package de.superx;

import static org.junit.Assert.assertEquals;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Optional;

import javax.sql.DataSource;

import org.apache.commons.csv.CSVFormat;
import org.apache.commons.csv.CSVRecord;
import org.apache.log4j.Logger;
import org.h2.tools.Server;
import org.junit.After;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.runner.RunWith;
import org.pentaho.di.core.database.DataSourceNamingException;
import org.pentaho.di.core.database.DataSourceProviderFactory;
import org.pentaho.di.core.database.DataSourceProviderInterface;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.io.FileSystemResource;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.simple.SimpleJdbcInsert;
import org.springframework.jdbc.datasource.init.ScriptException;
import org.springframework.jdbc.datasource.init.ScriptUtils;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;

import de.superx.bianalysis.models.Right;
import de.superx.bianalysis.models.RightParam;
import de.superx.bianalysis.service.UserRestrictionService;
import de.superx.common.SxUser;
import de.superx.jdbc.entity.Konstante;
import de.superx.jdbc.repository.KonstanteRepository;
import de.superx.spring.TestUserServiceImpl;
import de.superx.spring.service.UserService;

@Ignore
@RunWith(SpringRunner.class)
@ContextConfiguration(classes = { TestApplicationConfigPg.class })
public class BaseDbTest  {

//    protected static void createTestDb() throws SQLException {
//        // TODO This kind of works but still problems with SxPool init
//        try (Connection con = DriverManager.getConnection(H2_MEM_URL)) {
//            DataSource ds = new SingleConnectionDataSource(con, true);
//            JdbcTemplate jt = new JdbcTemplate(ds);
//            jt.execute("RUNSCRIPT FROM '" + dbPath + File.separator + "head_eduetl.sql'");
//        }
//    }
    
    private static Logger logger = Logger.getLogger(BaseDbTest.class);
    
    public static final String LOGGING_PROPERTIES_PATH = String.join(File.separator, "test", "conf",
                    "logging_unittests.properties");
    public static final String logConfigPath = new File(LOGGING_PROPERTIES_PATH).getAbsolutePath();
    public static final String MANDANTEN_ID = "test";
    
    
    @Autowired
    public DataSource dataSource;
    
    @Autowired
    public KonstanteRepository konstanteRepository;
    
    @Autowired
    private
    UserService userService;
    
    protected SxUser user;

    @After
    public void after() {
        user.getRightsMap().clear();
        new JdbcTemplate(dataSource).execute("TRUNCATE table public.user_dimension_grants");
    }
    
    @Before
    public void baseInit() throws SQLException {
        // Kettle DataSourceProvider
        try (Connection con = dataSource.getConnection()) {
            logger.info("Set Kettle DataSourceProvider to " + con.getMetaData().getURL());
        }
			    DataSourceProviderFactory
					.setDataSourceProviderInterface(new DataSourceProviderInterface() {

                        @Override
                        public DataSource getNamedDataSource(String datasourceName) throws DataSourceNamingException {
                            return dataSource;
                        }

                        @Override
                        public DataSource getNamedDataSource(String datasourceName, DatasourceType type) throws DataSourceNamingException {
                            return getNamedDataSource(datasourceName);
                        }
					    
					});
		// Testuser intialisieren
        TestUserServiceImpl tusi = (TestUserServiceImpl) userService;
        user = tusi.createTestUser(true, null);
        Map<String, Map<String,String>> rights = new HashMap<>();
        rights.put("RIGHT_CS_BIA_STANDARDREPORTS_ADMIN", null);
        user.setRights(rights, null);
        new UserRestrictionService(user, dataSource);
    }
    
	protected void executeSqlScript(String filePath) throws ScriptException, SQLException {
	    ScriptUtils.executeSqlScript(dataSource.getConnection(), new FileSystemResource(new File(filePath)));
	}

	protected void loadCsvFileIntoTable(String filePath, String tableName) throws IOException {
	    loadCsvFileIntoTable(filePath, tableName, ';');
	}

