/**
 * Auth Dialog System - ระบบกล่องแจ้งเตือนล็อกอิน
 * สำหรับแจ้งเตือนเมื่อผู้ใช้ยังไม่ได้ล็อกอิน
 */

class AuthDialog {
    constructor() {
        this.createStyles();
    }

    createStyles() {
        const styles = `
            .auth-dialog-overlay {
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background: rgba(0, 0, 0, 0.8);
                backdrop-filter: blur(5px);
                display: flex;
                align-items: center;
                justify-content: center;
                z-index: 15000;
                animation: auth-dialog-fade-in 0.3s ease-out;
            }

            .auth-dialog-box {
                background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
                border: 2px solid #333;
                border-radius: 12px;
                padding: 30px;
                max-width: 400px;
                width: 90%;
                box-shadow: 
                    0 20px 40px rgba(0, 0, 0, 0.5),
                    0 0 0 1px rgba(255, 255, 255, 0.1),
                    inset 0 1px 0 rgba(255, 255, 255, 0.1);
                animation: auth-dialog-slide-up 0.3s ease-out;
                text-align: center;
            }

            .auth-dialog-header {
                color: #e0e0e0;
                font-size: 18px;
                font-weight: 600;
                margin-bottom: 8px;
                padding-bottom: 15px;
                border-bottom: 1px solid #333;
            }

            .auth-dialog-message {
                color: #b0b0b0;
                font-size: 16px;
                line-height: 1.5;
                margin-bottom: 25px;
                margin-top: 15px;
            }

            .auth-dialog-button {
                background: linear-gradient(135deg, #0ea5e9, #0284c7);
                border: none;
                color: white;
                padding: 12px 24px;
                border-radius: 8px;
                font-size: 14px;
                font-weight: 600;
                cursor: pointer;
                transition: all 0.3s ease;
                box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
                min-width: 100px;
            }

            .auth-dialog-button:hover {
                background: linear-gradient(135deg, #0284c7, #0369a1);
                transform: translateY(-2px);
                box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
            }

            .auth-dialog-button:active {
                transform: translateY(0);
            }

            @keyframes auth-dialog-fade-in {
                from {
                    opacity: 0;
                }
                to {
                    opacity: 1;
                }
            }

            @keyframes auth-dialog-slide-up {
                from {
                    opacity: 0;
                    transform: translateY(30px) scale(0.9);
                }
                to {
                    opacity: 1;
                    transform: translateY(0) scale(1);
                }
            }
        `;

        // เพิ่ม CSS styles
        if (!document.getElementById('auth-dialog-styles')) {
            const styleElement = document.createElement('style');
            styleElement.id = 'auth-dialog-styles';
            styleElement.textContent = styles;
            document.head.appendChild(styleElement);
        }
    }

    show(options = {}) {
        const {
            title = 'ข้อความจาก chahuadev.com',
            message = 'กรุณาล็อกอินก่อนใช้งาน',
            buttonText = 'ตกลง'
        } = options;

        // ลบ dialog เก่าถ้ามี
        this.hide();

        // สร้าง dialog overlay
        const overlay = document.createElement('div');
        overlay.className = 'auth-dialog-overlay';
        overlay.id = 'auth-dialog-overlay';

        // สร้าง dialog box
        const dialog = document.createElement('div');
        dialog.className = 'auth-dialog-box';

        dialog.innerHTML = `
            <div class="auth-dialog-header">${title}</div>
            <div class="auth-dialog-message">${message}</div>
            <button class="auth-dialog-button" onclick="authDialog.hide()">${buttonText}</button>
        `;

        overlay.appendChild(dialog);
        document.body.appendChild(overlay);

        // ปิด dialog เมื่อคลิกข้างนอก
        overlay.addEventListener('click', (e) => {
            if (e.target === overlay) {
                this.hide();
            }
        });

        // ปิด dialog ด้วย ESC key
        const escapeHandler = (e) => {
            if (e.key === 'Escape') {
                this.hide();
                document.removeEventListener('keydown', escapeHandler);
            }
        };
        document.addEventListener('keydown', escapeHandler);
    }

    hide() {
        const overlay = document.getElementById('auth-dialog-overlay');
        if (overlay) {
            overlay.style.animation = 'auth-dialog-fade-in 0.2s ease-out reverse';
            setTimeout(() => {
                overlay.remove();
            }, 200);
        }
    }
}

// สร้าง instance ของ AuthDialog
window.authDialog = new AuthDialog();