package com.megatim.fdxconsultation.dao.impl.dataproduction.metadata;

import com.megatim.fdxcommons.model.dataproduction.DataProductionType;
import com.megatim.fdxcommons.model.dataproduction.metadata.ProductionMetaData;
import com.megatim.fdxcommons.tools.database.contrat.QueryMetaData;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import javax.naming.NamingException;

/**
 *
 * @author Gabuntu
 */
public class CreateProductionMetaDataQuery implements QueryMetaData<Void> {

    private final ProductionMetaData pmd;
    private final DataProductionType dataProductionType;
    private final Connection connection;
    private final int BATCH_SIZE = 100_000;

    public CreateProductionMetaDataQuery(ProductionMetaData pmd, DataProductionType dataProductionType, Connection connection) {
        this.pmd = pmd;
        this.dataProductionType = dataProductionType;
        this.connection = connection;
    }

    @Override
    public Void execute() throws NamingException, SQLException {

        if (dataProductionType.equals(DataProductionType.ADD)) {
            executeAddDataType();

        } else if (dataProductionType.equals(DataProductionType.UPDATE)) {
            executeUpdateDataType();
        }
        return null;
    }

    private void executeAddDataType() throws SQLException {
        System.out.println("--------------------- pmd.getNbreElts() = " + pmd.getNbreElts());
        try ( PreparedStatement statement = connection.prepareStatement(productionMetaDataQueryString())) {

            statement.setLong(1, pmd.getProductionId());
            statement.setLong(2, pmd.getStartIndex());
            statement.setLong(3, pmd.getNbreElts());
            statement.setString(4, pmd.getDataProductionType());

            statement.executeUpdate();

        }
    }

    private void executeUpdateDataType() throws SQLException {
        try ( PreparedStatement metaDataStatement = connection.prepareStatement(productionMetaDataQueryString());  PreparedStatement indexesStatement = connection.prepareStatement(productionMetaDataIndexesQuery())) {
            metaDataStatement.executeUpdate();
            executeInBatch(indexesStatement);
            indexesStatement.executeBatch();
        }
    }

    private String productionMetaDataQueryString() {
        return "INSERT INTO ProductionMetaData(productionId, startIndex, nbreElts, dataProductionType)"
                + " VALUES(?, ?, ?, ?)";
    }

    private String productionMetaDataIndexesQuery() {
        return "INSERT INTO productionMetaData_indexes(productionId, indexes) VALUES(?, ?)";
    }

    private void executeInBatch(PreparedStatement preparedStatement) throws SQLException {
        int count = 0;

        for (Long l : pmd.getIndexes()) {
            preparedStatement.setLong(1, pmd.getProductionId());
            preparedStatement.setLong(2, l);
            preparedStatement.addBatch();

            if (++count % BATCH_SIZE == 0) {
                preparedStatement.executeBatch();
            }
        }
    }

}