const { DataTypes } = require('sequelize');
const { sequelize } = require('../config/database');

const NotificationLog = sequelize.define('notification_logs', {
  id: { type: DataTypes.UUID, defaultValue: DataTypes.UUIDV4, primaryKey: true },
  notification_id: { type: DataTypes.UUID, allowNull: false },
  user_id: { type: DataTypes.UUID, allowNull: false },
  sent_at: { type: DataTypes.DATE },
  read_at: { type: DataTypes.DATE },
  delivery_status: {
    type: DataTypes.ENUM('pending', 'sent', 'delivered', 'failed', 'read'),
    defaultValue: 'pending'
  },
  delivery_channel: {
    type: DataTypes.ENUM('in_app', 'email', 'sms', 'push'),
    defaultValue: 'in_app'
  },
  error_message: { type: DataTypes.TEXT },
  created_at: { type: DataTypes.DATE, allowNull: false, defaultValue: DataTypes.NOW },
  updated_at: { type: DataTypes.DATE, allowNull: false, defaultValue: DataTypes.NOW },
}, {
  tableName: 'notification_logs',
  timestamps: true,
  underscored: true,
  indexes: [
    { fields: ['notification_id'] },
    { fields: ['user_id'] },
    { fields: ['delivery_status'] },
    { fields: ['read_at'] },
  ],
});

module.exports = NotificationLog;