/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * 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
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.fineract.portfolio.savings.data;

import static org.apache.fineract.portfolio.savings.SavingsApiConstants.SAVINGS_ACCOUNT_RESOURCE_NAME;
import static org.apache.fineract.portfolio.savings.SavingsApiConstants.activatedOnDateParamName;
import static org.apache.fineract.portfolio.savings.SavingsApiConstants.bankNumberParamName;
import static org.apache.fineract.portfolio.savings.SavingsApiConstants.checkNumberParamName;
import static org.apache.fineract.portfolio.savings.SavingsApiConstants.closedOnDateParamName;
import static org.apache.fineract.portfolio.savings.SavingsApiConstants.lienAllowedParamName;
import static org.apache.fineract.portfolio.savings.SavingsApiConstants.paymentTypeIdParamName;
import static org.apache.fineract.portfolio.savings.SavingsApiConstants.receiptNumberParamName;
import static org.apache.fineract.portfolio.savings.SavingsApiConstants.routingCodeParamName;
import static org.apache.fineract.portfolio.savings.SavingsApiConstants.transactionAccountNumberParamName;
import static org.apache.fineract.portfolio.savings.SavingsApiConstants.transactionAmountParamName;
import static org.apache.fineract.portfolio.savings.SavingsApiConstants.transactionDateParamName;
import static org.apache.fineract.portfolio.savings.SavingsApiConstants.withdrawBalanceParamName;

import com.google.gson.JsonElement;
import com.google.gson.reflect.TypeToken;
import java.lang.reflect.Type;
import java.math.BigDecimal;
import java.time.LocalDate;
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 lombok.RequiredArgsConstructor;
import org.apache.commons.lang3.BooleanUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.fineract.infrastructure.configuration.domain.ConfigurationDomainService;
import org.apache.fineract.infrastructure.core.api.JsonCommand;
import org.apache.fineract.infrastructure.core.data.ApiParameterError;
import org.apache.fineract.infrastructure.core.data.DataValidatorBuilder;
import org.apache.fineract.infrastructure.core.exception.InvalidJsonException;
import org.apache.fineract.infrastructure.core.exception.PlatformApiDataValidationException;
import org.apache.fineract.infrastructure.core.serialization.FromJsonHelper;
import org.apache.fineract.infrastructure.core.service.DateUtils;
import org.apache.fineract.portfolio.savings.SavingsApiConstants;
import org.apache.fineract.portfolio.savings.domain.SavingsAccount;
import org.apache.fineract.portfolio.savings.domain.SavingsAccountSubStatusEnum;
import org.apache.fineract.portfolio.savings.domain.SavingsAccountTransaction;
import org.apache.fineract.portfolio.savings.exception.TransactionBeforePivotDateNotAllowed;
import org.apache.fineract.useradministration.domain.AppUser;
import org.springframework.stereotype.Component;

@Component
@RequiredArgsConstructor
public class SavingsAccountTransactionDataValidator {

    private final FromJsonHelper fromApiJsonHelper;
    private static final Set<String> SAVINGS_ACCOUNT_HOLD_AMOUNT_REQUEST_DATA_PARAMETERS = new HashSet<>(
            Arrays.asList(transactionDateParamName, SavingsApiConstants.dateFormatParamName, SavingsApiConstants.localeParamName,
                    transactionAmountParamName, lienAllowedParamName, SavingsApiConstants.reasonForBlockParamName));
    private final ConfigurationDomainService configurationDomainService;

    public void validateTransactionWithPivotDate(final LocalDate transactionDate, final SavingsAccount savingsAccount) {
        final boolean backdatedTxnsAllowedTill = this.configurationDomainService.retrievePivotDateConfig();
        final boolean isRelaxingDaysConfigOn = this.configurationDomainService.isRelaxingDaysConfigForPivotDateEnabled();

        final LocalDate lastInterestPostingDate = savingsAccount.getSummary().getInterestPostedTillDate();

        if (backdatedTxnsAllowedTill && lastInterestPostingDate != null) {
            LocalDate pivotDate = lastInterestPostingDate;
            if (isRelaxingDaysConfigOn) {
                pivotDate = pivotDate.minusDays(this.configurationDomainService.retrieveRelaxingDaysConfigForPivotDate());
            }
            if (DateUtils.isAfter(pivotDate, transactionDate)) {
                throw new TransactionBeforePivotDateNotAllowed(transactionDate, pivotDate);
            }
        }
    }

    public void validate(final JsonCommand command) {
        final String json = command.json();

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

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

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

        final JsonElement element = command.parsedJson();

        final LocalDate transactionDate = this.fromApiJsonHelper.extractLocalDateNamed(transactionDateParamName, element);
        baseDataValidator.reset().parameter(transactionDateParamName).value(transactionDate).notNull();

        final BigDecimal transactionAmount = this.fromApiJsonHelper.extractBigDecimalWithLocaleNamed(transactionAmountParamName, element);
        baseDataValidator.reset().parameter(transactionAmountParamName).value(transactionAmount).notNull().positiveAmount();

        final Integer paymentType = this.fromApiJsonHelper.extractIntegerWithLocaleNamed(paymentTypeIdParamName, element);
        baseDataValidator.reset().parameter(paymentTypeIdParamName).value(paymentType).notNull();

        validatePaymentTypeDetails(baseDataValidator, element);

        throwExceptionIfValidationWarningsExist(dataValidationErrors);
    }

    public void validateActivation(final JsonCommand command) {
        final String json = command.json();

