/*

 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package compiler.compilercontrol.share.actions;

import compiler.compilercontrol.share.scenario.State;

import jdk.test.lib.Pair;

import jdk.test.lib.ProcessTools;

import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.lang.reflect.Executable;

import java.net.InetAddress;

import java.net.Socket;

import java.util.Arrays;

import java.util.HashMap;

import java.util.List;

import java.util.ListIterator;

import java.util.Map;

import java.util.concurrent.Callable;

import java.util.stream.Collectors;

public class BaseAction {

    private static final List<Pair<Executable, Callable<?>>> METHODS;

    private static final Map<String, Executable> METHODS_NAMES;

    static {

        METHODS = new PoolHelper().getAllMethods();

        METHODS_NAMES = METHODS.stream().collect(Collectors.toMap(

                pair -> pair.first.toGenericString(),

                pair -> pair.first));

    }

    public static void main(String[] args) {

        new BaseAction().communicate(args);

    }

    /*

     * args[0] is a port to connect

     * args[1] is an optional parameter that shows that the state map should be

     *         passed

     */

    protected void communicate(String[] args) {

        if (args.length < 1) {

            throw new Error("TESTBUG: requires port as parameter: "

                    + Arrays.toString(args));

        }

        boolean getStates = false;

        if (args.length == 2) {

            if ("states".equals(args[1])) {

                getStates = true;

            } else {

                throw new Error("TESTBUG: incorrect argument: "+ args[1]);

            }

        }

        long pid;

        try {

            pid = ProcessTools.getProcessId();

        } catch (Exception e) {

            throw new Error("Could not determine own pid", e);

        }

        int port = Integer.parseInt(args[0]);

        System.out.println("INFO: Client connection port = " + port);

        List<String> lines;

        try (

                Socket socket = new Socket(InetAddress.getLocalHost(), port);

                BufferedReader in = new BufferedReader(

                        new InputStreamReader(socket.getInputStream()));

                PrintWriter out = new PrintWriter(

                        new OutputStreamWriter(socket.getOutputStream()))) {

            // send own pid to execute jcmd if needed

            out.println(String.valueOf(pid));

            out.flush();

            if (getStates) {

                lines = in.lines().collect(Collectors.toList());

                check(decodeMap(lines));

            } else {

                in.readLine();

            }

        } catch (IOException e) {

            throw new Error("Error on performing network operation", e);

        }

    }

    private Map<Executable, State> decodeMap(List<String> lines) {

        if (lines == null || lines.size() == 0) {

            throw new Error("TESTBUG: unexpected lines list");

        }

        Map<Executable, State> stateMap = new HashMap<>();

        int startIndex = 0;

        ListIterator<String> iterator = lines.listIterator();

        while (iterator.hasNext()) {

            int index = iterator.nextIndex();

            String next = iterator.next();

            switch (next) {

                case "{" :

                    startIndex = index;

                    break;

                case "}" :

                    // method name goes after {

                    Executable executable = METHODS_NAMES.get(lines.get(

                            ++startIndex));

                    // state description starts after method

                    State state = State.fromString(lines.subList(++startIndex,

                            index).toArray(new String[index - startIndex]));

                    stateMap.put(executable, state);

                    break;

            }

        }

        return stateMap;

    }

    protected void check(Map<Executable, State> methodStates) {

        // Check each method from the pool

        METHODS.forEach(pair -> {

            Executable x = pair.first;

            CompileAction.checkCompiled(x, methodStates.get(x));

        });

    }

}