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package org.apache.james.jmap.memory.vacation;

import java.util.HashMap;
import java.util.Map;

import org.apache.james.jmap.api.model.AccountId;
import org.apache.james.jmap.api.vacation.Vacation;
import org.apache.james.jmap.api.vacation.VacationPatch;
import org.apache.james.jmap.api.vacation.VacationRepository;

import com.google.common.base.Preconditions;

import reactor.core.publisher.Mono;

public class MemoryVacationRepository implements VacationRepository {

    private final Map<AccountId, Vacation> vacationMap;

    public MemoryVacationRepository() {
        this.vacationMap = new HashMap<>();
    }

    @Override
    public Mono<Vacation> retrieveVacation(AccountId accountId) {
        Preconditions.checkNotNull(accountId);
        return Mono.just(vacationMap.getOrDefault(accountId, DEFAULT_VACATION));
    }

    @Override
    public Mono<Void> modifyVacation(AccountId accountId, VacationPatch vacationPatch) {
        Preconditions.checkNotNull(accountId);
        Preconditions.checkNotNull(vacationPatch);
        return retrieveVacation(accountId)
            .doOnNext(oldVacation -> vacationMap.put(accountId, vacationPatch.patch(oldVacation)))
            .then();
    }


}
