/*
 * Copyright © 2020 Atomist, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { SdmGoalState } from "../../typings/types";

/**
 * Result from goal execution with additional details that will be
 * persisted on the currently executing goal.
 */
export interface GoalDetails {
    /**
     * Optional description to be set on the goal
     */
    description?: string;

    /**
     * Optional state for the goal
     */
    state?: SdmGoalState;

    /**
     * Optional phase to return from the goal execution
     */
    phase?: string;

    /**
     * Optional externalUrls to be set on the goal
     */
    externalUrls?: Array<{ label?: string; url: string }>;

    /**
     * Update the goals data field
     */
    data?: string;
}

/**
 * Result from goal execution.
 *
 * Instead of returning ExecuteGoalResult, it is ok to throw an Error
 * to signal errors during goal execution.
 */
export interface ExecuteGoalResult extends GoalDetails {
    /**
     * 0, undefined or null is success; non-zero exit codes will mark the goal as failed,
     * if state is not defined
     */
    code?: number;

    /**
     * The simple text message describing the result
     */
    message?: string;
}

/**
 * Assert if a given ExecuteGoalResult describe a successful result
 * @param result
 */
export function isSuccess(result: ExecuteGoalResult | void): boolean {
    if (result) {
        if (!result.code) {
            return true;
        }
        return false;
    }
    return true;
}

/**
 * Assert if a given ExecuteGoalResult describe a failure result
 * @param result
 */
export function isFailure(result: ExecuteGoalResult | void): boolean {
    return !isSuccess(result);
}