// Cookie Consent Management
class CookieConsent {
    constructor() {
        this.cookieName = 'ninjacross_cookie_consent';
        this.cookieSettingsName = 'ninjacross_cookie_settings';
        this.consentGiven = false;
        this.settings = {
            necessary: true, // Always true, can't be disabled
            functional: false,
            analytics: false
        };
        
        this.init();
    }

    init() {
        // Check if consent was already given
        const savedConsent = this.getCookie(this.cookieName);
        const savedSettings = this.getCookie(this.cookieSettingsName);
        
        if (savedConsent === 'true') {
            this.consentGiven = true;
            if (savedSettings) {
                this.settings = { ...this.settings, ...JSON.parse(savedSettings) };
            }
            this.applySettings();
        } else {
            this.showConsentBanner();
        }
    }

    showConsentBanner() {
        // Don't show banner if already shown
        if (document.getElementById('cookie-consent-banner')) {
            return;
        }

        const banner = document.createElement('div');
        banner.id = 'cookie-consent-banner';
        banner.innerHTML = `
            <div class="cookie-banner">
                <div class="cookie-content">
                    <div class="cookie-icon">🍪</div>
                    <div class="cookie-text">
                        <h3>Cookie-Einstellungen</h3>
                        <p>Wir verwenden Cookies, um Ihnen die beste Erfahrung auf unserer Website zu bieten. Einige sind notwendig, andere helfen uns, die Website zu verbessern.</p>
                    </div>
                </div>
                <div class="cookie-actions">
                    <button id="cookie-settings-btn" class="btn-cookie-settings">Einstellungen</button>
                    <button id="cookie-accept-all" class="btn-cookie-accept">Alle akzeptieren</button>
                    <button id="cookie-accept-necessary" class="btn-cookie-necessary">Nur notwendige</button>
                </div>
            </div>
        `;

        // Add styles
        const style = document.createElement('style');
        style.textContent = `
            #cookie-consent-banner {
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
                color: white;
                z-index: 10000;
                box-shadow: 0 -4px 20px rgba(0,0,0,0.3);
                animation: slideUp 0.3s ease-out;
            }

            @keyframes slideUp {
                from { transform: translateY(100%); }
                to { transform: translateY(0); }
            }

            .cookie-banner {
                display: flex;
                align-items: center;
                justify-content: space-between;
                padding: 20px;
                max-width: 1200px;
                margin: 0 auto;
                gap: 20px;
            }

            .cookie-content {
                display: flex;
                align-items: center;
                gap: 15px;
                flex: 1;
            }

            .cookie-icon {
                font-size: 2rem;
                flex-shrink: 0;
            }

            .cookie-text h3 {
                margin: 0 0 5px 0;
                font-size: 1.1rem;
                color: white;
            }

            .cookie-text p {
                margin: 0;
                font-size: 0.9rem;
                opacity: 0.9;
                line-height: 1.4;
            }

            .cookie-actions {
                display: flex;
                gap: 10px;
                flex-shrink: 0;
            }

            .btn-cookie-settings,
            .btn-cookie-accept,
            .btn-cookie-necessary {
                padding: 10px 16px;
                border: none;
                border-radius: 6px;
                cursor: pointer;
                font-size: 0.9rem;
                font-weight: 500;
                transition: all 0.2s ease;
            }

            .btn-cookie-settings {
                background: rgba(255,255,255,0.2);
                color: white;
                border: 1px solid rgba(255,255,255,0.3);
            }

            .btn-cookie-settings:hover {
                background: rgba(255,255,255,0.3);
            }

            .btn-cookie-accept {
                background: #10b981;
                color: white;
            }

            .btn-cookie-accept:hover {
                background: #059669;
            }

            .btn-cookie-necessary {
                background: #6b7280;
                color: white;
            }

            .btn-cookie-necessary:hover {
                background: #4b5563;
            }

            @media (max-width: 768px) {
                .cookie-banner {
                    flex-direction: column;
                    text-align: center;
                    gap: 15px;
                }

                .cookie-content {
                    flex-direction: column;
                    text-align: center;
                }

                .cookie-actions {
                    flex-wrap: wrap;
                    justify-content: center;
                }
            }
        `;

        document.head.appendChild(style);
        document.body.appendChild(banner);

        // Add event listeners
        document.getElementById('cookie-accept-all').addEventListener('click', () => {
            this.acceptAll();
        });

        document.getElementById('cookie-accept-necessary').addEventListener('click', () => {
            this.acceptNecessary();
        });

        document.getElementById('cookie-settings-btn').addEventListener('click', () => {
            this.showSettingsModal();
        });
    }

    showSettingsModal() {
        // Remove banner
        const banner = document.getElementById('cookie-consent-banner');
        if (banner) {
            banner.remove();
        }

