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package at.ac.tuwien.sepm.assignment.groupphase.missioncontrol.dao;
import at.ac.tuwien.sepm.assignment.groupphase.exception.ElementNotFoundException;
import at.ac.tuwien.sepm.assignment.groupphase.exception.PersistenceException;
import at.ac.tuwien.sepm.assignment.groupphase.missioncontrol.dto.Employee;
import at.ac.tuwien.sepm.assignment.groupphase.missioncontrol.dto.Employee.EducationLevel;
import at.ac.tuwien.sepm.assignment.groupphase.missioncontrol.dto.Registration;
import at.ac.tuwien.sepm.assignment.groupphase.util.JDBCConnectionManager;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.time.Instant;
import java.time.LocalDate;
import java.time.OffsetDateTime;
import java.time.ZoneId;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
@Repository
public class RegistrationDatabaseDAO implements RegistrationDAO {
private JDBCConnectionManager jdbcConnectionManager;
private EmployeeDAO employeePersistence;
@Autowired
public RegistrationDatabaseDAO(
JDBCConnectionManager jdbcConnectionManager, EmployeeDAO employeePersistence) {
this.jdbcConnectionManager = jdbcConnectionManager;
this.employeePersistence = employeePersistence;
}
private long getVehicleVersionId(long vehicleId) throws PersistenceException {
String sqlGetVehicleVersionId = "SELECT * FROM vehicle WHERE id = ?";
try (PreparedStatement stmt =
jdbcConnectionManager.getConnection().prepareStatement(sqlGetVehicleVersionId)) {
stmt.setLong(1, vehicleId);
try (ResultSet rs = stmt.executeQuery()) {
if (rs.next()) {
return rs.getLong("version");
} else {
throw new PersistenceException("vehicle id not found");
}
}
} catch (SQLException e) {
throw new PersistenceException(e);
}
}
private long getEmployeeVersionId(long employeeId) throws PersistenceException {
String sqlGetEmployeeVersionId = "SELECT * FROM employee WHERE id = ?";
try (PreparedStatement stmt =
jdbcConnectionManager.getConnection().prepareStatement(sqlGetEmployeeVersionId)) {
stmt.setLong(1, employeeId);
try (ResultSet rs = stmt.executeQuery()) {
if (rs.next()) {
return rs.getLong("version");
} else {
throw new PersistenceException("employee id not found");
}
}
} catch (SQLException e) {
throw new PersistenceException(e);
}
}
@Override
public Set<Long> add(long vehicleId, Set<Registration> registrations)
throws PersistenceException {
String sql =
"INSERT INTO Registration (vehicleId, employeeId, start, end, active) VALUES (?,?,?,?,?)";
String sql2 = "UPDATE Vehicle SET status = 'FREI_WACHE' WHERE id = ?;";
Set<Long> vehicleIds = new HashSet<>();
try {
Connection con = jdbcConnectionManager.getConnection();
con.setAutoCommit(false);
try (PreparedStatement pstmt =
con.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)) {
// vehicleId is a Vehicle.id as it comes from GUI => fetch VehicleVersion.id
pstmt.setLong(1, getVehicleVersionId(vehicleId));
for (Registration r : registrations) {
pstmt.setLong(2, getEmployeeVersionId(r.employee().id()));
pstmt.setObject(3, OffsetDateTime.ofInstant(r.start(), ZoneId.systemDefault()));
pstmt.setObject(4, OffsetDateTime.ofInstant(r.end(), ZoneId.systemDefault()));
pstmt.setBoolean(5, true);
pstmt.addBatch();
}
pstmt.executeBatch();
try (ResultSet rs = pstmt.getGeneratedKeys()) {
while (rs.next()) vehicleIds.add(rs.getLong(1));
}
}
try (PreparedStatement pstmt = con.prepareStatement(sql2)) {
pstmt.setLong(1, vehicleId);
if (pstmt.executeUpdate() != 1) {
con.rollback();
throw new PersistenceException("Failed to persist registration");
}
}
con.commit();
return vehicleIds;
} catch (SQLException e) {
jdbcConnectionManager.rollbackConnection();
throw new PersistenceException(e);
}
}
@Override
public void remove(long id) throws ElementNotFoundException, PersistenceException {
String sql = "UPDATE Registration SET active = 0, end = ? WHERE id = ?";
try {
Connection con = jdbcConnectionManager.getConnection();
try (PreparedStatement pstmt = con.prepareStatement(sql)) {
pstmt.setObject(1, OffsetDateTime.ofInstant(Instant.now(), ZoneId.systemDefault()));
pstmt.setLong(2, id);
if (pstmt.executeUpdate() != 1)
throw new ElementNotFoundException("No such registrationId exists");
}
} catch (SQLException e) {
throw new PersistenceException(e);
}
}
protected List<Registration> list(long vehicleId) throws PersistenceException {
String sql =
"SELECT * FROM Registration r "
+ "JOIN EmployeeVersion ev ON ev.id = r.employeeId "
+ "JOIN VehicleVersion vv ON vv.id = r.vehicleId "
+ "WHERE r.vehicleId = ?";
try (PreparedStatement stmt = jdbcConnectionManager.getConnection().prepareStatement(sql)) {
List<Registration> registrationList = new ArrayList<>();
stmt.setLong(1, vehicleId); // is vehicle version id!
ResultSet rs = stmt.executeQuery();
while (rs.next()) {
Employee employee =
Employee.builder()
.id(rs.getLong("EmployeeVersion.id"))
.name(rs.getString("EmployeeVersion.name"))
.birthday(rs.getObject("EmployeeVersion.birthday", LocalDate.class))
.educationLevel(
EducationLevel.valueOf(
rs.getString("EmployeeVersion.educationLevel")))
.isDriver(rs.getBoolean("EmployeeVersion.isDriver"))
.isPilot(rs.getBoolean("EmployeeVersion.isPilot"))
.build();
Registration registration =
Registration.builder()
.id(rs.getLong("Registration.id"))
.start(
(rs.getObject("Registration.start", OffsetDateTime.class))
.toInstant())
.end(
(rs.getObject("Registration.end", OffsetDateTime.class))
.toInstant())
.employee(employee)
.build();
registrationList.add(registration);
}
return registrationList;
} catch (SQLException e) {
throw new PersistenceException(e);
}
}
}
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