/**
 * 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.integrationtests;

import static org.junit.Assert.assertEquals;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map.Entry;

import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.mifosplatform.integrationtests.common.ClientHelper;
import org.mifosplatform.integrationtests.common.CommonConstants;
import org.mifosplatform.integrationtests.common.GlobalConfigurationHelper;
import org.mifosplatform.integrationtests.common.Utils;
import org.mifosplatform.integrationtests.common.savings.SavingsAccountHelper;
import org.mifosplatform.integrationtests.common.savings.SavingsProductHelper;
import org.mifosplatform.integrationtests.common.savings.SavingsStatusChecker;

import com.jayway.restassured.builder.RequestSpecBuilder;
import com.jayway.restassured.builder.ResponseSpecBuilder;
import com.jayway.restassured.http.ContentType;
import com.jayway.restassured.specification.RequestSpecification;
import com.jayway.restassured.specification.ResponseSpecification;

@SuppressWarnings({ "rawtypes", "unused", "unchecked" })
public class FlexibleSavingsInterestPostingIntegrationTest {

    public static final String ACCOUNT_TYPE_INDIVIDUAL = "INDIVIDUAL";

    private ResponseSpecification responseSpec;
    private RequestSpecification requestSpec;
    private SavingsProductHelper savingsProductHelper;
    private SavingsAccountHelper savingsAccountHelper;

    @Before
    public void setup() {
        Utils.initializeRESTAssured();
        this.requestSpec = new RequestSpecBuilder().setContentType(ContentType.JSON).build();
        this.requestSpec.header("Authorization", "Basic " + Utils.loginIntoServerAndGetBase64EncodedAuthenticationKey());
        this.responseSpec = new ResponseSpecBuilder().expectStatusCode(200).build();
        this.savingsAccountHelper = new SavingsAccountHelper(this.requestSpec, this.responseSpec);
        this.savingsProductHelper = new SavingsProductHelper();
    }

    @Test
    public void testSavingsInterestPostingAtPeriodEnd() {
        // client activation, savings activation and 1st transaction date
        final String startDate = "01 December 2013";
        final Integer clientID = ClientHelper.createClient(this.requestSpec, this.responseSpec, startDate);
        Assert.assertNotNull(clientID);

        // Configuring global config flags
        configureInterestPosting(true, 4);

        final Integer savingsId = createSavingsAccount(clientID, startDate);

        Integer depositTransactionId = (Integer) this.savingsAccountHelper.depositToSavingsAccount(savingsId, "1000", startDate,
                CommonConstants.RESPONSE_RESOURCE_ID);

        /***
         * Perform Post interest transaction and verify the posted transaction
         * date
         */
        this.savingsAccountHelper.postInterestForSavings(savingsId);
        HashMap accountDetails = this.savingsAccountHelper.getSavingsDetails(savingsId);
        ArrayList<HashMap<String, Object>> transactions = (ArrayList<HashMap<String, Object>>) accountDetails.get("transactions");
        HashMap<String, Object> interestPostingTransaction = transactions.get(transactions.size() - 2);
        for (Entry<String, Object> entry : interestPostingTransaction.entrySet())
            System.out.println(entry.getKey() + "-" + entry.getValue().toString());
        // 1st Dec 13 to 31st March 14 - 365 days, daily compounding using daily
        // balance
        // 33.7016 obtained from formula in excel provided by Subramanya
        assertEquals("Equality check for interest posted amount", "33.7016", interestPostingTransaction.get("amount").toString());
        assertEquals("Date check for Interest Posting transaction", "[2014, 3, 31]", interestPostingTransaction.get("date").toString());

    }

    private Integer createSavingsAccount(final Integer clientID, final String startDate) {
        final Integer savingsProductID = createSavingsProduct();
        Assert.assertNotNull(savingsProductID);
        final Integer savingsId = this.savingsAccountHelper.applyForSavingsApplicationOnDate(clientID, savingsProductID,
                ACCOUNT_TYPE_INDIVIDUAL, startDate);
        Assert.assertNotNull(savingsId);
        HashMap savingsStatusHashMap = this.savingsAccountHelper.approveSavingsOnDate(savingsId, startDate);
        SavingsStatusChecker.verifySavingsIsApproved(savingsStatusHashMap);
        savingsStatusHashMap = this.savingsAccountHelper.activateSavingsAccount(savingsId, startDate);
        SavingsStatusChecker.verifySavingsIsActive(savingsStatusHashMap);
        return savingsId;
    }

    private void configureInterestPosting(final Boolean periodEndEnable, final Integer financialYearBeginningMonth) {
        final ArrayList<HashMap> globalConfig = GlobalConfigurationHelper.getAllGlobalConfigurations(this.requestSpec, this.responseSpec);
        Assert.assertNotNull(globalConfig);

        // Updating flag for interest posting at period end
        Integer periodEndConfigId = (Integer) globalConfig.get(10).get("id");
        Assert.assertNotNull(periodEndConfigId);

        HashMap periodEndConfigData = GlobalConfigurationHelper.getGlobalConfigurationById(this.requestSpec, this.responseSpec,
                periodEndConfigId.toString());
        Assert.assertNotNull(periodEndConfigData);

        Boolean enabled = (Boolean) globalConfig.get(10).get("enabled");

        if (enabled != periodEndEnable)
            periodEndConfigId = GlobalConfigurationHelper.updateEnabledFlagForGlobalConfiguration(this.requestSpec, this.responseSpec,
                    periodEndConfigId.toString(), periodEndEnable);

        // Updating value for financial year beginning month
        Integer financialYearBeginningConfigId = (Integer) globalConfig.get(11).get("id");
        Assert.assertNotNull(financialYearBeginningConfigId);

        HashMap financialYearBeginningConfigData = GlobalConfigurationHelper.getGlobalConfigurationById(this.requestSpec,
                this.responseSpec, financialYearBeginningConfigId.toString());
        Assert.assertNotNull(financialYearBeginningConfigData);

        financialYearBeginningConfigId = GlobalConfigurationHelper.updateValueForGlobalConfiguration(this.requestSpec, this.responseSpec,
                financialYearBeginningConfigId.toString(), financialYearBeginningMonth.toString());
        Assert.assertNotNull(financialYearBeginningConfigId);
    }

    private Integer createSavingsProduct() {
        final String savingsProductJSON = this.savingsProductHelper.withInterestCompoundingPeriodTypeAsDaily()
                .withInterestPostingPeriodTypeAsAnnual().withInterestCalculationPeriodTypeAsDailyBalance().build();
        return SavingsProductHelper.createSavingsProduct(savingsProductJSON, requestSpec, responseSpec);
    }

    // Reset configuration fields
    @After
    public void tearDown() {
        configureInterestPosting(false, 1);
    }

}