        // Create modal
        const modal = document.createElement('div');
        modal.id = 'cookie-settings-modal';
        modal.innerHTML = `
            <div class="cookie-modal-overlay">
                <div class="cookie-modal">
                    <div class="cookie-modal-header">
                        <h2>🍪 Cookie-Einstellungen</h2>
                        <button id="cookie-modal-close" class="btn-close">&times;</button>
                    </div>
                    <div class="cookie-modal-content">
                        <p>Wählen Sie aus, welche Cookies Sie zulassen möchten:</p>
                        
                        <div class="cookie-category">
                            <div class="cookie-category-header">
                                <h3>Notwendige Cookies</h3>
                                <label class="cookie-toggle">
                                    <input type="checkbox" id="necessary-cookies" checked disabled>
                                    <span class="toggle-slider"></span>
                                </label>
                            </div>
                            <p>Diese Cookies sind für die Grundfunktionen der Website erforderlich und können nicht deaktiviert werden.</p>
                        </div>

                        <div class="cookie-category">
                            <div class="cookie-category-header">
                                <h3>Funktionale Cookies</h3>
                                <label class="cookie-toggle">
                                    <input type="checkbox" id="functional-cookies" ${this.settings.functional ? 'checked' : ''}>
                                    <span class="toggle-slider"></span>
                                </label>
                            </div>
                            <p>Diese Cookies ermöglichen erweiterte Funktionen wie Benutzeranmeldung und Einstellungen.</p>
                        </div>

                        <div class="cookie-category">
                            <div class="cookie-category-header">
                                <h3>Analyse-Cookies</h3>
                                <label class="cookie-toggle">
                                    <input type="checkbox" id="analytics-cookies" ${this.settings.analytics ? 'checked' : ''}>
                                    <span class="toggle-slider"></span>
                                </label>
                            </div>
                            <p>Diese Cookies helfen uns zu verstehen, wie Besucher mit der Website interagieren.</p>
                        </div>
                    </div>
                    <div class="cookie-modal-footer">
                        <button id="cookie-save-settings" class="btn-save">Einstellungen speichern</button>
                        <button id="cookie-accept-all-modal" class="btn-accept-all">Alle akzeptieren</button>
                    </div>
                </div>
            </div>
        `;

        // Add modal styles
        const modalStyle = document.createElement('style');
        modalStyle.textContent = `
            .cookie-modal-overlay {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(0,0,0,0.5);
                z-index: 10001;
                display: flex;
                align-items: center;
                justify-content: center;
                padding: 20px;
            }

            .cookie-modal {
                background: white;
                border-radius: 12px;
                max-width: 600px;
                width: 100%;
                max-height: 80vh;
                overflow-y: auto;
                box-shadow: 0 20px 40px rgba(0,0,0,0.3);
                animation: modalSlideIn 0.3s ease-out;
            }

            @keyframes modalSlideIn {
                from { transform: scale(0.9); opacity: 0; }
                to { transform: scale(1); opacity: 1; }
            }

            .cookie-modal-header {
                display: flex;
                justify-content: space-between;
                align-items: center;
                padding: 20px;
                border-bottom: 1px solid #e2e8f0;
            }

            .cookie-modal-header h2 {
                margin: 0;
                color: #1e3c72;
            }

            .btn-close {
                background: none;
                border: none;
                font-size: 1.5rem;
                cursor: pointer;
                color: #6b7280;
                padding: 0;
                width: 30px;
                height: 30px;
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .btn-close:hover {
                color: #374151;
            }

            .cookie-modal-content {
                padding: 20px;
            }

            .cookie-category {
                margin-bottom: 20px;
                padding: 15px;
                border: 1px solid #e2e8f0;
                border-radius: 8px;
            }

            .cookie-category-header {
                display: flex;
                justify-content: space-between;
                align-items: center;
                margin-bottom: 10px;
            }

            .cookie-category-header h3 {
                margin: 0;
                color: #1e3c72;
                font-size: 1.1rem;
            }

            .cookie-category p {
                margin: 0;
                color: #6b7280;
                font-size: 0.9rem;
                line-height: 1.4;
            }

            .cookie-toggle {
                position: relative;
                display: inline-block;
                width: 50px;
                height: 24px;
            }

            .cookie-toggle input {
                opacity: 0;
                width: 0;
                height: 0;
            }

            .toggle-slider {
                position: absolute;
                cursor: pointer;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background-color: #ccc;
                transition: .4s;
                border-radius: 24px;
            }

            .toggle-slider:before {
                position: absolute;
                content: "";
                height: 18px;
                width: 18px;
                left: 3px;
                bottom: 3px;
                background-color: white;
                transition: .4s;
                border-radius: 50%;
            }

            .cookie-toggle input:checked + .toggle-slider {
                background-color: #1e3c72;
            }

            .cookie-toggle input:checked + .toggle-slider:before {
                transform: translateX(26px);
            }

            .cookie-toggle input:disabled + .toggle-slider {
                background-color: #10b981;
                cursor: not-allowed;
            }

