/*
 * Copyright 2015 the original author or authors.
 *
 * 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.
 */

package org.gradle.play.integtest.fixtures

import org.gradle.integtests.fixtures.executer.GradleExecuter
import org.gradle.integtests.fixtures.executer.GradleHandle
import org.gradle.util.TextUtil


class CancellableGradleBuild {
    GradleExecuter executer
    PipedOutputStream userInput
    GradleHandle gradleHandle

    CancellableGradleBuild(GradleExecuter executer) {
        this.executer = executer
    }

    void start(String... tasks) {
        userInput = new PipedOutputStream();
        executer.withStdIn(new PipedInputStream(userInput))
        gradleHandle = executer.withTasks(tasks).start()
    }

    void cancel() {
        userInput.write(4)
        if (executer.isDaemon()) {
            // When running a test in a daemon executer, the input is buffered until a
            // newline char is received
            userInput.write(TextUtil.toPlatformLineSeparators("\n").bytes)
        }
        gradleHandle.waitForFinish()
    }
}
