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path: root/database/sessions.go
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package database

import (
	"database/sql"
	"time"

	_ "github.com/mattn/go-sqlite3"
)

type Session struct {
	ID       string
	UserID   string
	ExpireAt time.Time
}

func CreateSession(db *sql.DB, id, userID string, ttl time.Duration) (*Session, error) {
	now := time.Now()
	expire := now.Add(ttl)
	_, err := db.Exec(
		"INSERT INTO sessions (id, user_id, created_at, expire_at) VALUES (?, ?, ?, ?)",
		id, userID, now, expire,
	)
	if err != nil {
		return nil, err
	}
	return &Session{ID: id, UserID: userID, ExpireAt: expire}, nil
}

func GetSessionUser(db *sql.DB, id string) (*User, error) {
	return scanUser(db.QueryRow(
		"SELECT u.id, u.username, u.created_at, u.last_seen FROM users u JOIN sessions s ON s.user_id = u.id WHERE s.id = ? AND s.expire_at > ?",
		id, time.Now(),
	))
}

func DeleteExpiredSessions(db *sql.DB) error {
	_, err := db.Exec("DELETE FROM sessions WHERE expire_at < ?", time.Now())
	return err
}

func DeleteSession(db *sql.DB, id string) error {
	_, err := db.Exec("DELETE FROM sessions WHERE id = ?", id)
	return err
}