'use strict'

const { execute, queryOne, query } = require('../database/postgres')

class Notification {
  static async create({ user_cpf, title, message, type }) {
    return execute(
      `INSERT INTO notifications (user_cpf, title, message, type)
       VALUES ($1, $2, $3, $4) RETURNING id`,
      [user_cpf, title, message, type || 'info']
    )
  }

  static async getUserNotifications(user_cpf) {
    return query(
      `SELECT * FROM notifications 
       WHERE user_cpf = $1 
       ORDER BY created_at DESC LIMIT 50`,
      [user_cpf]
    )
  }

  static async getUnreadCount(user_cpf) {
    const row = await queryOne(
      `SELECT COUNT(*) as total FROM notifications 
       WHERE user_cpf = $1 AND read_at IS NULL`,
      [user_cpf]
    )
    return row ? parseInt(row.total) : 0
  }

  static async markAsRead(id, user_cpf) {
    return execute(
      `UPDATE notifications SET read_at = NOW() 
       WHERE id = $1 AND user_cpf = $2 AND read_at IS NULL`,
      [id, user_cpf]
    )
  }
}

module.exports = Notification