// /components/notifications/notificationModel.js

const mongoose = require('mongoose');

const notificationSchema = new mongoose.Schema({
  user: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'User',
    index: true
  },
  channel: {
    type: String,
    enum: ['email', 'sms', 'baleBot'],
    required: true
  },
  subject: {
    type: String,
    trim: true
  },
  body: {
    type: String,
    required: true,
    trim: true
  },
  status: {
    type: String,
    enum: ['pending', 'sent', 'delivered', 'failed', 'retrying'],
    default: 'pending',
    index: true
  },
  retryCount: {
    type: Number,
    default: 0
  },
  maxRetries: {
    type: Number,
    default: 3
  },
  lastError: {
    type: String,
    trim: true
  },
  sentAt: {
    type: Date
  },
  deliveredAt: {
    type: Date
  },
  relatedEvent: {
    type: String,
    trim: true
  }
}, {
  timestamps: true
});

module.exports = mongoose.model('Notification', notificationSchema);