    protected void loadCsvFileIntoTable(String filePath, String tableName, char delimiter) throws IOException {
		Iterable<CSVRecord> records = null;
			Reader in = new FileReader(filePath);
			records = CSVFormat.RFC4180
							.withDelimiter(delimiter)
							.withFirstRecordAsHeader()
							.withNullString("")
							.withTrim()
							.withEscape('\\')
							.parse(in);
		SimpleJdbcInsert insertActor = new SimpleJdbcInsert(dataSource).withTableName(tableName);
		for (CSVRecord record : records) {
			insertActor.execute(record.toMap());
		}
	}

    protected void validateResultRowCount(String sqlSelect, int expectedRowCount) {
        JdbcTemplate jt = new JdbcTemplate(dataSource);
        List<Map<String, Object>> resultRows = jt.queryForList(sqlSelect);
        assertEquals("Result has to be exactly " + expectedRowCount +" rows", expectedRowCount, resultRows.size());
    }
    
    protected void validateSingleRow(String sqlSelect, Map<String,Object> expectedResult) {
        JdbcTemplate jt = new JdbcTemplate(dataSource);
        List<Map<String, Object>> resultRows = jt.queryForList(sqlSelect);
        assertEquals("Result has to be exactly 1 row", 1, resultRows.size());
        Map<String, Object> row = resultRows.get(0);
        for (Entry<String, Object> expected : expectedResult.entrySet()) {
        	Object content = row.get(expected.getKey());
        	assertEquals("Expect field " + expected.getKey() + " with value " + expected.getValue(), expected.getValue(), content);
        }
    }
    
    protected void startDebugWebserver() throws SQLException {
        try (Connection con = dataSource.getConnection().unwrap(Connection.class)) {
            Server.startWebServer(con); // uncomment for local (e.g. dev env) debugging
        }
    }
    
    public void setApnr(String beschreibung, Integer apnr) {
        Optional<Konstante> optk = konstanteRepository.findByBeschreibung(beschreibung);
        if (optk.isPresent()) {
            Konstante konstante = optk.get();
            konstante.apnr = apnr;
            konstanteRepository.save(konstante);
        } else {
            // should be present, but if not create new Konstante
            Konstante k = new Konstante();
            k.apnr = apnr;
            k.beschreibung = beschreibung;
            k = konstanteRepository.save(k);
        }
    }
    
    protected TestUserServiceImpl getTestUserService() {
        return (TestUserServiceImpl) userService;
    }
    
    
  //  public void setDbtDataBaseProperties(DbtManager manager) {
  //      String password = ((HikariDataSource)dataSource).getPassword();
  //      String jdbcUrl = ((HikariDataSource)dataSource).getJdbcUrl();
  //      String cleanUrl = jdbcUrl.substring(5); // remove "jdbc:"
  //      URI uri = URI.create(cleanUrl);
  //      String host = uri.getHost();
  //      int port = uri.getPort(); // returns -1 if no port specified
  //      String finalPort = String.valueOf(port != -1 ? Integer.valueOf(port) : "5432");

  //      String username = "";
  //      String dbName = "";
  //      try(Connection con = dataSource.getConnection()){
  //          username = con.getMetaData().getUserName(); 
  //          dbName = con.getCatalog();
  //      } catch (SQLException e) {
  //          e.printStackTrace();
  //      }
  //      
  //      //manager.setTestDataBaseProperties(username, password, host, finalPort, dbName); 
  //  }
  //  
    
    
    protected void setRightParamValue(Right right, RightParam rightParam, String paramValue) {
        setRightParamValue(right, rightParam, paramValue, true);
    }

    protected void setRightParamValue(Right right, RightParam rightParam, String paramValue, boolean truncate) {
        if(truncate) {
            new JdbcTemplate(dataSource).execute("TRUNCATE table public.user_dimension_grants");
        }
        Map<String, String> paramAndValue = user.getRightsMap().get(right.getString());
        if(paramAndValue == null) {
           paramAndValue = new HashMap<>();
        }
        paramAndValue.put(rightParam.getString(), paramValue);
        user.getRightsMap().put(right.getString(), paramAndValue);

        UserRestrictionService builder = new UserRestrictionService(user, dataSource);
        builder.applyMetadataRestrictions();
        builder.applyOrgunitRestrictions();
    }
    
    protected void setRight(Right right) {
        Map<String, Map<String, String>> rightsMap = user.getRightsMap();
        rightsMap.clear();
        rightsMap.put(right.getString(), null);
    }
    
    
    
}