package models

import (
    "database/sql"
    "time"
)

type Notification struct {
    ID        int
    UserID    int
    Type      string
    RelatedID int
    CreatedAt time.Time
    Read      bool
}

func GetNotificationsByUserID(db *sql.DB, userID int) ([]Notification, error) {
    query := "SELECT id, user_id, type, related_id, read, created_at FROM notifications WHERE user_id = ? ORDER BY created_at DESC"
    rows, err := db.Query(query, userID)
    if err != nil {
        return nil, err
    }
    defer rows.Close()

    var notifications []Notification
    for rows.Next() {
        notification := Notification{}
        err := rows.Scan(&notification.ID, &notification.UserID, &notification.Type, &notification.RelatedID, &notification.Read, &notification.CreatedAt)
        if err != nil {
            return nil, err
        }
        notifications = append(notifications, notification)
    }
    return notifications, nil
}

// Stubbed for future implementation
func CreateNotification(db *sql.DB, notification Notification) error {
    query := "INSERT INTO notifications (user_id, type, related_id, read, created_at) VALUES (?, ?, ?, ?, NOW())"
    _, err := db.Exec(query, notification.UserID, notification.Type, notification.RelatedID, notification.Read)
    return err
}

// Stubbed for future implementation
func MarkNotificationAsRead(db *sql.DB, id int) error {
    query := "UPDATE notifications SET read = true WHERE id = ?"
    _, err := db.Exec(query, id)
    return err
}