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/*
 * Copyright 2014-2020 chronicle.software
 *
 *       https://chronicle.software
 *
 * Licensed 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 net.openhft.chronicle.logger.log4j2;

import net.openhft.chronicle.logger.ChronicleLogWriter;
import net.openhft.chronicle.logger.DefaultChronicleLogWriter;
import net.openhft.chronicle.logger.LogAppenderConfig;
import org.apache.logging.log4j.core.Filter;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
import org.apache.logging.log4j.core.config.plugins.PluginElement;
import org.apache.logging.log4j.core.config.plugins.PluginFactory;
import org.jetbrains.annotations.NotNull;

import java.io.IOException;

@Plugin(
        name = "Chronicle",
        category = "Core",
        elementType = "appender",
        printObject = true)
public class ChronicleAppender extends AbstractChronicleAppender {

    private final ChronicleCfg config;

    public ChronicleAppender(final String name, final Filter filter, final String path, final String wireType, final ChronicleCfg config) {
        super(name, filter, path, wireType);

        this.config = config != null ? config : new ChronicleCfg();
    }

    // *************************************************************************
    //
    // *************************************************************************

    @PluginFactory
    public static ChronicleAppender createAppender(
            @PluginAttribute("name") final String name,
            @PluginAttribute("path") final String path,
            @PluginAttribute("wireType") final String wireType,
            @PluginElement("chronicleCfg") final ChronicleCfg chronicleConfig,
            @PluginElement("filter") final Filter filter) {
        if (name == null) {
            LOGGER.error("No name provided for ChronicleAppender");
            return null;
        }

        if (path == null) {
            LOGGER.error("No path provided for ChronicleAppender");
            return null;
        }

        return new ChronicleAppender(name, filter, path, wireType, chronicleConfig);
    }

    @Override
    public void doAppend(@NotNull final LogEvent event, @NotNull final ChronicleLogWriter writer) {
        writer.write(
                toChronicleLogLevel(event.getLevel()),
                event.getTimeMillis(),
                event.getThreadName(),
                event.getLoggerName(),
                event.getMessage().getFormattedMessage(),
                event.getThrown()
        );
    }

    @Override
    protected ChronicleLogWriter createWriter() throws IOException {
        return new DefaultChronicleLogWriter(config.build(getPath(), getWireType()));
    }

    // *************************************************************************
    //
    // *************************************************************************

    protected LogAppenderConfig getChronicleConfig() {
        return this.config;
    }
}