/*
 * Copyright © 2019 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 { Project } from "@atomist/automation-client/lib/project/Project";
import { StatefulPushListenerInvocation } from "../dsl/goalContribution";
import { PredicateMapping } from "./PredicateMapping";

/**
 * Special PushMapping. Return true if we like this push. Used in goal setting etc.
 */
export interface PushTest extends PredicateMapping<StatefulPushListenerInvocation> {

}

/**
 * Test against a project
 */
export type ProjectPredicate = (p: Project) => Promise<boolean>;

/**
 * Convenient factory function for PushTest instances
 * @param {string} name
 * @param mapping test function
 * @return {PushTest}
 */
export function pushTest(name: string, mapping: (p: StatefulPushListenerInvocation) => Promise<boolean>): PushTest {
    return {
        name,
        mapping,
    };
}

/**
 * PushTest that also exposes the ProjectPredicate it is
 * based on
 */
export interface PredicatePushTest extends PushTest {
    predicate: ProjectPredicate;
}

/**
 * Convenient factory function for PushTest instances based on project predicates.
 * Also exposes project predicate
 * @param {string} name
 * @param predicate test function for projects
 * @return {PushTest}
 */
export function predicatePushTest(name: string, predicate: ProjectPredicate): PredicatePushTest {
    return {
        name,
        mapping: pli => predicate(pli.project),
        predicate,
    };
}