77 lines
2.0 KiB
Go
77 lines
2.0 KiB
Go
package adlin
|
|
|
|
import (
|
|
"crypto/rand"
|
|
"time"
|
|
)
|
|
|
|
type Session struct {
|
|
Id []byte `json:"id"`
|
|
IdStudent *int64 `json:"login"`
|
|
Time time.Time `json:"time"`
|
|
}
|
|
|
|
func GetSession(id []byte) (s *Session, err error) {
|
|
s = new(Session)
|
|
err = DBQueryRow("SELECT id_session, id_student, time FROM student_sessions WHERE id_session=?", id).Scan(&s.Id, &s.IdStudent, &s.Time)
|
|
return
|
|
}
|
|
|
|
func NewSession() (*Session, error) {
|
|
session_id := make([]byte, 255)
|
|
if _, err := rand.Read(session_id); err != nil {
|
|
return nil, err
|
|
} else if _, err := DBExec("INSERT INTO student_sessions (id_session, time) VALUES (?, ?)", session_id, time.Now()); err != nil {
|
|
return nil, err
|
|
} else {
|
|
return &Session{session_id, nil, time.Now()}, nil
|
|
}
|
|
}
|
|
|
|
func (student *Student) NewSession() (*Session, error) {
|
|
session_id := make([]byte, 255)
|
|
if _, err := rand.Read(session_id); err != nil {
|
|
return nil, err
|
|
} else if _, err := DBExec("INSERT INTO student_sessions (id_session, id_student, time) VALUES (?, ?, ?)", session_id, student.Id, time.Now()); err != nil {
|
|
return nil, err
|
|
} else {
|
|
return &Session{session_id, &student.Id, time.Now()}, nil
|
|
}
|
|
}
|
|
|
|
func (s *Session) SetStudent(student *Student) (*Session, error) {
|
|
s.IdStudent = &student.Id
|
|
_, err := s.Update()
|
|
return s, err
|
|
}
|
|
|
|
func (s *Session) Update() (int64, error) {
|
|
if res, err := DBExec("UPDATE student_sessions SET id_student = ?, time = ? WHERE id_session = ?", s.IdStudent, s.Time, s.Id); err != nil {
|
|
return 0, err
|
|
} else if nb, err := res.RowsAffected(); err != nil {
|
|
return 0, err
|
|
} else {
|
|
return nb, err
|
|
}
|
|
}
|
|
|
|
func (s *Session) Delete() (int64, error) {
|
|
if res, err := DBExec("DELETE FROM student_sessions WHERE id_session = ?", s.Id); err != nil {
|
|
return 0, err
|
|
} else if nb, err := res.RowsAffected(); err != nil {
|
|
return 0, err
|
|
} else {
|
|
return nb, err
|
|
}
|
|
}
|
|
|
|
func ClearSession() (int64, error) {
|
|
if res, err := DBExec("DELETE FROM student_sessions"); err != nil {
|
|
return 0, err
|
|
} else if nb, err := res.RowsAffected(); err != nil {
|
|
return 0, err
|
|
} else {
|
|
return nb, err
|
|
}
|
|
}
|