/**
 * LiveComponent UI Helper
 * 
 * Provides unified API for UI components (Dialogs, Modals, Notifications)
 * integrated with LiveComponents.
 */

import { UIManager } from '../ui/UIManager.js';

export class LiveComponentUIHelper {
    constructor(liveComponentManager) {
        this.manager = liveComponentManager;
        this.uiManager = UIManager;
        this.activeDialogs = new Map(); // componentId → dialog instances
        this.activeNotifications = new Map(); // componentId → notification instances
    }

    /**
     * Show dialog from LiveComponent action
     * 
     * @param {string} componentId - Component ID
     * @param {Object} options - Dialog options
     * @returns {Object} Dialog instance
     */
    showDialog(componentId, options = {}) {
        const {
            title = '',
            content = '',
            size = 'medium',
            buttons = [],
            closeOnBackdrop = true,
            closeOnEscape = true,
            onClose = null,
            onConfirm = null
        } = options;

        // Create dialog content
        const dialogContent = this.createDialogContent(title, content, buttons, {
            onClose,
            onConfirm
        });

        // Show modal via UIManager
        const modal = this.uiManager.open('modal', {
            content: dialogContent,
            className: `livecomponent-dialog livecomponent-dialog--${size}`,
            onClose: () => {
                if (onClose) {
                    onClose();
                }
                this.activeDialogs.delete(componentId);
            }
        });

        // Store reference
        this.activeDialogs.set(componentId, modal);

        return modal;
    }

    /**
     * Show confirmation dialog
     * 
     * @param {string} componentId - Component ID
     * @param {Object} options - Confirmation options
     * @returns {Promise<boolean>} Promise resolving to true if confirmed
     */
    showConfirm(componentId, options = {}) {
        return new Promise((resolve) => {
            const {
                title = 'Confirm',
                message = 'Are you sure?',
                confirmText = 'Confirm',
                cancelText = 'Cancel',
                confirmClass = 'btn-primary',
                cancelClass = 'btn-secondary'
            } = options;

            const buttons = [
                {
                    text: cancelText,
                    class: cancelClass,
                    action: () => {
                        this.closeDialog(componentId);
                        resolve(false);
                    }
                },
                {
                    text: confirmText,
                    class: confirmClass,
                    action: () => {
                        this.closeDialog(componentId);
                        resolve(true);
                    }
                }
            ];

            this.showDialog(componentId, {
                title,
                content: `<p>${message}</p>`,
                buttons,
                size: 'small'
            });
        });
    }

    /**
     * Show alert dialog
     * 
     * @param {string} componentId - Component ID
     * @param {Object} options - Alert options
     */
    showAlert(componentId, options = {}) {
        const {
            title = 'Alert',
            message = '',
            buttonText = 'OK',
            type = 'info' // info, success, warning, error
        } = options;

        const buttons = [
            {
                text: buttonText,
                class: `btn-${type}`,
                action: () => {
                    this.closeDialog(componentId);
                }
            }
        ];

        return this.showDialog(componentId, {
            title,
            content: `<p class="alert-message alert-message--${type}">${message}</p>`,
            buttons,
            size: 'small'
        });
    }

    /**
     * Close dialog
     * 
     * @param {string} componentId - Component ID
     */
    closeDialog(componentId) {
        const dialog = this.activeDialogs.get(componentId);
        if (dialog && typeof dialog.close === 'function') {
            dialog.close();
            this.activeDialogs.delete(componentId);
        }
    }

    /**
     * Show notification
     * 
     * @param {string} componentId - Component ID
     * @param {Object} options - Notification options
     */
    showNotification(componentId, options = {}) {
        const {
            message = '',
            type = 'info', // info, success, warning, error
            duration = 5000,
            position = 'top-right',
            action = null
        } = options;

        // Create notification element
        const notification = document.createElement('div');
        notification.className = `livecomponent-notification livecomponent-notification--${type} livecomponent-notification--${position}`;
        notification.setAttribute('role', 'alert');
        notification.setAttribute('aria-live', 'polite');

        notification.innerHTML = `
            <div class="notification-content">
                <span class="notification-message">${message}</span>
                ${action ? `<button class="notification-action">${action.text}</button>` : ''}
                <button class="notification-close" aria-label="Close">×</button>
            </div>
        `;

