#!/bin/bash

set -e

REPO_DIR="/home/pi/kiosk"
SYSTEMD_DIR="/etc/systemd/system"

cd "$REPO_DIR" || exit 1

echo "🔄 Pulling latest repo and tags..."
git fetch --tags origin
git fetch origin

# Determine latest tag
LATEST_TAG=$(git describe --tags "$(git rev-list --tags --max-count=1)" 2>/dev/null || echo "")

if [ -n "$LATEST_TAG" ]; then
    echo "➡️  Checking out latest tag: $LATEST_TAG"
    git checkout "$LATEST_TAG"
else
    echo "⚠️  No tags found — using main"
    git checkout main
    git pull origin main
fi

# Re-copy updated service and timer files
echo "📦 Updating systemd service files..."
sudo cp kiosk.service "$SYSTEMD_DIR/"
sudo cp update-kiosk.service "$SYSTEMD_DIR/"
sudo cp update-kiosk.timer "$SYSTEMD_DIR/"

echo "🔁 Reloading systemd..."
sudo systemctl daemon-reexec
sudo systemctl daemon-reload

echo "🚀 Restarting kiosk service..."
sudo systemctl restart kiosk.service

echo "✅ Update complete!"