// *****************************************************************************
// Copyright (C) 2019 Red Hat, Inc. and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// http://www.eclipse.org/legal/epl-2.0.
//
// This Source Code may also be made available under the following Secondary
// Licenses when the conditions for such availability set forth in the Eclipse
// Public License v. 2.0 are satisfied: GNU General Public License, version 2
// with the GNU Classpath Exception which is available at
// https://www.gnu.org/software/classpath/license.html.
//
// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0
// *****************************************************************************

import { Command, CommandContribution, CommandRegistry } from '@theia/core/lib/common/command';
import { inject, injectable } from '@theia/core/shared/inversify';
import { UriAwareCommandHandler, UriCommandHandler } from '@theia/core/lib/common/uri-command-handler';
import URI from '@theia/core/lib/common/uri';
import { SelectionService } from '@theia/core';

export namespace SelectionProviderCommands {
    export const GET_SELECTED_CONTEXT: Command = {
        id: 'theia.plugin.workspace.selectedContext'
    };
}

@injectable()
export class SelectionProviderCommandContribution implements CommandContribution {

    @inject(SelectionService) protected readonly selectionService: SelectionService;

    registerCommands(commands: CommandRegistry): void {
        commands.registerCommand(SelectionProviderCommands.GET_SELECTED_CONTEXT, this.newMultiUriAwareCommandHandler({
            isEnabled: () => true,
            isVisible: () => false,
            execute: (selectedUris: URI[]) => selectedUris.map(uri => uri.toComponents())
        }));
    }

    protected newMultiUriAwareCommandHandler(handler: UriCommandHandler<URI[]>): UriAwareCommandHandler<URI[]> {
        return UriAwareCommandHandler.MultiSelect(this.selectionService, handler);
    }
}