            .cookie-modal-footer {
                padding: 20px;
                border-top: 1px solid #e2e8f0;
                display: flex;
                gap: 10px;
                justify-content: flex-end;
            }

            .btn-save, .btn-accept-all {
                padding: 10px 20px;
                border: none;
                border-radius: 6px;
                cursor: pointer;
                font-weight: 500;
                transition: all 0.2s ease;
            }

            .btn-save {
                background: #1e3c72;
                color: white;
            }

            .btn-save:hover {
                background: #2a5298;
            }

            .btn-accept-all {
                background: #10b981;
                color: white;
            }

            .btn-accept-all:hover {
                background: #059669;
            }

            @media (max-width: 768px) {
                .cookie-modal {
                    margin: 10px;
                    max-height: 90vh;
                }

                .cookie-modal-footer {
                    flex-direction: column;
                }

                .btn-save, .btn-accept-all {
                    width: 100%;
                }
            }
        `;

        document.head.appendChild(modalStyle);
        document.body.appendChild(modal);

        // Add event listeners
        document.getElementById('cookie-modal-close').addEventListener('click', () => {
            modal.remove();
            this.showConsentBanner();
        });

        document.getElementById('cookie-save-settings').addEventListener('click', () => {
            this.saveSettings();
            modal.remove();
        });

        document.getElementById('cookie-accept-all-modal').addEventListener('click', () => {
            this.acceptAll();
            modal.remove();
        });

        // Close on overlay click
        modal.querySelector('.cookie-modal-overlay').addEventListener('click', (e) => {
            if (e.target === e.currentTarget) {
                modal.remove();
                this.showConsentBanner();
            }
        });
    }

    saveSettings() {
        this.settings.functional = document.getElementById('functional-cookies').checked;
        this.settings.analytics = document.getElementById('analytics-cookies').checked;
        
        this.setCookie(this.cookieName, 'true', 365);
        this.setCookie(this.cookieSettingsName, JSON.stringify(this.settings), 365);
        
        this.consentGiven = true;
        this.applySettings();
    }

    acceptAll() {
        this.settings.functional = true;
        this.settings.analytics = true;
        
        this.setCookie(this.cookieName, 'true', 365);
        this.setCookie(this.cookieSettingsName, JSON.stringify(this.settings), 365);
        
        this.consentGiven = true;
        this.applySettings();
    }

    acceptNecessary() {
        this.settings.functional = false;
        this.settings.analytics = false;
        
        this.setCookie(this.cookieName, 'true', 365);
        this.setCookie(this.cookieSettingsName, JSON.stringify(this.settings), 365);
        
        this.consentGiven = true;
        this.applySettings();
    }

    applySettings() {
        // Remove banner if exists
        const banner = document.getElementById('cookie-consent-banner');
        if (banner) {
            banner.remove();
        }

        // Apply functional cookies
        if (this.settings.functional) {
            // Enable functional features
            console.log('Functional cookies enabled');
        } else {
            // Disable functional features
            console.log('Functional cookies disabled');
        }

        // Apply analytics cookies
        if (this.settings.analytics) {
            // Enable analytics
            console.log('Analytics cookies enabled');
            this.enableAnalytics();
        } else {
            // Disable analytics
            console.log('Analytics cookies disabled');
            this.disableAnalytics();
        }
    }

    enableAnalytics() {
        // Enable page tracking
        if (typeof trackPageView === 'function') {
            trackPageView('main_page_visit');
        }
    }

    disableAnalytics() {
        // Disable page tracking
        console.log('Analytics disabled by user choice');
    }

    setCookie(name, value, days) {
        const expires = new Date();
        expires.setTime(expires.getTime() + (days * 24 * 60 * 60 * 1000));
        document.cookie = `${name}=${value};expires=${expires.toUTCString()};path=/;SameSite=Lax`;
    }

    getCookie(name) {
        const nameEQ = name + "=";
        const ca = document.cookie.split(';');
        for (let i = 0; i < ca.length; i++) {
            let c = ca[i];
            while (c.charAt(0) === ' ') c = c.substring(1, c.length);
            if (c.indexOf(nameEQ) === 0) return c.substring(nameEQ.length, c.length);
        }
        return null;
    }

    // Public method to check if consent was given
    hasConsent() {
        return this.consentGiven;
    }

    // Public method to get current settings
    getSettings() {
        return { ...this.settings };
    }

    // Public method to reset consent
    resetConsent() {
        this.setCookie(this.cookieName, '', -1);
        this.setCookie(this.cookieSettingsName, '', -1);
        this.consentGiven = false;
        this.settings = {
            necessary: true,
            functional: false,
            analytics: false
        };
        this.showConsentBanner();
    }
}

// Initialize cookie consent when DOM is loaded
document.addEventListener('DOMContentLoaded', function() {
    window.cookieConsent = new CookieConsent();
});

// Export for use in other scripts
if (typeof module !== 'undefined' && module.exports) {
    module.exports = CookieConsent;
}