package de.superx.kettle;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.codehaus.groovy.control.CompilationFailedException;
import org.junit.Assert;
import org.junit.Test;
import org.pentaho.di.core.logging.LogLevel;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.support.rowset.SqlRowSet;

import de.superx.BaseDbTest;
import de.superx.KettleTestRunner;

public class DoctoralCandidateOfficialStatisticsTest extends BaseDbTest {

    private static final String KETTLE_JOB = String.join(File.separator, "superx","WEB-INF","conf","edustore","db","module", "prom", "etl", "stat_prom2017", "astat_prom.kjb");

    private static final String UNLOADS_PATH = String.join(File.separator, "test", "resources", "schema_files",
            "doctoral_candidate_statistics", "unloads");

    private static final String STUDY_STATUS_FIELD_NAME = "study_status_hiskey";

    private static final String STUDY_STATUS_VACATION = "'4'";

    private static final String STUDY_STATUS_NULL = "null";

    private static Map<String, String> parameters = createParameterMap();

    @Test
    public void testPromStatistics()
                    throws CompilationFailedException, IOException {

        loadFixture();
        // test ef023, ticket 182117
        // Job job = runKettleJob(metastore);
        KettleTestRunner.runKettleJob(KETTLE_JOB, parameters, LogLevel.BASIC);
//        startDebugWebserver();
        SqlRowSet resultSet = getPromAstat();
        validateEf007PersonAnne(resultSet);
        validateEf023ExamPassed(resultSet);

        // test ef015, ticket 207087
        updateAnnesRecordSet(STUDY_STATUS_FIELD_NAME, STUDY_STATUS_VACATION);
        KettleTestRunner.runKettleJob(KETTLE_JOB, parameters, LogLevel.BASIC);
        resultSet = getPromAstat();
        validateEf007PersonAnne(resultSet);
        validateEf015Registered(resultSet);
        validateEf030NoGrade(resultSet);

        // test ef015, ticket 207515
        updateAnnesRecordSet(STUDY_STATUS_FIELD_NAME, STUDY_STATUS_NULL);
        KettleTestRunner.runKettleJob(KETTLE_JOB, parameters, LogLevel.BASIC);
        resultSet = getPromAstat();
        validateEf007PersonAnne(resultSet);
        validateEf015NotRegistered(resultSet);

        // test ef034 - ef038 #210725
        // https://hiszilla.his.de/hiszilla/show_bug.cgi?id=210725
        updateAnnesRecordSet("doc_ef34", "'12345678910111214151617181920'");
        updateAnnesRecordSet("doc_ef35", "'6543210123456'");
        updateAnnesRecordSet("doc_ef36", "'ABCDEF_123456_XYZ'");
        updateAnnesRecordSet("doc_ef37", "'FEDCBA'");
        updateAnnesRecordSet("doc_ef38", "'A1B2C3'");
        KettleTestRunner.runKettleJob(KETTLE_JOB, parameters, LogLevel.BASIC);
        resultSet = getPromAstat();
        validateEf034ToEf038(resultSet);

        // test ef030 #202234
        // https://hiszilla.his.de/hiszilla/show_bug.cgi?id=202234
        // TODO Es gibt keine Abschlussprüfung zu Anne (his_person_id=2225) 
        // in prom_abschlusspruefungen, das ist aber Voraussetzung,
        // damit der folgende Test funktioniert.
        // Prüfen, ob mit wenig Aufwand hier eine Fixture eingefügt werden kann.
//        JdbcTemplate jt = new JdbcTemplate(dataSource);
//        jt.execute("UPDATE prom_abschlusspruefungen SET ext_abp_k_work_of_status = 1;");
//        jt.execute("UPDATE prom_abschlusspruefungen SET ext_grade = null;");
//        KettleTestRunner.runKettleJob(KETTLE_JOB, parameters, LogLevel.BASIC);
//        resultSet = getPromAstat();
//        validateEf030NoGrade(resultSet);

    }

    private static Map<String, String> createParameterMap() {
        Map<String, String> parameterMap = new HashMap<>();
        parameterMap.put("name", "'Anne'");
        parameterMap.put("berichtsjahr", "2018");
        return parameterMap;
    }

    private static void validateEf015Registered(SqlRowSet resultSet) {
        String ef015_immatrikuliert = resultSet.getString("ef015");
        Assert.assertEquals("'ef015' (immatrikuliert) differs from expected value", "1", ef015_immatrikuliert);
    }

    private static void validateEf015NotRegistered(SqlRowSet resultSet) {
        String ef015_immatrikuliert = resultSet.getString("ef015");
        Assert.assertEquals("'ef015' (immatrikuliert) differs from expected value", "0", ef015_immatrikuliert);
    }

    private static void validateEf023ExamPassed(SqlRowSet resultSet) {
        String ef023_pruefungBestanden = resultSet.getString("ef023");
        Assert.assertEquals("'ef023' (pruefungBestanden) differs from expected value", "0", ef023_pruefungBestanden);
    }

    private static void validateEf007PersonAnne(SqlRowSet resultSet) {
        int index = resultSet.findColumn("ef007");
        String ef007_name = resultSet.getString(index);
//        String ef007_name = resultSet.getString("ef007");
        Assert.assertEquals("'ef007' (name) differs from expected value", "Anne", ef007_name);
    }

    private static void validateEf034ToEf038(SqlRowSet resultSet) {
        String ef034 = resultSet.getString("ef034");
        String ef035 = resultSet.getString("ef035");
        String ef036 = resultSet.getString("ef036");
        String ef037 = resultSet.getString("ef037");
        String ef038 = resultSet.getString("ef038");
        Assert.assertEquals("ef034 has been cut as expected", "123", ef034);
        Assert.assertEquals("ef035 has been cut as expected", "654", ef035);
        Assert.assertEquals("ef036 has been cut as expected", "ABC", ef036);
        Assert.assertEquals("ef037 has been cut as expected", "FED", ef037);
        Assert.assertEquals("ef038 has been cut as expected", "A1B", ef038);
    }

    private static void validateEf030NoGrade(SqlRowSet resultSet) {
        String ef030_gesamtnote = resultSet.getString("ef030");
        Assert.assertNull(ef030_gesamtnote);
}

    private SqlRowSet getPromAstat() {
        JdbcTemplate jt = new JdbcTemplate(dataSource);
        SqlRowSet result = jt.queryForRowSet("SELECT * FROM prom_astat;");
        if(!result.next()) {
            throw new RuntimeException("EMPTY RESULT!");
        }
        return result;
    }

    private void updateAnnesRecordSet(String field, String value) {
        JdbcTemplate jt = new JdbcTemplate(dataSource);
        jt.execute("UPDATE prom_promovierende SET " + field + "=" + value + ";");
    }
    
    private void loadFixture() throws IOException {
        loadCsvFileIntoTable(String.join(File.separator, UNLOADS_PATH, "prom_abschlusspruefungen"), "prom_abschlusspruefungen", '*');
        loadCsvFileIntoTable(String.join(File.separator, UNLOADS_PATH, "prom_astat"), "prom_astat");
        loadCsvFileIntoTable(String.join(File.separator, UNLOADS_PATH, "prom_promotion_data"), "prom_promotion_data", '*');
        loadCsvFileIntoTable(String.join(File.separator, UNLOADS_PATH, "prom_promovierende"), "prom_promovierende", '*');
        loadCsvFileIntoTable(String.join(File.separator, UNLOADS_PATH, "prom_promovierende_temporal_status"), "prom_promovierende_temporal_status", '*');
    }
    
}