import categorySyncer from './syncers/category-syncer.js';
import pictureSyncer from './syncers/picture-syncer.js';
import categoryProductsSyncer from './syncers/category-products-syncer.js';
import { startServer } from './server/server.js';

categorySyncer.on('synced', async ({ tree, unprunedTree, changed }) => {
    if (changed) {
        console.log('🎉 Event received: Category tree updated! Root nodes:', tree.length);
    } else {
        console.log('🎉 Event received: Sync finished (no changes). Checking images and products...');
    }

    // Extract all kBild IDs and kKategorie IDs from unpruned tree
    const imageIds = [];
    const categoryIds = [];
    const traverse = (nodes) => {
        for (const node of nodes) {
            if (node.kBild) {
                imageIds.push(node.kBild);
            }
            if (node.kKategorie) {
                categoryIds.push(node.kKategorie);
            }
            if (node.children && node.children.length > 0) {
                traverse(node.children);
            }
        }
    };
    traverse(unprunedTree);

    console.log(`🔍 Found ${imageIds.length} images and ${categoryIds.length} categories.`);
    
    await pictureSyncer.syncImages(imageIds, 'categories');
    await categoryProductsSyncer.syncProducts(categoryIds);
});

categoryProductsSyncer.on('categoryUpdated', ({ id, products }) => {
    console.log(`📝 Category ${id} updated. Products count: ${products.length}`);
});

// Trigger immediate sync
categorySyncer.triggerSync();

// Schedule periodic sync
const syncInterval = parseInt(process.env.SYNC_INTERVAL_MS) || 60000;
setInterval(() => {
    categorySyncer.triggerSync();
}, syncInterval);

// Handle graceful shutdown
process.on('SIGINT', () => {
    console.log('\n👋 Bye!');
    process.exit(0);
});

// Start Express server
startServer(categorySyncer, categoryProductsSyncer);