    echo "ERROR: Sparkle.framework/Versions/Current is not a symlink"
    ls -la "$SPARKLE_DIR/Sparkle.framework/Versions/"
    exit 1
fi

echo "Sparkle framework structure verified OK"

echo "=== Injecting Sparkle framework ==="
FRAMEWORKS_DIR="$APP_PATH/Contents/Frameworks"
mkdir -p "$FRAMEWORKS_DIR"

# Remove any existing Sparkle.framework in the app
rm -rf "$FRAMEWORKS_DIR/Sparkle.framework"

# Copy Sparkle framework (use ditto to preserve symlinks and bundle structure)
ditto "$SPARKLE_DIR/Sparkle.framework" "$FRAMEWORKS_DIR/Sparkle.framework"

# Verify the copied framework still has proper structure
echo "=== Verifying copied Sparkle.framework structure ==="
ls -la "$FRAMEWORKS_DIR/Sparkle.framework/"
if [ ! -L "$FRAMEWORKS_DIR/Sparkle.framework/Sparkle" ]; then
    echo "ERROR: Copied framework lost symlink structure"
    exit 1
fi
echo "Copied framework structure OK"

echo "=== Updating Info.plist ==="
PLIST_PATH="$APP_PATH/Contents/Info.plist"

# Add Sparkle configuration to Info.plist
/usr/libexec/PlistBuddy -c "Delete :SUFeedURL" "$PLIST_PATH" 2>/dev/null || true
/usr/libexec/PlistBuddy -c "Add :SUFeedURL string '$SPARKLE_FEED_URL'" "$PLIST_PATH"

/usr/libexec/PlistBuddy -c "Delete :SUPublicEDKey" "$PLIST_PATH" 2>/dev/null || true
/usr/libexec/PlistBuddy -c "Add :SUPublicEDKey string '$SPARKLE_EDDSA_PUBLIC_KEY'" "$PLIST_PATH"

/usr/libexec/PlistBuddy -c "Delete :SUEnableAutomaticChecks" "$PLIST_PATH" 2>/dev/null || true
/usr/libexec/PlistBuddy -c "Add :SUEnableAutomaticChecks bool true" "$PLIST_PATH"

# Set bundle version from git for Sparkle version comparison
# Use commit count for automatic incrementing versions (e.g., 1.0.9548)
BUILD_NUMBER=$(git rev-list --count HEAD 2>/dev/null || echo "1")
VERSION="1.0.${BUILD_NUMBER}"

echo "Setting version: $VERSION (build $BUILD_NUMBER)"
/usr/libexec/PlistBuddy -c "Set :CFBundleShortVersionString $VERSION" "$PLIST_PATH" 2>/dev/null || \
    /usr/libexec/PlistBuddy -c "Add :CFBundleShortVersionString string '$VERSION'" "$PLIST_PATH"
/usr/libexec/PlistBuddy -c "Set :CFBundleVersion $BUILD_NUMBER" "$PLIST_PATH" 2>/dev/null || \
    /usr/libexec/PlistBuddy -c "Add :CFBundleVersion string '$BUILD_NUMBER'" "$PLIST_PATH"

# Add URL scheme for invitation codes (eagle0://invite?code=XXXX)
echo "=== Adding URL scheme for invitation codes ==="
/usr/libexec/PlistBuddy -c "Delete :CFBundleURLTypes" "$PLIST_PATH" 2>/dev/null || true
/usr/libexec/PlistBuddy -c "Add :CFBundleURLTypes array" "$PLIST_PATH"
/usr/libexec/PlistBuddy -c "Add :CFBundleURLTypes:0 dict" "$PLIST_PATH"
/usr/libexec/PlistBuddy -c "Add :CFBundleURLTypes:0:CFBundleURLName string 'net.eagle0.eagle0'" "$PLIST_PATH"
/usr/libexec/PlistBuddy -c "Add :CFBundleURLTypes:0:CFBundleURLSchemes array" "$PLIST_PATH"
/usr/libexec/PlistBuddy -c "Add :CFBundleURLTypes:0:CFBundleURLSchemes:0 string 'eagle0'" "$PLIST_PATH"

echo "=== Sparkle injection complete ==="
echo "App: $APP_PATH"
echo "Feed URL: $SPARKLE_FEED_URL"
echo "Version: $VERSION (build $BUILD_NUMBER)"