// 설문 관리 관리자 JavaScript

document.addEventListener('DOMContentLoaded', function() {
    // 확인 대화상자
    const confirmButtons = document.querySelectorAll('[onclick*="confirm"]');
    confirmButtons.forEach(button => {
        button.addEventListener('click', function(e) {
            const message = this.getAttribute('onclick').match(/confirm\('([^']+)'\)/);
            if (message && !confirm(message[1])) {
                e.preventDefault();
                return false;
            }
        });
    });
    
    // 툴팁 초기화
    const tooltips = document.querySelectorAll('[title]');
    tooltips.forEach(element => {
        element.addEventListener('mouseenter', function() {
            const title = this.getAttribute('title');
            if (title) {
                this.setAttribute('data-original-title', title);
                this.removeAttribute('title');
                
                const tooltip = document.createElement('div');
                tooltip.className = 'tooltip';
                tooltip.textContent = title;
                tooltip.style.cssText = `
                    position: absolute;
                    background: #333;
                    color: white;
                    padding: 5px 10px;
                    border-radius: 4px;
                    font-size: 12px;
                    z-index: 1000;
                    pointer-events: none;
                `;
                
                document.body.appendChild(tooltip);
                
                const rect = this.getBoundingClientRect();
                tooltip.style.left = rect.left + (rect.width / 2) - (tooltip.offsetWidth / 2) + 'px';
                tooltip.style.top = rect.top - tooltip.offsetHeight - 5 + 'px';
                
                this._tooltip = tooltip;
            }
        });
        
        element.addEventListener('mouseleave', function() {
            if (this._tooltip) {
                document.body.removeChild(this._tooltip);
                this._tooltip = null;
            }
            
            const originalTitle = this.getAttribute('data-original-title');
            if (originalTitle) {
                this.setAttribute('title', originalTitle);
                this.removeAttribute('data-original-title');
            }
        });
    });
    
    // 자동 저장 기능 (폼이 있는 경우)
    const forms = document.querySelectorAll('form');
    forms.forEach(form => {
        const inputs = form.querySelectorAll('input, textarea, select');
        inputs.forEach(input => {
            input.addEventListener('change', function() {
                // 자동 저장 로직 (필요시 구현)
                console.log('Form data changed:', this.name, this.value);
            });
        });
    });
});

// 유틸리티 함수들
window.SurveyAdmin = window.SurveyAdmin || {
    // 숫자 포맷팅
    formatNumber: function(num) {
        return new Intl.NumberFormat('ko-KR').format(num);
    },
    
    // 날짜 포맷팅
    formatDate: function(dateString) {
        const date = new Date(dateString);
        return date.toLocaleDateString('ko-KR');
    },
    
    // 시간 포맷팅
    formatDateTime: function(dateString) {
        const date = new Date(dateString);
        return date.toLocaleString('ko-KR');
    },
    
    // AJAX 요청
    ajax: function(url, data, callback) {
        const xhr = new XMLHttpRequest();
        xhr.open('POST', url, true);
        xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        
        xhr.onreadystatechange = function() {
            if (xhr.readyState === 4) {
                if (xhr.status === 200) {
                    try {
                        const response = JSON.parse(xhr.responseText);
                        callback(null, response);
                    } catch (e) {
                        callback(null, xhr.responseText);
                    }
                } else {
                    callback(new Error('Request failed: ' + xhr.status));
                }
            }
        };
        
        const params = new URLSearchParams(data).toString();
        xhr.send(params);
    },
    
    // 알림 표시
    showAlert: function(message, type = 'info') {
        const alert = document.createElement('div');
        alert.className = `alert alert-${type}`;
        alert.textContent = message;
        alert.style.cssText = `
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 9999;
            min-width: 300px;
            animation: slideInRight 0.3s ease;
        `;
        
        document.body.appendChild(alert);
        
        setTimeout(() => {
            alert.style.animation = 'slideOutRight 0.3s ease';
            setTimeout(() => {
                if (alert.parentNode) {
                    alert.parentNode.removeChild(alert);
                }
            }, 300);
        }, 3000);
    },
    
    // 로딩 표시
    showLoading: function(show = true) {
        let loading = document.getElementById('loading-overlay');
        
        if (show) {
            if (!loading) {
                loading = document.createElement('div');
                loading.id = 'loading-overlay';
                loading.innerHTML = `
                    <div style="
                        position: fixed;
                        top: 0;
                        left: 0;
                        width: 100%;
                        height: 100%;
                        background: rgba(0,0,0,0.5);
                        display: flex;
                        align-items: center;
                        justify-content: center;
                        z-index: 9999;
                    ">
                        <div style="
                            background: white;
                            padding: 20px;
                            border-radius: 8px;
                            text-align: center;
                        ">
                            <div style="
                                width: 40px;
                                height: 40px;
                                border: 4px solid #f3f3f3;
                                border-top: 4px solid #AA20FF;
                                border-radius: 50%;
                                animation: spin 1s linear infinite;
                                margin: 0 auto 10px;
                            "></div>
                            <div>처리 중...</div>
                        </div>
                    </div>
                `;
                document.body.appendChild(loading);
            }
        } else {
            if (loading) {
                loading.parentNode.removeChild(loading);
            }
        }
    }
};

// CSS 애니메이션 추가
const style = document.createElement('style');
style.textContent = `
    @keyframes slideInRight {
        from { transform: translateX(100%); opacity: 0; }
        to { transform: translateX(0); opacity: 1; }
    }
    
    @keyframes slideOutRight {
        from { transform: translateX(0); opacity: 1; }
        to { transform: translateX(100%); opacity: 0; }
    }
    
    @keyframes spin {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }
`;
document.head.appendChild(style);