D-Net

package eu.dnetlib.openaire.user.dao;

import eu.dnetlib.openaire.user.UserVerification;

import eu.dnetlib.openaire.user.store.DataSourceConnector;

import eu.dnetlib.openaire.user.store.Statement;

import org.springframework.beans.factory.annotation.Autowired;

import javax.sql.DataSource;

import java.sql.*;

import java.util.ArrayList;

import java.util.List;

import static eu.dnetlib.openaire.user.queries.UserVerificationQueries.*;

/**

 * Created by sofia on 3/10/2017.

 */

public class UserVerificationDAO {

    private final DataSource ds;

    @Autowired

    private DataSourceConnector dataSourceConnector;

    public UserVerificationDAO() {

        this.ds = dataSourceConnector.getDatasource();

    }

    // FETCH

    public List<UserVerification> fetchAll()

            throws SQLException

    {

        return (List<UserVerification>) executeQuery(FETCH_ALL);

    }

    public UserVerification fetchById(final int id)

            throws SQLException

    {

        List<UserVerification> userVerifications = executeQuery(FETCH_BY_ID, new Statement.Initializer() {

            @Override

            public void prepare(PreparedStatement stmt) throws SQLException {

                stmt.setInt(1, id);

            }

        });

        if (userVerifications.isEmpty())

            return null;

        return userVerifications.get(0);

    }

    public UserVerification fetchByUsername(final String username)

            throws SQLException

    {

        List<UserVerification> userVerifications = executeQuery(FETCH_BY_USERNAME, new Statement.Initializer() {

            @Override

            public void prepare(PreparedStatement stmt) throws SQLException {

                stmt.setString(1, username);

            }

        });

        if (userVerifications.isEmpty())

            return null;

        return userVerifications.get(0);

    }

    public UserVerification fetchByVerificationCode(final String verificationCode)

            throws SQLException

    {

        List<UserVerification> userVerifications = executeQuery(FETCH_BY_VERIFICATION_CODE, new Statement.Initializer() {

            @Override

            public void prepare(PreparedStatement stmt) throws SQLException {

                stmt.setString(1, verificationCode);

            }

        });

        if (userVerifications.isEmpty())

            return null;

        return userVerifications.get(0);

    }

    public UserVerification fetchByDate(final String date)

            throws SQLException

    {

        List<UserVerification> userVerifications = executeQuery(FETCH_BY_DATE, new Statement.Initializer() {

            @Override

            public void prepare(PreparedStatement stmt) throws SQLException {

                stmt.setDate(1, Date.valueOf(date));

            }

        });

        if (userVerifications.isEmpty())

            return null;

        return userVerifications.get(0);

    }

    public long countAll() throws SQLException

    {

        return executeCount(COUNT_ALL);

    }

    public boolean insert(final UserVerification userVerification)

            throws SQLException

    {

        return executeUpdate(INSERT, new Statement.Initializer() {

            @Override

            public void prepare(PreparedStatement stmt)

                    throws SQLException {

                stmt.setString(1, userVerification.getUsername());

            }

        }) > 0;

    }

    public boolean delete(final UserVerification userVerification)

            throws SQLException

    {

        return executeUpdate(DELETE, new Statement.Initializer() {

            @Override

            public void prepare(PreparedStatement stmt)

                    throws SQLException {

                stmt.setString(1, userVerification.getUsername());

            }

        }) > 0;

    }

    public boolean update(final UserVerification userVerification)

            throws SQLException

    {

        return executeUpdate(UPDATE, new Statement.Initializer() {

            @Override

            public void prepare(PreparedStatement stmt)

                    throws SQLException {

                stmt.setString(1, userVerification.getUsername());

            }

        }) > 0;

    }

    protected UserVerification fromResultSet(ResultSet set)

            throws SQLException

    {

        UserVerification userVerification = new UserVerification(set.getString("username"));

        userVerification.setId(set.getString("id"));

        return userVerification;

    }

    protected int executeUpdate(String sql, Statement.Initializer init)

            throws SQLException

    {

        Connection connection = ds.getConnection();

        try {

            PreparedStatement stmt = connection.prepareStatement(sql);

            init.prepare(stmt);

            return stmt.executeUpdate();

        } finally {

            connection.close();

        }

    }

    protected List<UserVerification> executeQuery(String sql, Statement.Initializer init)

            throws SQLException

    {

        Connection connection = ds.getConnection();

        try {

            PreparedStatement stmt = connection.prepareStatement(sql);

            init.prepare(stmt);

            ResultSet set = stmt.executeQuery();

            try {

                List<UserVerification> results = new ArrayList<>();

                while (set.next())

                    results.add(fromResultSet(set));

                return results;

            } finally {

                set.close();

            }

        } finally {

            connection.close();

        }

    }

    protected List<UserVerification> executeQuery(String sql)

            throws SQLException

    {

        return executeQuery(sql, Statement.emptyInitializer());

    }

    public long executeCount(String sql)

            throws SQLException

    {

        return executeCount(sql, Statement.emptyInitializer());

    }

    public long executeCount(String sql, Statement.Initializer init)

            throws SQLException

    {

        Connection connection = ds.getConnection();

        try {

            PreparedStatement stmt = connection.prepareStatement(sql);

            init.prepare(stmt);

            ResultSet set = stmt.executeQuery();

            try {

                if (set.next())

                    return set.getLong(1);

                throw new IllegalArgumentException(stmt.toString());

            } finally {

                set.close();

            }

        } finally {

            connection.close();

        }

    }

    public DataSourceConnector getDataSourceConnector() {

        return dataSourceConnector;

    }

    public void setDataSourceConnector(DataSourceConnector dataSourceConnector) {

        this.dataSourceConnector = dataSourceConnector;

    }

}