/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.jena.arq.junit.textrunner;

import org.junit.platform.engine.TestExecutionResult;
import org.junit.platform.launcher.TestExecutionListener;
import org.junit.platform.launcher.TestIdentifier;
import org.junit.platform.launcher.TestPlan;

import org.apache.jena.atlas.io.IndentedWriter;

class PrintExecutionListener implements TestExecutionListener {

    // Skips outer containers:
    private int skip = 3;
    private int depth = 0 ;

    // Duplicates ExecutionStats but not exposes and we need the test count anyway.
    private int testCount = 0 ;
    private int containerCount = 0 ;
    private int errors = 0 ;
    private int successful = 0 ;
    private final IndentedWriter out;

    public PrintExecutionListener(IndentedWriter out) {
        this.out = out;
    }

    @Override
    public void testPlanExecutionStarted(TestPlan testPlan) {
        out.flush();
    }

    @Override
    public void testPlanExecutionFinished(TestPlan testPlan) {
        // Another way to print the summary but printed even
        // for an EARL report so rdftests --earl > earl.ttl does not work.
        //        out.println();
//        out.println("Containers: "+containerCount);
//        out.println("Successes:  "+successful);
//        out.println("Errors:     "+errors);
        out.flush();
    }

    @Override
    public void executionStarted(TestIdentifier testIdentifier) {
        // Container vs Test?
        // Not in walk order

        if ( testIdentifier.isContainer() ) {
            depth++;
            if ( depth > skip ) {
                containerCount++;
                out.println(testIdentifier.getDisplayName());
                out.incIndent();
            }
        } else {
            testCount++;
        }
    }

    @Override
    public void executionFinished(TestIdentifier testIdentifier, TestExecutionResult result) {
        if ( testIdentifier.isContainer() ) {
            if ( depth > skip )
                out.decIndent();
            depth--;
        } else {
            out.printf("%d [%s] %s\n", testCount, result.getStatus().name().substring(0, 1), testIdentifier.getDisplayName());
            // Summary
            switch(result.getStatus()) {
                case ABORTED->{}
                case FAILED ->  errors++;
                case SUCCESSFUL -> successful++;
            }
        }
    }
}
