const NotificationModel = require('../models/NotificationModel')
const UserModel = require('../models/UserModel')

const createTagNotifications = async ({ taggerId, taggedUserIds, postId }) => {
  try {
    if (!taggerId || !postId || !taggedUserIds?.length) return

    const uniqueIds = [...new Set(taggedUserIds.map(String))].filter(
      (id) => id !== String(taggerId)
    )
    if (!uniqueIds.length) return

    const tagger = await UserModel.findById(taggerId).select('user_name')
    const taggerUsername = tagger?.user_name || 'کاربر'
    const message = `${taggerUsername} شما را در پستی نشانه‌گذاری کرد.`

    await Promise.all(
      uniqueIds.map((userId) =>
        NotificationModel.create({
          user_id: userId,
          project_post_id: postId,
          actor_id: taggerId,
          type: 'post_tag',
          title: message,
          description: message
        })
      )
    )
  } catch (error) {
    console.error('Error creating tag notifications:', error)
  }
}

module.exports = {
  createTagNotifications
}