document.addEventListener('DOMContentLoaded', () => {
    const searchInput = document.getElementById('search-input');
    const searchForm = document.getElementById('search-form');

    if (searchInput && searchForm) {
        const performSearch = async (e) => {
            if (e) e.preventDefault();
            const query = searchInput.value.trim();
            if (!query) return;

            // Show loading state if possible, or just proceed
            
            // 1. Search Notes (Backend)
            let notes = [];
            try {
                const res = await fetch(`/api/search?q=${encodeURIComponent(query)}`);
                if (res.ok) {
                    notes = await res.json();
                } else {
                    console.error("Search API failed:", res.status);
                }
            } catch (e) {
                console.error("Search error:", e);
            }

            // If notes found, display them and stop (don't geocode)
            if (notes.length > 0) {
                if (window.displaySearchResults) {
                    window.displaySearchResults(notes, null, query);
                }
                return;
            }

            // 2. Fallback: Search Location (Nominatim) if no notes found
            let location = null;
            try {
                // Use local proxy to avoid CORS and set User-Agent
                const nomRes = await fetch(`/api/geocode?q=${encodeURIComponent(query)}`);
                const nomData = await nomRes.json();
                if (nomData && nomData.length > 0) {
                    location = {
                        lat: parseFloat(nomData[0].lat),
                        lng: parseFloat(nomData[0].lon)
                    };
                }
            } catch (e) {
                console.error("Geocoding error:", e);
            }

            // 3. Update UI via index.js helper
            if (window.displaySearchResults) {
                window.displaySearchResults(notes, location, query);
            }
        };

        // Handle Enter key on input & Search Button click
        searchForm.addEventListener('submit', performSearch);
    }
});