/**
 * 数字人直播系统 - Toast 消息提示组件
 */
(function() {
    'use strict';
    
    const Toast = {
        _animStyleAdded: false,
        
        _ensureAnimStyle() {
            if (this._animStyleAdded) return;
            const style = document.createElement('style');
            style.textContent = `
                @keyframes dhSlideInRight {
                    from { transform: translateX(100%); opacity: 0; }
                    to { transform: translateX(0); opacity: 1; }
                }
                @keyframes dhSlideOutRight {
                    from { transform: translateX(0); opacity: 1; }
                    to { transform: translateX(100%); opacity: 0; }
                }
            `;
            document.head.appendChild(style);
            this._animStyleAdded = true;
        },
        
        show(message, type = 'info', duration = 3000) {
            this._ensureAnimStyle();
            
            const colors = {
                success: '#4caf50',
                error: '#f44336',
                warning: '#ff9800',
                info: '#2196f3'
            };
            
            const toast = document.createElement('div');
            toast.style.cssText = `
                position: fixed;
                top: 20px;
                right: 20px;
                padding: 14px 24px;
                background: ${colors[type] || colors.info};
                color: white;
                border-radius: 8px;
                box-shadow: 0 4px 16px rgba(0,0,0,0.2);
                z-index: 99999;
                font-size: 14px;
                max-width: 400px;
                word-break: break-word;
                animation: dhSlideInRight 0.3s ease-out;
                pointer-events: auto;
            `;
            toast.textContent = message;
            document.body.appendChild(toast);
            
            setTimeout(() => {
                toast.style.animation = 'dhSlideOutRight 0.3s ease-out';
                setTimeout(() => toast.remove(), 300);
            }, duration);
        },
        
        success(msg, duration) { this.show(msg, 'success', duration); },
        error(msg, duration) { this.show(msg, 'error', duration); },
        warning(msg, duration) { this.show(msg, 'warning', duration); },
        info(msg, duration) { this.show(msg, 'info', duration); }
    };
    
    window.DigitalHumanToast = Toast;
    console.log('[数字人直播] Toast组件已加载');
})();