// *****************************************************************************
// Copyright (C) 2018 TypeFox 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 { injectable } from '@theia/core/shared/inversify';
import { WidgetOpenHandler, WidgetOpenerOptions } from '@theia/core/lib/browser';
import URI from '@theia/core/lib/common/uri';
import { GitCommitDetailWidgetOptions } from './git-commit-detail-widget-options';
import { GitCommitDetailWidget } from './git-commit-detail-widget';
import { GitScmProvider } from '../git-scm-provider';

export namespace GitCommitDetailUri {
    export const scheme = GitScmProvider.GIT_COMMIT_DETAIL;
    export function toCommitSha(uri: URI): string {
        if (uri.scheme === scheme) {
            return uri.fragment;
        }
        throw new Error('The given uri is not an commit detail URI, uri: ' + uri);
    }
}

export type GitCommitDetailOpenerOptions = WidgetOpenerOptions & GitCommitDetailWidgetOptions;

@injectable()
export class GitCommitDetailOpenHandler extends WidgetOpenHandler<GitCommitDetailWidget> {
    readonly id = GitScmProvider.GIT_COMMIT_DETAIL;

    canHandle(uri: URI): number {
        try {
            GitCommitDetailUri.toCommitSha(uri);
            return 200;
        } catch {
            return 0;
        }
    }

    protected createWidgetOptions(uri: URI, commit: GitCommitDetailOpenerOptions): GitCommitDetailWidgetOptions {
        return commit;
    }

}
