SavingsAccountApplicationTransitionApiJsonValidator.java

/**
 * 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.portfolio.savings.service;

import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.commons.lang.StringUtils;
import org.joda.time.LocalDate;
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.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

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

@Component
public final class SavingsAccountApplicationTransitionApiJsonValidator {

    private final FromJsonHelper fromApiJsonHelper;

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

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

    public void validateApproval(final String json) {

        if (StringUtils.isBlank(json)) { throw new InvalidJsonException(); }

        final Set<String> disbursementParameters = new HashSet<>(Arrays.asList("approvedOnDate", "note", "locale", "dateFormat"));

        final Type typeOfMap = new TypeToken<Map<String, Object>>() {}.getType();
        this.fromApiJsonHelper.checkForUnsupportedParameters(typeOfMap, json, disbursementParameters);

        final List<ApiParameterError> dataValidationErrors = new ArrayList<>();
        final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors).resource("savingsaccountapplication");

        final JsonElement element = this.fromApiJsonHelper.parse(json);
        final LocalDate approvedOnDate = this.fromApiJsonHelper.extractLocalDateNamed("approvedOnDate", element);
        baseDataValidator.reset().parameter("approvedOnDate").value(approvedOnDate).notNull();

        final String note = this.fromApiJsonHelper.extractStringNamed("note", element);
        baseDataValidator.reset().parameter("note").value(note).notExceedingLengthOf(1000);

        throwExceptionIfValidationWarningsExist(dataValidationErrors);
    }

    public void validateRejection(final String json) {

        if (StringUtils.isBlank(json)) { throw new InvalidJsonException(); }

        final Set<String> disbursementParameters = new HashSet<>(Arrays.asList("rejectedOnDate", "note", "locale", "dateFormat"));

        final Type typeOfMap = new TypeToken<Map<String, Object>>() {}.getType();
        this.fromApiJsonHelper.checkForUnsupportedParameters(typeOfMap, json, disbursementParameters);

        final List<ApiParameterError> dataValidationErrors = new ArrayList<>();
        final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors).resource("savingsaccountapplication");

        final JsonElement element = this.fromApiJsonHelper.parse(json);
        final LocalDate rejectedOnDate = this.fromApiJsonHelper.extractLocalDateNamed("rejectedOnDate", element);
        baseDataValidator.reset().parameter("rejectedOnDate").value(rejectedOnDate).notNull();

        final String note = this.fromApiJsonHelper.extractStringNamed("note", element);
        baseDataValidator.reset().parameter("note").value(note).notExceedingLengthOf(1000);

        throwExceptionIfValidationWarningsExist(dataValidationErrors);
    }

    public void validateApplicantWithdrawal(final String json) {

        if (StringUtils.isBlank(json)) { throw new InvalidJsonException(); }

        final Set<String> disbursementParameters = new HashSet<>(Arrays.asList("withdrawnOnDate", "note", "locale", "dateFormat"));

        final Type typeOfMap = new TypeToken<Map<String, Object>>() {}.getType();
        this.fromApiJsonHelper.checkForUnsupportedParameters(typeOfMap, json, disbursementParameters);

        final List<ApiParameterError> dataValidationErrors = new ArrayList<>();
        final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors).resource("savingsaccountapplication");

        final JsonElement element = this.fromApiJsonHelper.parse(json);
        final LocalDate withdrawnOnDate = this.fromApiJsonHelper.extractLocalDateNamed("withdrawnOnDate", element);
        baseDataValidator.reset().parameter("withdrawnOnDate").value(withdrawnOnDate).notNull();

        final String note = this.fromApiJsonHelper.extractStringNamed("note", element);
        baseDataValidator.reset().parameter("note").value(note).notExceedingLengthOf(1000);

        throwExceptionIfValidationWarningsExist(dataValidationErrors);
    }

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

        final Set<String> undoSupportedParameters = new HashSet<>(Arrays.asList("note"));
        final Type typeOfMap = new TypeToken<Map<String, Object>>() {}.getType();
        this.fromApiJsonHelper.checkForUnsupportedParameters(typeOfMap, json, undoSupportedParameters);

        final List<ApiParameterError> dataValidationErrors = new ArrayList<>();
        final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors)
                .resource("savingsaccountapplication.undo");
        final JsonElement element = this.fromApiJsonHelper.parse(json);

        final String note = "note";
        if (this.fromApiJsonHelper.parameterExists(note, element)) {
            final String noteText = this.fromApiJsonHelper.extractStringNamed(note, element);
            baseDataValidator.reset().parameter(note).value(noteText).notExceedingLengthOf(1000);
        }

        if (!dataValidationErrors.isEmpty()) { throw new PlatformApiDataValidationException(dataValidationErrors); }
    }
}