/**
 * Event Handlers - Setup and manage UI event listeners
 */

import { displayMainImage } from './imageDisplay.js';
import { classifyImage, navigateEmbryo } from './workflow.js';
import { setupZoomListeners } from './zoom.js';
import { readFileAsDataURL } from '../utils/imageUtils.js';
import { appState } from '../state.js';

/**
 * Setup all UI event listeners
 */
export function setupEventListeners() {
    setupZoomListeners();
    setupImageUploadListeners();
    setupWorkflowListeners();
}

/**
 * Setup image upload listeners
 */
function setupImageUploadListeners() {
    // Main workflow image upload
    const imageInput = document.getElementById('imageInput');
    if (imageInput) {
        imageInput.addEventListener('change', (e) => handleImageUpload(e));
    }
}

/**
 * Setup workflow listeners
 */
function setupWorkflowListeners() {
    // No longer needed - inline detection handles its own interactions
}

/**
 * Handle image upload - auto-classify
 */
async function handleImageUpload(event) {
    const file = event.target.files[0];
    if (!file) return;
    
    // Validate file type
    const validTypes = ['image/jpeg', 'image/jpg', 'image/png', 'image/webp', 'image/bmp'];
    if (!validTypes.includes(file.type.toLowerCase())) {
        import('./toast.js').then(module => {
            module.showToast('Please upload a valid image file (JPEG, PNG, WebP, or BMP)', 'error');
        });
        event.target.value = '';
        return;
    }
    
    // Validate file size (max 10MB)
    const maxSize = 10 * 1024 * 1024; // 10MB in bytes
    if (file.size > maxSize) {
        import('./toast.js').then(module => {
            module.showToast('Image file is too large. Please upload an image smaller than 10MB', 'error');
        });
        event.target.value = '';
        return;
    }
    
    try {
        const imageData = await readFileAsDataURL(file);
        await displayMainImage(imageData);
        
        // Auto-trigger classification
        await classifyImage(imageData);
    } catch (error) {
        console.error('Image upload error:', error);
        import('./toast.js').then(module => {
            module.showToast(`Failed to load image: ${error.message}`, 'error');
        });
        event.target.value = '';
    }
}