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

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

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

        final JsonElement element = command.parsedJson();

        final LocalDate activationDate = this.fromApiJsonHelper.extractLocalDateNamed(activatedOnDateParamName, element);
        baseDataValidator.reset().parameter(activatedOnDateParamName).value(activationDate).notNull();

        throwExceptionIfValidationWarningsExist(dataValidationErrors);
    }

    public void validateClosing(final JsonCommand command, final SavingsAccount account) {
        final String json = command.json();

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

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

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

        final JsonElement element = command.parsedJson();

        final LocalDate closedonDate = this.fromApiJsonHelper.extractLocalDateNamed(closedOnDateParamName, element);
        baseDataValidator.reset().parameter(closedOnDateParamName).value(closedonDate).notNull();

        if (this.fromApiJsonHelper.parameterExists(withdrawBalanceParamName, element)) {
            final Boolean withdrawBalance = this.fromApiJsonHelper.extractBooleanNamed(withdrawBalanceParamName, element);
            baseDataValidator.reset().parameter(withdrawBalanceParamName).value(withdrawBalance).isOneOfTheseValues(true, false);
        }

        if (account.getSavingsHoldAmount().compareTo(BigDecimal.ZERO) > 0) {
            baseDataValidator.reset().failWithCodeNoParameterAddedToErrorCode("amount.is.on.hold.release.the.amount.to.continue",
                    account.getId());
        }

        if (account.getSubStatus().equals(SavingsAccountSubStatusEnum.BLOCK.getValue())
                || account.getSubStatus().equals(SavingsAccountSubStatusEnum.BLOCK_CREDIT.getValue())
                || account.getSubStatus().equals(SavingsAccountSubStatusEnum.BLOCK_DEBIT.getValue())) {
            baseDataValidator.reset().parameter(SavingsApiConstants.subStatusParamName)
                    .failWithCodeNoParameterAddedToErrorCode("account.is.in.blocked.state");
        }

        validatePaymentTypeDetails(baseDataValidator, element);

        throwExceptionIfValidationWarningsExist(dataValidationErrors);
    }

    private void validatePaymentTypeDetails(final DataValidatorBuilder baseDataValidator, JsonElement element) {
        // Validate all string payment detail fields for max length
        boolean checkPaymentTypeDetails = false;
        final Integer paymentTypeId = this.fromApiJsonHelper.extractIntegerWithLocaleNamed(paymentTypeIdParamName, element);
        baseDataValidator.reset().parameter(paymentTypeIdParamName).value(paymentTypeId).ignoreIfNull().integerGreaterThanZero();
        final Set<String> paymentDetailParameters = new HashSet<>(Arrays.asList(transactionAccountNumberParamName, checkNumberParamName,
                routingCodeParamName, receiptNumberParamName, bankNumberParamName));
        for (final String paymentDetailParameterName : paymentDetailParameters) {
            final String paymentDetailParameterValue = this.fromApiJsonHelper.extractStringNamed(paymentDetailParameterName, element);
            baseDataValidator.reset().parameter(paymentDetailParameterName).value(paymentDetailParameterValue).ignoreIfNull()
                    .notExceedingLengthOf(50);
            if (paymentDetailParameterValue != null && !paymentDetailParameterValue.equals("")) {
                checkPaymentTypeDetails = true;
            }
        }
        if (checkPaymentTypeDetails) {
            baseDataValidator.reset().parameter(paymentTypeIdParamName).value(paymentTypeId).notBlank().integerGreaterThanZero();
        }

    }

    public void validateHoldAndAssembleForm(final String json, final SavingsAccount account, final AppUser createdUser,
            final boolean backdatedTxnsAllowedTill) {

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

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

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

        final JsonElement element = this.fromApiJsonHelper.parse(json);

        final BigDecimal amount = this.fromApiJsonHelper.extractBigDecimalWithLocaleNamed(transactionAmountParamName, element);
        baseDataValidator.reset().parameter(transactionAmountParamName).value(amount).notNull().positiveAmount();
        final LocalDate transactionDate = this.fromApiJsonHelper.extractLocalDateNamed(transactionDateParamName, element);

        final String reasonForBlock = this.fromApiJsonHelper.extractStringNamed(SavingsApiConstants.reasonForBlockParamName, element);
        baseDataValidator.reset().parameter(SavingsApiConstants.reasonForBlockParamName).value(reasonForBlock).notBlank()
                .notExceedingLengthOf(100);

        baseDataValidator.reset().parameter(transactionDateParamName).value(transactionDate).notNull();
        boolean isActive = account.isActive();

        if (!isActive) {
            baseDataValidator.reset().parameter(SavingsApiConstants.statusParamName)
                    .failWithCodeNoParameterAddedToErrorCode(SavingsApiConstants.ERROR_MSG_SAVINGS_ACCOUNT_NOT_ACTIVE);
        }

