// Custom dropdown component with liquid glass styling
// Replaces native select elements with styled custom dropdowns

/**
 * Initialize custom dropdowns for all select elements
 */
function initCustomDropdowns() {
    const selects = document.querySelectorAll('select');
    selects.forEach(select => {
        // Skip if already converted
        if (select.dataset.customDropdown === 'true') {
            return;
        }
        
        createCustomDropdown(select);
    });
}

/**
 * Create a custom dropdown for a select element
 */
function createCustomDropdown(select) {
    // Mark as converted
    select.dataset.customDropdown = 'true';
    
    // Create dropdown container
    const dropdownContainer = document.createElement('div');
    dropdownContainer.className = 'relative';
    
    // Create button
    const button = document.createElement('button');
    button.type = 'button';
    button.className = 'w-full px-3 py-2 border-2 border-gray-300/60 rounded-xl backdrop-blur-sm bg-white/40 focus:ring-2 focus:ring-indigo-500/50 focus:border-indigo-500/70 outline-none text-base transition-all shadow-sm text-left flex items-center justify-between';
    button.id = select.id + '_button';
    
    // Get selected option text
    const selectedOption = select.options[select.selectedIndex];
    const buttonText = document.createElement('span');
    buttonText.className = 'flex-1 text-gray-900';
    buttonText.textContent = selectedOption ? selectedOption.text : 'Select...';
    button.appendChild(buttonText);
    
    // Add chevron icon
    const chevron = document.createElement('svg');
    chevron.className = 'w-5 h-5 text-gray-400 flex-shrink-0 ml-2 transition-transform';
    chevron.id = select.id + '_chevron';
    chevron.fill = 'none';
    chevron.stroke = 'currentColor';
    chevron.viewBox = '0 0 24 24';
    chevron.innerHTML = '<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 9l-7 7-7-7"></path>';
    button.appendChild(chevron);
    
    // Create dropdown menu
    const menu = document.createElement('div');
    menu.className = 'hidden absolute z-50 w-full mt-1 backdrop-blur-xl bg-white/80 rounded-2xl shadow-2xl border border-white/30 overflow-hidden max-h-60 overflow-y-auto';
    menu.id = select.id + '_menu';
    
    // Create options
    Array.from(select.options).forEach((option, index) => {
        const menuItem = document.createElement('button');
        menuItem.type = 'button';
        menuItem.className = 'w-full text-left px-4 py-2.5 text-sm text-gray-700 hover:bg-white/40 focus:outline-none focus:bg-white/40 transition-colors';
        if (option.value === select.value) {
            menuItem.className += ' bg-indigo-50/50 text-indigo-600';
        }
        menuItem.textContent = option.text;
        menuItem.dataset.value = option.value;
        
        menuItem.addEventListener('click', () => {
            select.value = option.value;
            buttonText.textContent = option.text;
            select.dispatchEvent(new Event('change', { bubbles: true }));
            closeDropdown(select.id);
            
            // Update selected state
            menu.querySelectorAll('button').forEach(item => {
                if (item.dataset.value === option.value) {
                    item.className = 'w-full text-left px-4 py-2.5 text-sm text-indigo-600 bg-indigo-50/50 hover:bg-white/40 focus:outline-none focus:bg-white/40 transition-colors';
                } else {
                    item.className = 'w-full text-left px-4 py-2.5 text-sm text-gray-700 hover:bg-white/40 focus:outline-none focus:bg-white/40 transition-colors';
                }
            });
        });
        
        menu.appendChild(menuItem);
    });
    
    // Toggle dropdown
    button.addEventListener('click', (e) => {
        e.stopPropagation();
        const isOpen = !menu.classList.contains('hidden');
        
        // Close all other dropdowns
        document.querySelectorAll('[id$="_menu"]').forEach(m => {
            if (m.id !== menu.id) {
                m.classList.add('hidden');
                const otherChevron = document.getElementById(m.id.replace('_menu', '_chevron'));
                if (otherChevron) {
                    otherChevron.classList.remove('rotate-180');
                }
            }
        });
        
        if (isOpen) {
            closeDropdown(select.id);
        } else {
            openDropdown(select.id);
        }
    });
    
    // Close on outside click
    document.addEventListener('click', (e) => {
        if (!dropdownContainer.contains(e.target)) {
            closeDropdown(select.id);
        }
    });
    
    // Wrap select and add custom elements
    select.style.display = 'none';
    select.style.position = 'absolute';
    select.style.opacity = '0';
    select.style.pointerEvents = 'none';
    dropdownContainer.appendChild(button);
    dropdownContainer.appendChild(menu);
    select.parentNode.insertBefore(dropdownContainer, select);
    dropdownContainer.appendChild(select);
    
    // Listen for programmatic changes to select
    select.addEventListener('change', () => {
        updateCustomDropdown(select.id);
    });
}

/**
 * Open dropdown
 */
function openDropdown(selectId) {
    const menu = document.getElementById(selectId + '_menu');
    const chevron = document.getElementById(selectId + '_chevron');
    if (menu) {
        menu.classList.remove('hidden');
        if (chevron) {
            chevron.classList.add('rotate-180');
        }
    }
}

/**
 * Close dropdown
 */
function closeDropdown(selectId) {
    const menu = document.getElementById(selectId + '_menu');
    const chevron = document.getElementById(selectId + '_chevron');
    if (menu) {
        menu.classList.add('hidden');
        if (chevron) {
            chevron.classList.remove('rotate-180');
        }
    }
}

/**
 * Update custom dropdown when select value changes programmatically
 */
function updateCustomDropdown(selectId) {
    const select = document.getElementById(selectId);
    if (!select || select.dataset.customDropdown !== 'true') {
        return;
    }
    
    const button = document.getElementById(selectId + '_button');
    const buttonText = button?.querySelector('span');
    const selectedOption = select.options[select.selectedIndex];
    
    if (buttonText && selectedOption) {
        buttonText.textContent = selectedOption.text;
    }
    
    // Update selected state in menu
    const menu = document.getElementById(selectId + '_menu');
    if (menu) {
        menu.querySelectorAll('button').forEach(item => {
            if (item.dataset.value === select.value) {
                item.className = 'w-full text-left px-4 py-2.5 text-sm text-indigo-600 bg-indigo-50/50 hover:bg-white/40 focus:outline-none focus:bg-white/40 transition-colors';
            } else {
                item.className = 'w-full text-left px-4 py-2.5 text-sm text-gray-700 hover:bg-white/40 focus:outline-none focus:bg-white/40 transition-colors';
            }
        });
    }
}

// Make functions globally accessible
if (typeof window !== 'undefined') {
    window.initCustomDropdowns = initCustomDropdowns;
    window.createCustomDropdown = createCustomDropdown;
    window.updateCustomDropdown = updateCustomDropdown;
}