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 * distributed with this work for additional information        *
 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
 * "License"); you may not use this file except in compliance   *
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 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
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package org.apache.james.webadmin.service;

import javax.inject.Inject;

import org.apache.james.core.Username;
import org.apache.james.task.Task;
import org.apache.james.user.api.UsersRepository;
import org.apache.james.user.api.UsersRepositoryException;
import org.apache.james.webadmin.tasks.TaskFromRequestRegistry;
import org.apache.james.webadmin.tasks.TaskRegistrationKey;
import org.apache.james.webadmin.utils.ErrorResponder;
import org.eclipse.jetty.http.HttpStatus;

import spark.Request;

public class MailboxesExportRequestToTask extends TaskFromRequestRegistry.TaskRegistration {

    public static final TaskRegistrationKey TASK_REGISTRATION_KEY = TaskRegistrationKey.of("export");

    @Inject
    MailboxesExportRequestToTask(ExportService service,
                                 UsersRepository usersRepository) {

        super(TASK_REGISTRATION_KEY,
            request -> toTask(service, usersRepository, request));
    }

    private static Task toTask(ExportService service, UsersRepository usersRepository, Request request) throws UsersRepositoryException {
        Username username = Username.of(request.params("username"));
        if (usersRepository.contains(username)) {
            return new MailboxesExportTask(service, username);
        }

        throw ErrorResponder.builder()
            .type(ErrorResponder.ErrorType.NOT_FOUND)
            .statusCode(HttpStatus.NOT_FOUND_404)
            .message(String.format("User '%s' does not exist", username.asString()))
            .haltError();
    }
}
