#!/usr/bin/env node

/**
 * 🔥 TILED AUTO-SYNC WATCHER
 * Spremlja Faza1_Finalna.tmx in avtomatsko exporta v JSON + reload Electron
 */

const fs = require('fs');
const path = require('path');
const { exec } = require('child_process');

const WATCH_FILE = path.join(__dirname, 'assets/maps/Faza1_Finalna.tmx');
const JSON_OUTPUT = path.join(__dirname, 'assets/maps/Faza1_Finalna.json');
const TILED_CLI = '/Applications/Tiled.app/Contents/MacOS/tiled'; // Mac path

let isProcessing = false;
let lastModified = 0;

console.log('🔥 TILED AUTO-SYNC WATCHER STARTED');
console.log(`📂 Watching: ${WATCH_FILE}`);
console.log(`📤 Output: ${JSON_OUTPUT}`);
console.log(`⚡ Auto-Reload: ENABLED\n`);

// Function to export TMX to JSON using Tiled CLI
function exportToJSON() {
    if (isProcessing) return;
    isProcessing = true;

    console.log('🔄 Change detected! Exporting TMX → JSON...');

    const exportCmd = `"${TILED_CLI}" --export-map json "${WATCH_FILE}" "${JSON_OUTPUT}"`;

    exec(exportCmd, (error, stdout, stderr) => {
        if (error) {
            console.error('❌ Export failed:', error.message);
            console.log('💡 Tip: Check if Tiled is installed at:', TILED_CLI);
            isProcessing = false;
            return;
        }

        if (stderr && !stderr.includes('QStandardPaths')) {
            console.warn('⚠️ Export warning:', stderr);
        }

        console.log('✅ JSON exported successfully!');
        console.log('⚡ Electron will auto-reload on Cmd+R\n');
        console.log('👀 Waiting for changes...\n');

        isProcessing = false;
    });
}

// Watch for file changes
fs.watchFile(WATCH_FILE, { interval: 500 }, (curr, prev) => {
    // Only trigger if file was actually modified (not just accessed)
    if (curr.mtime.getTime() !== lastModified) {
        lastModified = curr.mtime.getTime();

        // Debounce - wait 100ms to avoid multiple triggers
        setTimeout(() => {
            exportToJSON();
        }, 100);
    }
});

// Initial message
console.log('👀 Watching for changes in Tiled map...');
console.log('💡 Save in Tiled (Cmd+S) → Auto-export → Cmd+R in Electron\n');

// Keep process running
process.on('SIGINT', () => {
    console.log('\n🛑 Watcher stopped.');
    process.exit(0);
});