server/task/task-distributed/src/main/java/org/apache/james/task/eventsourcing/distributed/TasksSerializationModule.java

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package org.apache.james.task.eventsourcing.distributed;

import java.util.List;
import java.util.function.BiFunction;
import java.util.stream.Stream;

import org.apache.james.eventsourcing.eventstore.cassandra.dto.EventDTOModule;
import org.apache.james.server.task.json.JsonTaskAdditionalInformationsSerializer;
import org.apache.james.server.task.json.JsonTaskSerializer;
import org.apache.james.task.eventsourcing.AdditionalInformationUpdated;
import org.apache.james.task.eventsourcing.CancelRequested;
import org.apache.james.task.eventsourcing.Cancelled;
import org.apache.james.task.eventsourcing.Completed;
import org.apache.james.task.eventsourcing.Created;
import org.apache.james.task.eventsourcing.Failed;
import org.apache.james.task.eventsourcing.Started;
import org.apache.james.task.eventsourcing.TaskEvent;

import com.github.steveash.guavate.Guavate;

public interface TasksSerializationModule {
    @FunctionalInterface
    interface TaskSerializationModuleFactory<T extends TaskEvent, U extends TaskEventDTO> {
        EventDTOModule<T, U> create(JsonTaskSerializer taskSerializer, JsonTaskAdditionalInformationsSerializer additionalInformationsSerializer);
    }

    TaskSerializationModuleFactory<Created, CreatedDTO> CREATED = (jsonTaskSerializer, jsonTaskAdditionalInformationsSerializer) -> EventDTOModule
        .forEvent(Created.class)
        .convertToDTO(CreatedDTO.class)
        .toDomainObjectConverter(dto -> dto.toDomainObject(jsonTaskSerializer))
        .toDTOConverter((event, typeName) -> CreatedDTO.fromDomainObject(event, typeName, jsonTaskSerializer))
        .typeName("task-manager-created")
        .withFactory(EventDTOModule::new);

    TaskSerializationModuleFactory<Started, StartedDTO> STARTED = (jsonTaskSerializer, jsonTaskAdditionalInformationsSerializer) -> EventDTOModule
        .forEvent(Started.class)
        .convertToDTO(StartedDTO.class)
        .toDomainObjectConverter(StartedDTO::toDomainObject)
        .toDTOConverter(StartedDTO::fromDomainObject)
        .typeName("task-manager-started")
        .withFactory(EventDTOModule::new);

    TaskSerializationModuleFactory<CancelRequested, CancelRequestedDTO> CANCEL_REQUESTED = (jsonTaskSerializer, jsonTaskAdditionalInformationsSerializer) -> EventDTOModule
        .forEvent(CancelRequested.class)
        .convertToDTO(CancelRequestedDTO.class)
        .toDomainObjectConverter(CancelRequestedDTO::toDomainObject)
        .toDTOConverter(CancelRequestedDTO::fromDomainObject)
        .typeName("task-manager-cancel-requested")
        .withFactory(EventDTOModule::new);

    TaskSerializationModuleFactory<Completed, CompletedDTO> COMPLETED = (jsonTaskSerializer, jsonTaskAdditionalInformationsSerializer) -> EventDTOModule
        .forEvent(Completed.class)
        .convertToDTO(CompletedDTO.class)
        .toDomainObjectConverter(dto -> dto.toDomainObject(jsonTaskAdditionalInformationsSerializer))
        .toDTOConverter((event, typeName) -> CompletedDTO.fromDomainObject(jsonTaskAdditionalInformationsSerializer, event, typeName))
        .typeName("task-manager-completed")
        .withFactory(EventDTOModule::new);

    TaskSerializationModuleFactory<Failed, FailedDTO> FAILED = (jsonTaskSerializer, jsonTaskAdditionalInformationsSerializer) -> EventDTOModule
        .forEvent(Failed.class)
        .convertToDTO(FailedDTO.class)
        .toDomainObjectConverter(dto -> dto.toDomainObject(jsonTaskAdditionalInformationsSerializer))
        .toDTOConverter((event, typeName) -> FailedDTO.fromDomainObject(jsonTaskAdditionalInformationsSerializer, event, typeName))
        .typeName("task-manager-failed")
        .withFactory(EventDTOModule::new);

    TaskSerializationModuleFactory<Cancelled, CancelledDTO> CANCELLED = (jsonTaskSerializer, jsonTaskAdditionalInformationsSerializer) -> EventDTOModule
        .forEvent(Cancelled.class)
        .convertToDTO(CancelledDTO.class)
        .toDomainObjectConverter(dto -> dto.toDomainObject(jsonTaskAdditionalInformationsSerializer))
        .toDTOConverter((event, typeName) -> CancelledDTO.fromDomainObject(jsonTaskAdditionalInformationsSerializer, event, typeName))
        .typeName("task-manager-cancelled")
        .withFactory(EventDTOModule::new);

    TaskSerializationModuleFactory<AdditionalInformationUpdated, AdditionalInformationUpdatedDTO> UPDATED = (jsonTaskSerializer, jsonTaskAdditionalInformationsSerializer) -> EventDTOModule
        .forEvent(AdditionalInformationUpdated.class)
        .convertToDTO(AdditionalInformationUpdatedDTO.class)
        .toDomainObjectConverter(dto -> dto.toDomainObject(jsonTaskAdditionalInformationsSerializer))
        .toDTOConverter((event, typeName) -> AdditionalInformationUpdatedDTO.fromDomainObject(jsonTaskAdditionalInformationsSerializer, event, typeName))
        .typeName("task-manager-updated")
        .withFactory(EventDTOModule::new);

    BiFunction<JsonTaskSerializer, JsonTaskAdditionalInformationsSerializer, List<EventDTOModule<?, ?>>> MODULES = (jsonTaskSerializer, jsonTaskAdditionalInformationsSerializer) -> Stream
        .of(CREATED, STARTED, CANCEL_REQUESTED, CANCELLED, COMPLETED, FAILED, UPDATED)
        .map(moduleFactory -> moduleFactory.create(jsonTaskSerializer, jsonTaskAdditionalInformationsSerializer))
        .collect(Guavate.toImmutableList());
}