/**
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/.
 */
package org.mifosplatform.organisation.workingdays.data;

import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.commons.lang.StringUtils;
import org.mifosplatform.infrastructure.core.data.ApiParameterError;
import org.mifosplatform.infrastructure.core.data.DataValidatorBuilder;
import org.mifosplatform.infrastructure.core.exception.InvalidJsonException;
import org.mifosplatform.infrastructure.core.exception.PlatformApiDataValidationException;
import org.mifosplatform.infrastructure.core.serialization.FromJsonHelper;
import org.mifosplatform.organisation.workingdays.api.WorkingDaysApiConstants;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import com.google.gson.JsonElement;
import com.google.gson.reflect.TypeToken;

@Component
public class WorkingDayValidator {

    private final FromJsonHelper fromApiJsonHelper;

    @Autowired
    public WorkingDayValidator(FromJsonHelper fromApiJsonHelper) {
        this.fromApiJsonHelper = fromApiJsonHelper;
    }

    public void validateForUpdate(final String json) {
        if (StringUtils.isBlank(json)) { throw new InvalidJsonException(); }

        final Type typeOfMap = new TypeToken<Map<String, Object>>() {}.getType();
        this.fromApiJsonHelper.checkForUnsupportedParameters(typeOfMap, json,
                WorkingDaysApiConstants.WORKING_DAYS_CREATE_OR_UPDATE_REQUEST_DATA_PARAMETERS);
        final JsonElement element = this.fromApiJsonHelper.parse(json);

        final List<ApiParameterError> dataValidationErrors = new ArrayList<>();

        final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors)
                .resource(WorkingDaysApiConstants.WORKING_DAYS_RESOURCE_NAME);

        final String recurrence = this.fromApiJsonHelper.extractStringNamed(WorkingDaysApiConstants.recurrence, element);
        baseDataValidator.reset().parameter(WorkingDaysApiConstants.recurrence).value(recurrence).notNull();

        final Integer repaymentRescheduleType = this.fromApiJsonHelper.extractIntegerSansLocaleNamed("repaymentRescheduleType", element);
        baseDataValidator.reset().parameter("repaymentRescheduleType").value(repaymentRescheduleType).ignoreIfNull().inMinMaxRange(1, 4);

        final Boolean extendTermForDailyRepayments = this.fromApiJsonHelper.extractBooleanNamed("extendTermForDailyRepayments", element);
        baseDataValidator.reset().parameter(WorkingDaysApiConstants.extendTermForDailyRepayments).value(extendTermForDailyRepayments).ignoreIfNull().validateForBooleanValue();
        
        throwExceptionIfValidationWarningsExist(dataValidationErrors);

    }

    private void throwExceptionIfValidationWarningsExist(final List<ApiParameterError> dataValidationErrors) {
        if (!dataValidationErrors.isEmpty()) {
            //
            throw new PlatformApiDataValidationException(dataValidationErrors);
        }
    }
}