package de.superx.kettle.statistics;

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

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 org.springframework.jdbc.support.rowset.SqlRowSetMetaData;

import de.superx.BaseDbTest;
import de.superx.KettleTestRunner;
import de.superx.stat.StatisticsBase;

public class ExaminationEctsAndRszTest extends BaseDbTest {

    private static final String jobFile = String.join(File.separator, "superx","WEB-INF","conf","edustore","db","module","astat","etl","statistik2016","estatistik.kjb");
    private static final String statSelect = "select * from " + StatisticsBase.MODULE_PREFIX + "astat";

    private static Map<String, String> parameters = createParameterMap();
    private SqlRowSet originalContentStgLab;
    private Integer rsz, tid1, tid2, bioTid, matheTid;

    @Test
    public void testEctsRsz() throws IOException {
        loadFixture();
        KettleTestRunner.runKettleJob(jobFile, parameters, LogLevel.ERROR);
        Map<String,Object> expectedResult = new HashMap<>();
        expectedResult.put("ef132", "250");
        expectedResult.put("ef149", "07");
        expectedResult.put("ef150", "026");
        expectedResult.put("ef151", "105");
        expectedResult.put("ef153", null);
        expectedResult.put("ef155", "07");
        expectedResult.put("ef156", "2020");
        expectedResult.put("ef187", null);
        expectedResult.put("ef188", null);
        expectedResult.put("ef189", null);
        expectedResult.put("ef190", null);
        validateSingleRow(statSelect, expectedResult);
        unloadFixture();
    }

    private void loadFixture() throws IOException {
        JdbcTemplate jt = new JdbcTemplate(dataSource);
        originalContentStgLab = jt.queryForRowSet("select * from sos_lab_stg where matrikel_nr=11202664 and abschnitt=2 and stichtag=4");
        jt.execute("delete from sos_lab_stg where matrikel_nr=11202664 and abschnitt=2 and stichtag=4");
        loadCsvFileIntoTable(String.join(File.separator, "test","resources","db","fixtures","ects_and_rsz_aggregation","11202664_sos_lab_stg.txt"), "sos_lab_stg");
        updateStgTid();
    }
    
    private void unloadFixture() {
        JdbcTemplate jt = new JdbcTemplate(dataSource);
        SqlRowSetMetaData meta = originalContentStgLab.getMetaData();
        String[] columns = meta.getColumnNames();
        String columnList = String.join(",", columns);
        while (originalContentStgLab.next()) {
            List<Object> row = new ArrayList<>();
            for (String column : columns) {
                row.add(originalContentStgLab.getObject(column));
            }
            StringBuffer places = new StringBuffer("(");
            for (int i = 0; i < columns.length; i++) {
                if (i < columns.length - 1) {
                    places.append("?,");
                } else {
                    places.append("?");
                }
            }
            places.append(")");
            String insert = "insert into sos_lab_stg ( " + columnList + " ) values " + places;
            jt.update(insert, row.toArray());
        }
        undoUpdateStgTid();
    }

    private void updateStgTid() {
        JdbcTemplate jt = new JdbcTemplate(dataSource);
        bioTid = jt.queryForObject("select tid from dim_studiengang where stg='026' and pversion=6 and  abschluss='35' and kz_fach='H'"
                , Integer.class);
        matheTid = jt.queryForObject("select tid from dim_studiengang where stg='105' and pversion=6 and abschluss='35' and kz_fach='H'"
                , Integer.class);
        tid1 = jt.queryForObject("select tid_stg from sos_lab_stg where matrikel_nr=11202664 and stichtag=4 and abschnitt=2 and ch30_fach='026' and kz_fach='H'", Integer.class);
        tid1 = jt.queryForObject("select tid_stg from sos_lab_stg where matrikel_nr=11202664 and stichtag=4 and abschnitt=2 and ch30_fach='105' and kz_fach='H'", Integer.class);
        jt.update("update sos_lab_stg set tid_stg=? where matrikel_nr=11202664 and stichtag=4 and abschnitt=2 and ch30_fach=? and kz_fach=?",
                bioTid, "026", "H");
        jt.update("update sos_lab_stg set tid_stg=? where matrikel_nr=11202664 and stichtag=4 and abschnitt=2 and ch30_fach=? and kz_fach=?",
                matheTid, "105", "H");
        rsz = jt.queryForObject("select regel from dim_studiengang where tid=?", Integer.class, matheTid);
        jt.update("update dim_studiengang set regel=7 where tid=?", matheTid);
    }

    private void undoUpdateStgTid() {
        JdbcTemplate jt = new JdbcTemplate(dataSource);
        jt.update("update sos_lab_stg set tid_stg=? where matrikel_nr=11202664 and stichtag=4 and abschnitt=2 and ch30_fach='026' and kz_fach='H'", tid1);
        jt.update("update sos_lab_stg set tid_stg=? where matrikel_nr=11202664 and stichtag=4 and abschnitt=2 and ch30_fach='105' and kz_fach='H'", tid2);
        jt.update("update dim_studiengang set regel=? where tid=?", rsz, matheTid);
    }
    
    private static Map<String,String> createParameterMap() {
        Map<String,String> parameterMap = new HashMap<String,String>();
        parameterMap.put("lieferung", "2");
        parameterMap.put("berichtssemester", "20211");
        parameterMap.put("stichtagsart_pruef_vorsem", "4");
        parameterMap.put("stichtagsart_pruef_berichtssem", "4");
        parameterMap.put("stichtagsart_stud_vorsem", "1");
        parameterMap.put("stichtagsart_stud_berichtssem", "1");
        parameterMap.put("matrikelnr", "11202664");
        return parameterMap;
    }

}