using Adw;
using Gtk;

namespace Publicate {

    public class FileExplorer : Box {

        
        private ListBox file_list;
        private ScrolledWindow scroll_window;

        private Invercargill.Sequence<Ppub.Asset> assets;
        private Invercargill.Sequence<FileItem> file_items;

        public signal void asset_selected(Ppub.Asset asset);

        public Ppub.Asset? selected_asset {get; private set;}

        public FileExplorer() {
            scroll_window = new ScrolledWindow();
            scroll_window.hscrollbar_policy = PolicyType.NEVER;
            scroll_window.propagate_natural_width = true;
            append(scroll_window);

            create_list();
        }

        private void create_list() {
            file_list = new ListBox();
            scroll_window.child = file_list;
            file_list.row_activated.connect((row) => {
                var item = (FileItem)row;
                selected_asset = item.asset;
                asset_selected(item.asset);
            });
        }
        
        public void set_assets(Invercargill.Enumerable<Ppub.Asset> files) {

            create_list();

            assets = files.to_sequence();
            file_items = new Invercargill.Sequence<FileItem>();
            
            foreach(var asset in assets) {
                var item = new FileItem(asset);
                file_list.append(item);
                file_items.add(item);
            }
            
        }

        public void set_selected_item(string name) {
            var item = file_items.where(i => i.asset.name == name).first_or_default();
            file_list.select_row(item);
        }

    }

    public class FileItem : ActionRow {

        public Ppub.Asset asset {get; private set;}

        public FileItem(Ppub.Asset asset) {
            this.asset = asset;

            activatable = true;
            title = asset.name;
            subtitle = ContentType.get_description (asset.mimetype);
            
            var icon = new Image.from_gicon (ContentType.get_icon (asset.mimetype));
            add_prefix (icon);
        }
        

    }
}