/*
 * Copyright (c) 2002, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * 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
 */

package servletonly.client;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;

public class TestClient {

    /* to test .reload look for a changed value from one run to the next */
    private String changeableValue = null;
    private String expectedChangeableValue = null;

    public static void main (String[] args) {
        TestClient client = new TestClient();
        client.doTest(args);
    }

    public void doTest(String[] args) {

        String url = args[0];
        if (args.length > 2) {
            expectedChangeableValue = args[2];
        }
        boolean testPositive = (Boolean.valueOf(args[1])).booleanValue();
        try {
            log("Test: devtests/deployment/war/servletonly");
            int code = invokeServlet(url);
            report(code, testPositive, expectedChangeableValue, changeableValue);
        } catch (IOException ex) {
            if (testPositive) {
                ex.printStackTrace();
                fail();
            } else {
                log("Caught EXPECTED IOException: " + ex);
                pass();
            }
        } catch (Exception e) {
            e.printStackTrace();
            fail();
        }
    }

    private int invokeServlet(String url) throws Exception {
        log("Invoking URL = " + url);
        URL u = new URL(url);
        HttpURLConnection c1 = (HttpURLConnection)u.openConnection();
        int code = c1.getResponseCode();
        InputStream is = c1.getInputStream();
        BufferedReader input = new BufferedReader (new InputStreamReader(is));
        String line = null;
        while ((line = input.readLine()) != null) {
            log(line);
            if (line.startsWith("changeableValue=")) {
                changeableValue = line.substring("changeableValue=".length());
            }
        }
        return code;
    }

    private void report(int code, boolean testPositive, String expectedChangeableValue, String changeableValue) {
        if (testPositive) { //expect return code 200
            if(code != 200) {
                log("Incorrect return code: " + code);
                fail();
            } else {
                log("Correct return code: " + code);
                if (expectedChangeableValue != null && expectedChangeableValue.length() > 0 &&
                        ! expectedChangeableValue.equals("${extra.args}")) {
                    if (expectedChangeableValue.equals(changeableValue)) {
                        log("Correct changeable value: " + changeableValue);
                        pass();
                    } else {
                        log("Incorrect changeable value: expected " + expectedChangeableValue + " but found " + changeableValue);
                        fail();
                    }
                } else {
                    // No expected changeable value to check.
                    pass();
                }
            }
        } else {
            if(code != 200) { //expect return code !200
                log("Correct return code: " + code);
                pass();
            } else {
                log("Incorrect return code: " + code);
                fail();
            }
        }
    }

    private void log(String message) {
        System.err.println("[war.client.Client]:: " + message);
    }

    private void pass() {
        log("PASSED: devtests/deployment/war/servletonly");
        System.exit(0);
    }

    private void fail() {
        log("FAILED: devtests/deployment/war/servletonly");
        System.exit(-1);
    }
}