/********************************************************************************
 * Copyright (c) 2023 EclipseSource 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 WITH Classpath-exception-2.0
 ********************************************************************************/

import { Action, AnyObject, hasArrayProp, hasBooleanProp, hasFunctionProp, hasStringProp } from '@eclipse-glsp/sprotty';

/**
 * Action to enable the tools of the specified `toolIds`.
 */
export interface EnableToolsAction extends Action {
    kind: typeof EnableToolsAction.KIND;
    toolIds: string[];
}
export namespace EnableToolsAction {
    export const KIND = 'enable-tools';

    export function is(object: unknown): object is EnableToolsAction {
        return Action.hasKind(object, KIND) && hasArrayProp(object, 'toolIds');
    }

    export function create(toolIds: string[]): EnableToolsAction {
        return {
            kind: KIND,
            toolIds
        };
    }
}

/**
 * Action to disable the currently active tools and enable the default tools instead.
 */
export interface EnableDefaultToolsAction extends Action {
    kind: typeof EnableDefaultToolsAction.KIND;
}
export namespace EnableDefaultToolsAction {
    export const KIND = 'enable-default-tools';

    export function is(object: unknown): object is EnableToolsAction {
        return Action.hasKind(object, KIND);
    }

    export function create(): EnableDefaultToolsAction {
        return {
            kind: KIND
        };
    }
}

/** A tool that can be managed by a `ToolManager`.
 */
export interface Tool {
    readonly id: string;
    /* Notifies the tool to become active. */
    enable(): void;
    /* Notifies the tool to become inactive. */
    disable(): void;
    /** Optional flag indicating wether this tool is an edit tool.
     *  Edit tools are inactive when a diagram is in `readonly` edit mode.
     */
    isEditTool?: boolean;
}

export namespace Tool {
    export function is(object: unknown): object is Tool {
        return (
            AnyObject.is(object) &&
            hasStringProp(object, 'id') &&
            hasFunctionProp(object, 'enable') &&
            hasFunctionProp(object, 'disable') &&
            hasBooleanProp(object, 'isEditTool', true)
        );
    }
}