/*
 * Search.vala
 * 
 * Widget for searching feed items
 */

namespace RSSuper {

    using Gtk;

    /**
     * Search - Widget for searching feed items
     */
    public class Search : WidgetBase {
        private SearchService search_service;
        private Entry search_entry;
        private Button search_button;
        private Label status_label;
        private ListView results_view;
        private ListStore results_store;
        private ScrolledWindow scrolled_window;

        public Search(SearchService search_service) {
            this.search_service = search_service;
            
            set_orientation(Orientation.VERTICAL);
            set_spacing(12);
            set_margin(20);
            
            var title_label = new Label("Search");
            title_label.add_css_class("heading");
            append(title_label);
            
            var search_box = new Box(Orientation.HORIZONTAL, 6);
            search_box.set_hexpand(true);
            
            search_entry = new Entry();
            search_entry.set_placeholder_text("Search feeds...");
            search_entry.set_hexpand(true);
            search_entry.activate += on_search;
            search_box.append(search_entry);
            
            search_button = new Button.with_label("Search");
            search_button.clicked += on_search;
            search_box.append(search_button);
            
            append(search_box);
            
            status_label = new Label(null);
            status_label.set_xalign(0);
            status_label.set_wrap(true);
            append(status_label);
            
            scrolled_window = new ScrolledWindow();
            scrolled_window.set_hexpand(true);
            scrolled_window.set_vexpand(true);
            
            results_store = new ListStore(1, typeof(string));
            results_view = new ListView(results_store);
            
            var factory = SignalListItemFactory.new();
            factory.setup += on_setup;
            factory.bind += on_bind;
            factory.unset += on_unset;
            results_view.set_factory(factory);
            
            scrolled_window.set_child(results_view);
            append(scrolled_window);
        }

        public override void initialize() {
            // Initialize with default state
        }

        protected override void update_from_state() {
            // Update from state if needed
        }

        private void on_search() {
            var query = search_entry.get_text();
            
            if (query.is_empty()) {
                status_label.set_text("Please enter a search query");
                return;
            }
            
            search_button.set_sensitive(false);
            status_label.set_text("Searching...");
            
            search_service.search(query, (state) => {
                if (state.is_success()) {
                    var results = state.get_data() as SearchResult[];
                    update_results(results);
                    status_label.set_text($"Found {results.length} results");
                } else if (state.is_error()) {
                    status_label.set_text($"Error: {state.get_message()}");
                }
                
                search_button.set_sensitive(true);
            });
        }

        private void on_setup(ListItem item) {
            var label = new Label(null);
            label.set_xalign(0);
            label.set_wrap(true);
            label.set_max_width_chars(80);
            item.set_child(label);
        }

        private void on_bind(ListItem item) {
            var label = item.get_child() as Label;
            var result = item.get_item() as SearchResult;
            
            if (result != null) {
                label.set_text(result.title);
            }
        }

        private void on_unset(ListItem item) {
            item.set_child(null);
        }

        private void update_results(SearchResult[] results) {
            results_store.splice(0, results_store.get_n_items(), results);
        }
    }
}