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using Gee;
using Gtk;

using Dino.Entities;
using Xmpp;

namespace Dino.Ui.OccupantMenu {
public class View : Popover {

    private StreamInteractor stream_interactor;
    private Conversation conversation;

    private Stack stack = new Stack() { vhomogeneous=false };
    private Box list_box = new Box(Orientation.VERTICAL, 1);
    private List? list = null;
    private ListBox invite_list = new ListBox();
    private Box? jid_menu = null;

    private Jid? selected_jid;

    public View(StreamInteractor stream_interactor, Conversation conversation) {
        this.stream_interactor = stream_interactor;
        this.conversation = conversation;

        this.show.connect(initialize_list);

        invite_list.append(new ListRow.label("+", _("Invite")).get_widget());
        invite_list.can_focus = false;
        list_box.append(invite_list);
        invite_list.row_activated.connect(on_invite_clicked);

        stack.add_named(list_box, "list");
        set_child(stack);
        stack.visible_child_name = "list";

        hide.connect(reset);
    }

    public void reset() {
        stack.transition_type = StackTransitionType.NONE;
        stack.visible_child_name = "list";
        if (list != null) list.list_box.unselect_all();
        invite_list.unselect_all();
    }

    private void initialize_list() {
        if (list == null) {
            list = new List(stream_interactor, conversation);
            list_box.prepend(list);

            list.list_box.row_activated.connect((row) => {
                ListRow row_wrapper = list.row_wrappers[row.get_child()];
                show_menu(row_wrapper.jid, row_wrapper.name_label.label);
            });
        }
    }

    private void show_list() {
        if (list != null) list.list_box.unselect_all();
        stack.transition_type = StackTransitionType.SLIDE_RIGHT;
        stack.visible_child_name = "list";
    }

    private void show_menu(Jid jid, string name_) {
        selected_jid = jid;
        stack.transition_type = StackTransitionType.SLIDE_LEFT;

        string name = Markup.escape_text(name_);
        Jid? real_jid = stream_interactor.get_module(MucManager.IDENTITY).get_real_jid(jid, conversation.account);
        if (real_jid != null) name += "\n<span font=\'8\'>%s</span>".printf(Markup.escape_text(real_jid.bare_jid.to_string()));

        Box header_box = new Box(Orientation.HORIZONTAL, 5);
        header_box.append(new Image.from_icon_name("pan-start-symbolic"));
        header_box.append(new Label(name) { xalign=0, use_markup=true, hexpand=true });
        Button header_button = new Button() { has_frame=false };
        header_button.child = header_box;

        Box outer_box = new Box(Orientation.VERTICAL, 5);
        outer_box.append(header_button);
        header_button.clicked.connect(show_list);

        Button private_button = new Button.with_label(_("Start private conversation")) ;
        outer_box.append(private_button);
        private_button.clicked.connect(private_conversation_button_clicked);

        Jid? own_jid = stream_interactor.get_module(MucManager.IDENTITY).get_own_jid(conversation.counterpart, conversation.account);
        Xmpp.Xep.Muc.Role? role = stream_interactor.get_module(MucManager.IDENTITY).get_role(own_jid, conversation.account);

        if (role ==  Xmpp.Xep.Muc.Role.MODERATOR && stream_interactor.get_module(MucManager.IDENTITY).kick_possible(conversation.account, jid)) {
            Button kick_button = new Button.with_label(_("Kick")) ;
            outer_box.append(kick_button);
            kick_button.clicked.connect(kick_button_clicked);
        }
        if (stream_interactor.get_module(MucManager.IDENTITY).is_moderated_room(conversation.account, conversation.counterpart) && role ==  Xmpp.Xep.Muc.Role.MODERATOR){
            if (stream_interactor.get_module(MucManager.IDENTITY).get_role(selected_jid, conversation.account) ==  Xmpp.Xep.Muc.Role.VISITOR) {
                Button voice_button = new Button.with_label(_("Grant write permission")) ;
                outer_box.append(voice_button);
                voice_button.clicked.connect(() => 
                    voice_button_clicked("participant"));
            } 
            else if (stream_interactor.get_module(MucManager.IDENTITY).get_role(selected_jid, conversation.account) ==  Xmpp.Xep.Muc.Role.PARTICIPANT){
                Button voice_button = new Button.with_label(_("Revoke write permission")) ;
                outer_box.append(voice_button);
                voice_button.clicked.connect(() => 
                    voice_button_clicked("visitor"));
            }
            
        }

        if (jid_menu != null) stack.remove(jid_menu);
        stack.add_named(outer_box, "menu");
        stack.visible_child_name = "menu";
        jid_menu = outer_box;
    }

    private void private_conversation_button_clicked() {
        if (selected_jid == null) return;

        Conversation conversation = stream_interactor.get_module(ConversationManager.IDENTITY).create_conversation(selected_jid, conversation.account, Conversation.Type.GROUPCHAT_PM);
        stream_interactor.get_module(ConversationManager.IDENTITY).start_conversation(conversation);

        Application app = GLib.Application.get_default() as Application;
        app.controller.select_conversation(conversation);
    }

    private void kick_button_clicked() {
        if (selected_jid == null) return;

        stream_interactor.get_module(MucManager.IDENTITY).kick(conversation.account, conversation.counterpart, selected_jid.resourcepart);
    }

    private void voice_button_clicked(string role) {
        if (selected_jid == null) return;

        stream_interactor.get_module(MucManager.IDENTITY).change_role(conversation.account, conversation.counterpart, selected_jid.resourcepart, role);
    }

    private void on_invite_clicked() {
        hide();
        Gee.List<Account> acc_list = new ArrayList<Account>(Account.equals_func);
        acc_list.add(conversation.account);
        SelectContactDialog add_chat_dialog = new SelectContactDialog(stream_interactor, acc_list);
        add_chat_dialog.set_transient_for((Window) get_root());
        add_chat_dialog.title = _("Invite to Conference");
        add_chat_dialog.ok_button.label = _("Invite");
        add_chat_dialog.selected.connect((account, jid) => {
            stream_interactor.get_module(MucManager.IDENTITY).invite(conversation.account, conversation.counterpart, jid);
        });
        add_chat_dialog.present();
    }
}

}