/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */

package org.elasticsearch.plugins;

import org.elasticsearch.Version;

import java.io.IOException;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Properties;

/** Utility methods for testing plugins */
public class PluginTestUtil {

    public static void writePluginProperties(Path pluginDir, String... stringProps) throws IOException {
        writeProperties(pluginDir.resolve(PluginDescriptor.INTERNAL_DESCRIPTOR_FILENAME), stringProps);
    }

    public static void writeStablePluginProperties(Path pluginDir, String... stringProps) throws IOException {
        writeProperties(pluginDir.resolve(PluginDescriptor.STABLE_DESCRIPTOR_FILENAME), stringProps);
    }

    public static void writeSimplePluginDescriptor(Path pluginDir, String name, String classname) throws IOException {
        PluginTestUtil.writePluginProperties(
            pluginDir,
            "description",
            "description",
            "name",
            name,
            "version",
            "1.0.0",
            "elasticsearch.version",
            Version.CURRENT.toString(),
            "java.version",
            System.getProperty("java.specification.version"),
            "classname",
            classname
        );
    }

    /** convenience method to write a plugin properties file */
    private static void writeProperties(Path propertiesFile, String... stringProps) throws IOException {
        assert stringProps.length % 2 == 0;
        Files.createDirectories(propertiesFile.getParent());
        Properties properties = new Properties();
        for (int i = 0; i < stringProps.length; i += 2) {
            String value = stringProps[i + 1];
            if (value != null) {
                properties.put(stringProps[i], stringProps[i + 1]);
            }
        }
        try (OutputStream out = Files.newOutputStream(propertiesFile)) {
            properties.store(out, "");
        }
    }

    public static void writeNamedComponentsFile(Path pluginDir, String namedComponentsJson) throws IOException {
        Path namedComponentsFile = pluginDir.resolve(PluginDescriptor.NAMED_COMPONENTS_FILENAME);
        Files.writeString(namedComponentsFile, namedComponentsJson);
    }
}
