// Cookie Utility Functions
class CookieManager {
    // Set a cookie
    static setCookie(name, value, days = 30) {
        const expires = new Date();
        expires.setTime(expires.getTime() + (days * 24 * 60 * 60 * 1000));
        document.cookie = `${name}=${value};expires=${expires.toUTCString()};path=/;SameSite=Lax`;
    }

    // Get a cookie
    static 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;
    }

    // Delete a cookie
    static deleteCookie(name) {
        document.cookie = `${name}=;expires=Thu, 01 Jan 1970 00:00:00 UTC;path=/;`;
    }

    // Check if cookies are enabled
    static areCookiesEnabled() {
        try {
            this.setCookie('test', 'test');
            const enabled = this.getCookie('test') === 'test';
            this.deleteCookie('test');
            return enabled;
        } catch (e) {
            return false;
        }
    }
}

// Location-specific cookie functions
class LocationCookieManager {
    static COOKIE_NAME = 'ninjacross_last_location';
    static COOKIE_EXPIRY_DAYS = 90; // 3 months

    // Save last selected location
    static saveLastLocation(locationId, locationName) {
        if (!locationId || !locationName) return;
        
        const locationData = {
            id: locationId,
            name: locationName,
            timestamp: new Date().toISOString()
        };
        
        try {
            CookieManager.setCookie(
                this.COOKIE_NAME, 
                JSON.stringify(locationData), 
                this.COOKIE_EXPIRY_DAYS
            );
            console.log('✅ Location saved to cookie:', locationName);
        } catch (error) {
            console.error('❌ Failed to save location to cookie:', error);
        }
    }

    // Get last selected location
    static getLastLocation() {
        try {
            const cookieValue = CookieManager.getCookie(this.COOKIE_NAME);
            if (!cookieValue) return null;
            
            const locationData = JSON.parse(cookieValue);
            
            // Check if cookie is not too old (optional: 30 days max)
            const cookieDate = new Date(locationData.timestamp);
            const maxAge = 30 * 24 * 60 * 60 * 1000; // 30 days in milliseconds
            if (Date.now() - cookieDate.getTime() > maxAge) {
                this.clearLastLocation();
                return null;
            }
            
            return locationData;
        } catch (error) {
            console.error('❌ Failed to parse location cookie:', error);
            this.clearLastLocation();
            return null;
        }
    }

    // Clear last location
    static clearLastLocation() {
        CookieManager.deleteCookie(this.COOKIE_NAME);
        console.log('🗑️ Location cookie cleared');
    }

    // Check if location cookie exists
    static hasLastLocation() {
        return this.getLastLocation() !== null;
    }
}

// Export for use in other scripts
window.CookieManager = CookieManager;
window.LocationCookieManager = LocationCookieManager;