mailbox/tools/indexer/src/main/java/org/apache/mailbox/tools/indexer/MessageIdReIndexingTask.java

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package org.apache.mailbox.tools.indexer;

import java.time.Clock;
import java.time.Instant;
import java.util.Optional;

import javax.inject.Inject;

import org.apache.james.mailbox.model.MessageId;
import org.apache.james.task.Task;
import org.apache.james.task.TaskExecutionDetails;
import org.apache.james.task.TaskType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MessageIdReIndexingTask implements Task {
    private static final Logger LOGGER = LoggerFactory.getLogger(MessageIdReIndexingTask.class);

    public static final TaskType TYPE = TaskType.of("MessageIdReIndexingTask");

    public static class Factory {
        private ReIndexerPerformer reIndexerPerformer;
        private final MessageId.Factory messageIdFactory;

        @Inject
        public Factory(ReIndexerPerformer reIndexerPerformer, MessageId.Factory messageIdFactory) {
            this.reIndexerPerformer = reIndexerPerformer;
            this.messageIdFactory = messageIdFactory;
        }

        public MessageIdReIndexingTask create(MessageIdReindexingTaskDTO dto) {
            MessageId messageId = messageIdFactory.fromString(dto.getMessageId());
            return new MessageIdReIndexingTask(reIndexerPerformer, messageId);
        }
    }

    public static final class AdditionalInformation implements TaskExecutionDetails.AdditionalInformation {
        private final MessageId messageId;
        private final Instant timestamp;

        AdditionalInformation(MessageId messageId, Instant timestamp) {
            this.messageId = messageId;
            this.timestamp = timestamp;
        }

        public String getMessageId() {
            return messageId.serialize();
        }

        @Override
        public Instant timestamp() {
            return timestamp;
        }
    }


    private ReIndexerPerformer reIndexerPerformer;
    private final MessageId messageId;
    private final AdditionalInformation additionalInformation;

    MessageIdReIndexingTask(ReIndexerPerformer reIndexerPerformer, MessageId messageId) {
        this.reIndexerPerformer = reIndexerPerformer;
        this.messageId = messageId;
        this.additionalInformation = new AdditionalInformation(messageId, Clock.systemUTC().instant());
    }

    @Override
    public Result run() {
        return reIndexerPerformer.handleMessageIdReindexing(messageId);
    }

    @Override
    public TaskType type() {
        return TYPE;
    }

    MessageId getMessageId() {
        return messageId;
    }

    @Override
    public Optional<TaskExecutionDetails.AdditionalInformation> details() {
        return Optional.of(additionalInformation);
    }
}