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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2016-2021 Payara Foundation and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://github.com/payara/Payara/blob/main/LICENSE.txt
 * See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * The Payara Foundation designates this particular file as subject to the "Classpath"
 * exception as provided by the Payara Foundation in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
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 */
package fish.payara.micro.cmd.options;

import fish.payara.deployment.util.JavaArchiveUtils;

import java.text.MessageFormat;
import java.util.AbstractMap;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import java.util.Set;
import java.util.stream.Collectors;

/**
 * Class to specify the runtime options for Payara Micro
 *
 * @author steve
 */
public class RuntimeOptions {

    private final List> options;
    static ResourceBundle commandoptions = ResourceBundle.getBundle("commandoptions");
    static ResourceBundle commandlogstrings = ResourceBundle.getBundle("commandlogstrings");

    public static void printHelp() {
        ArrayList output = new ArrayList<>();
        for (RUNTIME_OPTION option : RUNTIME_OPTION.values()) {
            String entry = "--" + rightPad(option.name(), findLongestOption() + 3);
            entry += " ";
            try {
                entry += commandoptions.getString(option.name());
            } catch (MissingResourceException mre){
                //ignore as there is no description for this option
                System.err.println();
            }
            output.add(entry);
        }
        
        // alphabetise
        output.sort(String.CASE_INSENSITIVE_ORDER);
        for (String s : output){
            System.err.println(s);
        }
    }
    
    public List> getOptions() {
        return Collections.unmodifiableList(options);
    }
    
    public List getOption(RUNTIME_OPTION option) {
        return options.stream().filter(entry -> entry.getKey() == option).map(Map.Entry::getValue).collect(Collectors.toList());
    }
    
    public RuntimeOptions(String[] args) throws ValidationException {
        // parse the arguments into a match 
        options = new LinkedList<>();
        Set invalidArgs = new HashSet<>();
        for (int i = 0; i < args.length; i++) {
            String arg = args[i];
            if (arg.startsWith("--")) {
                // this is a command switch
                try {
                    RUNTIME_OPTION option = RUNTIME_OPTION.valueOf(arg.substring(2).toLowerCase());
                    String value = null;
                    if (option.hasFollowingValue()) {
                        if (!option.followingValueIsOptional()) {
                            // there is a second value
                            value = args[i+1];
                            i++;
                            if (value.startsWith("--")) {
                                throw new IndexOutOfBoundsException();
                            }
                            option.validate(value);
                        } else {
                            // If we're not at the end, and the next arg isn't a command option, validate it
                             if (i + 1 != args.length && !args[i + 1].startsWith("--")) {
                                 value = args[i+1];
                                 i++;
                                 option.validate(value);
                             }
                        }
                    }
                    options.add(new AbstractMap.SimpleImmutableEntry<>(option, value));
                } catch (IllegalArgumentException iae) {
                    throw new ValidationException(MessageFormat.format(commandlogstrings.getString("notValidArgument"), arg));
                } catch (IndexOutOfBoundsException ex) {
                    throw new ValidationException(MessageFormat.format(commandlogstrings.getString("expectedArgument"), arg));
                } catch (ValidationException ve) {
                    throw new ValidationException(arg + " " + ve.getMessage(), ve);
                }
            } else if (JavaArchiveUtils.hasJavaArchiveExtension(arg, false)) {
                // we have a "raw" deployment
                RUNTIME_OPTION.deploy.validate(arg);
                options.add(new AbstractMap.SimpleImmutableEntry<>(RUNTIME_OPTION.deploy, arg));
            } else {
                invalidArgs.add(arg);
            }
        }
        if (invalidArgs.size() > 0) {
            throw new ValidationException(MessageFormat.format(commandlogstrings.getString("notValidArguments"), String.join(",", invalidArgs)));
        }
    }
    
    private static int findLongestOption() {
        int longest = 0;

        for (RUNTIME_OPTION option : RUNTIME_OPTION.values()) {
            if (option.name().length() > longest) {
                longest = option.name().length();
            }
        }
        return longest;
    }

    private static String rightPad(String toPad, int paddedLength) {
        // return input if anything doesn't make sense
        if (null == toPad || toPad.length() >= paddedLength) {
            return toPad;
        }
        StringBuilder sb = new StringBuilder(toPad);
        for (int i = toPad.length(); i < paddedLength; i++) {
            sb.append(" ");
        }
        return sb.toString();
    }
}