        // Add styles
        notification.style.cssText = `
            position: fixed;
            ${position.includes('top') ? 'top' : 'bottom'}: 1rem;
            ${position.includes('left') ? 'left' : 'right'}: 1rem;
            max-width: 400px;
            padding: 1rem;
            background: ${this.getNotificationColor(type)};
            color: white;
            border-radius: 0.5rem;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            z-index: 10000;
            opacity: 0;
            transform: translateY(${position.includes('top') ? '-20px' : '20px'});
            transition: opacity 0.3s ease, transform 0.3s ease;
        `;

        // Add to DOM
        document.body.appendChild(notification);

        // Animate in
        requestAnimationFrame(() => {
            notification.style.opacity = '1';
            notification.style.transform = 'translateY(0)';
        });

        // Setup close button
        const closeBtn = notification.querySelector('.notification-close');
        closeBtn.addEventListener('click', () => {
            this.hideNotification(notification);
        });

        // Setup action button
        if (action) {
            const actionBtn = notification.querySelector('.notification-action');
            actionBtn.addEventListener('click', () => {
                if (action.handler) {
                    action.handler();
                }
                this.hideNotification(notification);
            });
        }

        // Auto-hide after duration
        if (duration > 0) {
            setTimeout(() => {
                this.hideNotification(notification);
            }, duration);
        }

        // Store reference
        this.activeNotifications.set(componentId, notification);

        return notification;
    }

    /**
     * Hide notification
     * 
     * @param {HTMLElement|string} notificationOrComponentId - Notification element or component ID
     */
    hideNotification(notificationOrComponentId) {
        const notification = typeof notificationOrComponentId === 'string'
            ? this.activeNotifications.get(notificationOrComponentId)
            : notificationOrComponentId;

        if (!notification) {
            return;
        }

        // Animate out
        notification.style.opacity = '0';
        notification.style.transform = `translateY(${notification.classList.contains('livecomponent-notification--top') ? '-20px' : '20px'})`;

        setTimeout(() => {
            if (notification.parentNode) {
                notification.parentNode.removeChild(notification);
            }

            // Remove from map
            for (const [componentId, notif] of this.activeNotifications.entries()) {
                if (notif === notification) {
                    this.activeNotifications.delete(componentId);
                    break;
                }
            }
        }, 300);
    }

    /**
     * Create dialog content HTML
     * 
     * @param {string} title - Dialog title
     * @param {string} content - Dialog content
     * @param {Array} buttons - Button configurations
     * @param {Object} callbacks - Callback functions
     * @returns {string} HTML content
     */
    createDialogContent(title, content, buttons, callbacks) {
        const buttonsHtml = buttons.map((btn, index) => {
            const btnClass = btn.class || 'btn-secondary';
            const btnAction = btn.action || (() => {});
            return `<button class="btn ${btnClass}" data-dialog-action="${index}">${btn.text || 'Button'}</button>`;
        }).join('');

        return `
            <div class="livecomponent-dialog-content">
                ${title ? `<div class="dialog-header"><h3>${title}</h3></div>` : ''}
                <div class="dialog-body">${content}</div>
                ${buttons.length > 0 ? `<div class="dialog-footer">${buttonsHtml}</div>` : ''}
            </div>
        `;
    }

    /**
     * Get notification color by type
     * 
     * @param {string} type - Notification type
     * @returns {string} Color value
     */
    getNotificationColor(type) {
        const colors = {
            info: '#3b82f6',
            success: '#10b981',
            warning: '#f59e0b',
            error: '#ef4444'
        };
        return colors[type] || colors.info;
    }

    /**
     * Show loading dialog
     * 
     * @param {string} componentId - Component ID
     * @param {string} message - Loading message
     * @returns {Object} Dialog instance
     */
    showLoadingDialog(componentId, message = 'Loading...') {
        return this.showDialog(componentId, {
            title: '',
            content: `
                <div class="loading-dialog">
                    <div class="spinner"></div>
                    <p>${message}</p>
                </div>
            `,
            size: 'small',
            buttons: [],
            closeOnBackdrop: false,
            closeOnEscape: false
        });
    }

    /**
     * Cleanup all UI components for component
     * 
     * @param {string} componentId - Component ID
     */
    cleanup(componentId) {
        // Close dialogs
        this.closeDialog(componentId);

        // Hide notifications
        this.hideNotification(componentId);
    }
}