        Boolean isEnforceMinRequiredBalanceEnabled = account.getEnforceMinRequiredBalance();
        Boolean isAccountLienEnabled = account.isLienAllowed();
        Boolean isOverdraftEnabled = account.isAllowOverdraft();

        Boolean lienAllowed = false;
        if (BooleanUtils.isTrue(fromApiJsonHelper.extractBooleanNamed(lienAllowedParamName, element))) {
            lienAllowed = this.fromApiJsonHelper.extractBooleanNamed(lienAllowedParamName, element);
            if (isAccountLienEnabled) {
                if (isOverdraftEnabled) {
                    if (account.getOverdraftLimit().compareTo(account.getMaxAllowedLienLimit()) > 0) {
                        baseDataValidator.reset().failWithCodeNoParameterAddedToErrorCode(
                                "Overdraft.limit.can.not.be.greater.than.lien.limit", account.getId());
                    }
                }
                if (amount.compareTo(account.getMaxAllowedLienLimit()) > 0) {
                    baseDataValidator.reset().failWithCodeNoParameterAddedToErrorCode("lien.limit.exceeded", account.getId());
                }
            } else {
                baseDataValidator.reset().failWithCodeNoParameterAddedToErrorCode("lien.is.not.allowed.in.product.level", account.getId());
            }
        } else {
            if (isOverdraftEnabled) {
                if (amount.compareTo(account.getWithdrawableBalance()) > 0 && amount.compareTo(account.getOverdraftLimit()) > 0) {
                    baseDataValidator.reset().failWithCodeNoParameterAddedToErrorCode("insufficient.balance", account.getId());
                }
            }
            if (isEnforceMinRequiredBalanceEnabled) {
                if (amount.compareTo(account.getWithdrawableBalance()) > 0) {
                    baseDataValidator.reset().failWithCodeNoParameterAddedToErrorCode("insufficient.balance", account.getId());
                }
            }
            if (!isOverdraftEnabled && !isEnforceMinRequiredBalanceEnabled) {
                if (amount.compareTo(account.getWithdrawableBalance()) > 0) {
                    baseDataValidator.reset().failWithCodeNoParameterAddedToErrorCode("insufficient.balance", account.getId());
                }
            }
        }
        LocalDate lastTransactionDate = null;

        if (!backdatedTxnsAllowedTill) {
            lastTransactionDate = account.retrieveLastTransactionDate();
        } else {
            lastTransactionDate = account.retrieveLastTransactionDateWithPivotConfig();
        }

        // compare two dates now
        if (DateUtils.isBefore(transactionDate, lastTransactionDate)) {
            baseDataValidator.parameter(SavingsApiConstants.dateParamName).value(lastTransactionDate).failWithCode(
                    "validation.msg.date.can.not.be.before.last.transaction.date", "Amount can be put on hold only after last transaction");
        }

        throwExceptionIfValidationWarningsExist(dataValidationErrors);
    }

    public SavingsAccountTransaction validateReleaseAmountAndAssembleForm(final SavingsAccountTransaction holdTransaction) {
        final List<ApiParameterError> dataValidationErrors = new ArrayList<>();
        final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors)
                .resource(SAVINGS_ACCOUNT_RESOURCE_NAME);

        if (holdTransaction == null) {
            baseDataValidator.failWithCode("validation.msg.validation.errors.exist", "Transaction not found");
        } else if (holdTransaction.getReleaseIdOfHoldAmountTransaction() != null) {
            baseDataValidator.parameter(SavingsApiConstants.amountParamName).value(holdTransaction.getAmount())
                    .failWithCode("validation.msg.amount.is.not.on.hold", "Transaction amount is not on hold");
        }

        if (holdTransaction != null) {
            boolean isActive = holdTransaction.getSavingsAccount().isActive();
            if (!isActive) {
                baseDataValidator.reset().parameter(SavingsApiConstants.statusParamName)
                        .failWithCodeNoParameterAddedToErrorCode(SavingsApiConstants.ERROR_MSG_SAVINGS_ACCOUNT_NOT_ACTIVE);
            }
        }

        throwExceptionIfValidationWarningsExist(dataValidationErrors);
        LocalDate transactionDate = DateUtils.getBusinessLocalDate();
        SavingsAccountTransaction transaction = SavingsAccountTransaction.releaseAmount(holdTransaction, transactionDate);
        return transaction;
    }

    private void throwExceptionIfValidationWarningsExist(final List<ApiParameterError> dataValidationErrors) {
        if (!dataValidationErrors.isEmpty()) {
            //
            throw new PlatformApiDataValidationException("validation.msg.validation.errors.exist", "Validation errors exist.",
                    dataValidationErrors);
        }
    }
}