module.exports = (sequelize, DataTypes) => sequelize.define("NotificationDelivery", {
  id: { type: DataTypes.STRING, primaryKey: true },
  notificationId: { type: DataTypes.STRING, allowNull: true },
  userId: { type: DataTypes.STRING, allowNull: true },
  channel: { type: DataTypes.ENUM("EMAIL", "PUSH"), allowNull: false },
  recipient: { type: DataTypes.STRING, allowNull: false },
  templateKey: { type: DataTypes.STRING, allowNull: false },
  status: { type: DataTypes.ENUM("QUEUED", "PROCESSING", "SENT", "FAILED"), allowNull: false, defaultValue: "QUEUED" },
  attemptCount: { type: DataTypes.INTEGER, allowNull: false, defaultValue: 0 },
  lastAttemptAt: DataTypes.DATE, sentAt: DataTypes.DATE, failedAt: DataTypes.DATE, failureCode: DataTypes.STRING,
}, { tableName: "notification_deliveries", timestamps: true });